BR0215922A - Método para comunicar quadros de dados digitais por sinais modulados em ofdm, transmissor, e, receptor - Google Patents
Método para comunicar quadros de dados digitais por sinais modulados em ofdm, transmissor, e, receptorInfo
- Publication number
- BR0215922A BR0215922A BR0215922-8A BR0215922A BR0215922A BR 0215922 A BR0215922 A BR 0215922A BR 0215922 A BR0215922 A BR 0215922A BR 0215922 A BR0215922 A BR 0215922A
- Authority
- BR
- Brazil
- Prior art keywords
- digital data
- modulated signals
- transmitter
- receiver
- ofdm modulated
- 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
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
- H04L27/262—Reduction thereof by selection of pilot symbols
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Jellies, Jams, And Syrups (AREA)
Abstract
"MéTODO PARA COMUNICAR QUADROS DE DADOS DIGITAIS POR SINAIS MODULADOS EM OFDM, TRANSMISSOR, E RECEPTOR". Método para comunicar quadros de dados digitais por sinais modulados em OFDM , compreendendo primeiros diversos sub-canais portando carga útil e segundos diversos sub-canais portando piloto, por meio do qual quadros consecutivos de dados de carga útil são associados a uma dada configuração de piloto e transmitidos. Antes da transmissão de um quadro de dados de carga útil, cada uma das diversas configurações de piloto é avaliada com relação a PAPR, onde a configuração de piloto sendo associada ao valor de PAPR mais baixo está sendo escolhida para transmissão.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE2002/002033 WO2004043028A1 (en) | 2002-11-07 | 2002-11-07 | Papr reduction |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0215922A true BR0215922A (pt) | 2005-08-09 |
Family
ID=32310984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0215922-8A BR0215922A (pt) | 2002-11-07 | 2002-11-07 | Método para comunicar quadros de dados digitais por sinais modulados em ofdm, transmissor, e, receptor |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060034378A1 (pt) |
EP (1) | EP1563659B1 (pt) |
AT (1) | ATE429116T1 (pt) |
AU (1) | AU2002347734A1 (pt) |
BR (1) | BR0215922A (pt) |
DE (1) | DE60232026D1 (pt) |
WO (1) | WO2004043028A1 (pt) |
Families Citing this family (41)
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US10931338B2 (en) | 2001-04-26 | 2021-02-23 | Genghiscomm Holdings, LLC | Coordinated multipoint systems |
US10644916B1 (en) | 2002-05-14 | 2020-05-05 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
KR20050008429A (ko) * | 2003-07-10 | 2005-01-21 | 삼성전자주식회사 | 수신 성능을 향상시킨 디지털 방송 송/수신 시스템 및그의 신호처리방법 |
EP1542488A1 (en) * | 2003-12-12 | 2005-06-15 | Telefonaktiebolaget LM Ericsson (publ) | Method and apparatus for allocating a pilot signal adapted to the channel characteristics |
US7808940B2 (en) * | 2004-05-10 | 2010-10-05 | Alcatel-Lucent Usa Inc. | Peak-to-average power ratio control |
US11381285B1 (en) | 2004-08-02 | 2022-07-05 | Genghiscomm Holdings, LLC | Transmit pre-coding |
US7573944B2 (en) * | 2004-10-21 | 2009-08-11 | Samsung Electronics Co., Ltd | Apparatus and method for canceling inter-symbol interference in a broadband wireless communication system |
US7782810B2 (en) | 2004-12-03 | 2010-08-24 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting/receiving packet data symbol in a mobile communication system |
EP1679849B1 (en) | 2005-01-11 | 2014-02-26 | Motorola Solutions, Inc. | OFDM communication apparatus and method, wherein the pilot symbols are weighted in order to reduce the peak to average power ratio |
