JP2006509378A - ベースバンド変換を使用して送信機の性能を改善する方法および装置 - Google Patents
ベースバンド変換を使用して送信機の性能を改善する方法および装置 Download PDFInfo
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- 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
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3252—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output
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- 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
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3294—Acting on the real and imaginary components of the input signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0483—Transmitters with multiple parallel paths
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- Nonlinear Science (AREA)
- Power Engineering (AREA)
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- Transmitters (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
Description
Vout1=0.5・Vin1∠0°+0.5・Vin2∠-90°+0.5・Vin3∠-90°+0.5・Vin4∠-180°
Vout2=0.5・Vin1∠-90°+0.5・Vin2∠-180°+0.5・Vin3∠0°+0.5・Vin4∠-90°
Vout3=0.5・Vin1∠-90°+0.5・Vin2∠0°+0.5・Vin3∠-180°+0.5・Vin4∠-90°
Vout4=0.5・Vin1∠180°+0.5・Vin2∠-90°+0.5・Vin3∠-90°+0.5・Vin4∠0°
マトリックスまたは式のいずれもが出力信号Voutと入力信号Vinとの関係を示す。これらの演算をDSPで行えばよいことは直ちに理解できる。
Claims (4)
- ベースバンド信号を処理し、増幅用の低レベル信号を供給してマルチチャネル送信機の性能を改善する装置であって、
少なくとも一つの入力信号に接続され、各々が位相シフト済みの前記少なくとも一つの入力信号の組み合わせを含む複数の出力信号を供給する第1の変換マトリックス(TM)と、
前記出力信号に接続され、所定のアルゴリズムにより前記出力信号の各々を修正して複数の修正済みの出力信号を供給する処理ユニットと、
前記修正済みの出力信号に接続され、前記修正済みの出力信号を分解して、それぞれが前記入力信号のうちの一つに対応する少なくとも一つの出力ベースバンド信号を供給する第2のTMと、
前記複数の修正済みの出力信号および前記出力ベースバンド信号のうちの一つに配置され、かつ相互接続され、前記複数の修正済みの出力信号および前記出力ベースバンド信号のうちのの前記一つを補償して、前記出力ベースバンド信号が、前記マルチチャネル送信機の性能を改善する低レベル信号を生成するのに適したものとなるようにする補償機能部とを備える装置。 - 電力増幅器に冗長性を与えるアナログ・フーリエ変換マトリックスを使用し、改善された性能を有するマルチチャネル送信機であって、
ベースバンド信号を処理するための装置であって、少なくとも一つの入力信号に接続され、それぞれが位相シフトした前記入力信号の組み合わせを含む複数の出力信号を供給する第1のフーリエ変換マトリックス(FTM)と、前記複数の出力信号に接続され、所定のアルゴリズムにより前記出力信号の各々を修正して複数の修正済みの出力信号を供給する処理ユニットと、前記複数の修正済みの出力信号に接続され、前記修正済みの出力信号を分解して、それぞれが前記入力信号のうちの一つに対応する少なくとも一つの出力ベースバンド信号を供給する第2のFTMと、前記複数の修正済みの出力信号および前記出力ベースバンド信号のうちの一つに配置され、かつ相互接続され、前記複数の修正済みの出力信号および前記出力ベースバンド信号のうちの前記一つをフィードバック信号により補償する補償機能部とを備える、前記ベースバンド信号を処理するための装置と、
前記出力ベースバンド信号の各々を無線周波信号に変換して少なくとも一つの無線周波信号を供給するためのミキサと、
それぞれが位相シフトした前記無線周波信号の組み合わせを含む複数の増幅器入力信号を供給する第1のアナログFTMと、
複数の増幅器出力信号を供給する複数の増幅器を有する電力増幅器であって、各増幅器が前記複数の増幅器入力信号のうちの一つに接続された入力を有し、前記複数の増幅器出力信号のうちの一つを供給する、前記電力増幅器と、
前記複数の増幅器入力信号および前記複数の増幅済みの出力信号のうちの一方の複数の部分に接続されたサンプラーであって、前記複数の部分の各々が、前記補償機能部に戻る、前記複数の増幅器入力信号および前記複数の増幅済みの出力信号のうちの前記一方における一つを表し、前記複数の部分が前記フィードバック信号に対応する、前記サンプラーと、
前記複数の増幅済みの出力信号に接続され、前記出力ベースバンド信号に1対1で対応する少なくとも一つの送信信号を供給する第2のアナログFTMとを備えるマルチチャネル送信機。 - 電力増幅器に冗長性を与えるアナログ・フーリエ変換マトリックスを使用して、マルチチャネル送信機の性能を改善するための方法であって、
それぞれが位相シフトした少なくとも一つの入力信号の組み合わせを含む複数の出力信号を供給するステップと、
所定のアルゴリズムにより前記各出力信号を修正して、複数の修正済みの出力信号を供給するステップと、
前記修正済みの出力信号を分解して、少なくとも一つの出力ベースバンド信号を供給するステップであって、前記出力ベースバンド信号の各々が前記入力信号のうちの一つと対応している、前記分解ステップと、
フィードバック信号により、前記複数の修正済みの出力信号および前記出力ベースバンド信号のうちの一方を補償するステップと、
前記出力ベースバンド信号の各々を無線周波信号に変換して、少なくとも一つの無線周波信号を供給するステップと、
複数の増幅器入力信号を生成するステップであって、それぞれが位相シフトした前記無線周波信号の組み合わせを含み、前記増幅器入力信号が前記修正済みの出力信号に対応している、前記生成ステップと、
複数の増幅器を有する電力増幅器を使用して、前記複数の増幅器入力信号を増幅して、複数の増幅済みの出力を供給するステップであって、各増幅器が、前記複数の増幅器入力信号のうちの一つに接続された入力を有し、前記増幅済みの出力信号のうちの一つを供給する、前記増幅ステップと、
それぞれが前記複数の増幅器入力信号および前記複数の増幅済みの出力信号のうちの一方を表す、前記複数の増幅器入力信号および前記複数の増幅済みの出力信号のうちの一方の複数の部分を接続して、補償機能に戻すステップであって、前記複数の部分が前記フィードバック信号に対応している、前記接続ステップと、
前記複数の増幅済みの出力信号を分解して、前記出力ベースバンド信号に1対1で対応する少なくとも一つの送信信号を供給するステップとを備える方法。 - ベースバンド信号を処理し、増幅用の低レベル信号を供給して、マルチチャネル送信機の性能を改善する装置であって、
少なくとも一つの入力信号に接続され、それぞれが位相シフトした前記少なくとも一つの入力信号の組み合わせを含む複数の出力信号を供給する第1の変換マトリックス(TM)と、
前記出力信号に接続され、所定のアルゴリズムにより前記各出力信号に先行歪みを与え、複数の先行歪みを与えた出力信号を供給する処理ユニットと、
前記先行歪みを与えた出力信号に接続され、前記先行歪みを与えた出力信号を分解して、少なくとも一つの出力ベースバンド信号を供給する第2のTMであって、前記出力バースバンド信号の各々が、前記入力信号のうちの一つに対応し、前記マルチチャネル送信機の性能を改善する低レベル信号を生成するのに適している、前記第2のTMとを備える装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/101,903 US6983026B2 (en) | 2002-03-19 | 2002-03-19 | Method and apparatus using base band transformation to improve transmitter performance |
PCT/US2003/003876 WO2003081792A1 (en) | 2002-03-19 | 2003-02-07 | Method and apparatus using base band transformation to improve transmitter performance |
Publications (2)
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JP2006509378A true JP2006509378A (ja) | 2006-03-16 |
JP4261367B2 JP4261367B2 (ja) | 2009-04-30 |
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JP2003579378A Expired - Lifetime JP4261367B2 (ja) | 2002-03-19 | 2003-02-07 | ベースバンド変換を使用して送信機の性能を改善する方法および装置 |
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US (1) | US6983026B2 (ja) |
EP (1) | EP1486005B1 (ja) |
JP (1) | JP4261367B2 (ja) |
KR (1) | KR100958046B1 (ja) |
CN (1) | CN100373782C (ja) |
AT (1) | ATE466413T1 (ja) |
AU (1) | AU2003216211A1 (ja) |
DE (1) | DE60332332D1 (ja) |
WO (1) | WO2003081792A1 (ja) |
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US6983026B2 (en) | 2002-03-19 | 2006-01-03 | Motorola, Inc. | Method and apparatus using base band transformation to improve transmitter performance |
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2002
- 2002-03-19 US US10/101,903 patent/US6983026B2/en not_active Expired - Lifetime
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2003
- 2003-02-07 AU AU2003216211A patent/AU2003216211A1/en not_active Abandoned
- 2003-02-07 DE DE60332332T patent/DE60332332D1/de not_active Expired - Lifetime
- 2003-02-07 AT AT03745074T patent/ATE466413T1/de not_active IP Right Cessation
- 2003-02-07 KR KR1020047014701A patent/KR100958046B1/ko active IP Right Grant
- 2003-02-07 EP EP03745074A patent/EP1486005B1/en not_active Expired - Lifetime
- 2003-02-07 JP JP2003579378A patent/JP4261367B2/ja not_active Expired - Lifetime
- 2003-02-07 CN CNB038062771A patent/CN100373782C/zh not_active Expired - Lifetime
- 2003-02-07 WO PCT/US2003/003876 patent/WO2003081792A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013515424A (ja) * | 2009-12-21 | 2013-05-02 | ダリ システムズ カンパニー リミテッド | 無線通信のための高効率、リモートで再構成可能なリモート無線ヘッドユニットのシステム及び方法 |
Also Published As
Publication number | Publication date |
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EP1486005A1 (en) | 2004-12-15 |
JP4261367B2 (ja) | 2009-04-30 |
ATE466413T1 (de) | 2010-05-15 |
EP1486005B1 (en) | 2010-04-28 |
US20030179829A1 (en) | 2003-09-25 |
CN1647395A (zh) | 2005-07-27 |
CN100373782C (zh) | 2008-03-05 |
US6983026B2 (en) | 2006-01-03 |
KR20040091764A (ko) | 2004-10-28 |
WO2003081792A1 (en) | 2003-10-02 |
DE60332332D1 (de) | 2010-06-10 |
KR100958046B1 (ko) | 2010-05-17 |
AU2003216211A1 (en) | 2003-10-08 |
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