BRPI0507282A - método e transmissor para reduzir relação de potência de pico para média em um sinal de ofdm - Google Patents
método e transmissor para reduzir relação de potência de pico para média em um sinal de ofdmInfo
- Publication number
- BRPI0507282A BRPI0507282A BRPI0507282-4A BRPI0507282A BRPI0507282A BR PI0507282 A BRPI0507282 A BR PI0507282A BR PI0507282 A BRPI0507282 A BR PI0507282A BR PI0507282 A BRPI0507282 A BR PI0507282A
- Authority
- BR
- Brazil
- Prior art keywords
- transmitter
- modulated signal
- symbol vectors
- average power
- power ratio
- 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
- H04L27/2623—Reduction thereof by clipping
-
- 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
- H04L27/2623—Reduction thereof by clipping
- H04L27/2624—Reduction thereof by clipping by soft clipping
-
- 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
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/26265—Arrangements for sidelobes suppression specially adapted to multicarrier systems, e.g. spectral precoding
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- 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
- H04L27/2626—Arrangements specific to the transmitter only
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Transmitters (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
MéTODO E TRANSMISSOR PARA REDUZIR RELAçãO DE POTêNCIA DE PICO PARA MéDIA EM UM SINAL DE OFDM Um método para reduzir relação de potência de pico para média em um sinal de OFDM inclui as etapas de modular um conjunto de sub-portadoras com um conjunto de vetores de símbolo de dados para produzir um primeiro sinal modulado, limitar a magnitude do primeiro sinal modulado para prodzir um primeiro sinal modulado limitado, desmodular o primeiro sinal modulado limitado para recuperar vetores de símbolo de entrada distorcidos, constranger os vetores de símbolo de entrada distorcidos a valores maiores do que ou iguais a um valor de limiar mínimo para produzir vetores de símbolo de dados constrangidos, constranger componentes espectrais fora de banda para se acharem dentro de uma máscara predeterminada, e re-modular os vetores de símbolo de dados constragidos. Um transmissor que executa o método também é incluído.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/770,314 | 2004-02-02 | ||
US10/770,314 US7542517B2 (en) | 2004-02-02 | 2004-02-02 | Peak-to-average power reduction for FM OFDM transmission |
PCT/US2005/000925 WO2005076560A1 (en) | 2004-02-02 | 2005-01-12 | Peak-to-average power reduction for fm ofdm transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
BRPI0507282A true BRPI0507282A (pt) | 2007-07-03 |
BRPI0507282B1 BRPI0507282B1 (pt) | 2018-06-19 |
Family
ID=34808302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0507282-4A BRPI0507282B1 (pt) | 2004-02-02 | 2005-01-12 | Método e transmissor para reduzir relação de potência de pico para média em um sinal de ofdm |
Country Status (18)
Country | Link |
---|---|
US (1) | US7542517B2 (pt) |
EP (1) | EP1712051B9 (pt) |
JP (1) | JP4744452B2 (pt) |
KR (1) | KR101123460B1 (pt) |
CN (1) | CN1914871B (pt) |
AR (1) | AR047381A1 (pt) |
AT (1) | ATE377317T1 (pt) |
AU (1) | AU2005211103B2 (pt) |
BR (1) | BRPI0507282B1 (pt) |
CA (1) | CA2553192C (pt) |
DE (1) | DE602005003103T2 (pt) |
HK (1) | HK1103938A1 (pt) |
MX (1) | MXPA06008630A (pt) |
NZ (1) | NZ549447A (pt) |
PL (1) | PL1712051T3 (pt) |
