Transmit diversity and spatial multiplexing in four-transmit-antenna OFDM
Transmit diversity and spatial multiplexing in four-transmit-antenna OFDM
复制标题
四发射天线 OFDM 中的发射分集和空间复用
DOI：
10.1109/icc.2003.1204297
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
K. Gosse
中科院分区：
文献类型：
--
作者：
Xiangyang Zhuang;F. Vook;S. Rouquette;K. Gosse
本文研究了一种在四天线OFDM系统中同时实现空间分集和空间复用的实用设计方案。在一定的频谱效率范围内，建议的混合空时分组码/多输入多输出（STBC/MIMO）的设计被发现是一个很好的设计选择的基础上的性能和接收机的复杂度，相比，只有MIMO或分集的STBC设计。对于混合设计，我们提出了一个简单的接收算法，不需要矩阵求逆。停电容量评估与蒙特卡罗方法是用来提供洞察到基于模拟的比较不同的设计。在仿真中还研究了对缺乏空间可分性信道的鲁棒性。
This paper studies a practical design for achieving both spatial diversity and spatial multiplexing in an OFDM system with four transmit antennas. In a certain range of spectral efficiency, the proposed hybrid space-time block coding/multiple-input multiple-output (STBC/MIMO) design is found to be a good design choice based on performance and receiver complexity, when compared with MIMO-only or diversity-only STBC designs. For the hybrid design, we propose a simple receive algorithm that requires no matrix inversion. Outage capacity evaluated with a Monte Carlo approach is used to provide insight into the simulation-based comparison of the different designs. The robustness to channels that lack spatial separability is also studied in the simulations.