JP4927528B2 - チャネル推定を改善するシステム及び方法 - Google Patents
チャネル推定を改善するシステム及び方法 Download PDFInfo
- Publication number
- JP4927528B2 JP4927528B2 JP2006503655A JP2006503655A JP4927528B2 JP 4927528 B2 JP4927528 B2 JP 4927528B2 JP 2006503655 A JP2006503655 A JP 2006503655A JP 2006503655 A JP2006503655 A JP 2006503655A JP 4927528 B2 JP4927528 B2 JP 4927528B2
- Authority
- JP
- Japan
- Prior art keywords
- multipath
- elements
- channel estimates
- channel
- noise
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004891 communication Methods 0.000 claims abstract description 53
- 230000000694 effects Effects 0.000 claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims description 46
- 230000001934 delay Effects 0.000 claims description 22
- 230000000875 corresponding effect Effects 0.000 claims description 17
- 230000002596 correlated effect Effects 0.000 claims description 12
- 230000004044 response Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 24
- 230000005540 biological transmission Effects 0.000 description 17
- 238000001228 spectrum Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 230000001413 cellular effect Effects 0.000 description 3
- 238000005562 fading Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000005311 autocorrelation function Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/368,765 US7257377B2 (en) | 2003-02-18 | 2003-02-18 | Systems and methods for improving channel estimation |
| US10/368,765 | 2003-02-18 | ||
| PCT/US2004/004708 WO2004075019A2 (en) | 2003-02-18 | 2004-02-18 | Channel estimation of a receiver multipath cdma signal |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010172244A Division JP4933646B2 (ja) | 2003-02-18 | 2010-07-30 | チャネル推定を改善するシステム及び方法 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2006518168A JP2006518168A (ja) | 2006-08-03 |
| JP2006518168A5 JP2006518168A5 (enExample) | 2007-04-05 |
| JP4927528B2 true JP4927528B2 (ja) | 2012-05-09 |
Family
ID=32850196
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006503655A Expired - Fee Related JP4927528B2 (ja) | 2003-02-18 | 2004-02-18 | チャネル推定を改善するシステム及び方法 |
| JP2010172244A Expired - Fee Related JP4933646B2 (ja) | 2003-02-18 | 2010-07-30 | チャネル推定を改善するシステム及び方法 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010172244A Expired - Fee Related JP4933646B2 (ja) | 2003-02-18 | 2010-07-30 | チャネル推定を改善するシステム及び方法 |
Country Status (17)
| Country | Link |
|---|---|
| US (3) | US7257377B2 (enExample) |
| EP (2) | EP2247048B1 (enExample) |
| JP (2) | JP4927528B2 (enExample) |
| KR (2) | KR101065236B1 (enExample) |
| CN (2) | CN101867532A (enExample) |
| AT (2) | ATE532302T1 (enExample) |
| AU (2) | AU2004214506B2 (enExample) |
| BR (1) | BRPI0407566A (enExample) |
| CA (2) | CA2812965A1 (enExample) |
| DE (1) | DE602004031285D1 (enExample) |
| ES (2) | ES2373636T3 (enExample) |
| IL (1) | IL170333A (enExample) |
| MX (1) | MXPA05008761A (enExample) |
| RU (1) | RU2367103C2 (enExample) |
| TW (1) | TWI356597B (enExample) |
| UA (1) | UA89023C2 (enExample) |
| WO (1) | WO2004075019A2 (enExample) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7769078B2 (en) * | 2000-12-22 | 2010-08-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver |
| US20040161057A1 (en) * | 2003-02-18 | 2004-08-19 | Malladi Durga Prasad | Communication receiver with a rake-based adaptive equalizer |
| US7272176B2 (en) | 2003-02-18 | 2007-09-18 | Qualcomm Incorporated | Communication receiver with an adaptive equalizer |
| US7257377B2 (en) * | 2003-02-18 | 2007-08-14 | Qualcomm, Incorporated | Systems and methods for improving channel estimation |
