Title
A combined soft-decision deinterleaver/decoder for the IS95 reverse link
Abstract
The reverse link encoding steps of the IS95 cellular code-division multiple-access (CDMA) standard consist of convolutional encoding, block interleaving, and orthogonal Walsh function encoding. Deinterleaving individual symbol metrics obtained from the Walsh function matched filters followed by conventional Viterbi decoding produces suboptimal results, as unwanted intersymbol Walsh function correlation is introduced. We propose a combined deinterleaver/decoder with improved performance over existing decoders with little added overhead and no extra decoding delay. Applied to the IS95 reverse link, the proposed decoder has about 1.0-dB gain over soft-decision decoding with interleaved symbol metrics at a bit error rate (BER) of 10-3
Year
DOI
Venue
2000
10.1109/25.832976
Vehicular Technology, IEEE Transactions
Keywords
Field
DocType
Viterbi decoding,Walsh functions,cellular radio,code division multiple access,convolutional codes,error statistics,interleaved codes,matched filters,radio links,BER,CDMA,IS-95 cellular radio standard,Viterbi decoding,bit error rate,block interleaving,code-division multiple-access,combined soft-decision deinterleaver/decoder,convolutional encoding,intersymbol Walsh function correlation,matched filters,orthogonal Walsh function encoding,reverse link,symbol metrics
Convolutional code,Computer science,Electronic engineering,Viterbi decoder,Soft-decision decoder,Decoding methods,Code division multiple access,Walsh function,Interleaving,Bit error rate
Journal
Volume
Issue
ISSN
49
2
0018-9545
Citations 
PageRank 
References 
1
0.39
5
Authors
2
Name
Order
Citations
PageRank
Earnshaw, A.M.110.39
Steven D. Blostein232961.46