BRPI0513984A - dispositivo de comunicação de rádio e método de comunicação de rádio - Google Patents
dispositivo de comunicação de rádio e método de comunicação de rádioInfo
- Publication number
- BRPI0513984A BRPI0513984A BRPI0513984-8A BRPI0513984A BRPI0513984A BR PI0513984 A BRPI0513984 A BR PI0513984A BR PI0513984 A BRPI0513984 A BR PI0513984A BR PI0513984 A BRPI0513984 A BR PI0513984A
- Authority
- BR
- Brazil
- Prior art keywords
- radio communication
- frequency components
- communication device
- unit
- weighting
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
- H04B17/327—Received signal code power [RSCP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
-
- 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
- H04B7/12—Frequency diversity
-
- 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
- H04L27/2602—Signal structure
-
- 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
-
- 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
- H04L27/2627—Modulators
- H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
- H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
- H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
- H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
Abstract
DISPOSITIVO DE COMUNICAçãO DE RáDIO E MéTODO DE COMUNICAçãO DE RáDIO. A presente invenção refere-se ao dispositivo de comunicação de rádio capaz de suavizar a influência de um desvanecimento seletivo de freqüência na transmissão de faixa larga de um portador único, para assim impedir a deterioração das características de taxa de erro. Neste dispositivo, uma unidade FFT (13) submete um sinal modulado introduzido de uma unidade de modulação (12) a uma transformação Fourier. Uma unidade de inserção piloto (14) insere um símbolo piloto em uma pluralidade de componentes de freqüência individuais (1-N) do sinal modulado. As unidades de multiplicação de ponderação (15-1, 15-2) multiplicam os componentes de freqüência individuais (1-N) e os símbolos pilotos inseridos nos componentes de freqüência individuais (1-N) pelos coeficientes de ponderação (W11-W1N, W21-W2N) ajustados em uma unidade de ajuste de coeficiente de ponderação (54). As unidades IFFT (16-1, 16-2) submetem os componentes de freqüência (1-N) a uma transformação Fourier inversa, convertendo assim os componentes de freqüência (1-N) em domínios de tempo.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004224657 | 2004-07-30 | ||
PCT/JP2005/012843 WO2006011360A1 (ja) | 2004-07-30 | 2005-07-12 | 無線通信装置および無線通信方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
BRPI0513984A true BRPI0513984A (pt) | 2008-05-20 |
Family
ID=35786111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0513984-8A BRPI0513984A (pt) | 2004-07-30 | 2005-07-12 | dispositivo de comunicação de rádio e método de comunicação de rádio |
Country Status (7)
Country | Link |
---|---|
US (4) | US7869760B2 (pt) |
EP (1) | EP1760978A4 (pt) |
JP (1) | JP4592698B2 (pt) |
KR (1) | KR20070046832A (pt) |
CN (1) | CN1969521A (pt) |
BR (1) | BRPI0513984A (pt) |
WO (1) | WO2006011360A1 (pt) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8484272B2 (en) * | 2004-08-20 | 2013-07-09 | Qualcomm Incorporated | Unified pulse shaping for multi-carrier and single-carrier waveforms |
CN101371547B (zh) * | 2006-01-18 | 2013-10-30 | 意法爱立信有限公司 | 一种用于操作通信系统的方法和接收站 |
CN101110803B (zh) * | 2006-07-18 | 2011-06-01 | 大唐移动通信设备有限公司 | 一种基于快速傅立叶变换和反变换联合运算的实现方法 |
JP2008206045A (ja) * | 2007-02-22 | 2008-09-04 | Nippon Telegr & Teleph Corp <Ntt> | 無線通信システム及び無線機 |
RU2420886C1 (ru) | 2007-03-02 | 2011-06-10 | Квэлкомм Инкорпорейтед | Конфигурирование повторителя |
JP4871813B2 (ja) * | 2007-08-28 | 2012-02-08 | 株式会社日立製作所 | 無線通信装置、無線通信方法及びピーク抑圧方法 |
JP5046160B2 (ja) * | 2007-10-24 | 2012-10-10 | 日本電信電話株式会社 | 無線通信システム、無線通信システムの周波数および帯域可変方法、送信装置、受信装置 |
GB2466070B (en) * | 2008-12-12 | 2014-04-30 | Nokia Corp | An apparatus |
JP5196404B2 (ja) * | 2009-04-17 | 2013-05-15 | 日本電信電話株式会社 | ディジタル無線通信装置 |
JP5476552B2 (ja) * | 2010-06-08 | 2014-04-23 | 日本電信電話株式会社 | ピーク送信電力制限方法、及び無線通信システム |
