Improved quasi-orthogonal codes (original) (raw)

Wireless Communications and Networking, IEEE Conference, 2002

Abstract

Orthogonal codes are a class of space-time block codes that achieve full diversity, though at a loss of code rate. Such codes have simple single-symbol decoders. The code rate can be made higher by constructing quasi-orthogonal codes, which trade a small loss of performance for full rate coding. Typically, quasi-orthogonal codes perform the best when joint maximum likelihood (ML) decoding

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