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文章在传统固定抽头系数信道估计的基础上,提出了一种改进的方法—活动抽头系数信道估计。这种信道估计,运用Akaike信息准则,寻找与实际信道最相符的最佳信道结构模式,而非固定的信道最恶劣条件下的模式结构。这样应用找到的最佳信道模式就可以减少均衡器的状态数目,节约平均处理过程,从而节省资源。并且在在系统误码性能上也有明显提高。
Based on the traditional channel estimation of fixed-tap coefficients, an improved method, activity-tap coefficient channel estimation, is proposed. This channel estimation, using Akaike’s information criterion, looks for the best channel structure pattern that best matches the actual channel, rather than the fixed channel worst case pattern structure. The best channel pattern found in this way can reduce the number of states of the equalizer, save the average process, and save resources. And in the system error performance is also significantly improved.