JP5627817B2 (ja) * | 2012-03-01 | 2014-11-19 | 三菱電機株式会社 | 受信装置及び受信方法 |
CN104396204A (zh) * | 2012-06-29 | 2015-03-04 | 瑞典爱立信有限公司 | Tdd信号的基带处理 |
CN104753834B (zh) * | 2013-12-27 | 2018-04-17 | 电信科学技术研究院 | 一种信道估计方法和装置 |
CN105917623B (zh) * | 2014-01-08 | 2019-08-09 | Lg电子株式会社 | 发送广播信号的装置、接收广播信号的装置、发送广播信号的方法以及接收广播信号的方法 |
US9100339B1 (en) * | 2014-03-27 | 2015-08-04 | Cable Television Laboratories, Inc. | Network failure detection and prediction using signal measurements |
CN104467938B (zh) * | 2014-11-20 | 2018-06-22 | 京信通信系统(中国)有限公司 | 选择分集接收合并模式的方法和系统 |
CN105142173B (zh) * | 2015-08-27 | 2018-10-12 | 华为技术有限公司 | 一种信号输出装置、板卡和方法 |
US9998949B2 (en) * | 2015-12-31 | 2018-06-12 | Facebook, Inc. | Switched diversity in data link layers of directional networks |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7092352B2 (en) * | 1993-07-23 | 2006-08-15 | Aquity, Llc | Cancellation systems for multicarrier transceiver arrays |
JP3737264B2 (ja) | 1998-01-14 | 2006-01-18 | 株式会社東芝 | ダイバーシチ受信装置 |
ATE358924T1 (de) * | 1998-06-15 | 2007-04-15 | Motorola Inc | Verfahren und gerät zur verbesserung der kapazität in einem funkkommunikationssystem |
JP4287536B2 (ja) | 1998-11-06 | 2009-07-01 | パナソニック株式会社 | Ofdm送受信装置及びofdm送受信方法 |
EP1067707A1 (en) | 1999-07-09 | 2001-01-10 | Alcatel | Method to modify a current transmitted power distribution in case of macro-diversity and corresponding mobile Station |
DE10025987C2 (de) * | 2000-05-25 | 2002-04-04 | Siemens Ag | Verfahren zum Steuern der Downlink-Strahlformung |
US6862271B2 (en) * | 2002-02-26 | 2005-03-01 | Qualcomm Incorporated | Multiple-input, multiple-output (MIMO) systems with multiple transmission modes |
US6842632B2 (en) | 2002-12-30 | 2005-01-11 | Nokia Corporation | Apparatus, and associated method, for facilitating antenna weight selection utilizing deterministic perturbation gradient approximation |
US6745009B2 (en) | 2002-05-15 | 2004-06-01 | Nokia Corporation | Apparatus, and associated method, for facilitating antenna weight selection utilizing deterministic perturbation gradient approximation |
US7392015B1 (en) * | 2003-02-14 | 2008-06-24 | Calamp Corp. | Calibration methods and structures in wireless communications systems |
US7983355B2 (en) * | 2003-07-09 | 2011-07-19 | Broadcom Corporation | System and method for RF signal combining and adaptive bit loading for data rate maximization in multi-antenna communication systems |
-
2005
- 2005-07-12 JP JP2006529060A patent/JP4592698B2/ja not_active Expired - Fee Related
- 2005-07-12 KR KR1020077002423A patent/KR20070046832A/ko not_active Application Discontinuation
- 2005-07-12 WO PCT/JP2005/012843 patent/WO2006011360A1/ja active Application Filing
- 2005-07-12 EP EP05765674A patent/EP1760978A4/en not_active Withdrawn
- 2005-07-12 US US11/658,572 patent/US7869760B2/en active Active
- 2005-07-12 CN CNA2005800193855A patent/CN1969521A/zh active Pending
- 2005-07-12 BR BRPI0513984-8A patent/BRPI0513984A/pt not_active IP Right Cessation
-
2010
- 2010-12-01 US US12/958,066 patent/US8140022B2/en not_active Expired - Fee Related
-
2012
- 2012-02-13 US US13/372,219 patent/US8340589B2/en active Active
- 2012-11-15 US US13/678,309 patent/US8626077B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20110075757A1 (en) | 2011-03-31 |
US8626077B2 (en) | 2014-01-07 |
US8140022B2 (en) | 2012-03-20 |
CN1969521A (zh) | 2007-05-23 |
US20120142275A1 (en) | 2012-06-07 |
US8340589B2 (en) | 2012-12-25 |
KR20070046832A (ko) | 2007-05-03 |
JP4592698B2 (ja) | 2010-12-01 |
JPWO2006011360A1 (ja) | 2008-05-01 |
US7869760B2 (en) | 2011-01-11 |
EP1760978A1 (en) | 2007-03-07 |
EP1760978A4 (en) | 2012-01-04 |
US20080311863A1 (en) | 2008-12-18 |
WO2006011360A1 (ja) | 2006-02-02 |
US20130090069A1 (en) | 2013-04-11 |
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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 7A ANUIDADE. |
|
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: NAO APRESENTADA A GUIA DE CUMPRIMENTO DE EXIGENCIA. REFERENTE A 7A ANUIDADE. |