KR100858208B1 - 무선 통신 시스템에서 수신 신호의 간섭을 정확하게추정하기 위한 시스템 및 방법 - Google Patents

무선 통신 시스템에서 수신 신호의 간섭을 정확하게추정하기 위한 시스템 및 방법 Download PDF

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KR100858208B1
KR100858208B1 KR1020017014260A KR20017014260A KR100858208B1 KR 100858208 B1 KR100858208 B1 KR 100858208B1 KR 1020017014260 A KR1020017014260 A KR 1020017014260A KR 20017014260 A KR20017014260 A KR 20017014260A KR 100858208 B1 KR100858208 B1 KR 100858208B1
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signal
interference
pilot
energy
estimate
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KR20020012570A (ko
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나갑후샤나 티. 신드후샤야나
에듀알도 에이. 에스. 에스티브즈
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콸콤 인코포레이티드
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    • 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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7113—Determination of path profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • 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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • 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
    • H04L25/06—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/067—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing soft decisions, i.e. decisions together with an estimate of reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
KR1020017014260A 1999-05-11 2000-05-09 무선 통신 시스템에서 수신 신호의 간섭을 정확하게추정하기 위한 시스템 및 방법 Expired - Lifetime KR100858208B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/310,053 1999-05-11
US09/310,053 US6661832B1 (en) 1999-05-11 1999-05-11 System and method for providing an accurate estimation of received signal interference for use in wireless communications systems

Publications (2)

Publication Number Publication Date
KR20020012570A KR20020012570A (ko) 2002-02-16
KR100858208B1 true KR100858208B1 (ko) 2008-09-10

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KR1020017014260A Expired - Lifetime KR100858208B1 (ko) 1999-05-11 2000-05-09 무선 통신 시스템에서 수신 신호의 간섭을 정확하게추정하기 위한 시스템 및 방법

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Country Link
US (2) US6661832B1 (enExample)
EP (2) EP1783922B1 (enExample)
JP (4) JP5198697B2 (enExample)
KR (1) KR100858208B1 (enExample)
CN (1) CN1160872C (enExample)
AT (1) ATE361588T1 (enExample)
AU (1) AU4999900A (enExample)
BR (1) BR0010420A (enExample)
DE (1) DE60034669T2 (enExample)
HK (1) HK1043891B (enExample)
TW (1) TW462150B (enExample)
WO (1) WO2000069090A1 (enExample)

