莱斯衰落信道的K值估计与测量

Estimation and Measurement of K Parameter for Rice Fading Channel

为了估计莱斯衰落信道的参数K值,采用了一种矩估计查找表方法。该方法利用信号包络的1,2阶矩信息对K值进行查找式估计。为了验证该方法的性能,设计了无线信道测量系统来进行莱斯衰落信道的实际测量与估计。测量结果表明,该方法在不显著增加实现复杂度的情况下比常用的2,4阶矩估计方法提供了更为准确的估计结果。该测量系统与估计方法可以应用在实际无线信道测量中。

A moment-based estimator for K parameter of Rice fading distribution is used.Based on the first and the second order moments of the envelope of the signal the look-up table method is presented. The measurement reveals that the estimator offers better performance than that of the conventional second and fourth order moment-based estimator. The system and the estimation method can be used in the real channel measurement.