JP2001320246A - Distortion compensation amplifier - Google Patents
Distortion compensation amplifierInfo
- Publication number
- JP2001320246A JP2001320246A JP2000136289A JP2000136289A JP2001320246A JP 2001320246 A JP2001320246 A JP 2001320246A JP 2000136289 A JP2000136289 A JP 2000136289A JP 2000136289 A JP2000136289 A JP 2000136289A JP 2001320246 A JP2001320246 A JP 2001320246A
- Authority
- JP
- Japan
- Prior art keywords
- unit
- temperature
- signal
- compensation value
- compensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003321 amplification Effects 0.000 claims abstract description 25
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 25
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 description 28
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Landscapes
- Amplifiers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
(57)【要約】
【課題】 信号の波形歪を補償する装置を小型化するこ
とができる歪補償増幅器を提供する。
【解決手段】 信号を増幅する増幅部１４６と、増幅部
１４６の温度を測定する温度測定部２００と、増幅部１
４６の測定温度に基づいて、信号の波形歪を補償するた
めの補償値を格納した補償値テーブルを有する補償値テ
ーブル部１３２と、測定温度に基づいて、補償値テーブ
ル部１３２に含まれる補償値テーブルを選択するセレク
タ１３８と、補償値を用いて信号の波形歪を補償する信
号調整部１３６と、増幅部１４６の温度を調整する温度
調整部２００とを備えた歪補償増幅器。
(57) [Problem] To provide a distortion compensation amplifier capable of reducing the size of a device for compensating signal waveform distortion. SOLUTION: An amplification unit 146 for amplifying a signal, a temperature measurement unit 200 for measuring a temperature of the amplification unit 146, and an amplification unit 1
A compensation value table unit 132 having a compensation value table storing compensation values for compensating for waveform distortion of a signal based on the measured temperature, and a compensation value included in the compensation value table unit 132 based on the measured temperature. A distortion compensation amplifier comprising: a selector 138 that selects a table; a signal adjustment unit 136 that compensates for waveform distortion of a signal using a compensation value; and a temperature adjustment unit 200 that adjusts the temperature of the amplification unit 146.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、歪補償増幅器に関
する。特に本発明は、温度調整装置を備えた歪補償増幅
器に関する。[0001] The present invention relates to a distortion compensation amplifier. In particular, the present invention relates to a distortion compensation amplifier having a temperature adjusting device.
【０００２】[0002]
【従来の技術】図１は、従来の歪補償増幅器１０を示
す。従来の歪補償増幅器１０は、帰還処理部２０と、歪
補償部３０と、送信部４０とを備える。帰還処理部２０
は、周波数変換部１４と、直交検波部１６と、補償値更
新部１８とを有する。歪補償部３０は、補償値テーブル
３２と、電力計算部３４と、信号調整部３６とを有す
る。送信部４０は、直交変調部４２と、周波数変換部４
４と、増幅部４６とを有する。2. Description of the Related Art FIG. 1 shows a conventional distortion compensation amplifier 10. The conventional distortion compensating amplifier 10 includes a feedback processing unit 20, a distortion compensating unit 30, and a transmitting unit 40. Feedback processing unit 20
Has a frequency conversion unit 14, a quadrature detection unit 16, and a compensation value update unit 18. The distortion compensator 30 includes a compensation value table 32, a power calculator 34, and a signal adjuster 36. The transmission unit 40 includes a quadrature modulation unit 42 and a frequency conversion unit 4
4 and an amplifying unit 46.
【０００３】従来の歪補償増幅器１０の動作について説
明する。送信部４０より出力された送信信号は分波し、
その一部が帰還信号として帰還処理部２０に入力され
る。帰還処理部２０において、周波数変換部２２は、帰
還信号の周波数を変換し、直交検波部２４は、帰還信号
の直交検波処理を行い、補償値更新部２６は、帰還信号
に基づいて、アルゴリズム処理を行い、補償値を最適化
し、補償値テーブル３２に出力する。[0003] The operation of the conventional distortion compensation amplifier 10 will be described. The transmission signal output from the transmission unit 40 is demultiplexed,
A part thereof is input to the feedback processing unit 20 as a feedback signal. In the feedback processing unit 20, the frequency conversion unit 22 converts the frequency of the feedback signal, the quadrature detection unit 24 performs quadrature detection processing of the feedback signal, and the compensation value update unit 26 performs algorithm processing based on the feedback signal. Is performed to optimize the compensation value and output to the compensation value table 32.
【０００４】また、歪補償部３０に入力された変調信号
は、信号調整部３６および電力計算部３４に入力され
る。電力計算部６４は、変調信号に基づく信号電力を計
算し、補償値テーブル３２に出力する。補償値テーブル
３２は、信号電力に対応する波形歪を補償するための補
償値を、信号調整部３６に出力する。The modulated signal input to the distortion compensator 30 is input to a signal adjuster 36 and a power calculator 34. The power calculator 64 calculates signal power based on the modulated signal and outputs the calculated signal power to the compensation value table 32. The compensation value table 32 outputs a compensation value for compensating waveform distortion corresponding to signal power to the signal adjustment unit 36.
