基于载波调制的超宽带系统性能的改善  

Performance improvement of the UWB system based on carrier wave modulation

作　　者：刘敏[1] 颜彪[1] 杨娜[1] 张慧[1] 杨银霞[1] 

机构地区：[1]扬州大学信息工程学院,江苏扬州225009

出　　处：《信息与电子工程》2009年第4期318-320,共3页information and electronic engineering

摘　　要：针对采用部分接收机方法简单但系统性能较弱的特点,将载波应用于跳时(TH)脉冲幅度调制(PAM)超宽带(UWB)系统中,接收端使用Rake接收机,在多径环境下以改善系统的误码性能。对2PAM-TH-UWB系统在接收端的理想接收机、选择接收机及部分接收机性能进行了分析并仿真。仿真结果表明,加入载波后,采用PRake接收机的2PAM-TH-UWB系统性能得到提高,且更接近理想接收机。The using of part receiver makes the system simple but the performance weak. Carrier wave and Rake receivers were applied to the multi-user Binary Pulse Amplitude Modulation（2PAM）-Time Hopping（TH）-Ultra-wide Band（UWB） system, so that the BER performance of the system could be improved in the presence of the multi-path. For the ideal receiver, the choosing receiver and the part receiver of the 2PAM-TH-UWB system, the performance was analyzed and simulated. Numerical results showed that the BER performance of the system with the part receiver could be enhanced after adding carrier wave, which approached to the performance of ideal receiver.

关 键 词：脉冲幅度调制 超宽带 PRake接收机 载波 

分 类 号：TN925[电子电信—通信与信息系统]