Families Citing this family (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3031354B1 (ja) * 1998-09-30 2000-04-10 日本電気株式会社 Ｃｄｍａ受信装置及びそのマルチパスのフィンガ割り当て方法並びにその制御プログラムを記録した記録媒体
US6891815B1 (en) * 1999-03-15 2005-05-10 Young-Joon Song Pilot signals for synchronization and/or channel estimation
US6721299B1 (en) * 1999-03-15 2004-04-13 Lg Information & Communications, Ltd. Pilot signals for synchronization and/or channel estimation
US7643540B2 (en) * 1999-03-15 2010-01-05 Lg Electronics Inc. Pilot signals for synchronization and/or channel estimation
KR100294711B1 (ko) * 1999-03-15 2001-07-12 서평원 최적의 파일럿 심볼을 이용한 프레임 동기 방법
US7496132B2 (en) * 1999-03-15 2009-02-24 Kg Electronics Inc. Pilot signals for synchronization and/or channel estimation
US6661832B1 (en) * 1999-05-11 2003-12-09 Qualcomm Incorporated System and method for providing an accurate estimation of received signal interference for use in wireless communications systems
US6377607B1 (en) * 1999-05-13 2002-04-23 Qualcomm Incorporated System and method for performing accurate demodulation of turbo-encoded signals via pilot assisted coherent demodulation
FI991448L (fi) * 1999-06-24 2000-12-25 Nokia Networks Oy Lähetystehon säätömenetelmä
US6426971B1 (en) * 1999-09-13 2002-07-30 Qualcomm Incorporated System and method for accurately predicting signal to interference and noise ratio to improve communications system performance
US6594318B1 (en) * 1999-12-02 2003-07-15 Qualcomm Incorporated Method and apparatus for computing soft decision input metrics to a turbo decoder
DE19958383A1 (de) * 1999-12-03 2001-06-07 Bosch Gmbh Robert Verfahren zur Regelung der Sendeleistung einer Sendestation und Empfangsstation zur Durchführung des Verfahrens
US6542538B2 (en) * 2000-01-10 2003-04-01 Qualcomm Incorporated Method and apparatus for testing wireless communication channels
FI115268B (fi) * 2000-05-12 2005-03-31 Nokia Corp Tehonsäätö radiojärjestelmässä
US7230910B2 (en) * 2001-01-30 2007-06-12 Lucent Technologies Inc. Optimal channel sounding system
EP1241663A1 (en) * 2001-03-13 2002-09-18 Koninklijke KPN N.V. Method and device for determining the quality of speech signal
US6990137B2 (en) * 2001-05-17 2006-01-24 Qualcomm, Incorporated System and method for received signal prediction in wireless communications systems
US7170924B2 (en) * 2001-05-17 2007-01-30 Qualcomm, Inc. System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system
US6876844B1 (en) 2001-06-29 2005-04-05 National Semiconductor Corporation Cascading-synchronous mixer and method of operation
US7035659B1 (en) * 2001-10-22 2006-04-25 Via Telecom Co., Ltd. Estimation of forward link signal-to-noise ratio
US7450631B2 (en) * 2001-10-26 2008-11-11 Intel Corporation Metric correction for multi user detection, for long codes DS-CDMA
SE0103683D0 (sv) * 2001-11-06 2001-11-06 Ericsson Telefon Ab L M Method and arrangement in a communication system
US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US7876810B2 (en) * 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation for CDMA systems
US7715508B2 (en) 2005-11-15 2010-05-11 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US8005128B1 (en) 2003-09-23 2011-08-23 Rambus Inc. Methods for estimation and interference cancellation for signal processing
US7039001B2 (en) * 2002-10-29 2006-05-02 Qualcomm, Incorporated Channel estimation for OFDM communication systems
US7042857B2 (en) 2002-10-29 2006-05-09 Qualcom, Incorporated Uplink pilot and signaling transmission in wireless communication systems
US8412106B2 (en) 2002-11-04 2013-04-02 Xr Communications, Llc Directed wireless communication
DE10258462A1 (de) * 2002-12-13 2004-07-15 Infineon Technologies Ag Hardware-Unterstützung für die SINR-Berechnung und die Berechnung von Normierungsfaktoren für demodulierte Symbole in UMTS-Mobilstationen
GB2401004B (en) * 2003-04-22 2007-01-17 Toshiba Res Europ Ltd Rake receiver
US7177297B2 (en) 2003-05-12 2007-02-13 Qualcomm Incorporated Fast frequency hopping with a code division multiplexed pilot in an OFDMA system
KR100631668B1 (ko) * 2003-05-13 2006-10-09 엘지전자 주식회사 고속 데이터 전송 방식 이동 통신 시스템에서의 이동국수신 다이버시티 장치 및 방법
US7450556B2 (en) * 2003-07-10 2008-11-11 Via Telecom Co., Ltd. Method and apparatus estimating cell interference and noise for CDMA packet data channels
US7443916B2 (en) * 2003-11-24 2008-10-28 2Wire, Inc. Method and apparatus for communication in the presence of impulse noise
US6917904B1 (en) 2004-01-12 2005-07-12 Telefonaktiebolaget L M Ericsson (Publ) Method of and apparatus for path-searcher window positioning
US7362792B2 (en) 2004-01-12 2008-04-22 Telefonaktiebolaget Lm Ericsson (Publ) Method of and apparatus for computation of unbiased power delay profile
US8611283B2 (en) 2004-01-28 2013-12-17 Qualcomm Incorporated Method and apparatus of using a single channel to provide acknowledgement and assignment messages