【０００５】動作中に、送信信号が増幅部４６におい
て、増幅処理されるときに送信信号に波形歪が生じる。
そのため、補償値更新部２６において、波形歪を補償す
るための補償値を更新する必要がある。補償値更新部２
６は、歪補償部３０に入力される変調信号と、帰還信号
に基づいて、アルゴリズム処理を行い、補償値を算出
し、補償値テーブルに出力することにより、補償値を更
新する。During operation, when the transmission signal is amplified in the amplifying section 46, waveform distortion occurs in the transmission signal.
Therefore, the compensation value updating unit 26 needs to update the compensation value for compensating for the waveform distortion. Compensation value update unit 2
Reference numeral 6 updates the compensation value by performing algorithm processing based on the modulated signal input to the distortion compensating unit 30 and the feedback signal, calculating a compensation value, and outputting the compensation value to a compensation value table.
【０００６】補償値テーブル３２は、信号電力に対応す
る波形歪を補償するための補償値を、信号調整部３６へ
出力する。信号調整部３６は、波形歪を補償するための
補償値に基づいて、変調信号を調整する。信号調整部３
６は、補償された変調信号である補償信号を送信部４０
へ出力する。[0006] The compensation value table 32 outputs a compensation value for compensating waveform distortion corresponding to signal power to the signal adjustment unit 36. The signal adjustment unit 36 adjusts the modulated signal based on a compensation value for compensating for waveform distortion. Signal conditioner 3
6 transmits a compensation signal, which is a compensated modulated signal, to the transmission unit 40
Output to
【０００７】送信部４０において、直交変調部４２は、
補償信号の直交変調処理を行い、周波数変換部４４は、
補償信号の周波数変換処理を行い、増幅部４６は、補償
信号の増幅処理を行うことにより調整し、調整された補
償信号である送信信号を出力する。In the transmitting section 40, the quadrature modulating section 42
The quadrature modulation process of the compensation signal is performed, and the frequency conversion unit 44
The frequency conversion processing of the compensation signal is performed, and the amplification unit 46 performs adjustment by performing the amplification processing of the compensation signal, and outputs a transmission signal that is the adjusted compensation signal.
【０００８】[0008]
【発明が解決しようとする課題】図１に示される従来の
歪補償増幅器１０においては、送信信号の波形歪を補償
するために、帰還部２０を設けて、閉回路が構成されて
いる。従来の歪補償増幅器１０は、送信信号の波形歪を
補償するための帰還部２０を有しているので、歪補償増
幅器１０の回路が非常に複雑なものとなり、また、回路
規模を小型化することが困難であるという問題を有して
いる。In the conventional distortion compensation amplifier 10 shown in FIG. 1, a feedback circuit 20 is provided to compensate for waveform distortion of a transmission signal, and a closed circuit is formed. Since the conventional distortion compensating amplifier 10 has the feedback section 20 for compensating the waveform distortion of the transmission signal, the circuit of the distortion compensating amplifier 10 becomes very complicated and the circuit scale is reduced. It is difficult to do this.
【０００９】そこで本発明は、上記の課題を解決するこ
とのできる歪補償増幅器を提供することを目的とする。
この目的は特許請求の範囲における独立項に記載の特徴
の組み合わせにより達成される。また従属項は本発明の
更なる有利な具体例を規定する。Accordingly, an object of the present invention is to provide a distortion compensation amplifier which can solve the above-mentioned problems.
This object is achieved by a combination of features described in the independent claims. The dependent claims define further advantageous embodiments of the present invention.
【００１０】[0010]
【課題を解決するための手段】即ち、本発明の一形態に
よると、データ内容を示す信号を増幅する増幅部と、増
幅部の温度状態に対応し、増幅部で増幅される信号の波
形歪を補償するための複数の補償値を予め格納した補償
値テーブルを有する補償値テーブル部と、増幅部の温度
を測定する温度測定部と、増幅部の測定温度に基づい
て、増幅部の温度を、補償値テーブルに対応する温度に
調整する温度調整部と、測定温度に基づいて、補償値テ
ーブル部から、測定温度に対応する補償値テーブルを選
択するセレクタと、選択された補償値テーブルに含まれ
る補償値を用いて、信号の波形歪を補償する信号調整部
とを備えることを特徴とする歪補償増幅器を提供する。According to one aspect of the present invention, an amplifying section for amplifying a signal indicating data content, and a waveform distortion of a signal amplified by the amplifying section corresponding to a temperature state of the amplifying section. A compensation value table section having a compensation value table in which a plurality of compensation values for compensating in advance are stored; a temperature measurement section for measuring the temperature of the amplification section; and a temperature of the amplification section based on the measured temperature of the amplification section. A temperature adjustment unit for adjusting to a temperature corresponding to the compensation value table, a selector for selecting a compensation value table corresponding to the measured temperature from the compensation value table unit based on the measured temperature, and a selector included in the selected compensation value table. And a signal adjuster that compensates for waveform distortion of the signal using the compensation value.
【００１１】なお上記の発明の概要は、本発明の必要な
特徴の全てを列挙したものではなく、これらの特徴群の
サブコンビネーションも又発明となりうる。The above summary of the invention does not enumerate all of the necessary features of the present invention, and a sub-combination of these features can also be an invention.
