摘要
超宽带信号经多径信道传播会产生严重的时间弥散。采用RAKE接收是提高超宽带接收机性能的重要手段。基于IEEE 802.15.3a信道模型,针对脉冲位置调制(PPM)跳时超宽带信号(TH-UWB)系统,对采用RAKE接收机接收时的单用户系统和多用户系统的性能进行了比较分析,并给出了仿真结果。
Ultra-wide band signals suffer from severe time dispersion in multi-path environment,and RAKE reception is an important way to improve the performance of ultra-wide band receivers.Characteristics of the multi-path channel response of ultra-wide band(UWB) communication system are introduced.Using RAKE reception,system performance is analyzed with the TH-PPM modulation used in the IEEE 802.15.3a channel.Performance of single user and multi-users is compared, and simulation results are given.
出处
《重庆邮电大学学报（自然科学版）》
2008年第z1期20-23,共4页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
