Log-likelihood ratio (LLR) conversion schemes in orthogonal code hopping multiplexing

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Log-likelihood ratio (LLR) conversion schemes are proposed to reduce the effect of perforations that occur in orthogonal code hopping multiplexing (OCHM), which was previously proposed to accommodate more downlink channels than the number of orthogonal codewords. The proposed LLR conversion schemes greatly reduce the required signal-to-noise ratio (SNR) in channel decoding even when the perforation probability is high. The performance of the proposed schemes is evaluated by simulation in terms of the required E-b/N-0 for a 1% block error rate.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2003-03
Language
English
Article Type
Article
Keywords

TURBO

Citation

IEEE COMMUNICATIONS LETTERS, v.7, no.3, pp.104 - 106

ISSN
1089-7798
URI
http://hdl.handle.net/10203/85338
Appears in Collection
EE-Journal Papers(저널논문)
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