论文部分内容阅读
在水声通信中,由于其环境复杂,噪声高、多途效应严重、信道带宽窄、信号起伏衰落严重等不利因素使得水声通信系统接收端产生严重的码间干扰,本文针对实验采集到的实际信号,利用传统LMS判决反馈均衡器及NLMS判决反馈均衡器对信号进行均衡处理,接受信号误码率由42.6%大幅降低,满足系统处理要求,相较于传统Ims判决反馈均衡器,NLMS判决反馈均衡器在收敛速度及误码稳态上都有大幅提高。
In underwater acoustic communication, because of its complex environment, high noise, serious multipath effect, narrow channel bandwidth, severe signal fluctuation and other unfavorable factors, serious interference of intersymbol interference (ISI) occurs on the receiving side of underwater acoustic communication system. In this paper, The actual signal is processed by using the traditional LMS decision feedback equalizer and NLMS decision feedback equalizer to balance the signal. The bit error rate of the received signal is greatly reduced from 42.6% to meet the system processing requirements. Compared with the traditional Ims decision feedback equalizer, the NLMS decision Feedback equalizer has a substantial increase in convergence rate and error-rate steady state.