JP4619797B2 (ja) * | 2005-01-14 | 2011-01-26 | 富士通株式会社 | 無線通信システム及び無線通信装置 |
US7778362B2 (en) * | 2005-03-28 | 2010-08-17 | Wisair Ltd. | Method and device for OFDM channel estimation |
WO2007052397A1 (ja) * | 2005-10-31 | 2007-05-10 | Nec Corporation | 送受信システム、伝送装置、及びそれらに用いるパイロット信号多重方法 |
WO2007086131A1 (ja) * | 2006-01-27 | 2007-08-02 | Fujitsu Limited | 基地局及び無線通信システム並びにパイロットパターン決定方法 |
US7848446B2 (en) * | 2006-09-27 | 2010-12-07 | Telefonaktiebolaget L M Ericsson (Publ) | Reduction of peak-to-average-power ratio in a telecommunications system |
WO2008069488A1 (en) * | 2006-12-05 | 2008-06-12 | Electronics And Telecommunications Research Institute | Apparatus and method for reducing peak to average power ratio in orthogonal frequency division multiplexing system |
US8611530B2 (en) * | 2007-05-22 | 2013-12-17 | Harris Corporation | Encryption via induced unweighted errors |
US8406276B2 (en) | 2008-12-29 | 2013-03-26 | Harris Corporation | Communications system employing orthogonal chaotic spreading codes |
US8457077B2 (en) | 2009-03-03 | 2013-06-04 | Harris Corporation | Communications system employing orthogonal chaotic spreading codes |
US8509284B2 (en) | 2009-06-08 | 2013-08-13 | Harris Corporation | Symbol duration dithering for secured chaotic communications |
US8428102B2 (en) | 2009-06-08 | 2013-04-23 | Harris Corporation | Continuous time chaos dithering |
US8428103B2 (en) | 2009-06-10 | 2013-04-23 | Harris Corporation | Discrete time chaos dithering |
US8428104B2 (en) * | 2009-07-01 | 2013-04-23 | Harris Corporation | Permission-based multiple access communications systems |
US8406352B2 (en) | 2009-07-01 | 2013-03-26 | Harris Corporation | Symbol estimation for chaotic spread spectrum signal |
US8379689B2 (en) * | 2009-07-01 | 2013-02-19 | Harris Corporation | Anti-jam communications having selectively variable peak-to-average power ratio including a chaotic constant amplitude zero autocorrelation waveform |
US8848909B2 (en) | 2009-07-22 | 2014-09-30 | Harris Corporation | Permission-based TDMA chaotic communication systems |
US8913478B2 (en) * | 2009-11-18 | 2014-12-16 | Wi-Lan, Inc. | Methods and apparatus for interleaving in OFDM/OFDMA systems |
US8744003B2 (en) | 2012-06-20 | 2014-06-03 | MagnaCom Ltd. | Multi-mode transmitter for highly-spectrally-efficient communications |
US9118519B2 (en) | 2013-11-01 | 2015-08-25 | MagnaCom Ltd. | Reception of inter-symbol-correlated signals using symbol-by-symbol soft-output demodulator |
US9008223B1 (en) | 2013-12-24 | 2015-04-14 | Freescale Semiconductor, Inc. | Transmitter and method for reducing the peak-to-average power ratio of a digitally modulated communication signal |
WO2015126171A1 (en) * | 2014-02-18 | 2015-08-27 | Samsung Electronics Co., Ltd. | Transmitting apparatus, receiving apparatus, and controlling methods thereof |
KR102269078B1 (ko) * | 2014-02-18 | 2021-06-24 | 삼성전자주식회사 | 송신 장치, 수신 장치 및 그 제어 방법 |
US9496900B2 (en) | 2014-05-06 | 2016-11-15 | MagnaCom Ltd. | Signal acquisition in a multimode environment |
US9246523B1 (en) | 2014-08-27 | 2016-01-26 | MagnaCom Ltd. | Transmitter signal shaping |
US10225108B2 (en) * | 2015-12-08 | 2019-03-05 | Avago Technologies International Sales Pte. Limited | Channel estimation for multi-channel transmissions |