【００１２】[0012]
【発明の実施の形態】以下、発明の実施の形態を通じて
本発明を説明するが、以下の実施形態はクレームにかか
る発明を限定するものではなく、又実施形態の中で説明
されている特徴の組み合わせの全てが発明の解決手段に
必須であるとは限らない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described through embodiments of the present invention. However, the following embodiments do not limit the claimed invention and have the features described in the embodiments. Not all combinations are essential to the solution of the invention.
【００１３】図２は、本発明の一実施形態である、図３
において後述する歪補償増幅器を備える基地局３３０の
構成を示す。基地局３３０は、空中線３３２、送信部で
ある歪補償増幅器１００、受信部３３４、処理部３３
６、基地局制御部３３８、および伝送部３４０を備え
る。空中線３３２はアンテナであって、歪補償増幅器１
００で形成された信号を送信し、また、移動局（図示せ
ず）より送信された信号を受信する。受信部３３４は、
受信信号の増幅処理、変調処理などの処理を行う。歪補
償増幅器１００は、送信信号の増幅処理、歪補償増幅器
１００の温度に基づく送信信号の波形歪の補償処理、歪
補償増幅器１００の温度調整、変調処理などの処理を行
う。処理部３３６は、送信信号および受信信号のベース
バンド処理などを行う。基地局制御部３３８は、基地局
３３０に含まれる処理部３３６などの構成の制御を行
う。伝送部３４０は、制御局（図示せず）との信号の伝
送処理を行う。FIG. 2 shows an embodiment of the present invention.
2 shows a configuration of a base station 330 including a distortion compensation amplifier described later. The base station 330 includes an antenna 332, a distortion compensating amplifier 100 as a transmitting unit, a receiving unit 334, and a processing unit 33.
6, a base station control unit 338, and a transmission unit 340. The antenna 332 is an antenna, and the distortion compensating amplifier 1
It transmits the signal formed at 00 and receives a signal transmitted from a mobile station (not shown). The receiving unit 334
Processing such as amplification processing and modulation processing of the received signal is performed. The distortion compensation amplifier 100 performs processing such as amplification processing of the transmission signal, compensation processing of the waveform distortion of the transmission signal based on the temperature of the distortion compensation amplifier 100, temperature adjustment of the distortion compensation amplifier 100, and modulation processing. The processing unit 336 performs baseband processing on the transmission signal and the reception signal. The base station control unit 338 controls the configuration of the processing unit 336 and the like included in the base station 330. The transmission unit 340 performs a signal transmission process with a control station (not shown).
【００１４】図３は、本発明の一実施形態である歪補償
増幅器１００を示す。歪補償増幅器１００は、信号を送
信処理する送信部１４０と、送信部１４０の温度を測定
する温度測定部１２０と、信号の波形歪を補償する歪補
償部１３０と、送信部１４０の温度を調整する温度調整
部２００とを備える。FIG. 3 shows a distortion compensation amplifier 100 according to an embodiment of the present invention. The distortion compensating amplifier 100 includes a transmitting unit 140 that performs signal transmission processing, a temperature measuring unit 120 that measures the temperature of the transmitting unit 140, a distortion compensating unit 130 that compensates for signal waveform distortion, and adjusts the temperature of the transmitting unit 140. And a temperature adjustment unit 200 that performs the operation.
【００１５】送信部１４０は、信号の直交変調処理を行
う直交変調部１４２と、信号の周波数を変換処理する周
波数変換部１４４と、データ内容を示す信号を増幅する
増幅部１４６とを有する。歪補償部１３０は、信号の電
力を計算する電力計算部１３４と、信号の波形歪を補償
するための複数の補償値を予め格納した複数の補償値テ
ーブルを有する補償値テーブル部１３２と、補償値を用
いて信号の波形歪を補償する信号調整部１３６と、温度
測定部１２０で測定された温度に基づき、補償値テーブ
ル部１３２から測定温度に対応する補償値テーブルを選
択するセレクタ１３８とを有する。The transmission section 140 includes an orthogonal modulation section 142 for performing orthogonal modulation processing of a signal, a frequency conversion section 144 for performing conversion processing of a signal frequency, and an amplification section 146 for amplifying a signal indicating data content. The distortion compensating unit 130 includes a power calculating unit 134 that calculates the power of the signal, a compensation value table unit 132 having a plurality of compensation value tables in which a plurality of compensation values for compensating for waveform distortion of the signal are stored in advance, A signal adjustment unit 136 for compensating waveform distortion of the signal using the value, and a selector 138 for selecting a compensation value table corresponding to the measured temperature from the compensation value table unit 132 based on the temperature measured by the temperature measurement unit 120. Have.
【００１６】温度調整部２００は、送信部１４０の温度
を調整する温度調整装置２０４と、温度調整装置２０４
を制御する温度調整装置制御部２０２とを有する。温度
調整装置２０４は、例えばペルチエ素子などの、電力を
用いて加熱および冷却することにより温度調整が可能な
素子や装置であってもよく、また、温度調整装置２０４
は、冷却または加熱だけの機能を有してもよい。温度調
整装置２０４が、冷却または加熱だけの機能を有する場
合には、温度調整装置２０４は、冷却ファンやヒーター
などの装置であることが好ましい。本実施例において、
温度調整装置２０４は、冷却ファンを有し、温度調整装
置制御部２０２は、当該冷却ファンの回転数を制御する
ことにより、増幅部１４６の温度を調整する。The temperature adjustment unit 200 includes a temperature adjustment device 204 for adjusting the temperature of the transmission unit 140 and a temperature adjustment device 204.
And a temperature control device control unit 202 for controlling the temperature control. The temperature adjustment device 204 may be an element or device capable of adjusting the temperature by heating and cooling using electric power, such as a Peltier element, for example.
May have a function of only cooling or heating. When the temperature adjustment device 204 has only a function of cooling or heating, it is preferable that the temperature adjustment device 204 is a device such as a cooling fan or a heater. In this embodiment,
The temperature adjustment device 204 has a cooling fan, and the temperature adjustment device control unit 202 adjusts the temperature of the amplification unit 146 by controlling the rotation speed of the cooling fan.
【００１７】次に、歪補償増幅器１００の動作について
説明する。歪補償部１３０に入力された変調信号は、変
調信号の電力および温度測定部１４０より入力された温
度信号に基づいて、変調信号を補償する。さらに、歪補
償部１３０は、補償された変調信号である補償信号を、
送信部１４０に出力する。送信部１４０において、直交
変調部１４２、周波数変換部１４４、および増幅部１４
６は、通過する補償信号を処理し、出力する。Next, the operation of the distortion compensation amplifier 100 will be described. The modulated signal input to distortion compensation section 130 compensates the modulated signal based on the power of the modulated signal and the temperature signal input from temperature measuring section 140. Further, the distortion compensating unit 130 outputs a compensation signal that is a compensated modulation signal,
Output to transmitting section 140. In transmitting section 140, quadrature modulating section 142, frequency converting section 144, and amplifying section 14
6 processes and outputs the passing compensation signal.
【００１８】送信部１４０により生じる信号の波形歪
は、主として送信部１４０の温度変化により、出力特性
が変化することに起因する。特に信号の波形歪は、送信
部１４０に含まれる増幅部１４６の温度変化による出力
変化に大きく影響する。本発明において、歪補償増幅器
１００は、増幅部１４６の温度に対応する補償値テーブ
ル部１３２に含まれる補償値テーブルに格納された補償
値を用いて、波形歪を補償する。そして、歪補償増幅器
１００は、温度調整部２００により、増幅部１４６の温
度を、補償値テーブル部１３２に含まれる補償値テーブ
ルに対応する温度に調整するように増幅部１４６の温度
を調整する。以下に、本発明の一実施形態である、プリ
ディストーション方式による歪補償増幅器１００の動作
について説明する。The waveform distortion of the signal generated by transmitting section 140 is mainly caused by a change in output characteristics due to a change in temperature of transmitting section 140. In particular, the waveform distortion of the signal greatly affects an output change due to a temperature change of the amplification unit 146 included in the transmission unit 140. In the present invention, the distortion compensation amplifier 100 compensates for waveform distortion using a compensation value stored in a compensation value table included in the compensation value table 132 corresponding to the temperature of the amplifier 146. Then, the distortion compensation amplifier 100 adjusts the temperature of the amplification unit 146 by the temperature adjustment unit 200 such that the temperature of the amplification unit 146 is adjusted to the temperature corresponding to the compensation value table included in the compensation value table unit 132. Hereinafter, the operation of the distortion compensation amplifier 100 based on the pre-distortion method, which is one embodiment of the present invention, will be described.
【００１９】歪補償部１３０に入力される、π／４シフ
ト４位相偏移変調方式により形成された変調信号Ｚは、
変調信号を複素数ｊを用いて複素数表示したときに、次
式で示す実数部分を示すI成分および虚数部分を示すＱ
成分を有する。 Ｚ＝Ｉ＋ｊＱ さらに変調信号Ｚは、次式で示される振幅Ａおよび位相
Ｔを有する。 Ａ＝√（Ｉ２＋Ｑ２） Ｔ＝ａｒｃｔａｎ（Ｑ／Ｉ） そして、変調信号は、歪補償部１３０に含まれる信号調
整部３６および電力計算部１３４に入力される。The modulation signal Z, which is input to the distortion compensator 130 and formed by the π / 4 shift 4 phase shift keying system, is
When a modulated signal is represented by a complex number using a complex number j, an I component representing a real part and a Q representing an imaginary part are represented by the following equations.
With components. Z = I + jQ Further, the modulation signal Z has an amplitude A and a phase T represented by the following equation. A = √ (I 2 + Q 2 ) T = arctan (Q / I) Then, the modulation signal is input to the signal adjustment unit 36 and the power calculation unit 134 included in the distortion compensation unit 130.
【００２０】電力計算部１３４は、入力された変調信号
に基づいて信号電力αを、次式により計算する。 α＝Ｉ２＋Ｑ２ そして電力計算部１３４は、当該信号電力をセレクタ１
３８に出力する。The power calculator 134 calculates the signal power α based on the input modulated signal by the following equation. α = I 2 + Q 2 and the power calculation unit 134 calculates the signal power
38.
