摘要
超宽带信号在无线信道中传播会产生严重的衰落和多径干扰等问题,而在抗多径干扰方面采用Rake接收机的方式是一种行之有效的手段。利用IEEE802.15.3a标准信道模型,采用TH-PPM调制方式对信道冲激响应的特性进行了分析,并对标准信道模型下的A-Rake,P-Rake和S-Rake三种接收机模型在不同的支路下的BER进行了对比分析。从仿真结果可以得出A-Rake为理想接收机性能最佳,相同支路下S-Rake接收机的性能要优于P-Rake接收机,但是随着支路数的增加两者的性能差距也越来越小。
When UWB signal transfer in the channel. It will take along with the serious multipath to the reception of UWB. It＇s a better way to low of multipath disturb with Rake receiver in ultra wide band radio system. Based on the Intel model of IEEE802.15. SG3a group. Using of Time - Hopping Pulse Position Modulation（TH - PPM）. The paper analyses A - Rake, P - Rake and S - Rake receiver modle under the Intel model. The results indicate that the A - Rake is the best of receiver and the S - Rake receiver is better than the P - Rake receiver but with the increasing of figner the difference of performance between S - Rake and P - Rake will he reduced.
出处
《现代电子技术》
2008年第3期81-83,共3页
Modern Electronics Technique
