Presentation 2004/4/16
A Proposal of Simplified Viterbi Equalizer for 64QAM Signals applied to FWA Systems
Hiroshi YOSHIOKA, Yushi SHIRATO, Kazuji WATANABE,
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Abstract(in English) In this paper, we propose a novel simplified viterbi equalizer for 64QAM signals applied to high symbol rate FWA systems. Reduced complexity and performance improvement are achieved by following two approaches. First one is a reduction of the number of survival paths, taking advantage of a large D/U which is common in LOS (line of sight) communications. Second one is an additional replica making of next candidates to maximum likelihood one. It was confirmed that complexity of proposed viterbi equalizer is reduced without degrading the performance by computer simulations.
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Keyword(in English) 64QAM / FWA / Viterbi Equalizer / Complexity Reduction
Paper # RCS2004-26,CQ2004-26
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Committee CQ
Conference Date 2004/4/16(1days)
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Registration To Communication Quality (CQ)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Proposal of Simplified Viterbi Equalizer for 64QAM Signals applied to FWA Systems
Sub Title (in English)
Keyword(1) 64QAM
Keyword(2) FWA
Keyword(3) Viterbi Equalizer
Keyword(4) Complexity Reduction
1st Author's Name Hiroshi YOSHIOKA
1st Author's Affiliation NTT Access Network Service Systems Laboratories, NTT Corporation()
2nd Author's Name Yushi SHIRATO
2nd Author's Affiliation NTT Access Network Service Systems Laboratories, NTT Corporation
3rd Author's Name Kazuji WATANABE
3rd Author's Affiliation NTT Access Network Service Systems Laboratories, NTT Corporation
Date 2004/4/16
Paper # RCS2004-26,CQ2004-26
Volume (vol) vol.104
Number (no) 22
Page pp.pp.-
#Pages 6
Date of Issue