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文中对工作在多径有噪信道内的DS-UWB通信系统进行了分析,为DS-UWB通信系统的进一步研究提供理论参考。通过分析DS-UWB通信系统接收信号组成,给出多径分量引起干扰值的统计表示。得到了扩频码正交性保持情况下系统误码率的理论公式,并结合IEEEUWB信道模型进行了Matlab仿真。仿真结果显示,该理论公式能较好地反映影响DS-UWB通信系统误码率的各种因素,分析结果与实际情况基本吻合。
In this paper, DS-UWB communication system working in multipath and noisy channel is analyzed, providing theoretical reference for further research of DS-UWB communication system. By analyzing the received signals of DS-UWB communication system, the statistical expression of the interference values caused by multipath components is given. The theoretical formula of systematic bit error rate (BER) under the condition of orthogonality of spreading code is obtained, and the Matlab simulation is carried out based on IEEEUWB channel model. The simulation results show that the theoretical formula can well reflect various factors that affect the bit error rate of the DS-UWB communication system, and the analysis results are in good agreement with the actual situation.