| 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 |
| US7508863B2 (en) * | 2004-12-13 | 2009-03-24 | Alcatel-Lucent Usa Inc. | Method of processing multi-path signals |
| KR101302201B1 (ko) | 2005-12-10 | 2013-08-30 | 한국전자통신연구원 | 다중 간섭 잡음 제거 기능을 이용한 채널 추정 방법 및수신 장치 |
| US7893873B2 (en) * | 2005-12-20 | 2011-02-22 | Qualcomm Incorporated | Methods and systems for providing enhanced position location in wireless communications |
| US8300651B1 (en) * | 2008-01-30 | 2012-10-30 | Marvell International Ltd. | Channel estimation with co-channel pilots suppression |
| KR101396239B1 (ko) * | 2008-03-04 | 2014-05-19 | 삼성전자주식회사 | 무선통신시스템에서 채널 및 잡음 추정 장치 및 방법 |
| BR112012001022A2 (pt) * | 2009-07-15 | 2016-03-15 | Nortel Networks Ltd | seleção entre técnicas de estimativa de vários canais |
| KR20110018143A (ko) * | 2009-08-17 | 2011-02-23 | 삼성전자주식회사 | 이동통신 시스템에서 등화기 수신기 및 방법 |
| WO2012166961A1 (en) | 2011-06-01 | 2012-12-06 | Andrew Llc | Broadband distributed antenna system with non-duplexer isolator sub-system |
| CN103929380B (zh) * | 2013-01-10 | 2017-04-26 | 晨星软件研发(深圳)有限公司 | 无线接收系统及其频道效应估计方法 |
| WO2014163544A1 (en) * | 2013-04-05 | 2014-10-09 | Telefonaktiebolaget L M Ericsson (Publ) | Apparatus and method for jointly selecting the tap values and delays of the|fingers for a rake receiver of two carriers |
| CN103236993B (zh) * | 2013-04-17 | 2015-09-09 | 哈尔滨工业大学 | 一种基于多径延时分布的信道估计方法 |
| RU2544178C1 (ru) * | 2013-10-11 | 2015-03-10 | Открытое акционерное общество "Камчатский гидрофизический институт" (ОАО "КГФИ") | Устройство для приема дискретных сигналов, прошедших многолучевой канал связи |
| WO2015160777A1 (en) | 2014-04-15 | 2015-10-22 | Commscope Technologies Llc | Wideband remote unit for distributed antenna system |
| US9479360B2 (en) | 2014-06-27 | 2016-10-25 | Samsung Electronics Co., Ltd | Receiver apparatus and reception method in wireless communication system |
| US9712345B2 (en) | 2015-04-06 | 2017-07-18 | Samsung Electronics Co., Ltd | Communication device and method of controlling same |
| CN106788807B (zh) * | 2017-02-21 | 2020-07-28 | 北京邮电大学 | 一种无线信道测试方法及装置 |
| US10320517B2 (en) | 2017-06-05 | 2019-06-11 | J3 Technology LLC | Switched transmit antennas with no feedback for multipath reduction |
| WO2019138156A1 (en) * | 2018-01-12 | 2019-07-18 | Nokia Technologies Oy | Profiled channel impulse response for accurate multipath parameter estimation |
| US10756863B2 (en) | 2018-05-11 | 2020-08-25 | At&T Intellectual Property I, L.P. | Transmitting reference signals in 5G or other next generation communication systems |
| WO2025041958A1 (ko) * | 2023-08-20 | 2025-02-27 | 삼성전자 주식회사 | 무선 통신 시스템에서 수신 장치에 수신된 신호를 처리하는 장치 및 방법 |
Family Cites Families (113)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3805457A1 (de) | 1988-02-22 | 1989-08-31 | Thomson Brandt Gmbh | Rundfunkempfaenger fuer ein fahrzeug |
| US5101501A (en) * | 1989-11-07 | 1992-03-31 | Qualcomm Incorporated | Method and system for providing a soft handoff in communications in a cdma cellular telephone system |
| JP3135902B2 (ja) | 1990-05-11 | 2001-02-19 | 株式会社日立製作所 | 自動等化器及び半導体集積回路 |
| US5297165A (en) | 1990-07-06 | 1994-03-22 | Nippon Telegraph And Telephone Corporation | Equalizer for radio receive signal |
| JP3093243B2 (ja) | 1990-07-12 | 2000-10-03 | 株式会社東芝 | 移動無線通信システム |
| JP2541378B2 (ja) | 1990-12-27 | 1996-10-09 | 日本電気株式会社 | アダプティブ・フィルタによる未知システム近似の方法及び装置 |
| DE4108806C1 (enExample) | 1991-03-18 | 1992-01-30 | Litef Gmbh, 7800 Freiburg, De | |
| JPH04330818A (ja) | 1991-05-02 | 1992-11-18 | Nec Corp | タップ間隔混合型自動等化器 |
| JPH05207076A (ja) | 1991-11-25 | 1993-08-13 | Nec Corp | 受信機 |
