摘要
提出了一种包含小尺度衰落、相对路径衰落和阴影衰落的室内MIMO信道模型,考虑到室内人员的流动性,并对模型的性能进行了预测,拓展了室内MIMO无线衰落信道模型的研究。实验结果验证了提出模型的性能。得到有用的结论:在低秩的信道,信道容量减少,能合理解释针孔信道容量,在高秩的信道,不考虑相对的路径衰落和阴影衰落的情况下,信道的容量随天线的数目增加和信号相关性的减少而增大。考虑相对的路径衰落和阴影衰落,在LOS传播环境中,若存在丰富的散射传播,信道容量要高得多。
A new model and its performance prediction for multiple input multiple output （MIMO） indoor wireless fading channels, including the effect of small-scale fading, the relative path loss and shadowing fading was presented in this paper. Taking into account the personal flow, the investigation of indoor MIMO wireless channel model was extended. The proposed channel model performance was validated by experimental results. Valuable conclusions were obtained from the study： A reasonable explanation was obtained for the decrease of pinhole channel capacity in low rank channel. Neglecting the relative path loss and shadowing fading, channel capacity increases as the number of antenna increases or the correlation of signal decreases in high rank channel. Moreover, when the relative path loss and shadowing fading are considered, a much higher channel capacity can be obtained in the line-ofsight propagation environment with rich scatters.
出处
《电波科学学报》
EI
CSCD
北大核心
2007年第3期385-389,共5页
Chinese Journal of Radio Science
基金
国家高科技发展计划基金资助项目(2
002AA123
032)
电子科技大学创新团队支持计划资助
关键词
MIMO
信道容量
秩
针孔信道
MIMO, channel capacity, rank, pinhole channel
