基于最小误码率准则的快速自适应波束成型算法

Fast Adaptive Beamforming Algorithm Based on Minimum Bit Error Rate Criterion

基于最小误码率(MBER)准则的自适应算法,其具有远远优越于传统的最小均方误差(MMSE)准则的性能,但其高复杂度限制了其在实际中的应用。在基于MBER准则的基础上,提出了一种快速自适应波束成型算法,在保证低复杂性的同时,快速收敛于最优MBER解。更重要的是,相对与传统MBER算法,新提出的算法能得到更加优越的波束图,使其更适用于时分双工(TDD)通信系统。

The performance of an adaptive algorithm based on minimum BER （MBER） was superior to the one based the conventional minimum mean square error （MMSE） , but the complexity is the limit on its application. A fast adaptive beamforming algorithms was proposed based on MBER, it had a low complexity and fast converge to the optimal MBER solution. More important, the proposed beamforming algorithm can obtain a better beampattern compared by the conventional MBER, which is very fit to the TDD communications system.