室内超宽带通信最大似然均衡算法的误码率性能分析

为了分析高速率室内超宽带系统能量收集接收的误码率性能并建立相应的理论分析框架,首先要得到理想的全波形匹配和实际中的部分波形匹配下的最大似然均衡等效信号接收模型,再采用维特比算法来实现最大似然均衡.能量收集通过在接收端进行匹配接收来实现,即采用积分窗口法收集接收信号能量.在维特比算法实现过程中需要合理设计白化滤波器参数.理论推导与仿真结果表明,可以有效消除符号间干扰影响,接近无符号间干扰的性能.该方法在抑制符号间干扰方面切实可行的.

Bit error ratio performance of a maximum likelihood equalization algorithm for an indoor ultra wideband system

To analyze bit error ratio(BER) performance and set up the theoretical analysis frame for energy collection and receival of a high data rate indoor ultra wideband system,the maximum likelihood sequence estimation equalization equivalent signal-receiving models of full waveform matching in ideal situation and partial waveform matching in practical situation were established at first,then the Viterbi algorithm was adopted to implement the maximum likelihood sequence estimation(MLSE) equalization.Energy collection was measured through matching receival at receiving end,which can be regarded as the integral windows method.Whitening filter parameters had to be designed properly to run the Viterbi algorithm,then it was used to obtain the MLSE.Theoretical derivation and computer simulations reveal that this method can effectively eliminate inter-symbol interference,approaching the performance of a non inter-symbol interference system.