IEEE 802.16无线信道快速突发均衡的实现

Implement of a Fast Start-Up Burst Mode Equalizer for 802.16 Channel

针对IEEE 802.16无线信道进行了仿真,提出了一种工作于该信道的16QAM突发模式的快速均衡器算法,该算法采用Neuman-Hoffman序列的扩展序列进行信道快速估计,及用均衡器系数预加载算法以提高收敛速度,仿真结果证明:算法收敛速度优于递归最小二乘算法。

The paper describes a fast start-up equalizer which firstly uses the semi-extended Neuman-Hoffman sequence to estimate the time varying channel impulse response , and then a initial DFE tap value to preload the the equalizer. The performance of the equalizer is confirmed by simulation in the 802.16 channel model, and it is fund that the convergence speed is comparable with the recursive least squares (RLS) adaptive algorithm.