JP2010518660A - 多チャンネル広帯域通信システムにおけるベースバンドプリディストーション線形化の方法及びシステム - Google Patents
多チャンネル広帯域通信システムにおけるベースバンドプリディストーション線形化の方法及びシステム Download PDFInfo
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- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
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Abstract
Description
本願は、2006年12月26日に出願され本願と発明者同一の米国仮特許出願第60/877,035号の利益を主張する。また、2007年12月7日に出願された米国仮特許出願第61/012,416号の利益を主張する。両出願は本明細書に文献援用される。米国仮特許出願第61/012,416は付録1として本明細書に含まれる。
Claims (12)
- 多重変調方式を使用する多チャンネル広帯域通信システムの隣接チャンネル電力比を低減かつメモリ効果を補償する方法であって、
通信システムのベースバンド入力信号のサンプルからアドレスを生成するステップと、
前記アドレスに応じてメモリレスルックアップテーブルからエントリを取得するステップと、
前記ベースバンド入力信号と前記ルックアップテーブルの前記エントリとを乗算するステップと、
前記乗算するステップをプリイコライズするステップと
を含む方法。 - 前記ルックアップテーブルの前記エントリは複素係数である、請求項1に記載の方法。
- 前記プリイコライズするステップは、区分的なイコライズを含む、請求項1に記載の方法。
- 前記プリイコライズするステップは、有限インパルス応答フィルタリングを使用する、請求項1に記載の方法。
- 前記区分的なプリイコライザは、無限インパルス応答フィルタではなく有限インパルス応答フィルタを使用する、請求項3に記載の方法。
- 間接学習法を使用して前記エントリを更新することをさらに含む、請求項1に記載の方法。
- 前記間接学習法は最小平均自乗アルゴリズムを使用する、請求項6に記載の方法。
- 多重変調方式を使用する多チャンネル広帯域通信システムの隣接チャンネル電力比を低減かつメモリ効果を補償するシステムであって、
通信システムのベースバンド入力信号のサンプルからアドレスを生成するアドレス生成器と、
前記アドレスに応じてアドレス指定可能な係数を有するメモリレスルックアップテーブルと、
前記ベースバンド入力信号と前記係数とを組み合わせる乗算器と、
ルックアップテーブルエントリと、
前記乗算器をプリイコライズして前記通信システムの電力増幅器におけるメモリ効果を補償するイコライザと
を含むシステム。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87703506P | 2006-12-26 | 2006-12-26 | |
US60/877,035 | 2006-12-26 | ||
US1241607P | 2007-12-07 | 2007-12-07 | |
US61/012,416 | 2007-12-07 | ||
PCT/IB2007/004404 WO2008078195A2 (en) | 2006-12-26 | 2007-12-20 | Method and system for baseband predistortion linearization in multi-channel wideband communication systems |
Publications (2)
Publication Number | Publication Date |
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JP2010518660A true JP2010518660A (ja) | 2010-05-27 |
JP5236661B2 JP5236661B2 (ja) | 2013-07-17 |
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Application Number | Title | Priority Date | Filing Date |
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JP2009543544A Active JP5236661B2 (ja) | 2006-12-26 | 2007-12-20 | 多チャンネル広帯域通信システムにおけるベースバンドプリディストーション線形化の方法及びシステム |
Country Status (7)
Country | Link |
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US (17) | US8149950B2 (ja) |
EP (3) | EP2106648B1 (ja) |
JP (1) | JP5236661B2 (ja) |
KR (2) | KR20100014339A (ja) |
CN (2) | CN102017553B (ja) |
HK (1) | HK1205382A1 (ja) |
WO (1) | WO2008078195A2 (ja) |
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