Effect of antenna separation on the capacity of BLAST in correlated channels
Effect of antenna separation on the capacity of BLAST in correlated channels
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DOI：
10.1109/4234.892194
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发表时间：
2000-11
期刊：
影响因子：
--
通讯作者：
D. Chizhik;F. Rashid-Farrokhi;J. Ling;A. Lozano
中科院分区：
文献类型：
--
作者：
D. Chizhik;F. Rashid-Farrokhi;J. Ling;A. Lozano
由于基站通常处于局部杂波上方，入射到基站上的角频谱较窄，导致基站天线信号之间存在相关性，降低了多个发射和接收天线系统的容量。本文推导了接收天线和发射天线之间存在相关性时链路容量的一般表达式。研究发现，在双极化天线的线性基阵中，在最近邻之间的天线间隔为4个波长，可以达到不相关天线情况下所能达到的80%的容量。
As the base station is usually placed above local clutter, the angular spectrum incident on the base is narrow, inducing correlation among base antenna signals, which reduces the capacity of a multiple transmit and receive antenna systems. In this work the general expression for link capacity is derived, when there is correlation among receive antennas and among transmit antennas. It is found that an antenna separation of 4 wavelengths between nearest neighbors in a linear base array of dually polarized antennas allows one to achieve 80% of the capacity attainable in the uncorrelated antenna case.