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MI-NLMS adaptive beamforming algorithm for smart antenna system applications

机译:MI-NLMS自适应波束成形算法在智能天线系统中的应用

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A Matrix Inversion Normalized Least Mean Square (MI-NLMS) adaptive beamforming algorithm was developed for smart antenna application. The MI-NLMS which combined the individual good aspects of Sample Matrix Inversion (SMI) and the Normalized Least Mean Square (NLMS) algorithms is described. Simulation results showed that the less complexity MI-NLMS yields 15 dB improvements in interference suppression and 5 dB gain enhancement over LMS algorithm, converges from the initial iteration and achieves 24% BER improvements at cochannel interference equal to 5. For the case of 4-element uniform linear array antenna, MI-NLMS achieved 76% BER reduction over LMS algorithm.
机译:针对智能天线应用,开发了一种矩阵求逆归一化最小均方(MI-NLMS)自适应波束成形算法。描述了结合了样本矩阵求逆(SMI)和归一化最小均方(NLMS)算法的各个方面的MI-NLMS。仿真结果表明,与LMS算法相比,复杂度较低的MI-NLMS在干扰抑制方面提高了15 dB,增益提高了5 dB,从初始迭代开始收敛,并且在等于5的共信道干扰下,BER改善了24%。对于4的情况单元均匀线性阵列天线,与LMS算法相比,MI-NLMS的BER降低了76%。

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