Title:
RECEIVER, TRANSMITTER, BASE STATION EQUIPMENT AND MOBILE STATION EQUIPMENT USING THEM
Document Type and Number:
Japanese Patent JP3437411
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve an error rate characteristic by assuming a virtual coder that is a united coder of a line model and a convolution coder and using it to conduct Viterbi decoding thereby conducting MLSE (Maximum Likelihood Sequence Estimator) equalization and Viterbi decoding for convolution codes simultaneously.
SOLUTION: In the data transmitter, a convolution coder 501 codes transmission data 500 in the transmission system and a modulator 502 modulates the coded data and a transmission antenna 503 sends the modulated signal. Furthermore, in a reception system, a reception signal received by a reception antenna 504 is given to a UDMV(United Depoder with MLSE and Viterbi decoder) 505 via a detector to compensate distortion resulting from multi-path fading and to conduct error correction by Viterbi decoding thereby acquiring demodulated data 506. The UDMV 505 are a united demodulator between the MLSE and the Viterbi decoder.
Inventors:
Mitsuru Uesugi
Osamu Kato
Osamu Kato
Application Number:
JP14723297A
Publication Date:
August 18, 2003
Filing Date:
May 20, 1997
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04B7/005; H04B7/26; H04L1/00; H04L25/03; (IPC1-7): H04B7/005; H04B7/26
Domestic Patent References:
| JP3284021A | ||||
| JP479615A |
Other References:
【文献】五十嵐 秀樹 外3名 ,遅延検波を用いた軟判定出力適応等化器の一検討,電子情報通信学会通信ソサイエティ大会,日本,社団法人 電子情報通信学会,1996年 9月 9日,講演論文集1,423,B-422
Attorney, Agent or Firm:
Koichi Washida