【００２１】また、温度測定部１２０が送信部１４０の
温度を測定する。温度測定部１２０は、送信部１４０全
体の温度を測定してもよいが、アナログ送信信号に波形
歪を生じさせる主たる要因となる部位を測定してもよ
い。本実施例においては、温度測定部１２０が、波形歪
を生じさせる部位として増幅部１４６の温度を測定す
る。温度測定部１２０は、送信部１４０の測定温度を、
測定温度を示す温度信号としてセレクタ１３８へ出力す
る。Further, temperature measuring section 120 measures the temperature of transmitting section 140. The temperature measurement unit 120 may measure the temperature of the entire transmission unit 140, or may measure a part that is a main factor causing waveform distortion in the analog transmission signal. In the present embodiment, the temperature measuring unit 120 measures the temperature of the amplifying unit 146 as a part that causes waveform distortion. The temperature measuring unit 120 measures the temperature measured by the transmitting unit 140,
The signal is output to the selector 138 as a temperature signal indicating the measured temperature.
【００２２】歪補償部１３０は、増幅部１４６の温度状
態に対応する補償値テーブル含む補償値テーブル部１３
２を有する。補償値テーブルは、増幅部１４６で増幅さ
れる信号の波形歪を補償するための複数の補償値を予め
格納する。また、別の実施例において、補償値テーブル
部１３２は、増幅部１４６の温度状態に対応する、複数
の補償値テーブルの対応関係をまとめた１つの補償値テ
ーブルを有してもよい。The distortion compensator 130 includes a compensation value table 13 including a compensation value table corresponding to the temperature state of the amplifier 146.
2 The compensation value table stores in advance a plurality of compensation values for compensating for waveform distortion of a signal amplified by the amplifier 146. In another embodiment, the compensation value table unit 132 may include one compensation value table that summarizes the correspondence between a plurality of compensation value tables corresponding to the temperature state of the amplification unit 146.
【００２３】本実施例において、温度調整部２００は、
増幅部１４６の温度を、温度測定部１２０から出力され
た増幅部１４６の測定温度に基づいて、補償値テーブル
部１３２に含まれる複数の補償値テーブルのうち、いず
れかに対応する温度である調整温度に調整する。好まし
くは、温度調整部２００は、増幅部１４６の温度を、温
度測定部１４０から出力された増幅部１４６の測定温度
に基づいて、補償値テーブル部１３２に含まれる複数の
補償値テーブルのうち、最も近い温度を有する補償値テ
ーブルの温度に調整する。In the present embodiment, the temperature adjustment unit 200
The temperature of the amplifier 146 is adjusted based on the measured temperature of the amplifier 146 output from the temperature measuring unit 120, the temperature corresponding to any one of the plurality of compensation value tables included in the compensation value table 132. Adjust to temperature. Preferably, the temperature adjustment unit 200 determines the temperature of the amplification unit 146 based on the measured temperature of the amplification unit 146 output from the temperature measurement unit 140, among a plurality of compensation value tables included in the compensation value table unit 132. The temperature is adjusted to the temperature in the compensation value table having the closest temperature.
【００２４】温度調整装置２０４は、冷却だけの機能を
有する冷却装置である冷却ファンや、加熱だけの機能を
有する加熱装置であるヒータであってもよい。温度調整
装置２０４が、例えば冷却ファンである場合に、温度調
整部２００は、増幅部１４６の温度を、温度測定部１４
０から出力された増幅部１４６の測定温度に基づいて、
補償値テーブル部１３２に含まれる複数の補償値テーブ
ルのうち、増幅部１４６の測定温度に最も近く、且つ増
幅部１４６の測定温度より低い温度を有する補償値テー
ブルに対応する温度に調整してもよい。The temperature adjusting device 204 may be a cooling fan which is a cooling device having only a cooling function, or a heater which is a heating device having only a heating function. When the temperature adjustment device 204 is, for example, a cooling fan, the temperature adjustment unit 200 determines the temperature of the amplification unit 146 by using the temperature measurement unit 14.
Based on the measured temperature of the amplifier 146 output from 0,
Of the plurality of compensation value tables included in the compensation value table unit 132, the temperature may be adjusted to a temperature corresponding to the compensation value table closest to the measured temperature of the amplifier unit 146 and lower than the measured temperature of the amplifier unit 146. Good.
【００２５】温度調整部２００を有さない歪補償増幅器
は、増幅部１４６の温度に対応できるように、多くの温
度状態に対応する補償値テーブルを有する必要がある。
特に、増幅部１４６の温度変化が急峻な場合には、各補
償値テーブルが対応する温度域を、非常に狭くする必要
があるため、その結果、補償値テーブル部１３２は、非
常に多くの補償値テーブルを有さなくてはならない。そ
こで、本発明による歪補償増幅器１００は、温度調整部
２００を有することにより、増幅部１４６の温度を、補
償値テーブル部１３２に含まれる複数の補償値テーブル
に対応する温度に調整する。そして、補償値テーブル部
１３２に含まれる補償値テーブルの数を大幅に減らすこ
とができ、その結果、歪補償増幅器１００の小型化が可
能となる。The distortion compensating amplifier without the temperature adjusting section 200 needs to have a compensation value table corresponding to many temperature states so as to correspond to the temperature of the amplifying section 146.
