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机构地区:[1]浙江林学院,浙江临安311300
出 处:《现代电子技术》2008年第9期21-23,共3页Modern Electronics Technique
摘 要:TR-UWB系统采用自相关接收检测技术作为一种非最优接收机,其结构简单、性能优良。对TR-UWB系统的自相关接收检测技术进行改进,通过合并有限数目多径信号以提高接收信号能量,同时对接收信号做平均处理抑制噪声,从而提高系统性能。采用高斯近似法得到系统的误码率,最后在多径信道环境下进行仿真,验证了接收机性能的改进和误码率分析的正确。TR-UWB system uses Autocorrelation Receiver (AcR) as a suboptimal receiver for its simple structure and good performance. To improve the performance of the AcR,a limited number of multipath is combined and the received signal is averaged to suppress the noise. By using the Gaussian approximation, the BER of the improved AcR is obtained. Finally,a simulation is carried out under the multipath channel. According to the results, it is demonstrated that the performance improvement of the receiver and the correction of the BER analysis.
分 类 号:TN914.53[电子电信—通信与信息系统]
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