RU (1) | RU2359409C2 (pt) |
TW (1) | TWI349446B (pt) |
WO (1) | WO2005076560A1 (pt) |
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FR2846813B1 (fr) * | 2002-11-05 | 2005-01-28 | Eads Defence & Security Ntwk | Procede et dispositif d'apprentissage d'un dispositif de linearisation d'un amplificateur rf, et terminal mobile incorporant un tel dispositif |
US20050201180A1 (en) * | 2004-03-05 | 2005-09-15 | Qualcomm Incorporated | System and methods for back-off and clipping control in wireless communication systems |
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US20060039498A1 (en) * | 2004-08-19 | 2006-02-23 | De Figueiredo Rui J P | Pre-distorter for orthogonal frequency division multiplexing systems and method of operating the same |
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US8135088B2 (en) | 2005-03-07 | 2012-03-13 | Q1UALCOMM Incorporated | Pilot transmission and channel estimation for a communication system utilizing frequency division multiplexing |
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-
2004
- 2004-02-02 US US10/770,314 patent/US7542517B2/en active Active
- 2004-12-22 TW TW093140155A patent/TWI349446B/zh not_active IP Right Cessation
-
2005
- 2005-01-12 CN CN2005800038690A patent/CN1914871B/zh active Active
- 2005-01-12 BR BRPI0507282-4A patent/BRPI0507282B1/pt active IP Right Grant
- 2005-01-12 WO PCT/US2005/000925 patent/WO2005076560A1/en active IP Right Grant
- 2005-01-12 EP EP05705538A patent/EP1712051B9/en active Active
- 2005-01-12 CA CA2553192A patent/CA2553192C/en active Active
- 2005-01-12 DE DE602005003103T patent/DE602005003103T2/de active Active
- 2005-01-12 AR ARP050100098A patent/AR047381A1/es active IP Right Grant
- 2005-01-12 RU RU2006131602/09A patent/RU2359409C2/ru not_active IP Right Cessation
- 2005-01-12 AU AU2005211103A patent/AU2005211103B2/en not_active Ceased
- 2005-01-12 AT AT05705538T patent/ATE377317T1/de not_active IP Right Cessation
- 2005-01-12 MX MXPA06008630A patent/MXPA06008630A/es active IP Right Grant
- 2005-01-12 JP JP2006551149A patent/JP4744452B2/ja active Active
- 2005-01-12 NZ NZ549447A patent/NZ549447A/en not_active IP Right Cessation
- 2005-01-12 PL PL05705538T patent/PL1712051T3/pl unknown
- 2005-01-12 KR KR1020067015599A patent/KR101123460B1/ko active IP Right Grant
-
2007
- 2007-07-27 HK HK07108195.9A patent/HK1103938A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
PL1712051T3 (pl) | 2008-03-31 |
TW200537822A (en) | 2005-11-16 |
EP1712051A1 (en) | 2006-10-18 |
ATE377317T1 (de) | 2007-11-15 |
EP1712051B9 (en) | 2010-02-03 |
AR047381A1 (es) | 2006-01-18 |
AU2005211103B2 (en) | 2009-09-17 |
TWI349446B (en) | 2011-09-21 |
RU2006131602A (ru) | 2008-03-10 |
HK1103938A1 (en) | 2007-12-28 |
CA2553192C (en) | 2013-11-26 |
WO2005076560A1 (en) | 2005-08-18 |
DE602005003103T2 (de) | 2008-08-14 |
AU2005211103A1 (en) | 2005-08-18 |
RU2359409C2 (ru) | 2009-06-20 |
CN1914871B (zh) | 2012-06-27 |
MXPA06008630A (es) | 2006-09-04 |
KR101123460B1 (ko) | 2012-03-26 |
NZ549447A (en) | 2008-05-30 |
US20050169411A1 (en) | 2005-08-04 |
JP4744452B2 (ja) | 2011-08-10 |
EP1712051B1 (en) | 2007-10-31 |
KR20060130160A (ko) | 2006-12-18 |
BRPI0507282B1 (pt) | 2018-06-19 |
DE602005003103D1 (de) | 2007-12-13 |
JP2007520160A (ja) | 2007-07-19 |
CN1914871A (zh) | 2007-02-14 |
CA2553192A1 (en) | 2005-08-18 |
US7542517B2 (en) | 2009-06-02 |
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