US10637705B1 (en) | 2017-05-25 | 2020-04-28 | Genghiscomm Holdings, LLC | Peak-to-average-power reduction for OFDM multiple access |
US10243773B1 (en) | 2017-06-30 | 2019-03-26 | Genghiscomm Holdings, LLC | Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM |
US11671151B2 (en) | 2017-07-25 | 2023-06-06 | Tybalt, Llc | Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM |
US10637544B1 (en) | 2018-04-24 | 2020-04-28 | Genghiscomm Holdings, LLC | Distributed radio system |
EP3808046A4 (en) | 2018-06-17 | 2022-02-23 | Genghiscomm Holdings, LLC | DISTRIBUTED RADIO SYSTEM |
WO2020242898A1 (en) | 2019-05-26 | 2020-12-03 | Genghiscomm Holdings, LLC | Non-orthogonal multiple access |
EP3826256B1 (en) | 2019-11-19 | 2023-07-12 | RivieraWaves | Digital pre-distortion method for ofdm-based communication systems |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US4970714A (en) * | 1989-01-05 | 1990-11-13 | International Business Machines Corp. | Adaptive data link protocol |
US5381449A (en) * | 1990-06-12 | 1995-01-10 | Motorola, Inc. | Peak to average power ratio reduction methodology for QAM communications systems |
US6128317A (en) * | 1997-12-22 | 2000-10-03 | Motorola, Inc. | Transmitter and receiver supporting differing speed codecs over single links |
US6065070A (en) * | 1998-03-18 | 2000-05-16 | National Semiconductor Corporation | DMA configurable channel with memory width N and with steering logic comprising N multiplexors, each multiplexor having a single one-byte input and N one-byte outputs |
US6209112B1 (en) * | 1998-07-31 | 2001-03-27 | Lucent Technologies Inc. | Apparatus and method for reducing power consumption of an error-correcting decoder |
US6952394B1 (en) * | 1999-05-25 | 2005-10-04 | Samsung Electronics Co., Ltd. | Method for transmitting and receiving orthogonal frequency division multiplexing signal and apparatus therefor |
ATE285650T1 (de) * | 1999-06-16 | 2005-01-15 | Sony Int Europe Gmbh | Optimierte synchronisierungspräambelstruktur für ofdm-system |
US6985432B1 (en) * | 2000-01-28 | 2006-01-10 | Zion Hadad | OFDM communication channel |
US7512409B1 (en) * | 2000-01-13 | 2009-03-31 | Zion Hadad Communications Ltd. | Cellular network system |
KR100401801B1 (ko) * | 2001-03-27 | 2003-10-17 | (주)텔레시스테크놀로지 | 데이터 전송 성능을 개선하기 위한 직교주파수 분할 다중통신 시스템 및 방법 |
US7318185B2 (en) * | 2001-08-23 | 2008-01-08 | Nortel Networks Limited | Method and apparatus for scrambling based peak-to-average power ratio reduction without side information |
-
2002
- 2002-11-07 EP EP02783933A patent/EP1563659B1/en not_active Expired - Lifetime
- 2002-11-07 AT AT02783933T patent/ATE429116T1/de not_active IP Right Cessation
- 2002-11-07 AU AU2002347734A patent/AU2002347734A1/en not_active Abandoned
- 2002-11-07 WO PCT/SE2002/002033 patent/WO2004043028A1/en not_active Application Discontinuation
- 2002-11-07 BR BR0215922-8A patent/BR0215922A/pt not_active IP Right Cessation
- 2002-11-07 DE DE60232026T patent/DE60232026D1/de not_active Expired - Lifetime
- 2002-11-07 US US10/531,794 patent/US20060034378A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1563659B1 (en) | 2009-04-15 |
WO2004043028A1 (en) | 2004-05-21 |
WO2004043028A8 (en) | 2005-05-19 |
US20060034378A1 (en) | 2006-02-16 |
AU2002347734A1 (en) | 2004-06-07 |
DE60232026D1 (de) | 2009-05-28 |
ATE429116T1 (de) | 2009-05-15 |
EP1563659A2 (en) | 2005-08-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 3O 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 DA RPI 2038 DE 26/01/2010 |