JP5290207B2 - スーパーインポーズされた複合チャネルフィルタ - Google Patents
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15585—Relay station antennae loop interference reduction by interference cancellation
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- H—ELECTRICITY
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- H04B15/00—Suppression or limitation of noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15571—Relay station antennae loop interference reduction by signal isolation, e.g. isolation by frequency or by antenna pattern, or by polarization
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Description
本特許出願は、“ADAPTIVE SAME FREQUENCY REPEATER TECHNIQUES”(適応同一周波数中継器技法)という題名を有し、参照されることによって全体がここに組み入れられている、米国仮特許出願一連番号60/904,368(出願日:2007年3月2日)に対する優先権を主張するものである。
“PHYSICAL LAYER REPEATER UTILIZING REAL TIME MEASUREMENT METRICS AND ADAPTIVE ANTENNA ARRAY TO PROMOTE SIGNAL INTEGRITY AND AMPLIFICATION”(信号の完全性及び増幅を向上させるためにリアルタイム測定メトリック及び適応アンテナアレイを利用する物理層中継器)、Attorney Docket Number080603U1、一連番号XX/XXX,XXX;“CLOSED FORM CALCULATION OF TEMPORAL EQUALIZER WEIGHTS USED IN A REPEATER TRANSMITTER LEAKAGE CANCELLATION SYSTEM”(中継器送信機漏れキャンセルシステムにおいて用いられる時間等化器重みの閉形式計算)、Attorney Docket No.080603U2、一連番号XX/XXX,XXX;“USE OF A FILTERBANK IN AN ADAPTIVE ON-CHANNEL REPEATER UTILIZING ADAPTIVE ANTENNA ARRAYS”(適応アンテナアレイを利用する適応オンチャネル中継器におけるフィルタバンクの使用)、AttorneyDocket No.080603U3、一連番号XX/XXX,XXX;“USE OF ADAPTIVE ANTENNA ARRAY IN CONJUNCTION WITH AN ON-CHANNEL REPEATER TO IMPROVE SIGNAL QUALITY”(信号品質を向上させるためのオンライン中継器と連携した適応アンテナアレイの使用)、Attorney Docket No.080603U4、一連番号XX/XXX,XXX;“AUTOMATIC GAIN CONTROL AND FILTERING TECHNIQUES FOR USE IN ON-CHANNEL REPEATER”(オンチャネル中継器において用いるための自動利得制御及びフィルタリング技法)、Attorney Docket No.080603U5、一連番号XX/XXX,XXX;及び“CONFIGURATION OF A REPEATER”(中継器構成)、Attorney Docket No.080603U6、一連番号XX/XXX,XXX、に関連し、各々の特許出願の内容は、その全体が参照されることによってここによって組み入れられている。
ここで、Nsは、データサンプリングの長さであり、Mは、フィルタインパルス応答の長さである。データ及びフィルタ時間領域インパルス応答にゼロをパディングすることによって、時間領域において巡回畳み込みによって線形畳み込みに近似させることに典型的に関連する実質的歪みがない状態で周波数領域でのフィルタ及びデータビンの直接乗算を達成できることが注目されるべきである。
Claims (26)
- 無線環境において利用されるデジタルフィルタ係数を生成するための方法であって、
時間領域内のMサンプルインパルス応答にゼロを添付して長さがNFFTのゼロがパディングされたインパルス応答を生成することであって、M及びNFFTは正の整数であることと、
前記NFFTの長さのゼロがパディングされたインパルス応答をフーリエ変換することと、
前記フーリエ変換されたゼロがパディングされたインパルス応答の循環シフトを行うことと、
周波数領域において一組の循環シフトされた、フーリエ変換されたゼロがパディングされたインパルス応答を合計して一組の複合デジタルフィルタ係数を生成すること、とを備える、方法。 - 周波数領域において一組の循環シフトされた、フーリエ変換されたゼロがパディングされたインパルス応答を合計して複合デジタルフィルタ係数を生成することと、
前記周波数領域複合デジタルフィルタ係数の逆フーリエ変換を行って複合時間領域デジタルフィルタインパルス応答を得ること、とをさらに備える請求項1に記載の方法。 - 前記生成されたフィルタ係数を周波数ビン乗算器ブロックに搬送することをさらに備える請求項1に記載の方法。
- 前記生成されたデジタルフィルタ係数を中継されるべき信号ブロックの一組の周波数領域ビンに適用することをさらに備える請求項3に記載の方法。
- 時間領域において前記Mビンインパルス応答を生成することをさらに備える請求項1に記載の方法。
- Nsの時間領域信号サンプルにゼロを添付してゼロがパディングされた時間サンプルのNFFTブロックを形成することによって信号ブロックの一組の周波数領域ビンを生成することであって、Ns及びNFFTは正の整数であることと、
前記ゼロがパディングされた時間サンプルのフーリエ変換を行って一組の周波数領域ビンを生成すること、とを備える請求項4に記載の方法。 - NFFTは、M+Ns−1と等しいかそれよりも大きい請求項6に記載の方法。
- 前記生成された複合デジタルフィルタ係数は、中継されるべき予め決められた一組の周波数をフィルタリングするように設計される請求項4に記載の方法。
- 前記Mサンプルインパルス応答は、少なくとも1つの産業標準の波形プロパティに一致するように設計される請求項8に記載の方法。
- 中継されるべき前記周波数の組は、サービスプロバイダの動作帯域内の一組の副帯域を備える請求項9に記載の方法。
- 中継されるべき前記周波数の組は、前記サービスプロバイダと関連づけられた一組の予め決められた周波数を備える請求項9に記載の方法。
- 中継されるべき前記周波数の組は、次の動作、すなわち、
前記周波数の組の表示を搬送するメッセージを受信すること、
前記メッセージ内の前記表示から前記周波数の組を抽出することを行うことによって決定される請求項8に記載の方法。 - 前記メッセージは、ブロードキャストチャネル又は管理フレーム、又は指示されたメッセージ、又は短メッセージサービスメッセージのうちの少なくとも1つである請求項11に記載の方法。
- 中継されるべき前記周波数の組は、前記セルラー信号のセル探索において取得される請求項8に記載の方法。
- 前記セル探索は、中継器内に常駐するモデムによって行われる請求項12に記載の方法。
- 前記予め決められた周波数の組は、前記周波数中継器内に格納される請求項15に記載の方法。
- 前記生成されたフィルタマスクを中継器内に格納することをさらに備える請求項3に記載の方法。
- 無線デバイスであって、
時間領域においてMサンプルインパルス応答を生成し、アレイパディング動作を実行し、前記Mビンインパルス応答又はNFFTビン周波数シーケンスのうちの少なくとも1つのフーリエ変換を計算し、NFFTビンフーリエ変換されたインパルス応答の循環シフトを行い、一組のフーリエ変換されたゼロがパディングされたインパルス応答を合計し、前記合計されたフーリエ変換されたインパルス応答を利用して複合マスクフィルタを生成するように構成されたプロセッサであって、Mは正の整数であり、NFFTは正の整数であるプロセッサと、
前記プロセッサに結合されたメモリと、を備える、無線デバイス。 - 前記プロセッサは、前記生成されたフィルタマスクを周波数ビン乗算器ブロックに伝えるようにさらに構成される請求項18に記載のデバイス。
- 前記プロセッサは、前記生成されたフィルタマスクを中継されるべき信号ブロックの一組の周波数領域ビンに適用するようにさらに構成される請求項19に記載のデバイス。
- 中継されるべき前記信号ブロックは、サービスプロバイダの動作帯域内の一組の副帯域を備える請求項20に記載のデバイス。
- 前記副帯域の組は、前記サービスプロバイダと関連づけられた一組の予め決められた周波数を備える請求項21に記載のデバイス。
- 前記副帯域の組は、次の動作、すなわち、
前記周波数の組の表示を搬送するメッセージを受信すること、
前記メッセージ内の前記表示から前記周波数の組を抽出することを行うことによって決定される請求項21に記載のデバイス。 - 前記プロセッサは、前記生成された複合フィルタ係数の組を格納するようにさらに構成される請求項17に記載のデバイス。
- 無線環境において動作する装置であって、
時間領域においてMビンインパルス応答をNFFTビンの長さまでゼロをパディングするための手段であって、M及びNFFTは正の整数である手段と、
前記NFFTビンのゼロがパディングされたインパルス応答をフーリエ変換するための手段と、
前記フーリエ変換されたゼロがパディングされたインパルス応答の循環シフトを行うための手段と、
周波数領域において一組の循環シフトされた、フーリエ変換されたゼロがパディングされたインパルス応答を合計してフィルタマスクを生成するための手段と、
前記生成されたフィルタマスクを周波数ビン乗算器ブロックに搬送するための手段と、
前記生成されたフィルタマスクを中継されるべき信号ブロックの一組の周波数領域ビンに適用するための手段と、を備える、装置。 - コンピュータによって読み取り可能な記録媒体であって、
時間領域においてMビンインパルス応答をNFFTビンの長さまでパディングすることをコンピュータに行わせるための符号であって、M及びNFFTは正の整数である符号と、
前記NFFTビンのゼロがパディングされたインパルス応答をフーリエ変換することをコンピュータに行わせるための符号と、
前記フーリエ変換されたゼロがパディングされたインパルス応答の循環シフトを行うことをコンピュータに行わせるための符号と、
周波数領域において一組の循環シフトされた、フーリエ変換されたゼロがパディングされたインパルス応答を合計してフィルタマスクを生成することをコンピュータに行わせるための符号と、
前記生成されたフィルタマスクを中継されるべき信号ブロックの一組の周波数領域ビンに適用することをコンピュータに行わせるための符号と、が格納された、コンピュータによって読み取り可能な記録媒体。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90436807P | 2007-03-02 | 2007-03-02 | |
| US60/904,368 | 2007-03-02 | ||
| PCT/US2008/055738 WO2008109575A2 (en) | 2007-03-02 | 2008-03-03 | Superimposed composite channel filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010521104A JP2010521104A (ja) | 2010-06-17 |
| JP5290207B2 true JP5290207B2 (ja) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2009552830A Expired - Fee Related JP5290207B2 (ja) | 2007-03-02 | 2008-03-03 | スーパーインポーズされた複合チャネルフィルタ |
| JP2009552827A Expired - Fee Related JP5134016B2 (ja) | 2007-03-02 | 2008-03-03 | 信号品質を向上させるためのオンライン中継器と連携した適応アンテナアレイの使用 |
| JP2009552829A Expired - Fee Related JP5118155B2 (ja) | 2007-03-02 | 2008-03-03 | 中継器構成 |
| JP2009552828A Expired - Fee Related JP5155339B2 (ja) | 2007-03-02 | 2008-03-03 | オンチャネル中継器において用いるための自動利得制御及びフィルタリング技法 |
| JP2009552825A Expired - Fee Related JP5043961B2 (ja) | 2007-03-02 | 2008-03-03 | 中継器送信機漏れキャンセルシステムにおいて用いられる時間等化器重みの閉形式計算 |
| JP2009552826A Pending JP2010520719A (ja) | 2007-03-02 | 2008-03-03 | 適応アンテナアレイを利用する適応オンチャネル中継器におけるフィルタバンクの使用 |
| JP2009552824A Expired - Fee Related JP5155338B2 (ja) | 2007-03-02 | 2008-03-03 | 信号の完全性及び増幅を促進するためにリアルタイム測定メトリック及び適応アンテナアレイを利用する物理層中継器 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2009552827A Expired - Fee Related JP5134016B2 (ja) | 2007-03-02 | 2008-03-03 | 信号品質を向上させるためのオンライン中継器と連携した適応アンテナアレイの使用 |
| JP2009552829A Expired - Fee Related JP5118155B2 (ja) | 2007-03-02 | 2008-03-03 | 中継器構成 |
| JP2009552828A Expired - Fee Related JP5155339B2 (ja) | 2007-03-02 | 2008-03-03 | オンチャネル中継器において用いるための自動利得制御及びフィルタリング技法 |
| JP2009552825A Expired - Fee Related JP5043961B2 (ja) | 2007-03-02 | 2008-03-03 | 中継器送信機漏れキャンセルシステムにおいて用いられる時間等化器重みの閉形式計算 |
| JP2009552826A Pending JP2010520719A (ja) | 2007-03-02 | 2008-03-03 | 適応アンテナアレイを利用する適応オンチャネル中継器におけるフィルタバンクの使用 |
| JP2009552824A Expired - Fee Related JP5155338B2 (ja) | 2007-03-02 | 2008-03-03 | 信号の完全性及び増幅を促進するためにリアルタイム測定メトリック及び適応アンテナアレイを利用する物理層中継器 |
Country Status (10)
| Country | Link |
|---|---|
| US (7) | US8116239B2 (ja) |
| EP (7) | EP2119042A2 (ja) |
| JP (7) | JP5290207B2 (ja) |
| KR (10) | KR101123601B1 (ja) |
| CN (7) | CN101689913B (ja) |
| BR (6) | BRPI0808538A2 (ja) |
| CA (7) | CA2677914A1 (ja) |
| RU (7) | RU2464707C2 (ja) |
| TW (7) | TWI370636B (ja) |
| WO (7) | WO2008109570A2 (ja) |
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| US8121058B2 (en) * | 2002-12-10 | 2012-02-21 | Investors Life Insurance Corporation | Cognitive IP radio with repeaters |
| US7355470B2 (en) | 2006-04-24 | 2008-04-08 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning |
| US7327803B2 (en) | 2004-10-22 | 2008-02-05 | Parkervision, Inc. | Systems and methods for vector power amplification |
| US9106316B2 (en) | 2005-10-24 | 2015-08-11 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification |
| US8013675B2 (en) | 2007-06-19 | 2011-09-06 | Parkervision, Inc. | Combiner-less multiple input single output (MISO) amplification with blended control |
| US8334722B2 (en) | 2007-06-28 | 2012-12-18 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation and amplification |
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