Construction and capacity analysis of high-rank line-of-sight MIMO channels
Construction and capacity analysis of high-rank line-of-sight MIMO channels
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DOI：
10.1109/wcnc.2005.1424539
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发表时间：
2005-03
期刊：
影响因子：
--
通讯作者：
F. Bøhagen;P. Orten;G. Øien
中科院分区：
文献类型：
--
作者：
F. Bøhagen;P. Orten;G. Øien
本文描述了一种用于在视线（LOS）多输入多输出（MIMO）传输场景中实现高秩信道矩阵的技术。这对于不能利用由独立同分布（i.i.d.）平坦瑞利衰落信道典型应用是固定无线接入和无线电中继系统。该技术是基于均匀线性阵列中的天线位置的优化。通过引入一个新的和更一般的几何模型比应用在早期的作品中，获得额外的洞察到最佳的设计参数。一种新的分析的最优设计参数的灵敏度。的LOS传输矩阵中使用的莱斯衰落信道模型，性能评估方面的遍历容量，中断容量，和有效的自由度。结果表明，即使与最优设计有一些偏差，LOS MIMO情况下的性能优于i.i.d. Rayleigh情况下的香农容量。
This paper describes a technique for realizing a high rank channel matrix in a line-of-sight (LOS) multiple-input-multiple-output (MIMO) transmission scenario. This is beneficial for systems which can not make use of the originally derived MIMO gain given by independent and identically distributed (i.i.d.) flat Rayleigh fading channels. Typical applications are fixed wireless access and radio relay systems. The technique is based on optimization of antenna placement in a uniform linear array. By introducing a new and more general geometrical model than that applied in earlier works, additional insight into the optimal design parameters is gained. A novel analysis of the sensitivity of the optimal design parameters is performed. The LOS transmission matrix is used in a Rician fading channel model, and performance is evaluated with respect to ergodic capacity, outage capacity, and effective degrees of freedom. The results show that even with some deviation from optimal design, the LOS MIMO case outperforms the i.i.d. Rayleigh case in terms of Shannon capacity.