In particular, when the temperature change of the amplifying unit 146 is steep, the temperature range corresponding to each compensation value table needs to be very narrow, and as a result, the compensation value table unit 132 has a very large number of compensations. Must have a value table. Therefore, the distortion compensation amplifier 100 according to the present invention includes the temperature adjustment unit 200 to adjust the temperature of the amplification unit 146 to a temperature corresponding to a plurality of compensation value tables included in the compensation value table unit 132. Then, the number of compensation value tables included in the compensation value table unit 132 can be significantly reduced, and as a result, the size of the distortion compensation amplifier 100 can be reduced.
【００２６】セレクタ１３８は、補償値テーブル部１３
２に含まれる複数の補償値テーブルから、温度測定部１
２０で測定された、増幅部１４６の測定温度に対応する
補償値テーブルを選択する。そして、セレクタ１３８
は、電力計算部１３４から入力された信号電力αに基づ
いて、選択された補償値テーブルに含まれる補償値ｈｐ
を選択し、信号調整部１３６に出力する。補償値ｈｐ
は、増幅部１４６の非線形歪特性の逆特性を有する。The selector 138 is provided in the compensation value table 13
From a plurality of compensation value tables included in
A compensation value table corresponding to the measured temperature of the amplifier 146 measured at 20 is selected. Then, the selector 138
Is the compensation value hp included in the selected compensation value table based on the signal power α input from the power calculator 134.
Is selected and output to the signal adjustment unit 136. Compensation value hp
Has the inverse characteristic of the nonlinear distortion characteristic of the amplifier 146.
【００２７】信号調整部１３６は、入力された補償値ｈ
ｐに基づいて、変調信号Ｚを次式により補償し、補償信
号Ｚ’を形成する。 Ｚ’＝Ｚ×ｈｐ また、補償値ｈｐを用いて補償された、補償信号Ｚ’の
振幅Ａ’および位相Ｔ’は次式で表される。 Ａ’＝√（（ｈｐ×Ｉ）２＋（ｈｐ×Ｑ）２） Ｔ’＝ａｒｃｔａｎ（（ｈｐ×Ｑ）／（ｈｐ×Ｉ）） 信号調整部１３６は、補償信号を送信部１４０に出力す
る。The signal adjuster 136 receives the input compensation value h
Based on p, the modulation signal Z is compensated by the following equation to form a compensation signal Z ′. Z ′ = Z × hp The amplitude A ′ and the phase T ′ of the compensation signal Z ′ compensated using the compensation value hp are expressed by the following equations. A ′ = √ ((hp × I) 2 + (hp × Q) 2 ) T ′ = arctan ((hp × Q) / (hp × I)) The signal adjustment unit 136 outputs the compensation signal to the transmission unit 140 I do.
【００２８】送信部１４０において、直交変調部１４２
は、補償信号の直交変調を行い、周波数変換部１４４
は、補償信号の周波数変換処理を行い、さらに、増幅部
１４６は、補償信号の増幅処理を行うことにより、通過
する補償信号を処理し、出力する。予め送信部１４０の
温度に基づいて補償された補償信号を、送信部１４０に
入力することにより、送信部１４０を見かけ上、線形動
作させることができる。そして送信部１４０は、補償信
号を調整し、波形歪の低減された送信信号を形成するこ
とができる。In the transmission section 140, the quadrature modulation section 142
Performs quadrature modulation of the compensation signal, and performs frequency conversion
Performs the frequency conversion processing of the compensation signal, and further, the amplification unit 146 performs the amplification processing of the compensation signal, thereby processing and outputting the passing compensation signal. By inputting a compensation signal previously compensated based on the temperature of the transmission unit 140 to the transmission unit 140, the transmission unit 140 can be apparently linearly operated. Then, transmitting section 140 can adjust the compensation signal and form a transmission signal with reduced waveform distortion.
【００２９】以上、本発明を実施の形態を用いて説明し
たが、本発明の技術的範囲は上記実施の形態に記載の範
囲には限定されない。上記実施の形態に、多様な変更又
は改良を加えることができる。その様な変更又は改良を
加えた形態も本発明の技術的範囲に含まれ得ることが、
特許請求の範囲の記載から明らかである。Although the present invention has been described with reference to the embodiment, the technical scope of the present invention is not limited to the scope described in the above embodiment. Various changes or improvements can be added to the above embodiment. It should be noted that such modified or improved embodiments may be included in the technical scope of the present invention.
It is clear from the description of the claims.
【００３０】[0030]
【発明の効果】上記説明から明らかなように、本発明に
よれば、信号の波形歪を補償するための補償値を有する
補償値テーブルの数を低減することができ、その結果、
歪補償増幅器を小型化することができる。As is apparent from the above description, according to the present invention, the number of compensation value tables having compensation values for compensating waveform distortion of a signal can be reduced, and as a result,
The distortion compensation amplifier can be downsized.
