Title:
チップ・レベル等化受信機の処理速度を下げる方法および装置
Document Type and Number:
Japanese Patent JP2008519556
Kind Code:
A
Abstract:
A method and apparatus for reducing the processing rate when performing chip-level equalization (CLE) in a code division multiple access (CDMA) receiver which includes an equalizer filter. Signals received by at least one antenna of the receiver are sampled at M times the chip rate. Each sample stream is split into M sample data streams at the chip rate. Multipath combining is preferably performed on each split sample data stream. The sample data streams are then combined into one combined sample data stream at the chip rate. The equalizer filter performs equalization on the combined sample stream at the chip rate. Filter coefficients are adjusted by adding a correction term to the filter coefficients utilized by the equalizer filter for a previous iteration.
Inventors:
Kyle Jun-Rinpan
Application Number:
JP2007540329A
Publication Date:
June 05, 2008
Filing Date:
October 19, 2005
Export Citation:
Assignee:
Interdigital Technology Corporation
International Classes:
H04B1/707; H04B3/04; H04B7/005; H04B7/08
Foreign References:
| WO2003107688A2 | 2003-12-24 | |||
| WO2006088685A2 | 2006-08-24 | |||
| WO2003107688A2 | 2003-12-24 | |||
| WO2006088685A2 | 2006-08-24 |
Other References:
JPN6010006561, Ｔｈｏｍａｓ Ｐ． Ｋｒａｕｓｓ ｅｔ ａｌ．, "Ｏｖｅｒｓａｍｐｌｉｎｇ Ｄｉｖｅｒｓｉｔｙ ｖｅｒｓｕｓ Ｄｕａｌ Ａｎｔｅｎｎａ Ｄｉｖｅｒｓｉｔｙ Ｆｏｒ Ｃｈｉｐ−Ｌｅｖｅｌ Ｅｑｕａｌｉｚａｔｉｏｎ ｏｎ ＣＤＭＡ Ｄｏｗｎｌｉｎｋ", Ｓｅｎｓｏｒ Ａｒｒａｙ ａｎｄ Ｍｕｌｔｉｃｈａｎｎｅｌ Ｓｉｇｎａｌ Ｐｒｏｃｅｓｓｉｎｇ Ｗｏｒｋｓｈｏｐ． ２０００． Ｐｒｏｃｅｅｄｉｎｇｓ ｏｆ ｔｈｅ ２０００ ＩＥＥＥ, 2000, ｐｐ．４７−５１
JPN6010006564, Ｂｏｊａｎ Ｖｒｃｅｌｊ ｅｔ ａｌ．, "Ｉｍｐｒｏｖｅｍｅｎｔｓ ｉｎ ｅｑｕａｌｉｚａｔｉｏｎ ｏｆ ｍｕｌｔｉｕｓｅｒ ＣＤＭＡ ｓｙｓｔｅｍｓ： ｏｖｅｒｓａｍｐｌｉｎｇ ａｎｄ ｎｏｎｕｎｉｑｕｅｎｅｓｓ", Ｓｉｇｎａｌｓ， Ｓｙｓｔｅｍｓ ａｎｄ Ｃｏｍｐｕｔｅｒｓ， ２００３． Ｃｏｎｆｅｒｅｎｃｅ Ｒｅｃｏｒｄ ｏｆ ｔｈｅ Ｔｈｉｒｔｙ−Ｓｅｖｅｎｔｈ Ａｓｉｌｏｍａｒ Ｃｏｎｆｅｒｅｎｃｅ ｏｎ, 200311, Ｖｏｌ．１, ｐｐ．４５４−４５８
JPN6010006566, 鈴木 博 外２名, "ＤＳ−ＣＤＭＡパケット移動通信システムにおけるアダプティブアレーおよび等化器のチップレベル結合処理", 電子情報通信学会技術研究報告, 20021114, Ｖｏｌ．１０２ Ｎｏ．４６４, ｐｐ．１７−２２
JPN6010006564, Ｂｏｊａｎ Ｖｒｃｅｌｊ ｅｔ ａｌ．, "Ｉｍｐｒｏｖｅｍｅｎｔｓ ｉｎ ｅｑｕａｌｉｚａｔｉｏｎ ｏｆ ｍｕｌｔｉｕｓｅｒ ＣＤＭＡ ｓｙｓｔｅｍｓ： ｏｖｅｒｓａｍｐｌｉｎｇ ａｎｄ ｎｏｎｕｎｉｑｕｅｎｅｓｓ", Ｓｉｇｎａｌｓ， Ｓｙｓｔｅｍｓ ａｎｄ Ｃｏｍｐｕｔｅｒｓ， ２００３． Ｃｏｎｆｅｒｅｎｃｅ Ｒｅｃｏｒｄ ｏｆ ｔｈｅ Ｔｈｉｒｔｙ−Ｓｅｖｅｎｔｈ Ａｓｉｌｏｍａｒ Ｃｏｎｆｅｒｅｎｃｅ ｏｎ, 200311, Ｖｏｌ．１, ｐｐ．４５４−４５８
JPN6010006566, 鈴木 博 外２名, "ＤＳ−ＣＤＭＡパケット移動通信システムにおけるアダプティブアレーおよび等化器のチップレベル結合処理", 電子情報通信学会技術研究報告, 20021114, Ｖｏｌ．１０２ Ｎｏ．４６４, ｐｐ．１７−２２
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe