JP4643557B2 - 通信受信機におけるマルチキャリア信号の自動利得制御のための方法および装置 - Google Patents
通信受信機におけるマルチキャリア信号の自動利得制御のための方法および装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/08—Amplitude regulation arrangements
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
- H03G3/3078—Circuits generating control signals for digitally modulated signals
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
- H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
- H03M1/183—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter
- H03M1/185—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter the determination of the range being based on more than one digital output value, e.g. on a running average, a power estimation or the rate of change
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
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- 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
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- 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
- H04L27/28—Systems using multi-frequency codes with simultaneous transmission of different frequencies each representing one code element
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- 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
- H04L5/02—Channels characterised by the type of signal
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Theoretical Computer Science (AREA)
- Circuits Of Receivers In General (AREA)
- Control Of Amplification And Gain Control (AREA)
Description
この出願は、「少ない隣接セルを有するロージオメトリー(low geometry)における復調性能を改良すること」という発明の名称の、2003年2月1日に出願された、米国仮出願シリアル番号60/444,283からの優先権を主張する。
この発明は、一般に通信の分野に関し、特に、通信受信機のマルチキャリア信号の自動利得制御に関する。
一般に、信号の種々の形態の自動利得制御(AGC)が知られている。受信信号のためのAGCプロセスは、受信信号の復調プロセスの前に受信信号の歪レベルを制限することを可能にしてもよい。AGC動作は通常、受信信号の信号強度を閾値と比較することを含む。閾値レベルに対する信号強度レベルに応じて、受信機処理のために受信信号を増幅する増幅器は、増幅レベルを変えてもよい。他の観点において、増幅プロセスは、受信信号強度レベルに基づいて受信信号の減衰に変えてもよい。信号の適切な復調のために、受信機は通常、受信データを運ぶ信号の周波数レンジ外の信号をある程度までフィルタリングするフィルターを信号経路内に有していてもよい。結果として、受信信号強度レベルは主に帯域内信号の信号強度の表示である。信号のAGC処理の後、信号は、受信情報を抽出するために復調器に送られる。
Atten0は、較正から得られた公称減衰である。
Claims (9)
- 下記を具備する、マルチキャリア信号を処理するための通信システム受信機のための方法:
前記処理のために外部ループ自動利得制御(AGC)において、前記マルチキャリア信号の干渉レベルが基準以下である場合、前記マルチキャリア信号の量子化に関する第1のビット数をAGC電圧を調整するキャリブレーションにより決定する;
前記マルチキャリア信号の電力推定値が前記外部ループAGCを動作させるための閾値に到達しないとき、受信処理のための外部ループAGCにおけるマルチキャリア信号の量子化を、決定された第1のビット数により供給される最大量子化レベルで行うように、前記外部ループの減衰レベルが固定値に固定された前記減衰レベルの非アクティブ状態における第1のビット数で外部ループAGCを動作させ、前記マルチキャリア信号の電力推定値が、前記外部ループAGCを動作させるための閾値に到達すると、前記外部ループAGCが、前記第1のビット数より多い、前記減衰レベルのアクティブ状態における第2のビット数で、受信信号の量子化および可能な干渉の量子化を制御するように外部ループAGCを動作させる;
前記受信信号の前記電力推定値が、前記外部ループAGCを非動作にするための閾値に到達すると、前記減衰レベルのアクティブ状態における第2のビット数から、前記減衰レベルの非アクティブ状態における第1のビット数に切替えるように前記外部ループAGCを動作する。 - さらに下記を具備する、請求項1に記載される方法:
前記外部ループAGCを含む外部ループ信号処理を介して渡された不要な信号をチャネルデジタル処理(DCP)ブロックにより拒絶するための内部ループデジタル信号処理。 - 下記を具備する、マルチキャリア信号を処理するための通信システム受信機のための装置:
