基于UWB时域均衡及天线选择的Rake接收机  

Rake Receiver of the UWB System Based on TD-equalizer and Antenna Selection

作　　者：李平安[1] 陈婷[1] 

机构地区：[1]武汉理工大学信息工程学院,武汉430070

出　　处：《武汉理工大学学报》2007年第11期65-68,共4页Journal of Wuhan University of Technology

基　　金：湖北省自然科学基金(2005ABA224)

摘　　要：超宽带信号在室内环境中将经历密集多径传播,产生严重的时间弥散。联合利用接收天线选择和均衡技术的Rake接收机,能分别抑制多径衰落和符号间干扰(ISI),提高系统容量,节省了射频链路。在802.15.3a信道模型的基础上,针对DS-UWB系统,进行了系统仿真,理论分析和仿真,结果表明这种接收机的性能优于传统的Rake接收机。In indoor environment, UWB signals suffer from dense multi-path propagation and server time dispersion. Rake receiver using receiving antenna selection technology and TD-equalizer technology can resist multi-path fading and inter symbol interference respectively. It also increase capacity of system and reduces the complexity of RF chains. Based on IEEE 802.15.3a channel mode, with the assumption that DS-UWB system is used, we have done the system simulation . The theo- retic analysis and the simulation results present that the performance of the new Rake receiver is better than the traditional Rake receiver.

关 键 词：超宽带 RAKE接收机 MMSE均衡 MMSE天线分集 

分 类 号：TN911[电子电信—通信与信息系统]