| US5402496A (en) | 1992-07-13 | 1995-03-28 | Minnesota Mining And Manufacturing Company | Auditory prosthesis, noise suppression apparatus and feedback suppression apparatus having focused adaptive filtering |
| SG54201A1 (en) | 1992-09-18 | 1998-11-16 | Oki Electric Ind Co Ltd | Adaptive equalizing receiver and maximum likelihood sequence estimating receiver |
| JP2663820B2 (ja) | 1992-12-28 | 1997-10-15 | 日本電気株式会社 | 判定帰還形等化器 |
| US5572552A (en) | 1994-01-27 | 1996-11-05 | Ericsson Ge Mobile Communications Inc. | Method and system for demodulation of downlink CDMA signals |
| BR9506001A (pt) | 1994-06-03 | 1997-08-19 | Motorola Inc | Processo e aparelho para ajuste do nível de potência do assinante em sistema de comunicação celular |
| WO1996000471A1 (en) | 1994-06-23 | 1996-01-04 | Ntt Mobile Communications Network Inc. | Cdma demodulation circuit and demodulating method |
| JPH0865205A (ja) | 1994-08-24 | 1996-03-08 | Matsushita Electric Ind Co Ltd | Cdma方式移動通信装置 |
| FI102797B (fi) * | 1994-10-07 | 1999-02-15 | Nokia Mobile Phones Ltd | Signaalin ilmaisumenetelmä TDMA-matkaviestinjärjestelmän vastaanottime ssa sekä menetelmän toteuttava vastaanotin |
| ES2101639B1 (es) | 1994-10-21 | 1998-03-01 | Alcatel Standard Electrica | Ecualizador adaptativo. |
| US5734966A (en) | 1995-01-20 | 1998-03-31 | Diablo Research Corporation | Wireless communication system for adapting to frequency drift |
| IT1273963B (it) | 1995-02-24 | 1997-07-11 | Alcatel Italia | Metodo e circuiti di equalizzazione a spaziatura frazionata |
| JP2705623B2 (ja) | 1995-03-22 | 1998-01-28 | 日本電気株式会社 | ダイバーシチ送受信方法及び送受信機 |
| US5648983A (en) * | 1995-04-24 | 1997-07-15 | Lucent Technologies Inc. | CDMA rake receiver with sub-chip resolution |
| US5636244A (en) | 1995-07-26 | 1997-06-03 | Motorola, Inc. | Method and apparatus for initializing equalizer coefficents using peridioc training sequences |
| JP3636397B2 (ja) * | 1996-04-04 | 2005-04-06 | 富士通株式会社 | ジッタ抑圧回路 |
| JPH1028080A (ja) | 1996-07-12 | 1998-01-27 | Nec Corp | 低消費電力型通信用適応等化フィルタ |
| SE507154C2 (sv) | 1996-08-16 | 1998-04-06 | Ericsson Telefon Ab L M | Anordning och förfarande för estimering av symboler i ett bredbandigt radiosystem |
| US5872775A (en) * | 1996-10-30 | 1999-02-16 | Qualcomm Incorporated | Method and apparatus for performing rate determination |
| US5889827A (en) * | 1996-12-12 | 1999-03-30 | Ericsson Inc. | Method and apparatus for digital symbol detection using medium response estimates |
| CA2201834A1 (en) | 1997-04-04 | 1998-10-04 | Gennum Corporation | Serial digital data communications receiver with improved automatic cable equalizer, agc system, and dc restorer |
| US6240129B1 (en) | 1997-07-10 | 2001-05-29 | Alcatel | Method and windowing unit to reduce leakage, fourier transformer and DMT modem wherein the unit is used |
| JP3180725B2 (ja) | 1997-08-05 | 2001-06-25 | 日本電気株式会社 | 分布帰還型半導体レーザ |
| 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 |
| US6097763A (en) | 1997-10-31 | 2000-08-01 | Pairgain Technologies, Inc. | MMSE equalizers for DMT systems with cross talk |
| CA2306465A1 (en) * | 1997-11-07 | 1999-05-20 | Daiichi Pharmaceutical Co. Ltd. | Piperazine-cyclodextrin complexes |
| US6175588B1 (en) | 1997-12-30 | 2001-01-16 | Motorola, Inc. | Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system |
| JPH11205209A (ja) | 1998-01-16 | 1999-07-30 | Kokusai Electric Co Ltd | 受信装置 |
| JP3952335B2 (ja) | 1998-03-10 | 2007-08-01 | ソニー株式会社 | 受信方法及び受信装置 |
| US6731622B1 (en) * | 1998-05-01 | 2004-05-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Multipath propagation delay determining means using periodically inserted pilot symbols |
