Rake接收机基带实现方案和多径分量相位差估计方法  

An Implementation Scheme for Rake Receiver in Base Band and Phase Difference Estimation of Multi-Path Signals

作　　者：贾向东[1,2] 傅海阳[1] 杨龙祥[1] 

机构地区：[1]南京邮电大学宽带无线通信与传感网技术教育部重点实验室,南京210003 [2]西北师范大学数学与信息科学学院,兰州730070

出　　处：《北京邮电大学学报》2011年第4期97-100,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家重点基础研究发展计划项目(2007CB310607);国家自然科学基金项目(61071090);江苏省研究生创新计划项目(CX10B_184Z)

摘　　要：利用Rake接收机多径分量相位估计方法和非相干解调损失因子基带消除技术,提出了Rake接收机多径非相干解调基带实现方案.提出了相位估计方法,不仅可以在基带上消除非相干解调损失因子的影响,而且也可以用于在射频上实现真正的相干解调.性能分析结果表明,该Rake接收机基带实现方案可行.The estimation method of phase difference between multi-path signals and the elimination technique of loss factor caused by non-coherent demodulation are investigated firstly. With the phase difference estimation method, a non-coherent demodulation Rake receiver implementation scheme is proposed, in which the loss factor caused by non-coherent demodulation is eliminated in base band. By using the presented estimation method of phase difference, we can not only eliminate the impact of the loss factor in base band, but also realize the perfect coherent demodulation in radio frequency. The performance analysis shows that the presented scheme is effective.

关 键 词：RAKE接收机 相位估计 非相干解调 基带方案 

分 类 号：TN929.53[电子电信—通信与信息系统]