TWI365649B - Channel estimation with effective co-channel interference suppression - Google Patents
Channel estimation with effective co-channel interference suppressionInfo
- Publication number
- TWI365649B TWI365649B TW097111087A TW97111087A TWI365649B TW I365649 B TWI365649 B TW I365649B TW 097111087 A TW097111087 A TW 097111087A TW 97111087 A TW97111087 A TW 97111087A TW I365649 B TWI365649 B TW I365649B
- Authority
- TW
- Taiwan
- Prior art keywords
- channel
- effective
- interference suppression
- channel estimation
- estimation
- Prior art date
Links
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
- H04J11/0056—Inter-base station aspects
-
- 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
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
-
- 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
- H04L25/022—Channel estimation of frequency response
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US90839907P | 2007-03-27 | 2007-03-27 | |
US12/055,745 US8787499B2 (en) | 2007-03-27 | 2008-03-26 | Channel estimation with effective co-channel interference suppression |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200913589A TW200913589A (en) | 2009-03-16 |
TWI365649B true TWI365649B (en) | 2012-06-01 |
Family
ID=39789283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW097111087A TWI365649B (en) | 2007-03-27 | 2008-03-27 | Channel estimation with effective co-channel interference suppression |
Country Status (9)
Country | Link |
---|---|
US (1) | US8787499B2 (zh) |
EP (1) | EP2127282A2 (zh) |
JP (1) | JP5204210B2 (zh) |
KR (1) | KR101109939B1 (zh) |
BR (1) | BRPI0809099A2 (zh) |
CA (1) | CA2679829A1 (zh) |
RU (1) | RU2475981C2 (zh) |
TW (1) | TWI365649B (zh) |
WO (1) | WO2008119052A2 (zh) |
Families Citing this family (41)
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US20080159448A1 (en) * | 2006-12-29 | 2008-07-03 | Texas Instruments, Incorporated | System and method for crosstalk cancellation |
KR101466943B1 (ko) | 2008-04-04 | 2014-12-02 | 삼성전자주식회사 | 주파수 영역 등화를 위한 송신기 및 수신기 |
US8064857B2 (en) * | 2008-12-15 | 2011-11-22 | Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America | Method and apparatus for co-channel interference detection in a radio |
US20100220651A1 (en) * | 2009-03-02 | 2010-09-02 | Mediatek Inc. | Method and apparatus for broadcasting and receiving system information in OFDMA systems |
EP2264961A1 (en) | 2009-06-19 | 2010-12-22 | ST-NXP Wireless France | Process for estimating the channel from the PSS signal in a LTE communication network, and receiver for the same |
TWI474628B (zh) * | 2009-06-30 | 2015-02-21 | Hon Hai Prec Ind Co Ltd | 多載波干擾消除電路及使用其的訊號收發系統 |
US20110143672A1 (en) * | 2009-12-14 | 2011-06-16 | Qualcomm Incorporated | Method and systems for parallel channel estimation and interference cancellation |
US8559567B1 (en) * | 2010-02-05 | 2013-10-15 | Marvell International Ltd. | Channel estimation using reduced-complexity cascaded one-dimensional filtering |
US8929393B2 (en) | 2010-05-03 | 2015-01-06 | Qualcomm Incorporated | Method and apparatus for communication with shortened signal formats |
US8737499B2 (en) * | 2011-10-17 | 2014-05-27 | Qualcomm Incorporated | Advanced interference cancellation for precoded GSM edge radio access network (GERAN) |
KR102066187B1 (ko) * | 2011-11-08 | 2020-01-14 | 마벨 월드 트레이드 리미티드 | 알려진 간섭을 완화하는 방법 및 장치 |
US8644413B2 (en) | 2012-05-29 | 2014-02-04 | Magnolia Broadband Inc. | Implementing blind tuning in hybrid MIMO RF beamforming systems |
US8767862B2 (en) | 2012-05-29 | 2014-07-01 | Magnolia Broadband Inc. | Beamformer phase optimization for a multi-layer MIMO system augmented by radio distribution network |
US8649458B2 (en) | 2012-05-29 | 2014-02-11 | Magnolia Broadband Inc. | Using antenna pooling to enhance a MIMO receiver augmented by RF beamforming |
US8885757B2 (en) | 2012-05-29 | 2014-11-11 | Magnolia Broadband Inc. | Calibration of MIMO systems with radio distribution networks |
US8971452B2 (en) | 2012-05-29 | 2015-03-03 | Magnolia Broadband Inc. | Using 3G/4G baseband signals for tuning beamformers in hybrid MIMO RDN systems |