【図１】従来の歪補償増幅器１０を示す。FIG. 1 shows a conventional distortion compensation amplifier 10.
【図２】本発明の一実施形態である、図３において後述
する歪補償増幅器を備える基地局３３０の構成を示す。FIG. 2 shows a configuration of a base station 330 including a distortion compensation amplifier to be described later with reference to FIG. 3, which is an embodiment of the present invention.
【図３】本発明の一実施形態である歪補償増幅器１００
を示す。FIG. 3 is a distortion compensation amplifier 100 according to an embodiment of the present invention;
Is shown.
１０・・歪補償増幅器、２０・・帰還処理部、２２・・
周波数変換部、２４・・直交検波部、２６・・補償値更
新部、３０・・歪補償部、３２・・補償値テーブル、３
４・・電力計算部、３６・・信号調整部、４０・・送信
部、４２・・直交変調部、４４・・周波数変換部、４６
・・増幅部、１００・・歪補償増幅器、１２０・・温度
測定部、１３０・・歪補償部、１３２・・補償値テーブ
ル部、１３４・・電力計算部、１３６・・信号調整部、
１４０・・送信部、１４２・・直交変調部、１４４・・
周波数変換部、１４６・・増幅部、２００・・温度調整
部、２０２・・温度調整装置制御部、２０４・・温度調
整装置、３３０・・基地局、３３２・・空中線、３３４
・・受信部、３３６・・処理部、３３８・・基地局制御
部、３４０・・伝送部10 ··· distortion compensation amplifier, 20 ··· feedback processing section, 22 ···
Frequency conversion section, 24 quadrature detection section, 26 compensation value updating section, 30 distortion compensation section, 32 compensation value table, 3
4 power calculation unit, 36 signal adjustment unit, 40 transmission unit, 42 quadrature modulation unit, 44 frequency conversion unit, 46
..Amplifying unit, 100 distortion compensating amplifier, 120 temperature measuring unit, 130 distortion compensating unit, 132 compensation value table unit, 134 power calculating unit, 136 signal adjusting unit
140 transmission unit, 142 quadrature modulation unit, 144
Frequency conversion unit, 146 amplifying unit, 200 temperature adjusting unit, 202 temperature adjusting unit control unit, 204 temperature adjusting unit, 330 base station, 332 antenna, 334
..Reception unit, 336..Processing unit, 338..Base station control unit, 340..Transmission unit
フロントページの続き Ｆターム(参考） 5J090 AA01 AA41 CA02 CA21 CA92 CN01 FA20 FN07 GN01 KA00 KA53 KA55 MA11 SA13 TA01 5J091 AA01 AA41 CA02 CA21 CA92 FA20 KA00 KA53 KA55 MA11 SA13 TA01 5K004 AA01 AA05 AA08 BB02 BB04 BC01 FE00 FF05 JE00 JF04Continued on the front page F-term (reference) 5J090 AA01 AA41 CA02 CA21 CA92 CN01 FA20 FN07 GN01 KA00 KA53 KA55 MA11 SA13 TA01 5J091 AA01 AA41 CA02 CA21 CA92 FA20 KA00 KA53 KA55 MA11 SA13 TA01 5K004 AA01 JA05 AE03 BC
Claims (1)
と、 前記増幅部の温度状態に対応し、前記増幅部で増幅され
る信号の波形歪を補償するための複数の補償値を予め格
納した補償値テーブルを有する補償値テーブル部と、 前記増幅部の温度を測定する温度測定部と、 前記増幅部の測定温度に基づいて、前記増幅部の温度
を、前記補償値テーブルに対応する温度に調整する温度
調整部と、 前記測定温度に基づいて、前記補償値テーブル部から、
前記測定温度に対応する前記補償値テーブルを選択する
セレクタと、 選択された前記補償値テーブルに含まれる前記補償値を
用いて、前記信号の波形歪を補償する信号調整部とを備
えることを特徴とする歪補償増幅器。An amplifier for amplifying a signal indicating data content; and a plurality of compensation values for compensating for waveform distortion of a signal amplified by the amplifier corresponding to a temperature state of the amplifier. A compensation value table section having a compensation value table, a temperature measurement section for measuring the temperature of the amplification section, and a temperature corresponding to the compensation value table based on the measured temperature of the amplification section. A temperature adjustment unit that adjusts to, based on the measured temperature, from the compensation value table unit,
A selector for selecting the compensation value table corresponding to the measured temperature, and a signal adjustment unit that compensates for waveform distortion of the signal using the compensation value included in the selected compensation value table. Distortion compensation amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000136289A JP4365507B2 (en) | 2000-05-09 | 2000-05-09 | Distortion compensation amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000136289A JP4365507B2 (en) | 2000-05-09 | 2000-05-09 | Distortion compensation amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001320246A true JP2001320246A (en) | 2001-11-16 |
| JP4365507B2 JP4365507B2 (en) | 2009-11-18 |
Family
ID=18644253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000136289A Expired - Lifetime JP4365507B2 (en) | 2000-05-09 | 2000-05-09 | Distortion compensation amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4365507B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004055976A1 (en) * | 2002-12-17 | 2004-07-01 | Matsushita Electric Industrial Co., Ltd. | Distortion compensation table creation method and distortion compensation method |
| JP2004336750A (en) * | 2003-04-30 | 2004-11-25 | Lucent Technol Inc | Enhanced pre-distortion method and apparatus |
| US7092683B2 (en) | 2003-04-01 | 2006-08-15 | Matsushita Electric Industrial Co., Ltd. | Transmission circuit |
| US7139534B2 (en) | 2003-03-05 | 2006-11-21 | Matsushita Electric Industrial Co., Ltd. | Transmission circuit |
| WO2007004252A1 (en) * | 2005-06-30 | 2007-01-11 | Fujitsu Limited | Power amplifier having distortion compensating circuit |
| US7646238B2 (en) | 2007-02-01 | 2010-01-12 | Hitachi Kokusai Electric Inc. | Amplification apparatus |
| JP2016072696A (en) * | 2014-09-26 | 2016-05-09 | 富士通株式会社 | Distortion compensation device and distortion compensation method |
| JP2017220744A (en) * | 2016-06-06 | 2017-12-14 | 日本電気株式会社 | Distortion compensation circuit, distortion compensation method, and transmitter |
-
2000
- 2000-05-09 JP JP2000136289A patent/JP4365507B2/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004055976A1 (en) * | 2002-12-17 | 2004-07-01 | Matsushita Electric Industrial Co., Ltd. | Distortion compensation table creation method and distortion compensation method |
| US7139534B2 (en) | 2003-03-05 | 2006-11-21 | Matsushita Electric Industrial Co., Ltd. | Transmission circuit |
| US7092683B2 (en) | 2003-04-01 | 2006-08-15 | Matsushita Electric Industrial Co., Ltd. | Transmission circuit |
| JP2004336750A (en) * | 2003-04-30 | 2004-11-25 | Lucent Technol Inc | Enhanced pre-distortion method and apparatus |
| WO2007004252A1 (en) * | 2005-06-30 | 2007-01-11 | Fujitsu Limited | Power amplifier having distortion compensating circuit |
| JPWO2007004252A1 (en) * | 2005-06-30 | 2009-01-22 | 富士通株式会社 | Power amplifier having distortion compensation circuit |
| US7663436B2 (en) | 2005-06-30 | 2010-02-16 | Fujitsu Limited | Power amplifier with distortion compensation circuit |
| JP5301831B2 (en) * | 2005-06-30 | 2013-09-25 | 富士通株式会社 | Power amplifier having distortion compensation circuit |
| US7646238B2 (en) | 2007-02-01 | 2010-01-12 | Hitachi Kokusai Electric Inc. | Amplification apparatus |
| JP2016072696A (en) * | 2014-09-26 | 2016-05-09 | 富士通株式会社 | Distortion compensation device and distortion compensation method |
| JP2017220744A (en) * | 2016-06-06 | 2017-12-14 | 日本電気株式会社 | Distortion compensation circuit, distortion compensation method, and transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4365507B2 (en) | 2009-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101390285B (en) | Polar coordinate modulated transmission device, adaptive distortion compensation processing system, polar coordinate modulated transmission method, and adaptive distortion compensation processing meth | |
| JP4801074B2 (en) | Apparatus and method for signal predistortion | |
| US8391808B2 (en) | Method and system for estimating and compensating non-linear distortion in a transmitter using calibration | |
| JP4327848B2 (en) | Adjustment of amplitude and phase characteristics of wireless communication signals generated by transmitters | |
| WO1998023068A1 (en) | Transmitter | |
| WO2001080471A2 (en) | Transmitter linearization using fast predistortion | |
| EP1450482B1 (en) | Circuit and method for compensating for nonlinear distortion of power amplifier | |
| US20050058220A1 (en) | Adaptive control apparatus | |
| JP2001320246A (en) | Distortion compensation amplifier | |
| JP2005269440A (en) | Polar modulation transmitter and polar modulation method | |
| JP4043824B2 (en) | Nonlinear distortion compensation apparatus and nonlinear distortion compensation method | |
| JP5441817B2 (en) | Transmission circuit and transmission method | |
| JP3732824B2 (en) | Communication device | |
| JP4642272B2 (en) | Transmission output correction device | |
| JP2017195471A (en) | Active antenna system | |
| JPH10145146A (en) | Nonlinear distortion compensator | |
| US20060083330A1 (en) | Distortion compensation table creation method and distortion compensation method | |
| JP4142384B2 (en) | Transmitter | |
| JP2007221613A (en) | Distortion compensation method and apparatus | |
| JP2001268151A (en) | Pre-distortion distortion compensator | |
| JP4707631B2 (en) | Polar modulation transmission apparatus and radio communication apparatus | |
| JP4409706B2 (en) | Transmission signal processing apparatus, base station, mobile station, and digital radio communication system | |
| JP2002064411A (en) | Digital transmitter | |
| JP2000031869A (en) | Transmission apparatus and method with pre-distortion distortion compensation function | |
| JP4178696B2 (en) | Mobile station side communication apparatus using CDMA system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070427 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20090811 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20090821 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120828 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 4365507 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130828 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140828 Year of fee payment: 5 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |