空时编码在宽带无线接入系统空中接口中的应用

The Application of Space-Time Coding in Air Interface for Fixed Broadband Wireless Access Systems

近年来 ,空时编码作为一种发送分集技术已引起人们广泛的关注。空时编码技术是一种把发送分集和编码相结合的技术 ,它能在不牺牲带宽的情况下提供好的性能。本文介绍了空时编码及其相关的概念 ,阐述了正交空时分组编码的编解码过程。本文还讨论了空时编码技术在固定宽带无线接入系统空中接口部分的应用。

In recent years space-time coding has attracted wide attention as a transmit diversity technology. Space-time coding combines TD(transmit diversity) and coding, which provides good performances without requiring any bandwidth expansion. This paper introduces space-time coding and related conceptions, and demonstrates the processes of orthogonal space-time block coding and decoding, This paper also discusses the application of space-time coding in air interface for fixed broadband wireless access systems.