CN100496034C - Ofdm系统中的功率放大器瞬变补偿 - Google Patents
Ofdm系统中的功率放大器瞬变补偿 Download PDFInfo
- Publication number
- CN100496034C CN100496034C CNB028239423A CN02823942A CN100496034C CN 100496034 C CN100496034 C CN 100496034C CN B028239423 A CNB028239423 A CN B028239423A CN 02823942 A CN02823942 A CN 02823942A CN 100496034 C CN100496034 C CN 100496034C
- Authority
- CN
- China
- Prior art keywords
- power amplifier
- transition
- ofdm
- gain coefficient
- scalar gain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Images
Classifications
-
- 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
- H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/005—Control by a pilot signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
-
- 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
-
- 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
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
- H04L2025/03414—Multicarrier
Abstract
Description
发射信号 | 误差向量幅度 |
16OFDM码元无瞬变128OFDM码元无瞬变16OFDM码元有瞬变128OFDM码元有瞬变 | 30.5dB30.0dB29.1dB24.2dB |
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01403082.9 | 2001-11-30 | ||
EP01403082A EP1317107B1 (en) | 2001-11-30 | 2001-11-30 | Power amplifier transient compensation in OFDM systems |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1600008A CN1600008A (zh) | 2005-03-23 |
CN100496034C true CN100496034C (zh) | 2009-06-03 |
Family
ID=8182994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB028239423A Expired - Lifetime CN100496034C (zh) | 2001-11-30 | 2002-11-21 | Ofdm系统中的功率放大器瞬变补偿 |
Country Status (9)
Country | Link |
---|---|
US (1) | US7706758B2 (zh) |
EP (1) | EP1317107B1 (zh) |
JP (1) | JP4260019B2 (zh) |
KR (1) | KR100922705B1 (zh) |
CN (1) | CN100496034C (zh) |
AT (1) | ATE301361T1 (zh) |
AU (1) | AU2002338948A1 (zh) |
DE (1) | DE60112451T2 (zh) |
WO (1) | WO2003047195A1 (zh) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100555520B1 (ko) | 2003-10-28 | 2006-03-03 | 삼성전자주식회사 | 다중 캐리어 신호의 비선형적 왜곡을 보상하는 다중캐리어 신호 왜곡 보상 장치, 이를 구비한 다중 캐리어신호 수신기, 및 그 방법 |
US8428001B2 (en) | 2005-03-10 | 2013-04-23 | Qualcomm Incorporated | Timing corrections in a multi carrier system and propagation to a channel estimation time filter |
KR100721248B1 (ko) * | 2006-01-31 | 2007-05-23 | 에스케이 텔레콤주식회사 | 직교 주파수 분할 다중 접속방식 통신 시스템의 대전력증폭기 제어 시스템 |
CN101114854B (zh) * | 2006-07-28 | 2011-05-18 | 北京信威通信技术股份有限公司 | 用于时分双工系统的功率放大器的线性化控制装置和方法 |
BRPI0808484A2 (pt) * | 2007-03-05 | 2014-07-08 | Qualcomm Inc | Equipamentos e métodos para compensar efeitos de descontinuidades na saída de controle automático de ganho em um sistema de multi-portadora |
US8223899B2 (en) * | 2007-03-23 | 2012-07-17 | Qualcomm Incorporated | Methods and apparatus for initial acquisition gain control in a communication system |
US20130272168A1 (en) * | 2012-04-13 | 2013-10-17 | Qualcomm Incorporated | Reducing transient effects when changing transmit chain power |
CN104469925B (zh) * | 2014-11-28 | 2017-12-22 | 深圳市海思半导体有限公司 | 一种频域自动增益控制方法和装置 |
CN114375029B (zh) * | 2021-12-27 | 2023-06-27 | 天翼物联科技有限公司 | NB-IoT水表功率控制优化方法、系统、装置及存储介质 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9510127D0 (en) * | 1995-05-20 | 1995-08-02 | West End System Corp | CATV Data transmission system |
US5764706A (en) * | 1995-08-31 | 1998-06-09 | Usa Digital Radio Partners, L.P. | AM compatible digital waveform frame timing recovery and frame synchronous power measurement |
US5732333A (en) * | 1996-02-14 | 1998-03-24 | Glenayre Electronics, Inc. | Linear transmitter using predistortion |
US5796784A (en) * | 1996-03-27 | 1998-08-18 | Motorola, Inc. | Method and apparatus for modifying amplitude of at least one symbol |
JPH09321676A (ja) * | 1996-05-29 | 1997-12-12 | Nec Corp | 非再生局用マルチキャリア自動利得制御方式 |
US5949796A (en) * | 1996-06-19 | 1999-09-07 | Kumar; Derek D. | In-band on-channel digital broadcasting method and system |
US5878089A (en) * | 1997-02-21 | 1999-03-02 | Usa Digital Radio Partners, L.P. | Coherent signal detector for AM-compatible digital audio broadcast waveform recovery |
US6975694B1 (en) * | 1999-12-15 | 2005-12-13 | Paradyne Corporation | Digital subscriber line driver |
US6657492B1 (en) * | 2000-02-24 | 2003-12-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | System for estimating a non-linear characteristic of an amplifier |
JP4178712B2 (ja) * | 2000-04-04 | 2008-11-12 | 株式会社デンソー | 利得調整装置 |
WO2001084806A2 (en) * | 2000-05-02 | 2001-11-08 | Phonex Broadband Corporation | Method and system for adapting a telephone line modem for use on the power line |
JP3297739B2 (ja) * | 2000-06-14 | 2002-07-02 | 佐賀大学長 | 制御装置 |
US20020164968A1 (en) * | 2001-03-06 | 2002-11-07 | Magis Networks, Inc. | Probing scheme for diversity antenna branch selection |
DE60131104T2 (de) * | 2001-03-14 | 2008-02-07 | Nokia Corp. | Verfahren und funkübertragungseinheit zur leistungsdetektion eines vielfachträgersignals |
US20020159532A1 (en) * | 2001-03-23 | 2002-10-31 | Icefyre Semiconductor Corporation | Computational circuits and methods for signal deconstruction/reconstruction in wireless transceivers |
US7307569B2 (en) * | 2001-03-29 | 2007-12-11 | Quellan, Inc. | Increasing data throughput in optical fiber transmission systems |
US7190748B2 (en) * | 2001-08-17 | 2007-03-13 | Dsp Group Inc. | Digital front-end for wireless communication system |
-
2001
- 2001-11-30 EP EP01403082A patent/EP1317107B1/en not_active Expired - Lifetime
- 2001-11-30 AT AT01403082T patent/ATE301361T1/de not_active IP Right Cessation
- 2001-11-30 DE DE60112451T patent/DE60112451T2/de not_active Expired - Fee Related
-
2002
- 2002-11-21 US US10/497,426 patent/US7706758B2/en not_active Expired - Fee Related
- 2002-11-21 WO PCT/EP2002/013060 patent/WO2003047195A1/en active Application Filing
- 2002-11-21 AU AU2002338948A patent/AU2002338948A1/en not_active Abandoned
- 2002-11-21 CN CNB028239423A patent/CN100496034C/zh not_active Expired - Lifetime
- 2002-11-21 KR KR1020047008347A patent/KR100922705B1/ko active IP Right Grant
- 2002-11-21 JP JP2003548486A patent/JP4260019B2/ja not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
数字通信. John G.Proakis著,张力军 张宗橙 郑宝玉等译,404-438,电子工业出版社. 2001 |
数字通信. John G.Proakis著,张力军 张宗橙 郑宝玉等译,404-438,电子工业出版社. 2001 * |
Also Published As
Publication number | Publication date |
---|---|
KR20040061016A (ko) | 2004-07-06 |
US20050105656A1 (en) | 2005-05-19 |
DE60112451D1 (de) | 2005-09-08 |
DE60112451T2 (de) | 2006-04-06 |
JP4260019B2 (ja) | 2009-04-30 |
WO2003047195A1 (en) | 2003-06-05 |
AU2002338948A1 (en) | 2003-06-10 |
EP1317107B1 (en) | 2005-08-03 |
US7706758B2 (en) | 2010-04-27 |
EP1317107A1 (en) | 2003-06-04 |
CN1600008A (zh) | 2005-03-23 |
KR100922705B1 (ko) | 2009-10-22 |
ATE301361T1 (de) | 2005-08-15 |
JP2005510963A (ja) | 2005-04-21 |
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Legal Events
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: TIANDING INVESTMENT CO., LTD. Free format text: FORMER OWNER: FISICAL SEMICONDUCTOR INC. Effective date: 20150623 Owner name: APPLE COMPUTER, INC. Free format text: FORMER OWNER: TIANDING INVESTMENT CO., LTD. Effective date: 20150623 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20150623 Address after: American California Patentee after: APPLE Inc. Address before: American California Patentee before: Zenith investment LLC Effective date of registration: 20150623 Address after: American California Patentee after: Zenith investment LLC Address before: Texas, USA Patentee before: FREESCALE SEMICONDUCTOR, Inc. |
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CX01 | Expiry of patent term |
Granted publication date: 20090603 |
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CX01 | Expiry of patent term |