US9154204B2 (en) | 2012-06-11 | 2015-10-06 | Magnolia Broadband Inc. | Implementing transmit RDN architectures in uplink MIMO systems |
US8797969B1 (en) | 2013-02-08 | 2014-08-05 | Magnolia Broadband Inc. | Implementing multi user multiple input multiple output (MU MIMO) base station using single-user (SU) MIMO co-located base stations |
US9343808B2 (en) | 2013-02-08 | 2016-05-17 | Magnotod Llc | Multi-beam MIMO time division duplex base station using subset of radios |
US20140226740A1 (en) | 2013-02-13 | 2014-08-14 | Magnolia Broadband Inc. | Multi-beam co-channel wi-fi access point |
US8989103B2 (en) | 2013-02-13 | 2015-03-24 | Magnolia Broadband Inc. | Method and system for selective attenuation of preamble reception in co-located WI FI access points |
US9155110B2 (en) | 2013-03-27 | 2015-10-06 | Magnolia Broadband Inc. | System and method for co-located and co-channel Wi-Fi access points |
US9191991B2 (en) * | 2013-02-27 | 2015-11-17 | Blackberry Limited | Methods and apparatus for reducing the impact of RF interference based on estimation of colored noise |
JP6166086B2 (ja) * | 2013-03-28 | 2017-07-19 | 富士通株式会社 | 受信機および信号処理方法 |
US9100968B2 (en) | 2013-05-09 | 2015-08-04 | Magnolia Broadband Inc. | Method and system for digital cancellation scheme with multi-beam |
US9425882B2 (en) | 2013-06-28 | 2016-08-23 | Magnolia Broadband Inc. | Wi-Fi radio distribution network stations and method of operating Wi-Fi RDN stations |
US8995416B2 (en) * | 2013-07-10 | 2015-03-31 | Magnolia Broadband Inc. | System and method for simultaneous co-channel access of neighboring access points |
US9497781B2 (en) | 2013-08-13 | 2016-11-15 | Magnolia Broadband Inc. | System and method for co-located and co-channel Wi-Fi access points |
US9060362B2 (en) * | 2013-09-12 | 2015-06-16 | Magnolia Broadband Inc. | Method and system for accessing an occupied Wi-Fi channel by a client using a nulling scheme |
US9088898B2 (en) | 2013-09-12 | 2015-07-21 | Magnolia Broadband Inc. | System and method for cooperative scheduling for co-located access points |
US9172454B2 (en) | 2013-11-01 | 2015-10-27 | Magnolia Broadband Inc. | Method and system for calibrating a transceiver array |
US8891598B1 (en) | 2013-11-19 | 2014-11-18 | Magnolia Broadband Inc. | Transmitter and receiver calibration for obtaining the channel reciprocity for time division duplex MIMO systems |
US8942134B1 (en) | 2013-11-20 | 2015-01-27 | Magnolia Broadband Inc. | System and method for selective registration in a multi-beam system |
US8929322B1 (en) | 2013-11-20 | 2015-01-06 | Magnolia Broadband Inc. | System and method for side lobe suppression using controlled signal cancellation |
US9294177B2 (en) | 2013-11-26 | 2016-03-22 | Magnolia Broadband Inc. | System and method for transmit and receive antenna patterns calibration for time division duplex (TDD) systems |
US9014066B1 (en) | 2013-11-26 | 2015-04-21 | Magnolia Broadband Inc. | System and method for transmit and receive antenna patterns calibration for time division duplex (TDD) systems |
US9042276B1 (en) | 2013-12-05 | 2015-05-26 | Magnolia Broadband Inc. | Multiple co-located multi-user-MIMO access points |
US9172446B2 (en) | 2014-03-19 | 2015-10-27 | Magnolia Broadband Inc. | Method and system for supporting sparse explicit sounding by implicit data |
US9100154B1 (en) | 2014-03-19 | 2015-08-04 | Magnolia Broadband Inc. | Method and system for explicit AP-to-AP sounding in an 802.11 network |
US9271176B2 (en) | 2014-03-28 | 2016-02-23 | Magnolia Broadband Inc. | System and method for backhaul based sounding feedback |
TWI575901B (zh) * | 2015-06-17 | 2017-03-21 | 晨星半導體股份有限公司 | 通道效應消除裝置及通道效應消除方法 |
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FR2671923B1 (fr) | 1991-01-17 | 1993-04-16 | France Etat | Dispositif de demodulation coherente de donnees numeriques entrelacees en temps et en frequence, a estimation de la reponse frequentielle du canal de transmission et seuillage, et emetteur correspondant. |
