均衡算法在FFH-OFDM系统中的分析与比较

Analyses and comparison of equalization algorithms in FFH-OFDM

快速跳频—正交频分复用(FFH-OFDM)利用多载波调制前的预编码来实现各自信道噪声的混合,噪声的平均取得了误码性能的改善。迫零线形块均衡和最小均方误差线形块均衡是常用的两种均衡算法,分析结果表明,频率选择型信道下,后者可以改进前者在低信噪比条件下的不足,尤其是当信道存在频谱零点时,可以取得更好的误码性能。

In FFH-OFDM hybrid of sub-channels noise is implemented by pre-coding matrix before OFDM. Averaging of noise can improve the system BER performance. There are two types of equalization algorithms which are ZF-BLE and MMSE-BLE. The latter can further improve the error code performance on frequency-selective channels at a low SNR, especially when the channels have spectral nulls.