BR0116591A - Método para supressão de interferência para transmissão tdma e/ou fdma - Google Patents
Método para supressão de interferência para transmissão tdma e/ou fdmaInfo
- Publication number
- BR0116591A BR0116591A BR0116591-7A BR0116591A BR0116591A BR 0116591 A BR0116591 A BR 0116591A BR 0116591 A BR0116591 A BR 0116591A BR 0116591 A BR0116591 A BR 0116591A
- Authority
- BR
- Brazil
- Prior art keywords
- projections
- projection
- feeding
- detection device
- output signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/22—Arrangements affording multiple use of the transmission path using time-division multiplexing
- H04L5/26—Arrangements affording multiple use of the transmission path using time-division multiplexing combined with the use of different frequencies
-
- 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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03993—Noise whitening
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
- H04L2025/03439—Fixed structures
- H04L2025/03445—Time domain
- H04L2025/03471—Tapped delay lines
- H04L2025/03484—Tapped delay lines time-recursive
- H04L2025/0349—Tapped delay lines time-recursive as a feedback filter
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Radio Transmission System (AREA)
- Noise Elimination (AREA)
- Radio Relay Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
"MéTODO PARA SUPRESSãO DE INTERFERêNCIA PARA TRANSMISSãO TDMA E/OU FDMA". A presente invenção refere-se a métodos de equalização para a transmissão digital, tais como por exemplo os métodos baseada em treliça, usualmente presumem os distúrbios por ruído Gaussiano branco. Na comunicação móvel ou na transmissão de par de fios existe freq³entemente um distúrbio adicional por interferência, o qual precisa ser levado em conta para o projeto do receptor de modo a evitar a degradação. Uma possibilidade é suprimir a interferência por pré-filtragem. Após este pré-processamento o distúrbio se assemelha ao ruído branco com pequena variância e subseq³entemente uma equalização baseada em treliça pode ser executada. Para a pré-filtragem uma nova estrutura a qual está modificada se comparada com a técnica anterior, é proposta, na qual diretamente após a pré-filtragem de valor complexo as projeções por sobre vetores complexos são executadas. Por meio disto, é assumido que uma modulação de amplitude de pulso com seq³ências de dados de valores reais é utilizada e que as respostas do impulso de canal são suficientemente diferentes. O método proposto é aplicável tanto para uma diversidade de antenas quanto para uma mono recepção; uma amostragem pode ser executada na freq³ência de símbolo ou fracionadamente espaçada. Pode ser mostrado que a estrutura proposta consegue uma supressão de interferência particularmente boa. Para a pré-filtragem na estrutura proposta os filtros de alimentação direta de uma DFE com um filtro de retorno de valor real são particularmente bem adequados. O ajuste destes filtros pode ser executado por exemplo com o algoritmo de LMS. Por meio disto, as projeções após a filtragem de alimentação direta também precisam ser levadas em conta para a otimização do filtro. Acima de tudo, com a estrutura proposta em combinação com a equalização subseq³ente um desempenho mais alto (uma taxa de erro mais baixa ou uma razão tolerável de sinal para interferência mais baixa) pode ser conseguido em relação à proposta convencional.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00128664 | 2000-12-28 | ||
EP01123779A EP1221780B1 (de) | 2000-12-28 | 2001-10-04 | Verfahren und System zur Interferenzunterdrückung für TDMA- und/oder FDMA-Übertragung |
PCT/EP2001/015019 WO2002054660A1 (de) | 2000-12-28 | 2001-12-19 | Verfahren zur interferenzunterdrückung für tdma- und/oder fdma-übertragung |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0116591A true BR0116591A (pt) | 2003-12-23 |
Family
ID=26071699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0116591-7A BR0116591A (pt) | 2000-12-28 | 2001-12-19 | Método para supressão de interferência para transmissão tdma e/ou fdma |
Country Status (13)
Country | Link |
---|---|
US (1) | US7215726B2 (pt) |
EP (2) | EP1221780B1 (pt) |
JP (1) | JP4021324B2 (pt) |
KR (1) | KR100852012B1 (pt) |
CN (1) | CN1284322C (pt) |
AT (2) | ATE250830T1 (pt) |
AU (1) | AU2002240852B2 (pt) |
BR (1) | BR0116591A (pt) |
DE (2) | DE50106151D1 (pt) |
ES (1) | ES2206374T3 (pt) |
HK (1) | HK1049747B (pt) |
RU (1) | RU2285347C2 (pt) |
WO (1) | WO2002054660A1 (pt) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
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US7340016B2 (en) | 2001-05-11 | 2008-03-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Equalizers for multi-branch receiver |
US7133477B2 (en) * | 2002-01-02 | 2006-11-07 | Intel Corporation | Robust low complexity multi-antenna adaptive minimum mean square error equalizer |
DE10233835A1 (de) * | 2002-07-25 | 2004-02-12 | Robert Bosch Gmbh | Verfahren zur Störbefreiung von Messsignalen |
DE10239810A1 (de) * | 2002-08-29 | 2004-03-11 | Siemens Ag | Verfahren und Sendeeinrichtung zum Übertragen von Daten in einem Mehrträgersystem |
US7187736B2 (en) * | 2003-02-13 | 2007-03-06 | Motorola Inc. | Reducing interference in a GSM communication system |
US7496164B1 (en) * | 2003-05-02 | 2009-02-24 | At&T Mobility Ii Llc | Systems and methods for interference cancellation in a radio receiver system |
US20050036575A1 (en) * | 2003-08-15 | 2005-02-17 | Nokia Corporation | Method and apparatus providing low complexity equalization and interference suppression for SAIC GSM/EDGE receiver |
US7450924B1 (en) * | 2004-03-25 | 2008-11-11 | At&T Mobility Ii Llc | Interference cancellation and receive diversity for single-valued modulation receivers |
CN1934838B (zh) | 2004-03-25 | 2011-09-07 | 棕榈公司 | 用于在蜂窝tdma通信系统中消除冲突的方法和通信装置 |
US7830975B2 (en) * | 2004-04-12 | 2010-11-09 | Nokia Corporation | I/Q MIMO detection for single antenna interference cancellation |
FR2873877B1 (fr) * | 2004-08-02 | 2006-12-01 | Wavecom Sa | Procede de conception d'un filtre de reception numerique et dispositif de reception correspondant |
KR20060012825A (ko) * | 2004-08-04 | 2006-02-09 | 삼성전자주식회사 | 다중입출력 시스템의 수신기 |
DE102004059983B4 (de) * | 2004-12-13 | 2009-05-07 | Infineon Technologies Ag | Unterdrückung einer Gleichkanal-Interferenz-Störung mittels einer digitalen Störfilteranordnung |
DE602005007372D1 (de) * | 2005-12-22 | 2008-07-17 | Alcatel Lucent | OFDM Kodierung unter Verwendung von Hermite-Polynomen |
US8036325B2 (en) * | 2006-03-09 | 2011-10-11 | Interdigital Technology Corporation | Wireless communication method and apparatus for performing knowledge-based and blind interference cancellation |
US8031794B2 (en) * | 2006-05-09 | 2011-10-04 | At&T Mobility Ii Llc | Systems and methods for interference cancellation in a multiple antenna radio receiver system |
EP1892908A1 (en) * | 2006-08-24 | 2008-02-27 | TTPCOM Limited | Interference cancellation receiver and method |
US7961782B2 (en) | 2007-06-04 | 2011-06-14 | Infineon Technologies Ag | Interference suppression processing unit and a method of suppressing interference in wireless data communication |
US7848460B2 (en) | 2007-07-12 | 2010-12-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Interference suppression method and apparatus |
US20090296803A1 (en) * | 2008-06-03 | 2009-12-03 | Mediatek Inc. | Block-based equalizer and method thereof |
US8265205B2 (en) * | 2008-06-04 | 2012-09-11 | Mediatek Inc. | Receiver architecture |
US20090304122A1 (en) * | 2008-06-04 | 2009-12-10 | Navid Fatemi-Ghomi | Receiver architecture |
US20110182338A1 (en) * | 2008-07-07 | 2011-07-28 | Junqiang Li | Co-channel interference and adjacent channel interference detection and suppression |
CN101667845B (zh) * | 2008-09-05 | 2013-03-20 | 中兴通讯股份有限公司 | 多路信号自适应合并方法及装置 |
US8320478B2 (en) * | 2008-12-19 | 2012-11-27 | Entropic Communications, Inc. | System and method for generating a signal with a random low peak to average power ratio waveform for an orthogonal frequency division multiplexing system |
CN101827045B (zh) * | 2010-04-26 | 2013-06-05 | 华为技术有限公司 | 接收信号处理方法和接收机 |
CN102780540B (zh) * | 2012-06-26 | 2015-01-07 | 华为技术有限公司 | 擦除译码方法、装置和接收机 |
RU2573270C2 (ru) * | 2014-06-03 | 2016-01-20 | Открытое акционерное общество "Российский институт мощного радиостроения" | Способ адаптивной коррекции с компенсацией защитных интервалов |
US10057094B2 (en) * | 2016-05-10 | 2018-08-21 | Samsung Electronics Co., Ltd | Apparatus and method for single antenna interference cancellation (SAIC) enhancement |
US11438197B2 (en) * | 2020-11-12 | 2022-09-06 | Texas Instruments Incorporated | Adaptive equalizer with a real feedforward filter and a single complex feedforward tap |
CN113641342A (zh) * | 2021-08-23 | 2021-11-12 | 苏州赛科智慧能源有限公司 | 一种基于jersey框架的数据传输方法 |
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JP2570967B2 (ja) | 1993-07-08 | 1997-01-16 | 日本電気株式会社 | Cdma受信機 |