US6654429B1 (en) * | 1998-12-31 | 2003-11-25 | At&T Corp. | Pilot-aided channel estimation for OFDM in wireless systems |
US6765969B1 (en) * | 1999-09-01 | 2004-07-20 | Motorola, Inc. | Method and device for multi-user channel estimation |
US6362781B1 (en) * | 2000-06-30 | 2002-03-26 | Motorola, Inc. | Method and device for adaptive antenna combining weights |
US6804223B2 (en) * | 2000-11-30 | 2004-10-12 | Ipr Licensing, Inc. | Reverse link pilot integrated with block codes |
US7145959B2 (en) * | 2001-04-25 | 2006-12-05 | Magnolia Broadband Inc. | Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations |
FR2827098B1 (fr) * | 2001-07-05 | 2003-12-05 | Nortel Networks Ltd | Procede de controle de ressources radio affectees a une communication entre un terminal mobile et une infrastructure cellulaire a etalement de spectre, et equipements pour la mise en oeuvre du procede |
RU2351071C2 (ru) * | 2002-10-25 | 2009-03-27 | Квэлкомм Инкорпорейтед | Оценка канала и пространственная обработка для tdd mimo систем |
US7151809B2 (en) * | 2002-10-25 | 2006-12-19 | Qualcomm, Incorporated | Channel estimation and spatial processing for TDD MIMO systems |
JP4470377B2 (ja) * | 2003-02-28 | 2010-06-02 | 株式会社日立製作所 | 移動通信システムにおける伝搬路推定方法 |
EP1521413A3 (en) * | 2003-10-01 | 2009-09-30 | Panasonic Corporation | Multicarrier reception with channel estimation and equalisation |
JP4555652B2 (ja) | 2003-10-01 | 2010-10-06 | パナソニック株式会社 | Ofdm信号受信装置及びofdm信号受信方法 |
US7551545B2 (en) * | 2004-02-09 | 2009-06-23 | Qualcomm Incorporated | Subband-based demodulation for an OFDM-based communication system |
CN100359959C (zh) * | 2004-06-01 | 2008-01-02 | 华为技术有限公司 | 一种在正交多路频分复用系统中实现信道估计的方法 |
JP4396423B2 (ja) * | 2004-07-05 | 2010-01-13 | パナソニック株式会社 | Ofdm受信装置 |
US7672383B2 (en) * | 2004-09-17 | 2010-03-02 | Qualcomm Incorporated | Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling |
JP5024934B2 (ja) | 2005-01-17 | 2012-09-12 | シャープ株式会社 | 無線通信装置 |
KR100966069B1 (ko) | 2005-03-01 | 2010-06-28 | 퀄컴 인코포레이티드 | 다중 송신 모드용 채널 추정 최적화 |
US20060198454A1 (en) * | 2005-03-02 | 2006-09-07 | Qualcomm Incorporated | Adaptive channel estimation thresholds in a layered modulation system |
KR100865469B1 (ko) * | 2005-03-08 | 2008-10-27 | 삼성전자주식회사 | 공간 분할 다중 접속 방식을 지원하는 직교주파수 다중 분할 방식 시스템에서 채널 추정 장치 및 방법 |
US8730877B2 (en) | 2005-06-16 | 2014-05-20 | Qualcomm Incorporated | Pilot and data transmission in a quasi-orthogonal single-carrier frequency division multiple access system |
IL169417A (en) * | 2005-06-27 | 2011-05-31 | Alvarion Ltd | Method and apparatus for improving signal reception in wireless networks subjected to interference caused by transmissions in neighboring cells |
US8229008B2 (en) | 2005-07-26 | 2012-07-24 | Nvidia Corporation | Interference mitigation for orthogonal frequency division multiplexing communication |
-
2008
- 2008-03-26 US US12/055,745 patent/US8787499B2/en not_active Expired - Fee Related
- 2008-03-27 TW TW097111087A patent/TWI365649B/zh not_active IP Right Cessation
- 2008-03-27 EP EP08732961A patent/EP2127282A2/en not_active Withdrawn
- 2008-03-27 JP JP2010501226A patent/JP5204210B2/ja not_active Expired - Fee Related
- 2008-03-27 BR BRPI0809099-8A patent/BRPI0809099A2/pt not_active IP Right Cessation
- 2008-03-27 KR KR1020097022452A patent/KR101109939B1/ko not_active IP Right Cessation
- 2008-03-27 WO PCT/US2008/058509 patent/WO2008119052A2/en active Application Filing
- 2008-03-27 RU RU2009139654/07A patent/RU2475981C2/ru not_active IP Right Cessation
- 2008-03-27 CA CA002679829A patent/CA2679829A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP2127282A2 (en) | 2009-12-02 |
WO2008119052A2 (en) | 2008-10-02 |
US20080240314A1 (en) | 2008-10-02 |
BRPI0809099A2 (pt) | 2014-09-09 |
KR101109939B1 (ko) | 2012-02-15 |
KR20090125208A (ko) | 2009-12-03 |
JP2010523065A (ja) | 2010-07-08 |
US8787499B2 (en) | 2014-07-22 |
CA2679829A1 (en) | 2008-10-02 |
TW200913589A (en) | 2009-03-16 |
JP5204210B2 (ja) | 2013-06-05 |
RU2009139654A (ru) | 2011-05-10 |
RU2475981C2 (ru) | 2013-02-20 |
WO2008119052A3 (en) | 2009-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |