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Maximum Likelihood Parallel Decoding Metrics for Quasi-Orthogonal Space-Time Block Codes: Derivation and Lowpower Implementation

机译:准正交空时分组码的最大似然并行解码指标:推导和低功耗实现

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摘要

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.
机译:正交空时分组码(STBC)(其中Alamouti码最为人所知)允许并行最大似然(ML)解码和全分集。然而,仅针对两天线发射机才存在复数星座的速率一,正交设计。准正交空时分组码克服了这一限制。这些代码允许两个以上的发射天线,提供速率一代码,并且可以产生完全的分集。因此,QOSTBC适用于为单天线移动终端服务的多天线基站。本文介绍了用于QOSTBC的ML解码的并行指标的推导和低功耗数字实现。

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