RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD

Japanese Patent JP2006279590

A

To realize highly accurate likelihood estimation and to suppress the performance degradation of the entire receiver in a MIMO receiver using MMSE.

In the MIMO receiver, not only an antenna weight matrix W but also a noise power estimated value σr2 used for MMSE processing (that is, the estimated value of noise power included in reception signals before spatial decoding) and an estimated channel matrix are used, the noise power, signal power and interference power in respective stream signals after the spatial decoding are respectively directly estimated, and SINR is obtained by the estimated values. Thus, likelihood amplitude information composed of the square root is utilized for soft judgement processing as highly accurate likelihood information.

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KURODA SHINICHI

JP2005096352A

October 12, 2006

March 29, 2005

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SONY CORP

H04J99/00; H03M13/47; H04B7/04; H04B7/10; H04J11/00

JP2005341131A	2005-12-08
JP2002247011A	2002-08-30
JP2007074617A	2007-03-22
JP2005341131A	2005-12-08
JP2002247011A	2002-08-30
JP2007074617A	2007-03-22

JPN6010033167, 原田　啓介　外３名, "地上伝送路特性を考慮した誤り制御", １９９８年映像情報メディア学会年次大会講演予稿集, 19981029, ｐｐ．３１−３２, 社団法人映像情報メディア学会
JPN6010033170, Ｔｏｍｏａｋｉ　Ｏｈｔｓｕｋｉ　ｅｔ．ａｌ, "Ｃｏｍｐｕｔａｔｉｏｎａｌ　Ｃｏｍｐｌｅｘｉｔｙ　Ｒｅｄｕｃｔｉｏｎ　ｏｆ　ＭＬＤ　Ｂａｓｅｄ　ｏｎ　ＳＩＮＲ　ｉｎ　ＭＩＭＯ　Ｓｐａｔｉａｌ　Ｍｕｌｔｉｐｌｅｘｉｎｇ　Ｓｙｓｔｅｍｓ", Ｖｅｈｉｃｕｌａｒ　Ｔｅｃｈｎｏｌｏｇｙ　Ｃｏｎｆｅｒｅｎｃｅ，　２００４．　ＶＴＣ−Ｆａｌｌ．　２００４．, 20040929, Ｖｏｌ．２, ｐｐ．１４２６−１４３０, ＩＥＥＥ

Masaaki Miyata
Eiji Yamada
Toshio Sawada

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