JP2001506830A - マルチチャネル増幅器における相互変調補償 - Google Patents
マルチチャネル増幅器における相互変調補償Info
- Publication number
- JP2001506830A JP2001506830A JP52770098A JP52770098A JP2001506830A JP 2001506830 A JP2001506830 A JP 2001506830A JP 52770098 A JP52770098 A JP 52770098A JP 52770098 A JP52770098 A JP 52770098A JP 2001506830 A JP2001506830 A JP 2001506830A
- Authority
- JP
- Japan
- Prior art keywords
- intermodulation
- waveform
- signal
- compensation waveform
- channel
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 13
- 230000005236 sound signal Effects 0.000 claims description 6
- 108091006146 Channels Proteins 0.000 description 39
- 239000011159 matrix material Substances 0.000 description 39
- 239000000969 carrier Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- IRLPACMLTUPBCL-KQYNXXCUSA-N 5'-adenylyl sulfate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OS(O)(=O)=O)[C@@H](O)[C@H]1O IRLPACMLTUPBCL-KQYNXXCUSA-N 0.000 description 2
- 239000005574 MCPA Substances 0.000 description 2
- WHKUVVPPKQRRBV-UHFFFAOYSA-N Trasan Chemical compound CC1=CC(Cl)=CC=C1OCC(O)=O WHKUVVPPKQRRBV-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
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- 238000001914 filtration Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 241001125929 Trisopterus luscus Species 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.マルチチャネル送信電力増幅器アレイにおける相互変調歪みを低減する方法 であって、 すべての利用可能な送信チャネル数を、所望信号を送信するために用いられる 第一の送信チャネルグループと、第二の送信チャネルグループとに分割するステ ップと、 前記利用可能な送信チャネルにおける最大の信号振幅を最小化するために、所 望信号の瞬間的複素値から相互変調補償波形のための瞬間的複素波形値を計算す るステップと、 前記第一の送信チャネルグループにおける相互変調歪みを改善するために、前 記相互変調補償波形を前記第二の送信チャネルグループに入力するステップとか ら構成されることを特徴とする方法。 2.マルチチャネル無線電話通信システムにおいて相互変調歪みを低減する方法 であって、 送信のために用いられているチャネルと、無音であるチャネルとを特定の時点 において決定するステップと、 前記チャネルのすべてにおける最大の信号振幅を最小化するために、所望送信 信号の瞬間的複素値から相互変調補償波形のための瞬間的複素波形値を計算する ステップと、 相互変調歪みを改善するために、前記相互変調補償波形を前記無音チャネルに 入力するステップとから構成されることを特徴とする方法。 3.前記相互変調補償波形は、増幅され、ダミー負荷で散逸されることを特徴と する請求の範囲第2項に記載の方法。 4.第1の複数個の素子を有し、第1の複数個のビームを形成することのできる アタティブフェーズドアレイ送信アンテナを備える衛星通信システムにおいて相 互変調歪みを低減する方法であって、 送信のために用いられているビームと、非アクティブであるビームとを特定の 時点において決定するステップと、 すべてのビームにおける最大の信号振幅を最小化するために、送信信号の瞬間 的複素値から相互変調補償波形のための瞬間的複素波形値を計算するステップと 、 送信に用いられるビームにおける相互変調歪みを改善するために、前記相互変 調補償波形を前記非アクティブビームに入力するステップとから構成されること を特徴とする方法。 5.前記相互変調補償波形は、地球に向けられていないビームに入力されること を特徴とする請求の範囲第4項に記載の方法。 6.前記相互変調補償波形は、ダミー負荷で散逸されることを特徴とする請求の 範囲第4項に記載の方法。 7.第1の複数個の素子を有し、第1の複数個のビームを形成することのできる アクティブフェーズドアレイ送信アンテナを備える衛星通信システムにおいて相 互変調歪みを低減する装置であって、 送信のために用いられているビームと、非アクティブであるビームとを特定の 時点において決定する手段と、 すべてのビームにおける最大の信号振幅を最小化するために、送信信号の瞬間 的複素値から相互変調補償波形のための瞬間的複素波形値を計算する手段と、 送信に用いられるビームにおける相互変調歪みを改善するために、前記相互変 調補償波形を前記非アクティブビームに入力する手段とから構成されることを特 徴とする装置。 8.前記相互変調補償波形は、地球に向けられていないビームに入力されること を特徴とする請求の範囲第7項に記載の装置。 9.前記相互変調補償波形は、ダミー負荷で散逸されることを特徴とする請求の 範囲第7項に記載の装置。 10.無線電話通信において相互変調歪みを低減する装置であって、 音声信号のディジタル化、圧縮、誤り訂正符号化を行うための音声符号化器で あって、音声の有音区間、無音区間を示す音声アクティビティ信号をも生成する ことのできる音声符号化器をそれぞれ具備する複数の生成器と、 符号化されたディジタル音声信号を送信無線周波数搬送波に載せる変調手段と 、 アクティブな音声変調信号の関数として少なくとも一つの相互変調圧縮波形を 計算する波形生成器と、 前記音声アクティビティ信号に応じて、有音区間のときには前記変調手段から 音声変調無線信号を、無音区間のときには前記波長生成器から相互変調補償波形 を選択するように動作するスイッチ手段とを備えることを特徴とする装置。 11.無線電話通信において相互変調歪みを低減する方法であって、 複数の生成器において、音声信号をディジタル化、圧縮、誤り訂正符号化を行 うステップと、 音声の有音区間、無音区間を示す音声アクティビティ信号を生成するステップ と、 符号化されたディジタル音声信号を送信無線周波数搬送波に載せるステップと 、 アクティブな音声変調信号の関数として少なくとも一つの相互変調圧縮波形を 計算するステップと、 前記音声アクティビティ信号に応じて、有音区間のときには前記変調手段から 音声変調無線信号を、無音区間のときには前記波長生成器から相互変調補償波形 を選択するようにステップとから構成されることを特徴とする方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/764,877 US5933766A (en) | 1996-12-16 | 1996-12-16 | Intermodulation compensation in multi-channel amplifiers |
US08/764,877 | 1996-12-16 | ||
PCT/US1997/020808 WO1998027645A1 (en) | 1996-12-16 | 1997-11-24 | Intermodulation compensation in multi-channel amplifiers |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001506830A true JP2001506830A (ja) | 2001-05-22 |
JP3805794B2 JP3805794B2 (ja) | 2006-08-09 |
Family
ID=25072049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52770098A Expired - Fee Related JP3805794B2 (ja) | 1996-12-16 | 1997-11-24 | マルチチャネル増幅器における相互変調補償 |
Country Status (10)
Country | Link |
---|---|
US (2) | US5933766A (ja) |
EP (1) | EP0944953B1 (ja) |
JP (1) | JP3805794B2 (ja) |
CN (1) | CN1130818C (ja) |
AU (1) | AU732127B2 (ja) |
BR (1) | BR9714040A (ja) |
CA (1) | CA2274914A1 (ja) |
DE (1) | DE69706064T2 (ja) |
TW (1) | TW354441B (ja) |
WO (1) | WO1998027645A1 (ja) |
Families Citing this family (42)
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US5933766A (en) | 1996-12-16 | 1999-08-03 | Ericsson Inc. | Intermodulation compensation in multi-channel amplifiers |
FR2766638B1 (fr) * | 1997-07-24 | 1999-09-24 | Alsthom Cge Alcatel | Dispositif de linearisation d'amplificateurs d'emission |
US6351654B1 (en) * | 1997-10-23 | 2002-02-26 | Lucent Technologies Inc. | Antenna configuration for a hybrid inner/outer sectored cell |
US6889034B1 (en) * | 1998-04-02 | 2005-05-03 | Ericsson Inc. | Antenna coupling systems and methods for transmitters |
FI108196B (fi) * | 1999-09-30 | 2001-11-30 | Nokia Networks Oy | Järjestely ja menetelmä radiojärjestelmän lähetinvastaanotintoiminnan toteuttamiseksi |
US6799059B1 (en) * | 1999-12-22 | 2004-09-28 | Bellsouth Intellectual Property Corporation | System and method for improving downlink signal quality in mobile telephone communications systems |
US6731693B1 (en) * | 2000-02-29 | 2004-05-04 | Skyworks Solutions, Inc. | System of and method for compensating a baseband signal to reduce third order modulation distortion |
US6584330B1 (en) | 2000-07-18 | 2003-06-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Adaptive power management for a node of a cellular telecommunications network |
US20020146996A1 (en) * | 2001-03-06 | 2002-10-10 | Bachman Thomas A. | Scanning receiver for use in power amplifier linearization |
US6829471B2 (en) | 2001-03-07 | 2004-12-07 | Andrew Corporation | Digital baseband receiver in a multi-carrier power amplifier |