| US6744754B1 (en) * | 1998-06-09 | 2004-06-01 | Lg Information & Communications, Ltd. | Control of forward link power CDMA mobile communication system |
| US6577690B1 (en) | 1998-06-25 | 2003-06-10 | Silicon Automation Systems Limited | Clock recovery in multi-carrier transmission systems |
| JP2000092009A (ja) | 1998-07-13 | 2000-03-31 | Sony Corp | 通信方法、送信機及び受信機 |
| EP1014609B1 (en) | 1998-07-13 | 2004-09-22 | Sony Corporation | Multicarrier communication method, transmitter and receiver |
| JP2000049666A (ja) | 1998-07-31 | 2000-02-18 | Matsushita Electric Ind Co Ltd | 等化器及び等化方法 |
| US6301293B1 (en) * | 1998-08-04 | 2001-10-09 | Agere Systems Guardian Corp. | Detectors for CDMA systems |
| RU2153776C2 (ru) * | 1998-10-23 | 2000-07-27 | Корпорация "Самсунг Электроникс" | Способ приема-передачи многолучевых сигналов (варианты) и устройство приема-передачи сигналов с кодовым разделением каналов (варианты) |
| US6625197B1 (en) * | 1998-10-27 | 2003-09-23 | Qualcomm Incorporated | Method and apparatus for multipath demodulation in a code division multiple access communication system |
| US6122015A (en) | 1998-12-07 | 2000-09-19 | General Electric Company | Method and apparatus for filtering digital television signals |
| US6879577B2 (en) * | 1998-12-31 | 2005-04-12 | Lg Electronics Inc. | Method and apparatus for determining frame quality in mobile communication system |
| US6507602B1 (en) | 1999-01-07 | 2003-01-14 | Ericsson, Inc. | Smoothing receiver channel estimates using spectral estimation |
| US6470044B1 (en) | 1999-01-15 | 2002-10-22 | Sharp Laboratories Of America, Inc. | Computationally parsimonious forward link receiver for DS-CDMA systems and method for same |
| US6526093B1 (en) | 1999-03-04 | 2003-02-25 | Mitsubishi Electric Research Laboratories, Inc | Method and apparatus for equalizing a digital signal received via multiple transmission paths |
| AU3434200A (en) | 1999-03-10 | 2000-09-28 | Nokia Mobile Phones Limited | Unsupervised adaptive chip separation filter for cdma terminal |
| FI112831B (fi) | 1999-04-28 | 2004-01-15 | Nokia Corp | Menetelmä kanavaestimaatin muodostamiseksi ja vastaanotin |
| US6816541B1 (en) | 1999-05-24 | 2004-11-09 | Texas Instruments Incorporated | Spread spectrum interference cancellation |
| US6466616B1 (en) | 1999-07-02 | 2002-10-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Power efficient equalization |
| US6496706B1 (en) | 1999-07-23 | 2002-12-17 | Qualcomm Incorporated | Method and system for transmit gating in a wireless communication system |
| FR2805943B1 (fr) | 1999-09-14 | 2002-08-09 | Inst Nat Sciences Appliq | Procede d'egalisation dans des recepteurs utilisant une combinaison des techniques de modulations a porteuses multiples et a acces multiple par repartition de codes |
| KR100500810B1 (ko) | 1999-10-29 | 2005-07-12 | 마츠시타 덴끼 산교 가부시키가이샤 | 파형 등화 제어 장치 |
| JP2001177451A (ja) | 1999-12-15 | 2001-06-29 | Matsushita Electric Ind Co Ltd | データ受信装置 |
| US6810070B1 (en) | 2000-01-12 | 2004-10-26 | Ericsson Inc. | Selective multi-carrier direct sequence spread spectrum communication systems and methods |
| WO2001059940A1 (en) * | 2000-02-11 | 2001-08-16 | The Regents Of The University Of California | Method and apparatus for resolving multipath components for wireless location finding |
| US6856610B2 (en) * | 2000-02-28 | 2005-02-15 | Texas Instruments Incorporated | Wireless code division multiple access communications system with channel estimation using fingers with sub-chip spacing |
| EP1130792A1 (en) * | 2000-03-03 | 2001-09-05 | Lucent Technologies Inc. | A method and rake receiver for phasor estimation in communication systems |
