一种基于空时分组编码的MIMO-SC/FDE系统的接收空间分集方案
A Receive Space Diversity Scheme for MIMO-SC/FDE Systems Based on Space-Time Block Coding
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摘要: 该文提出了一种基于空时分组编码的多输入多输出频域均衡单载波分组传输(MIMO-SC/FDE)系统的空间分集接收方案，通过在Huang(2004)提出的分集结构中引入使用空时分组编码的发射分集，弥补了因减少DFT块数目而造成的性能损失，同时在接收端进一步减少了IDFT块的数目；通过适当设计空时分组编码，还可以进一步提高数据传输速率。该文详细推导了使用空时分组编码后的处理过程，并对使用空时编码后的MIMO-SC/FDE系统和相应的MIMO-OFDM系统性能进行了仿真比较。仿真结果表明，MIMO-SC/FDE系统的性能从总体上优于MIMO-OFDM系统。Abstract: This paper proposes a receive space diversity scheme based on space-time block coding for Single-Carrier block transmission system employing Frequency Domain Equalization (SC/FDE), which can remedy the Huangs (2004) system performance degradation, and can also reduce the number of IDFT blocks. It can further increase data transmission rate through properly designing the space-time codes. A detailed procession for SC/FDE systems using space-time block coding is given, and the performances between the proposed SC/FDE-MIMO system and the MIMO-OFDM system are compared; effective benefits can be shown in the simulations.
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