前記マルチキャリア信号の干渉レベルが基準以下である場合、外部ループ自動利得制御(AGC)が、AGC電圧を調整するためのキャリブレーションにより決定された第1のビット数により供給される最大量子化レベルで動作するように、前記外部ループの減衰レベルが固定値に固定された前記減衰レベルの非アクティブ状態における第1のビット数で、前記外部ループAGCを動作させ、前記マルチキャリア信号の電力推定値が、前記外部ループAGCを動作させるための閾値に到達するとき前記外部ループAGCが、前記減衰レベルの非アクティブ状態における第1のビット数より多い、前記減衰レベルのアクティブ状態における第2のビット数で受信信号の量子化および可能な干渉の量子化を制御するように前記外部ループAGCを動作させ、前記受信信号の前記電力推定値が、前記外部ループAGCを非動作にするための閾値に到達するとき前記減衰レベルのアクティブ状態における第2のビット数から前記減衰レベルのアクティブ状態における第1のビット数に切替えるように構成された外部ループAGC。 - さらに下記を具備する、請求項3に記載された装置:
前記外部ループAGCを含む外部ループ信号処理を介して渡された不要な信号を拒絶するための内部ループデジタル信号プロセッサー。 - 下記を具備する通信システムのための方法:
マルチキャリア信号の干渉レベルが無視できる場合、外部ループ自動利得制御(AGC)が、AGC電圧を調整するためのキャリブレーションにより決定された第1のビット数で動作するように、前記外部ループの減衰レベルが固定値に固定された前記減衰レベルの非アクティブ状態における第1のビット数で、および前記マルチキャリア信号の電力推定値が前記外部ループAGCを動作させるための閾値に到達するとき、前記外部ループAGCが、前記減衰レベルの非アクティブ状態における第1のビット数より多い、前記減衰レベルのアクティブ状態における第2のビット数で前記マルチキャリア信号を量子化する外部ループAGCの動作に従って前記マルチキャリア信号の利得を制御する。 - 前記マルチキャリア信号の利得を制御することは、さらに、前記受信信号の前記電力推定値が、前記外部ループAGCを非動作にするための閾値に到達すると、前記アクティブ状態における前記第2のビット数から前記非アクティブ状態における前記第1のビット数に切替えることをさらに具備する、請求項5に記載される方法。
- さらに、下記を具備する、請求項5に記載の方法:
内部ループデジタル信号処理を介して、前記外部ループAGCを含む外部ループ信号処理を介して渡された不要な信号をチャネルデジタル処理(DCP)ブロックにより拒絶する。 - 下記を具備する、マルチキャリア信号を処理するための装置:
前記マルチキャリア信号の干渉レベルが基準以下である場合、外部ループ自動利得制御(AGC)が、AGC電圧を調整するためのキャリブレーションにより決定された第1のビット数で動作するように、前記外部ループの減衰レベルが固定値に固定された前記減衰レベルの非アクティブ状態における第1のビット数で、および前記マルチキャリア信号の電力推定値が前記外部ループAGCを動作させるための閾値に到達するとき、前記外部ループAGCが、前記減衰レベルの非アクティブ状態における第1のビット数より多い、前記減衰レベルのアクティブ状態における第2のビット数で前記マルチキャリア信号を量子化するための手段を含む、前記マルチキャリア信号の利得を制御するための外部ループAGC;および
前記受信信号の前記電力推定値が前記外部ループAGCを非動作にするための閾値に到達するとき、前記減衰レベルのアクティブ状態における第2のビット数から、前記減衰レベルの非アクティブ状態における第1のビット数に切り換える手段。 - さらに、下記を具備する、請求項8に記載の装置:
前記マルチキャリア信号の各キャリアの前記外部ループAGCを含む外部ループ信号処理を介して渡された不要な信号を拒絶する内部ループデジタル信号プロセッサー。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US44428303P | 2003-02-01 | 2003-02-01 | |
US10/437,203 US7995684B2 (en) | 2003-02-01 | 2003-05-12 | Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver |
PCT/US2004/002927 WO2004071005A1 (en) | 2003-02-01 | 2004-02-02 | Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver |
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JP2006517770A JP2006517770A (ja) | 2006-07-27 |
JP4643557B2 true JP4643557B2 (ja) | 2011-03-02 |
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JP2006503253A Expired - Fee Related JP4643557B2 (ja) | 2003-02-01 | 2004-02-02 | 通信受信機におけるマルチキャリア信号の自動利得制御のための方法および装置 |
Country Status (11)
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US (1) | US7995684B2 (ja) |
EP (1) | EP1588517B1 (ja) |
JP (1) | JP4643557B2 (ja) |
KR (1) | KR101040548B1 (ja) |
CN (1) | CN1757194B (ja) |
AT (1) | ATE368978T1 (ja) |
BR (1) | BRPI0407127A (ja) |
CA (1) | CA2514884A1 (ja) |
DE (1) | DE602004007887T2 (ja) |
MX (1) | MXPA05008215A (ja) |
WO (1) | WO2004071005A1 (ja) |
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JPH0338906A (ja) * | 1989-07-05 | 1991-02-20 | Pioneer Electron Corp | 受信装置 |
JPH04341027A (ja) | 1991-05-17 | 1992-11-27 | Fujitsu Ltd | マルチキャリア信号の無線受信装置 |
US5852630A (en) * | 1997-07-17 | 1998-12-22 | Globespan Semiconductor, Inc. | Method and apparatus for a RADSL transceiver warm start activation procedure with precoding |
KR100283379B1 (ko) * | 1998-11-16 | 2001-03-02 | 정선종 | 병렬 다단 간섭 제거 장치 |
US6480528B1 (en) * | 1999-06-11 | 2002-11-12 | Qualcomm Incorporated | Automatic gain control for improved decoding of multi-carrier signal |
US6504863B1 (en) * | 1999-09-07 | 2003-01-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for adaptive bit resolution in a digital receiver and digital transmitter |
KR100680075B1 (ko) | 1999-09-13 | 2007-02-09 | 유티스타콤코리아 유한회사 | 코드 분할 다중 접속방식 이동통신 기지국 시스템의 무선주파수 수신장치에서 에프에이간 전력레벨 제어장치 |
CN1475056A (zh) * | 2000-10-10 | 2004-02-11 | �����ּ�����˾ | 用于时分双工接收器的自动增益控制 |
US6799024B2 (en) * | 2001-12-18 | 2004-09-28 | Motorola Inc. | Method and apparatus for automatic gain control compensation in a wireless communication system |
JP3933953B2 (ja) * | 2002-02-08 | 2007-06-20 | パイオニア株式会社 | 複数の局部発振周波数を用いる受信機のagc回路 |
JP2003298418A (ja) * | 2002-03-29 | 2003-10-17 | Fujitsu Ltd | 誤差自動較正機能付きアナログ/ディジタル変換器 |
WO2003105390A2 (en) * | 2002-06-07 | 2003-12-18 | Interdigital Technology Corporation | System and method for a direct conversion multi-carrier processor |
US7995684B2 (en) | 2003-02-01 | 2011-08-09 | Qualcomm, Incorporated | Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver |
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2003
- 2003-05-12 US US10/437,203 patent/US7995684B2/en not_active Expired - Fee Related
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2004
- 2004-02-02 BR BR0407127-1A patent/BRPI0407127A/pt not_active IP Right Cessation
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- 2004-02-02 CN CN2004800059828A patent/CN1757194B/zh not_active Expired - Fee Related
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- 2004-02-02 KR KR1020057014171A patent/KR101040548B1/ko active IP Right Grant
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ATE368978T1 (de) | 2007-08-15 |
US7995684B2 (en) | 2011-08-09 |
KR101040548B1 (ko) | 2011-06-16 |
EP1588517B1 (en) | 2007-08-01 |
EP1588517A1 (en) | 2005-10-26 |
MXPA05008215A (es) | 2005-11-04 |
DE602004007887D1 (de) | 2007-09-13 |
JP2006517770A (ja) | 2006-07-27 |
CN1757194B (zh) | 2010-09-29 |
WO2004071005A1 (en) | 2004-08-19 |
CA2514884A1 (en) | 2004-08-19 |
DE602004007887T2 (de) | 2008-04-17 |
BRPI0407127A (pt) | 2006-01-10 |
CN1757194A (zh) | 2006-04-05 |
US20040151264A1 (en) | 2004-08-05 |
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