US7421015B2 (en) 2004-02-26 2008-09-02 2Wire, Inc. Bit-loading in multicarrier communication systems in the presence of an asymmetric, correlated gaussian noise sources
US7630688B2 (en) * 2004-03-31 2009-12-08 Interdigital Technology Corporation Mitigation of wireless transmit/receive unit (WTRU) to WTRU interference using multiple antennas or beams
US9025638B2 (en) * 2004-06-16 2015-05-05 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus to compensate for receiver frequency error in noise estimation processing
US8891349B2 (en) 2004-07-23 2014-11-18 Qualcomm Incorporated Method of optimizing portions of a frame
US8194722B2 (en) * 2004-10-11 2012-06-05 Broadcom Corporation Various methods and apparatuses for impulse noise mitigation
US8325863B2 (en) * 2004-10-12 2012-12-04 Qualcomm Incorporated Data detection and decoding with considerations for channel estimation errors due to guard subbands
EP1807988B1 (en) * 2004-11-05 2015-12-09 NVIDIA Technology UK Limited Method for computing log-likelihood ratios for coded quadrature modulated signals
US7953163B2 (en) * 2004-11-30 2011-05-31 Broadcom Corporation Block linear equalization in a multicarrier communication system
US8831115B2 (en) 2004-12-22 2014-09-09 Qualcomm Incorporated MC-CDMA multiplexing in an orthogonal uplink
US8238923B2 (en) 2004-12-22 2012-08-07 Qualcomm Incorporated Method of using shared resources in a communication system
US7522555B2 (en) 2005-01-21 2009-04-21 Intel Corporation Techniques to manage channel prediction
US7852950B2 (en) * 2005-02-25 2010-12-14 Broadcom Corporation Methods and apparatuses for canceling correlated noise in a multi-carrier communication system
US9374257B2 (en) * 2005-03-18 2016-06-21 Broadcom Corporation Methods and apparatuses of measuring impulse noise parameters in multi-carrier communication systems
US7826516B2 (en) 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
US7711075B2 (en) 2005-11-15 2010-05-04 Tensorcomm Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US7991088B2 (en) 2005-11-15 2011-08-02 Tommy Guess Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
US8339930B2 (en) * 2005-05-16 2012-12-25 Qualcomm Incorporated Pilot transmission and channel estimation with pilot weighting
US7702048B2 (en) * 2005-11-15 2010-04-20 Tensorcomm, Incorporated Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
JP4939888B2 (ja) * 2005-10-05 2012-05-30 パナソニック株式会社 無線通信装置
US20070110135A1 (en) 2005-11-15 2007-05-17 Tommy Guess Iterative interference cancellation for MIMO-OFDM receivers
US7813439B2 (en) * 2006-02-06 2010-10-12 Broadcom Corporation Various methods and apparatuses for impulse noise detection
US8144814B2 (en) * 2006-05-22 2012-03-27 Qualcomm Incorporated Signal quality estimator
US8326339B2 (en) * 2006-08-04 2012-12-04 Broadcom Corporation Method and apparatus to compute a noise power estimate in a WCDMA network
US8229708B2 (en) * 2006-11-27 2012-07-24 Qualcomm Incorporated Methods and apparatus for signal and interference energy estimation in a communication system
FR2916538B1 (fr) * 2007-05-25 2010-09-10 Thales Sa Traitement des interferences d'un signal radiofrequence par inversion de puissance
WO2009054938A1 (en) * 2007-10-19 2009-04-30 Quantenna Communications, Inc. Mitigating interference in a coded communication system
US8126338B2 (en) * 2007-11-07 2012-02-28 Discovery Semiconductors, Inc. Method and apparatus for repeaterless high-speed optical transmission over single-mode fiber using coherent receiver and electronic dispersion compensation
KR100932788B1 (ko) * 2007-12-14 2009-12-21 한국전자통신연구원 선박용 통신 서비스 장치 및 탐색 구조 단말 장치
US8605837B2 (en) * 2008-10-10 2013-12-10 Broadcom Corporation Adaptive frequency-domain reference noise canceller for multicarrier communications systems
US8135436B2 (en) 2009-03-13 2012-03-13 Intel Mobile Communications GmbH Mobile radio communication devices and methods for controlling a mobile radio communication device
US8953464B2 (en) * 2010-05-10 2015-02-10 Qualcomm Incorporated Systems, methods, and computer program products for compensating for interference in sector transmissions
RU2446558C1 (ru) * 2011-01-31 2012-03-27 Анна Валерьевна Хуторцева Способ дифференциальной импульсно-кодовой модуляции - демодуляции сигналов
US8520428B2 (en) * 2011-03-25 2013-08-27 Intel Corporation Combined data level-shifter and DE-skewer
CN103731939A (zh) * 2013-12-31 2014-04-16 上海华勤通讯技术有限公司 双网移动终端
TWI594380B (zh) 2015-05-21 2017-08-01 穩懋半導體股份有限公司 封裝結構及三維封裝結構
RU2628918C1 (ru) * 2016-08-03 2017-08-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" Гибридный функциональный цифроаналоговый преобразователь со сплайновой аппроксимацией n-го порядка
RU2651640C1 (ru) * 2017-02-07 2018-04-23 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия им. Адмирала Флота Советского Союза Н.Г. Кузнецова" Способ сплайн-фильтрации сигналов

