已知发射耦合和空间协方差矩阵的预编码

Jinhui Chen, W. Fang, Fanglei Sun, Peng Shang, J. Wang
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引用次数: 0

摘要

提出了一种利用发射耦合和空间协方差矩阵知识的闭式预编码方案,在发射天线阵列尺寸一定且辐射功率不受放大器输出功率限制的情况下,保证了可达速率随发射天线数量的增加而增加。该预编码方案采用特征值比例功率分配。仿真结果表明,特征值比例功率分配方法的性能接近基于协方差矩阵的充水功率分配方法。对不同方案的能源效率进行了评价和比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Precoding with Known Transmit Coupling and Spatial Covariance Matrices
A closed-form precoding scheme using the knowledge of transmit coupling and spatial covariance matrices is proposed, which ensures that the achievable rate increases with the number of transmit antennas when the size of the transmit antenna array is fixed and the radiated power, but not the amplifier output power, is constrained. Eigenvalue-proportional power allocation is employed in this precoding scheme. Simulation shows that the performance of eigenvalue-proportional power allocation is close to that of covariance matrix based waterfilling power allocation. Energy efficiency of different schemes is evaluated and compared.
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