| JP2001257627A (ja) | 2000-03-13 | 2001-09-21 | Kawasaki Steel Corp | 無線受信機 |
| US6314131B1 (en) | 2000-03-24 | 2001-11-06 | Cadence Design Systems, Inc. | Method and system for channel estimation using multi-slot averaged interpolation |
| JP2001339326A (ja) * | 2000-05-30 | 2001-12-07 | Texas Instr Inc <Ti> | スペクトル拡散干渉打消し |
| KR100452860B1 (ko) | 2000-06-20 | 2004-10-14 | 삼성전자주식회사 | 훈련 신호를 이용한 적응 등화기용 필터 탭 길이 조정장치 및 방법 |
| JP3723417B2 (ja) | 2000-06-29 | 2005-12-07 | 株式会社エヌ・ティ・ティ・ドコモ | 送信電力制御方法および移動通信システム |
| US7082174B1 (en) | 2000-07-24 | 2006-07-25 | Qualcomm, Incorporated | Method and apparatus for processing a modulated signal using an equalizer and a rake receiver |
| US6763061B1 (en) | 2000-07-31 | 2004-07-13 | 3Com Corporation | Frequency domain technique for narrowband noise cancellation in DMT receivers |
| US6728324B1 (en) * | 2000-07-31 | 2004-04-27 | Rf Micro Devices, Inc. | Method and apparatus for multipath signal compensation in spread-spectrum communications systems |
| US7099384B1 (en) | 2000-09-01 | 2006-08-29 | Qualcomm, Inc. | Method and apparatus for time-division power assignments in a wireless communication system |
| JP3435392B2 (ja) | 2000-09-06 | 2003-08-11 | 三菱電機株式会社 | 無線通信方法および無線通信装置 |
| US20020027952A1 (en) | 2000-09-07 | 2002-03-07 | Yoshiro Kokuryo | Method for automatic equalization for use in demodulating a digital multilevel modulation signal and automatic equalization circuit and receiver circuit using the method |
| JP2002158722A (ja) | 2000-09-07 | 2002-05-31 | Hitachi Kokusai Electric Inc | 多値ディジタル変調信号の復調における自動等化方法および同方法を用いた自動等化回路並びに受信回路 |
| US6574269B1 (en) | 2000-11-21 | 2003-06-03 | Bbnt Solutions Llc | Asymmetric orthogonal codes for wireless system receivers with multiplication-free correlators |
| RU2192709C2 (ru) | 2000-11-30 | 2002-11-10 | Гармонов Александр Васильевич | Способ приема многолучевых сигналов в системе радиосвязи с кодовым разделением каналов и устройство для его реализации |
| US7181426B2 (en) | 2000-12-14 | 2007-02-20 | International Business Machines Corporation | Method and systems for space reservation on parking lots with mechanisms for space auctioning, over-booking, reservation period extensions, and incentives |
| JP2002232397A (ja) | 2001-01-31 | 2002-08-16 | Ntt Docomo Inc | 移動通信システムにおける受信処理方法及び受信装置 |
| US7050419B2 (en) | 2001-02-23 | 2006-05-23 | Terayon Communicaion Systems, Inc. | Head end receiver for digital data delivery systems using mixed mode SCDMA and TDMA multiplexing |
| US20020191568A1 (en) | 2001-03-29 | 2002-12-19 | Koninklijke Philips Electronics N.V. | Adaptive chip equalizers for synchronous DS-CDMA systems with pilot sequences |
| US7158558B2 (en) | 2001-04-26 | 2007-01-02 | Interuniversitair Microelektronica Centrum (Imec) | Wideband multiple access telecommunication method and apparatus |
| US6628707B2 (en) | 2001-05-04 | 2003-09-30 | Radiant Networks Plc | Adaptive equalizer system for short burst modems and link hopping radio networks |
| JP3681656B2 (ja) | 2001-06-07 | 2005-08-10 | 日本無線株式会社 | トランスバーサル自動等化器 |
| US6937584B2 (en) | 2001-06-29 | 2005-08-30 | Qualcomm, Incorporated | Method and apparatus for controlling gain level of a supplemental channel in a CDMA communication system |
| JP4658403B2 (ja) | 2001-07-31 | 2011-03-23 | 株式会社日立国際電気 | 自動等化方法および自動等化装置 |
| US6956893B2 (en) | 2001-08-20 | 2005-10-18 | Motorola, Inc. | Linear minimum mean square error equalization with interference cancellation for mobile communication forward links utilizing orthogonal codes covered by long pseudorandom spreading codes |