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406588A (en) * 1993-05-28 1995-04-11 Motorola, Inc. Method and apparatus for mitigating distortion effects in the determination of signal usability
EP0776105A1 (en) * 1995-06-13 1997-05-28 Ntt Mobile Communications Network Inc. Cdma demodulator
WO1998020617A1 (en) * 1996-11-06 1998-05-14 Qualcomm Incorporated Soft decision output decoder for decoding convolutionally encoded codewords
KR19990088251A (ko) * 1998-05-13 1999-12-27 윤종용 이동통신시스템의이동국채널추정장치및방법

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901307A (en) 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
JPS63180221A (ja) * 1987-01-21 1988-07-25 Nippon Telegr & Teleph Corp <Ntt> 軟判定復号方式
IT1229647B (it) * 1989-04-21 1991-09-06 Missier Gabriele Trasmetal Cabina per la verniciatura elettrostatica.
US5056109A (en) 1989-11-07 1991-10-08 Qualcomm, Inc. Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system
US5109390A (en) 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
US5103459B1 (en) 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5568483A (en) 1990-06-25 1996-10-22 Qualcomm Incorporated Method and apparatus for the formatting of data for transmission
DK1126437T3 (da) 1991-06-11 2004-11-08 Qualcomm Inc Vocoder med variabel hastighed
US5245629A (en) 1991-10-28 1993-09-14 Motorola, Inc. Method for compensating for capacity overload in a spread spectrum communication system
US5537443A (en) * 1993-01-19 1996-07-16 Ntt Mobile Communications Network Inc. Interference signal cancelling method, receiver and communication system using the same
US5396516A (en) 1993-02-22 1995-03-07 Qualcomm Incorporated Method and system for the dynamic modification of control paremeters in a transmitter power control system
US5440582A (en) * 1993-05-28 1995-08-08 Motorola, Inc. Method and apparatus for determining signal usability
US5566206A (en) 1993-06-18 1996-10-15 Qualcomm Incorporated Method and apparatus for determining data rate of transmitted variable rate data in a communications receiver
JP3457357B2 (ja) 1993-07-23 2003-10-14 株式会社日立製作所 スペクトル拡散通信システム、送信電力制御方法、移動端末装置及び基地局
US5548808A (en) 1993-12-08 1996-08-20 Motorola, Inc. Method for performing a handoff in a communication system
US5774496A (en) 1994-04-26 1998-06-30 Qualcomm Incorporated Method and apparatus for determining data rate of transmitted variable rate data in a communications receiver
JP2993554B2 (ja) * 1994-05-12 1999-12-20 エヌ・ティ・ティ移動通信網株式会社 送信電力制御法および前記送信電力制御法を用いた通信装置
US5603096A (en) 1994-07-11 1997-02-11 Qualcomm Incorporated Reverse link, closed loop power control in a code division multiple access system
US5822318A (en) 1994-07-29 1998-10-13 Qualcomm Incorporated Method and apparatus for controlling power in a variable rate communication system
JPH08335898A (ja) * 1995-06-07 1996-12-17 N T T Ido Tsushinmo Kk Ｃｄｍａ信号受信機
