Maximum likelihood parallel decoding metrics for quasi-orthogonal space-time block codes: derivation and lowpower implementation (無線通信システム)
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概要
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Orthogonal Space-Time Block Codes (STBCs), of which the Alamouti Code is the best known, allow parallel maximum-likelihood (ML) decoding and full diversity. Yet rate-one, orthogonal designs for complex-valued constellations only exist for two-antenna transmitters. Quasi-Orthogonal Space-Time Block Codes overcome this limitation. These codes allow more than two transmit antennas, provide rate-one codes, and can produce full diversity. QOSTBCs are therefore suitable for multi-antenna base-stations serving single-antenna mobile terminals. This paper describes the derivation and low-power digital implementation of parallel metrics for ML decoding of QOSTBCs.
- 一般社団法人電子情報通信学会の論文
- 2009-02-25
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