【作者】 郝楠； 余宁梅；

【Author】 Hao Nan, Yu Ning-mei (School of Automation and Information Engineering, Xi’an University Of Technology, Shaanxi, Xi’an ,710048,China)

【机构】 西安理工大学自动化与信息工程学院；

【摘要】 针对Rice和Rayleigh两种基本的信号传输多径分布情况,基于传统窄带无线通信技术,对超宽带Rake 接收机进行理论推导,推导并验证了一个评估传统的MRC合并方式BER性能的表达式模型,并对几种Rake合并方式、Rake接收机的复杂度对系统性能的影响进行了分析及仿真试验,最终得出UWB系统使用现有的接收机合并模式、特别在NL(?)S(CM2)信道环境中,不需要进行复杂的信道估计的结论。更多还原

【Abstract】 This paper mainly related to Rice & Rayleigh environments that are the two basic signal multipath transmission and based on the traditional narrowband communication technology to theoretical derived the UWB Rake receiver, then derived and examined an expression for evaluation of the traditional BER performance of the MRC mode. Analyzed two combination mode (MRC and EGC) and the influence of complexity of Rake receiver to the system. The simulation results show that the UWB system use the existing combination mode do not need channel estimation, especially in NLOS channels.更多还原