US6545541B2 (en) | 2001-05-29 | 2003-04-08 | Ericsson Inc. | Power amplifier embedded cell bias detection, methods of detecting bias in power amplifiers and systems utilizing embedded cell bias detection |
US6665525B2 (en) | 2001-05-29 | 2003-12-16 | Ericsson Inc. | High-level modulation method and apparatus |
US7012970B2 (en) | 2002-03-19 | 2006-03-14 | Motorola, Inc. | Method and apparatus for reducing transmitter peak power requirements |
US7020215B2 (en) | 2002-03-19 | 2006-03-28 | Motorola, Inc. | Method and apparatus for reducing transmitter peak power requirements using dual matrices |
US7364603B2 (en) * | 2002-12-09 | 2008-04-29 | Applied Materials, Inc. | Method and apparatus for the abatement of toxic gas components from a semiconductor manufacturing process effluent stream |
AU2002360071A1 (en) * | 2002-12-20 | 2004-07-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Peak power limitation in an amplifier pooling scenario |
US7403573B2 (en) * | 2003-01-15 | 2008-07-22 | Andrew Corporation | Uncorrelated adaptive predistorter |
US7729668B2 (en) | 2003-04-03 | 2010-06-01 | Andrew Llc | Independence between paths that predistort for memory and memory-less distortion in power amplifiers |
US20040219889A1 (en) * | 2003-04-29 | 2004-11-04 | Walter Honcharenko | Phase-combined transmitter module and modular transmitter system |
JP2004336448A (ja) * | 2003-05-08 | 2004-11-25 | Nec Corp | マルチポート増幅装置 |
US6972622B2 (en) | 2003-05-12 | 2005-12-06 | Andrew Corporation | Optimization of error loops in distributed power amplifiers |
US7259630B2 (en) * | 2003-07-23 | 2007-08-21 | Andrew Corporation | Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
US6963242B2 (en) * | 2003-07-31 | 2005-11-08 | Andrew Corporation | Predistorter for phase modulated signals with low peak to average ratios |
US7023273B2 (en) * | 2003-10-06 | 2006-04-04 | Andrew Corporation | Architecture and implementation methods of digital predistortion circuitry |
US6946992B2 (en) * | 2003-12-18 | 2005-09-20 | The Boeing Company | Multibeam phased array antenna |
US7327803B2 (en) | 2004-10-22 | 2008-02-05 | Parkervision, Inc. | Systems and methods for vector power amplification |
US7355470B2 (en) | 2006-04-24 | 2008-04-08 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning |
US7911272B2 (en) | 2007-06-19 | 2011-03-22 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments |
US8013675B2 (en) | 2007-06-19 | 2011-09-06 | Parkervision, Inc. | Combiner-less multiple input single output (MISO) amplification with blended control |
US8031804B2 (en) | 2006-04-24 | 2011-10-04 | Parkervision, Inc. | Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion |
US7937106B2 (en) | 2006-04-24 | 2011-05-03 | ParkerVision, Inc, | Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same |
US8315336B2 (en) | 2007-05-18 | 2012-11-20 | Parkervision, Inc. | Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment |
ATE510355T1 (de) * | 2006-12-27 | 2011-06-15 | Ericsson Telefon Ab L M | Bestimmung einer leistungsverringerungsstufe für einen sender |
US7620129B2 (en) | 2007-01-16 | 2009-11-17 | Parkervision, Inc. | RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals |
WO2009005768A1 (en) | 2007-06-28 | 2009-01-08 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
US8509707B2 (en) * | 2007-11-27 | 2013-08-13 | Broadcom Corporation | Wireless communications device, gaming controller and integrated circuits with millimeter wave transceiver and methods for use therewith |
WO2009145887A1 (en) | 2008-05-27 | 2009-12-03 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
EP2695294A1 (en) | 2011-04-08 | 2014-02-12 | Parkervision, Inc. | Systems and methods of rf power transmission, modulation, and amplification |
KR20140034895A (ko) | 2011-06-02 | 2014-03-20 | 파커비전, 인크. | 안테나 제어 |
JP5982065B2 (ja) | 2012-10-01 | 2016-08-31 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | Aas送信機歪みの改善 |
US20150080063A1 (en) | 2013-09-17 | 2015-03-19 | Parkervision, Inc. | Method, apparatus and system for rendering an information bearing function of time |
FR3147470A1 (fr) * | 2023-03-28 | 2024-10-04 | Airbus Defence And Space Sas | Validation de la charge utile d'un satellite de télécommunications basée sur un calcul de rapport de puissance rayonnée entre signal utile et bruit d'intermodulation |
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DE69614284T2 (de) * | 1995-02-02 | 2002-01-10 | Nippon Telegraph And Telephone Corp., Tokio/Tokyo | Verzerrungskorrekturvorrichtung |
US5933766A (en) | 1996-12-16 | 1999-08-03 | Ericsson Inc. | Intermodulation compensation in multi-channel amplifiers |
-
1996
- 1996-12-16 US US08/764,877 patent/US5933766A/en not_active Expired - Lifetime
-
1997
- 1997-11-24 WO PCT/US1997/020808 patent/WO1998027645A1/en active IP Right Grant
- 1997-11-24 CA CA002274914A patent/CA2274914A1/en not_active Abandoned
- 1997-11-24 JP JP52770098A patent/JP3805794B2/ja not_active Expired - Fee Related
- 1997-11-24 AU AU54383/98A patent/AU732127B2/en not_active Ceased
- 1997-11-24 EP EP97948292A patent/EP0944953B1/en not_active Expired - Lifetime
- 1997-11-24 DE DE69706064T patent/DE69706064T2/de not_active Expired - Lifetime
- 1997-11-24 CN CN97181806A patent/CN1130818C/zh not_active Expired - Fee Related
- 1997-11-24 BR BR9714040-6A patent/BR9714040A/pt not_active IP Right Cessation
- 1997-12-09 TW TW086118487A patent/TW354441B/zh active
-
1999
- 1999-06-09 US US09/328,903 patent/US6233436B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1998027645A1 (en) | 1998-06-25 |
AU5438398A (en) | 1998-07-15 |
AU732127B2 (en) | 2001-04-12 |
US6233436B1 (en) | 2001-05-15 |
CN1246220A (zh) | 2000-03-01 |
TW354441B (en) | 1999-03-11 |
JP3805794B2 (ja) | 2006-08-09 |
EP0944953A1 (en) | 1999-09-29 |
DE69706064T2 (de) | 2002-03-21 |
CA2274914A1 (en) | 1998-06-25 |
CN1130818C (zh) | 2003-12-10 |
BR9714040A (pt) | 2000-05-09 |
EP0944953B1 (en) | 2001-08-08 |
DE69706064D1 (de) | 2001-09-13 |
US5933766A (en) | 1999-08-03 |
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