本文为加拿大蒙特利尔大学（作者：ALI JEMMALI）的博士论文，共119页。
本文研究了LTE网络环境下MIMO无线系统性能的分析和数值评估。更具体地，我们考虑基于OFDM-MIMO无线接口的物理层。作为第一步，我们对LTE规范采用的两种空时码，即SFBC 2×1和FSTD 4×2码的误码率随信噪比变化的函数进行了理论分析。给出了无空间相关性瑞利信道传输的解析表达式，并采用蒙特卡罗模拟仿真进行了比较。第二步，我们考虑通过在瑞利衰落信道上使用这些编码获得的信道容量。结果表明，仿真得到的吞吐量几乎达到容量极限。作为一个不同的研究主题，本文还考虑了基于天线选择的MIMO系统。通过使用次序统计量，我们在没有天线相关性的瑞利信道上推导了误码率的解析表达式。为了验证我们的数值结果，开发了一种在接收机上实现天线选择的算法，并在仿真中得到了应用。最后，天线相关性的影响是通过使用发送和接收MIMO的两个相关矩阵的Kronecker积进行仿真评估的。
This thesis considers both an analysis and a numerical evaluation ofthe performance of MIMO radio systems in the LTE network environment. Morespecifically we consider the physical layer of the OFDM-MIMO based radiointerface. As a first step we present a theoretical analysis of the bit errorrate of the two space-time codes adopted by the LTE norm, namely the SFBC 2 × 1 and FSTD 4 × 2 codes, as afunction of the signal upon noise ratio. Analytical expressions are given fortransmission over a Rayleigh channel without spatial correlation which are thencompared with Monte-Carlo simulations. As a second step, we consider thecapacity of the channel obtained by using these codes on a Rayleigh fading channel.Results show that simulated throughput almost reaches the capacity limit. As a differenttopic, this thesis considers also MIMO systems based on antenna selection. Byusing order statistics we develop analytical expressions for the error rate ona Rayleigh channel without antenna correlation. In order to validate ournumerical results, an algorithm implementing antenna selection at the receiverhas been developed and used in the simulations. As a last step the effect ofantenna correlation is investigated through the use of simulations and a modelof spatial antenna correlation based on the Kronecker product of twocorrelation matrices related to the transmitting and receiving elements of theMIMO scheme.
1 引言
2 LTE系统的技术回顾
3 LTE系统的MIMO性能评估
4 MIMO系统中的天线选择设计
5 结论
附录A 接收天线相关性的影响
附录B Q函数可替代形式的推导
附录C 可替代Q函数的BER评估
附录D VIENNA LTE链路仿真器
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