US5577025A (en) 1995-06-30 1996-11-19 Qualcomm Incorporated Signal acquisition in a multi-user communication system using multiple walsh channels
US5754533A (en) 1995-08-23 1998-05-19 Qualcomm Incorporated Method and system for non-orthogonal noise energy based gain control
JP2924730B2 (ja) * 1995-09-13 1999-07-26 日本電気株式会社 信号受信方法
JP2723094B2 (ja) * 1995-11-07 1998-03-09 日本電気株式会社 Ｃｄｍａ受信装置
US5721754A (en) 1996-05-21 1998-02-24 Motorola, Inc. Signal quality detector and methods thereof
JPH1082809A (ja) * 1996-09-06 1998-03-31 Japan Radio Co Ltd 干渉量推定器
US5903554A (en) * 1996-09-27 1999-05-11 Qualcomm Incorporation Method and apparatus for measuring link quality in a spread spectrum communication system
FI102023B (fi) * 1996-11-26 1998-09-30 Nokia Telecommunications Oy Menetelmä kuormitustavoitteen muodostamiseksi ja radiojärjestelmä
JP3075341B2 (ja) * 1996-12-25 2000-08-14 日本電気株式会社 送受信装置
JPH10190497A (ja) * 1996-12-27 1998-07-21 Fujitsu Ltd Ｓｉｒ測定装置
US6141334A (en) * 1997-02-10 2000-10-31 Lucent Technologies, Inc. Receiver for pilot-aided code-division multiple access
JP3586348B2 (ja) * 1997-03-05 2004-11-10 富士通株式会社 信号対干渉電力比測定装置及び信号対干渉電力比測定方法並びにｃｄｍａ通信方式下での送信電力制御方法
JP3274388B2 (ja) * 1997-07-25 2002-04-15 株式会社東芝 Ｒａｋｅ受信機とこのｒａｋｅ受信機を備えたスぺクトラム拡散通信装置
US6661832B1 (en) * 1999-05-11 2003-12-09 Qualcomm Incorporated System and method for providing an accurate estimation of received signal interference for use in wireless communications systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406588A (en) * 1993-05-28 1995-04-11 Motorola, Inc. Method and apparatus for mitigating distortion effects in the determination of signal usability
EP0776105A1 (en) * 1995-06-13 1997-05-28 Ntt Mobile Communications Network Inc. Cdma demodulator
WO1998020617A1 (en) * 1996-11-06 1998-05-14 Qualcomm Incorporated Soft decision output decoder for decoding convolutionally encoded codewords
KR19990088251A (ko) * 1998-05-13 1999-12-27 윤종용 이동통신시스템의이동국채널추정장치및방법

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US20040091025A1 (en) 2004-05-13
KR20020012570A (ko) 2002-02-16
EP1783922A3 (en) 2009-07-15
EP1177640A1 (en) 2002-02-06
BR0010420A (pt) 2002-04-30
JP5198697B2 (ja) 2013-05-15
WO2000069090A1 (en) 2000-11-16
DE60034669D1 (de) 2007-06-14
DE60034669T2 (de) 2008-01-10
ATE361588T1 (de) 2007-05-15
JP2002544708A (ja) 2002-12-24
JP5738971B2 (ja) 2015-06-24
EP1177640B1 (en) 2007-05-02
EP1783922A2 (en) 2007-05-09
HK1043891A1 (en) 2002-09-27
US6661832B1 (en) 2003-12-09
CN1160872C (zh) 2004-08-04
AU4999900A (en) 2000-11-21
HK1043891B (zh) 2005-04-22
JP2014135722A (ja) 2014-07-24
TW462150B (en) 2001-11-01
CN1350724A (zh) 2002-05-22
JP2011055508A (ja) 2011-03-17
US6975671B2 (en) 2005-12-13
EP1783922B1 (en) 2013-11-20
JP5323791B2 (ja) 2013-10-23
JP2013070386A (ja) 2013-04-18

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