US5414728A (en) * | 1993-11-01 | 1995-05-09 | Qualcomm Incorporated | Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels |
JP2605615B2 (ja) | 1993-12-30 | 1997-04-30 | 日本電気株式会社 | スペクトラム拡散受信機 |
US5619503A (en) * | 1994-01-11 | 1997-04-08 | Ericsson Inc. | Cellular/satellite communications system with improved frequency re-use |
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US6697633B1 (en) * | 1995-06-02 | 2004-02-24 | Northrop Grummar Corporation | Method permitting increased frequency re-use in a communication network, by recovery of transmitted information from multiple cochannel signals |
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DK0846378T3 (da) * | 1995-08-22 | 2000-04-17 | Thomson Csf | Fremgangsmåde og indretning til rumlig multipleksning og demultipleksning af radioelektriske signaler i et SDMA mobilradios |
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US6686879B2 (en) * | 1998-02-12 | 2004-02-03 | Genghiscomm, Llc | Method and apparatus for transmitting and receiving signals having a carrier interferometry architecture |
IL123782A (en) * | 1998-03-22 | 2001-05-20 | Eci Telecom Ltd | Signal Equality |
AT407933B (de) * | 1998-06-09 | 2001-07-25 | Juha Dipl Ing Laurila | Verfahren zur trennung und zur detektion von gleichkanal-signalen |
US6606129B1 (en) * | 1998-12-04 | 2003-08-12 | Samsung Electronics Co., Ltd. | Digital filtering of DTV I-F signal to avoid low-end boost of the baseband signal resulting from in-phase synchrodyne |
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US6934341B2 (en) * | 2000-08-29 | 2005-08-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for plurality signal generation |
US6745050B1 (en) * | 2000-10-23 | 2004-06-01 | Massachusetts Institute Of Technology | Multichannel multiuser detection |
US7061970B2 (en) * | 2000-11-14 | 2006-06-13 | Irving Reed | Self-synchronizing adaptive multistage receiver for wireless communication systems |
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-
2001
- 2001-10-04 ES ES01123779T patent/ES2206374T3/es not_active Expired - Lifetime
- 2001-10-04 DE DE50106151T patent/DE50106151D1/de not_active Expired - Lifetime
- 2001-10-04 EP EP01123779A patent/EP1221780B1/de not_active Expired - Lifetime
- 2001-10-04 EP EP03019288A patent/EP1367759B1/de not_active Expired - Lifetime
- 2001-10-04 DE DE50100673T patent/DE50100673D1/de not_active Expired - Lifetime
- 2001-10-04 AT AT01123779T patent/ATE250830T1/de not_active IP Right Cessation
- 2001-10-04 AT AT03019288T patent/ATE295029T1/de not_active IP Right Cessation
- 2001-12-19 KR KR1020037008696A patent/KR100852012B1/ko not_active IP Right Cessation
- 2001-12-19 US US10/027,657 patent/US7215726B2/en not_active Expired - Fee Related
- 2001-12-19 CN CNB018214754A patent/CN1284322C/zh not_active Expired - Fee Related
- 2001-12-19 JP JP2002555028A patent/JP4021324B2/ja not_active Expired - Fee Related
- 2001-12-19 AU AU2002240852A patent/AU2002240852B2/en not_active Ceased
- 2001-12-19 WO PCT/EP2001/015019 patent/WO2002054660A1/de active IP Right Grant
- 2001-12-19 RU RU2003123123/09A patent/RU2285347C2/ru not_active IP Right Cessation
- 2001-12-19 BR BR0116591-7A patent/BR0116591A/pt not_active IP Right Cessation
-
2003
- 2003-01-09 HK HK03100245.0A patent/HK1049747B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1593029A (zh) | 2005-03-09 |
KR20030070083A (ko) | 2003-08-27 |
HK1049747B (zh) | 2004-07-23 |
HK1049747A1 (en) | 2003-05-23 |
EP1221780A1 (de) | 2002-07-10 |
EP1367759B1 (de) | 2005-05-04 |
RU2003123123A (ru) | 2005-01-27 |
WO2002054660B1 (de) | 2002-09-19 |
JP4021324B2 (ja) | 2007-12-12 |
AU2002240852B2 (en) | 2005-09-15 |
DE50100673D1 (de) | 2003-10-30 |
EP1367759A1 (de) | 2003-12-03 |
ES2206374T3 (es) | 2004-05-16 |
JP2004523154A (ja) | 2004-07-29 |
RU2285347C2 (ru) | 2006-10-10 |
ATE295029T1 (de) | 2005-05-15 |
US7215726B2 (en) | 2007-05-08 |
WO2002054660A1 (de) | 2002-07-11 |
CN1284322C (zh) | 2006-11-08 |
EP1221780B1 (de) | 2003-09-24 |
DE50106151D1 (de) | 2005-06-09 |
KR100852012B1 (ko) | 2008-08-12 |
ATE250830T1 (de) | 2003-10-15 |
US20020141437A1 (en) | 2002-10-03 |
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Legal Events
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B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 12A ANUIDADE. |
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B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2258 DE 15/04/2014. |