[go: up one dir, main page]

TWI265741B - CDMA system transmission matrix coefficient calculation - Google Patents

CDMA system transmission matrix coefficient calculation

Info

Publication number
TWI265741B
TWI265741B TW092117188A TW92117188A TWI265741B TW I265741 B TWI265741 B TW I265741B TW 092117188 A TW092117188 A TW 092117188A TW 92117188 A TW92117188 A TW 92117188A TW I265741 B TWI265741 B TW I265741B
Authority
TW
Taiwan
Prior art keywords
channel
real
hermitian
coefficient calculation
cdma system
Prior art date
Application number
TW092117188A
Other languages
English (en)
Other versions
TW200405738A (en
Inventor
Chayil S Timmerman
Ryan Samuel Buchert
Original Assignee
Interdigital Tech Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of TW200405738A publication Critical patent/TW200405738A/zh
Application granted granted Critical
Publication of TWI265741B publication Critical patent/TWI265741B/zh

Links

Classifications

    • 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
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70707—Efficiency-related aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Complex Calculations (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Communication Control (AREA)
  • Radio Relay Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Error Detection And Correction (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Radio Transmission System (AREA)
TW092117188A 2002-06-28 2003-06-24 CDMA system transmission matrix coefficient calculation TWI265741B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39220202P 2002-06-28 2002-06-28
US10/264,192 US7203181B2 (en) 2002-06-28 2002-10-03 CDMA system transmission matrix coefficient calculation

Publications (2)

Publication Number Publication Date
TW200405738A TW200405738A (en) 2004-04-01
TWI265741B true TWI265741B (en) 2006-11-01

Family

ID=27737165

Family Applications (5)

Application Number Title Priority Date Filing Date
TW092211534U TWM240734U (en) 2002-06-28 2003-06-24 User equipment calculating CDMA system transmission matrix coefficient
TW095123033A TWI313111B (en) 2002-06-28 2003-06-24 Cdma system transmission matrix coefficient calculation
TW092211535U TW588911U (en) 2002-06-28 2003-06-24 Base station calculating CDMA system transmission matrix coefficient
TW093105014A TWI324860B (en) 2002-06-28 2003-06-24 Cdma system transmission matrix coefficient buchert
TW092117188A TWI265741B (en) 2002-06-28 2003-06-24 CDMA system transmission matrix coefficient calculation

Family Applications Before (4)

Application Number Title Priority Date Filing Date
TW092211534U TWM240734U (en) 2002-06-28 2003-06-24 User equipment calculating CDMA system transmission matrix coefficient
TW095123033A TWI313111B (en) 2002-06-28 2003-06-24 Cdma system transmission matrix coefficient calculation
TW092211535U TW588911U (en) 2002-06-28 2003-06-24 Base station calculating CDMA system transmission matrix coefficient
TW093105014A TWI324860B (en) 2002-06-28 2003-06-24 Cdma system transmission matrix coefficient buchert

Country Status (16)

Country Link
US (2) US7203181B2 (zh)
EP (1) EP1529358B1 (zh)
JP (2) JP2005532014A (zh)
KR (8) KR100625756B1 (zh)
CN (3) CN1666439B (zh)
AT (1) ATE335319T1 (zh)
AU (1) AU2003280400A1 (zh)
CA (1) CA2490810A1 (zh)
DE (3) DE60307287T2 (zh)
ES (1) ES2264767T3 (zh)
GB (1) GB0315283D0 (zh)
HK (2) HK1062118A2 (zh)
MX (1) MXPA04012963A (zh)
NO (1) NO20050467L (zh)
TW (5) TWM240734U (zh)
WO (1) WO2004004159A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6792032B2 (en) * 2001-12-28 2004-09-14 Interdigital Technology Corporation CDMA system transmission matrix coefficient calculation
US8340216B2 (en) 2005-03-18 2012-12-25 Qualcomm Incorporated Space-time scrambling for cellular systems
KR100769955B1 (ko) 2005-12-10 2007-10-25 한국전자통신연구원 무선 통신 시스템 수신단의 검파 장치
US10489154B2 (en) * 2017-11-28 2019-11-26 Intel Corporation Apparatus and method for complex multiply and accumulate
US11814268B2 (en) * 2021-08-13 2023-11-14 Toyota Motor Engineering & Manufacturing North America, Inc. Component lifts having support assemblies
US20230093484A1 (en) * 2021-09-23 2023-03-23 Apple Inc. Systems and methods for de-correlating coded signals in dual port transmissions
CN115809041B (zh) * 2022-12-30 2023-04-25 中科南京智能技术研究院 一种可配置的补码运算装置及计算设备

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793759A (en) * 1995-08-25 1998-08-11 Terayon Corporation Apparatus and method for digital data transmission over video cable using orthogonal cyclic codes
JP2991170B2 (ja) * 1997-10-01 1999-12-20 日本電気株式会社 Ｃｄｍａ受信装置および方法
US6301293B1 (en) 1998-08-04 2001-10-09 Agere Systems Guardian Corp. Detectors for CDMA systems
US6515978B1 (en) 1999-04-19 2003-02-04 Lucent Technologies Inc. Methods and apparatus for downlink diversity in CDMA using Walsh codes
FR2793363B1 (fr) 1999-05-04 2001-07-06 France Telecom Procede de detection conjointe d'un ensemble de codes cdma
US6449246B1 (en) 1999-09-15 2002-09-10 Telcordia Technologies, Inc. Multicarrier personal access communication system
CA2388024C (en) 1999-10-19 2008-04-15 Interdigital Technology Corporation Receiver for multiuser detection of cdma signals
US6324209B1 (en) * 2000-02-28 2001-11-27 Golden Bridge Technology Inc. Multi-channel spread spectrum system
FR2813727B1 (fr) 2000-09-01 2002-11-29 Thomson Csf Procede et dispositif pour ordonner des signaux provenant de multi-utilisateurs
US7020175B2 (en) 2000-09-21 2006-03-28 Motorola, Inc. MMSE reception of DS-CDMA with transmit diversity
TW540200B (en) 2000-11-09 2003-07-01 Interdigital Tech Corp Single user detection
US6466611B1 (en) * 2001-02-07 2002-10-15 Motorola, Inc. Multi-user detection using a finite-impulse-response matrix filter
JP3947770B2 (ja) * 2001-03-12 2007-07-25 直樹 末広 多種拡散系列を用いたｃｄｍａ通信方式
KR100383594B1 (ko) * 2001-06-01 2003-05-14 삼성전자주식회사 통신시스템의 하방향링크 공동검출 방법 및 장치
US6792032B2 (en) 2001-12-28 2004-09-14 Interdigital Technology Corporation CDMA system transmission matrix coefficient calculation
CN1170374C (zh) * 2002-06-20 2004-10-06 大唐移动通信设备有限公司 一种适用于频率选择性衰落信道的空时编译码方法

Also Published As

Publication number Publication date
TW588911U (en) 2004-05-21
US20070189238A1 (en) 2007-08-16
KR100597062B1 (ko) 2006-07-07
KR20050094488A (ko) 2005-09-27
JP2008079332A (ja) 2008-04-03
US7203181B2 (en) 2007-04-10
NO20050467L (no) 2005-03-21
EP1529358B1 (en) 2006-08-02
KR100685244B1 (ko) 2007-02-27
KR100625756B1 (ko) 2006-09-21
EP1529358A4 (en) 2005-09-14
TW200509564A (en) 2005-03-01
TWI313111B (en) 2009-08-01
TWI324860B (en) 2010-05-11
JP2005532014A (ja) 2005-10-20
KR20040087999A (ko) 2004-10-15
DE60307287D1 (de) 2006-09-14
CN1666439B (zh) 2010-04-14
KR200329284Y1 (ko) 2003-10-08
WO2004004159A1 (en) 2004-01-08
TWM240734U (en) 2004-08-11
KR20040087987A (ko) 2004-10-15
MXPA04012963A (es) 2005-05-16
DE20309952U1 (de) 2003-11-13
HK1061181A2 (zh) 2004-08-27
ATE335319T1 (de) 2006-08-15
US7693113B2 (en) 2010-04-06
CN1666439A (zh) 2005-09-07
GB0315283D0 (en) 2003-08-06
CN2728108Y (zh) 2005-09-21
DE20309951U1 (de) 2003-09-18
AU2003280400A1 (en) 2004-01-19
CA2490810A1 (en) 2004-01-08
KR200328245Y1 (ko) 2003-09-26
TW200718045A (en) 2007-05-01
EP1529358A1 (en) 2005-05-11
KR20050016919A (ko) 2005-02-21
US20040001465A1 (en) 2004-01-01
KR20050090358A (ko) 2005-09-13
CN2648710Y (zh) 2004-10-13
DE60307287T2 (de) 2007-10-18
TW200405738A (en) 2004-04-01
KR20050090352A (ko) 2005-09-13
HK1062118A2 (zh) 2004-09-17
ES2264767T3 (es) 2007-01-16

Similar Documents

Publication Publication Date Title
NO20081291L (no) Flerbrukerdetektor for variable spredningsfaktorer
AU2002227241A1 (en) Simple block space time transmit diversity using multiple spreading codes
US6625201B1 (en) Coherent receiver with channel estimator
WO2006132592A3 (en) Method and apparatus for reducing interference in spread spectrum signals using spreading code cross-correlations
MY148722A (en) Pilot symbol transmission in wireless communication systems
WO2002073937A3 (en) Wireless communications methods and systems for long-code and other spread spectrum waveform processing
WO2001001595A8 (en) Rake combining methods and apparatus using weighting factors derived from knowledge of spread spectrum signal characteristics
WO2007102897A3 (en) Quasi-linear interference cancellation for wireless communication
AU7056500A (en) Apparatus and methods for receiving information using variable length accumulation searchers
DE69906811D1 (de) Verfahren und vorrichtung zur interferenzunterdrückung in spreizspektrumnachrichtenübertragungssystemen
TWI265741B (en) CDMA system transmission matrix coefficient calculation
CA2348768A1 (en) Slotted mode code usage in a cellular communications system
MY131621A (en) Multi-carrier cdma transmission system, transmitting apparatus and receiving apparatus used in this system, and multi-carrier cdma transmission method
WO2002043354A3 (en) Asymmetric orthogonal codes for wireless system receivers with multiplication-free correlators
HK1055209A2 (zh) 使用接收機的用戶設備傳輸處理函數
EP0849905A3 (en) CDMA Multi-code transmitter
AU2003288645A1 (en) Training sequence detection scheme and device of downlink in tdd/cdma system
SE9802109D0 (sv) One-bit correlator rake receiver
MXPA04006373A (es) Caculo de coeficiente de matriz de transmision en sistema cdma.
WO2006020657A3 (en) Frequency domain equalization
MX9504246A (es) Metodo y aparato para la comunicacion inhalambrica entre multiples usuarios.
TR200102951T2 (tr) Çok sayıda sinyal zamanlamasını kullanarak ardışık iptal için yöntem ve aygıt.
WO2003005660A3 (en) Method of initialising the tap weights in an adaptive equaliser
Manatsavee et al. Performance of PIC, SIC and decorrelating detectors for MUD technique in WCDMA system
WO2007051189A3 (en) Varying scrambling/ovsf codes within a td-cdma slot to overcome jamming effect by a dominant interferer

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees