Performance analysis and code design for differential antenna selection systems

Q. Ma, C. Tepedelenlioğlu
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引用次数: 1

Abstract

Without channel state information (CSI) at the receiver, we study receive antenna selection (AS) for multi-antenna systems that employ differential unitary space-time signals. We perform AS only at the receiver and a subset of receive antennas that have the largest received signal power is chosen. Selecting a single antenna at the receiver, it is proved in Q. Mia and C. Tepedelenlioglu (2005) that with no CSI at the receiver, the diversity gain with AS is preserved for differential unitary space-time codes with full spatial diversity. In this paper, we generalize the performance analysis to the case of selecting more than one antenna at the receiver. As an immediate consequence of performance analysis, based on the derived diversity gain and coding gain expressions, we develop code design principles for the differential ST codes suitable for maximum-power based AS systems. In particular, for 2times2 differential AS systems, we have devised new excellent-performing parametric codes, which outperform known differential codes when AS is employed. Simulation results are presented to validate our analysis and code design
差分天线选择系统的性能分析与代码设计
在接收机没有信道状态信息的情况下,研究了采用差分酉空时信号的多天线系统的接收天线选择问题。我们仅在接收器上执行AS,并选择具有最大接收信号功率的接收天线子集。Q. Mia和C. Tepedelenlioglu(2005)在接收端选择单天线的情况下,证明了在接收端没有CSI的情况下,对于具有全空间分集的差分酉空时码,具有AS的分集增益保持不变。在本文中,我们将性能分析推广到在接收机上选择多个天线的情况。作为性能分析的直接结果,基于衍生的分集增益和编码增益表达式,我们开发了适用于最大功率As系统的差分ST码的代码设计原则。特别是,对于2times2差分AS系统,我们设计了新的性能优异的参数码,当使用AS时,它优于已知的差分码。仿真结果验证了我们的分析和代码设计
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