| US6944244B2 (en) | 2001-09-18 | 2005-09-13 | Thomson Licensing S.A. | Mechanism for OFDM equalizer tap initialization using an adaptive algorithm |
| US7010316B2 (en) * | 2001-09-28 | 2006-03-07 | Qualcomm Incorporated | Method and apparatus for multi-channel reverse link outer-loop power control |
| US7116957B2 (en) * | 2001-10-22 | 2006-10-03 | Qualcomm Incorporated | Velocity responsive filtering for pilot signal reception |
| CA2415170C (en) | 2001-12-28 | 2008-07-15 | Ntt Docomo, Inc. | Receiver, transmitter, communication system, and method of communication |
| US7193983B2 (en) | 2002-01-17 | 2007-03-20 | Agency For Science, Technology And Research | Path diversity equalization CDMA downlink receiver |
| JP3733336B2 (ja) | 2002-02-26 | 2006-01-11 | 株式会社日立製作所 | 無線端末装置 |
| US7061967B2 (en) * | 2002-06-24 | 2006-06-13 | Comsys Communication & Signal Processing Ltd. | Multipath channel tap delay estimation in a CDMA spread spectrum receiver |
| US20040001539A1 (en) | 2002-06-26 | 2004-01-01 | Sankaran Sundar G. | Training using overhead data in a wireless communications network |
| US6987797B2 (en) | 2002-07-26 | 2006-01-17 | Qualcomm Incorporated | Non-parametric matched filter receiver for wireless communication systems |
| US7177348B2 (en) * | 2002-09-04 | 2007-02-13 | Yang George L | Multipath receiver of a spread spectrum communication system with dynamic matched filter and efficient signal combiner |
| US7630321B2 (en) * | 2002-09-10 | 2009-12-08 | Qualcomm Incorporated | System and method for rate assignment |
| US7161973B2 (en) * | 2002-12-17 | 2007-01-09 | Sbc Properties, L.P. | Pilot aided adaptive minimum mean square interference cancellation and detection |
| US20040151269A1 (en) | 2003-01-21 | 2004-08-05 | Jaiganesh Balakrishnan | Receiver sampling in an ultra-wideband communications system |
| US7085317B2 (en) | 2003-02-18 | 2006-08-01 | Qualcomm, Inc. | Communication receiver with an adaptive equalizer length |
| US7257377B2 (en) | 2003-02-18 | 2007-08-14 | Qualcomm, Incorporated | Systems and methods for improving channel estimation |
| US7272176B2 (en) | 2003-02-18 | 2007-09-18 | Qualcomm Incorporated | Communication receiver with an adaptive equalizer |
| US20040161057A1 (en) | 2003-02-18 | 2004-08-19 | Malladi Durga Prasad | Communication receiver with a rake-based adaptive equalizer |
| US20040203812A1 (en) | 2003-02-18 | 2004-10-14 | Malladi Durga Prasad | Communication receiver with an adaptive equalizer that uses channel estimation |
| US7356100B2 (en) * | 2003-03-03 | 2008-04-08 | Mitsubishi Electric Research Laboratories, Inc. | Estimating channel impulse response and equalizer coefficients in UWB communication systems |
| US7356074B2 (en) * | 2003-05-08 | 2008-04-08 | Rf Micro Devices, Inc. | Estimation of multipath channel with sub-chip resolution |
| US7061067B2 (en) | 2003-07-04 | 2006-06-13 | Matsushita Electric Industrial Co., Ltd. | Schottky barrier diode |
| RU2347316C2 (ru) * | 2004-03-05 | 2009-02-20 | Квэлкомм Инкорпорейтед | Управление разнесением при приеме с множеством антенн в беспроводной системе связи |
| US7403557B2 (en) * | 2004-07-27 | 2008-07-22 | Nokia Corporation | Apparatus and method for hybrid traffic and pilot signal quality determination of finger lock status of rake receiver correlators |
| US7676240B2 (en) * | 2005-02-28 | 2010-03-09 | Alcatel-Lucent Usa Inc. | Power control based on estimates of cumulative received energy |
| US7609754B2 (en) * | 2005-08-30 | 2009-10-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for received communication signal processing |
| US8102795B2 (en) * | 2007-03-09 | 2012-01-24 | Qualcomm Incorporated | Channel equalization with non-common midamble allocation in 3GPP TD-CDMA systems |
-
2003
- 2003-02-18 US US10/368,765 patent/US7257377B2/en not_active Expired - Fee Related
-
2004
- 2004-02-18 ES ES10173292T patent/ES2373636T3/es not_active Expired - Lifetime
- 2004-02-18 MX MXPA05008761A patent/MXPA05008761A/es active IP Right Grant
- 2004-02-18 UA UAA200508821A patent/UA89023C2/ru unknown
- 2004-02-18 KR KR1020057015220A patent/KR101065236B1/ko not_active Expired - Fee Related
- 2004-02-18 CA CA2812965A patent/CA2812965A1/en not_active Abandoned
- 2004-02-18 KR KR1020107026656A patent/KR101028677B1/ko not_active Expired - Fee Related
- 2004-02-18 BR BRPI0407566-8A patent/BRPI0407566A/pt not_active IP Right Cessation
- 2004-02-18 AT AT10173292T patent/ATE532302T1/de active
- 2004-02-18 CA CA002516489A patent/CA2516489A1/en not_active Abandoned
- 2004-02-18 WO PCT/US2004/004708 patent/WO2004075019A2/en not_active Ceased
- 2004-02-18 RU RU2005129118/09A patent/RU2367103C2/ru not_active IP Right Cessation
- 2004-02-18 DE DE602004031285T patent/DE602004031285D1/de not_active Expired - Lifetime
- 2004-02-18 JP JP2006503655A patent/JP4927528B2/ja not_active Expired - Fee Related
- 2004-02-18 AT AT04712340T patent/ATE497668T1/de not_active IP Right Cessation
- 2004-02-18 ES ES04712340T patent/ES2357951T3/es not_active Expired - Lifetime
- 2004-02-18 CN CN201010157018A patent/CN101867532A/zh active Pending
- 2004-02-18 AU AU2004214506A patent/AU2004214506B2/en not_active Ceased
- 2004-02-18 CN CN2004800100269A patent/CN1774896B/zh not_active Expired - Fee Related
- 2004-02-18 EP EP10173292A patent/EP2247048B1/en not_active Expired - Lifetime
- 2004-02-18 TW TW093104012A patent/TWI356597B/zh not_active IP Right Cessation
- 2004-02-18 EP EP04712340A patent/EP1595374B1/en not_active Expired - Lifetime
-
2005
- 2005-08-17 IL IL170333A patent/IL170333A/en not_active IP Right Cessation
-
2007
- 2007-05-02 US US11/743,630 patent/US8135351B2/en not_active Expired - Fee Related
-
2009
- 2009-10-14 AU AU2009225360A patent/AU2009225360B2/en not_active Expired - Fee Related
-
2010
- 2010-07-30 JP JP2010172244A patent/JP4933646B2/ja not_active Expired - Fee Related
- 2010-09-23 US US12/888,999 patent/US8615200B2/en not_active Expired - Fee Related
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4933646B2 (ja) | チャネル推定を改善するシステム及び方法 | |
| KR101061743B1 (ko) | 채널 추정을 이용하는 적응형 등화기를 구비한 통신 수신기 | |
| KR101122994B1 (ko) | 적응형 등화기를 가진 통신 수신기 | |
| EP1595339B1 (en) | Communication receiver with a rake-based adaptive equalizer | |
| CN101185249B (zh) | 码分多址无线电接收器中的联合检测器以及联合检测方法 | |
| TWI232645B (en) | Segment-wise channel equalization based data estimation | |
| JP4756134B2 (ja) | 復号化方法及び装置 | |
| JP5379791B2 (ja) | 時分割二重システムに基づくcdmaシステムにおける適応結合チャネル推定方法およびシステム | |
| HK1087266A (en) | Channel estimation of a receiver multipath cdma signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070214 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070214 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20090914 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090929 |
|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20091224 |
|
| A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20100106 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100118 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100330 |
|
| 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: 20120209 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150217 Year of fee payment: 3 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |