一种基于PPM与PAM并行方式的超宽带调制技术  

Modulation Technique of UWB Based on PPM and PAM

作　　者：武晓东[1] 李莉[1] 黄立辉[1] 陈守坤[1] 

机构地区：[1]上海师范大学信息与机电工程学院,上海200234

出　　处：《现代电子技术》2010年第14期117-120,共4页Modern Electronics Technique

摘　　要：为了实现UWB高速无线传输,结合PPM和PAM的特点提出了脉冲位置幅度调制(PPAM)技术,通过对信号的相位和幅度特性进行相关融合产生PPAM调制信号,并采取相关判决准则进行最佳接收,最后对几种调制信号的波形特征及系统的误码率性能进行仿真对比。结果表明,在同一信噪比下,该调制方式的系统误码率性能要优于传统的调制系统,理论上也提高了信息的传输速率,并降低了系统的复杂度。In order to achieve high-speed UWB wireless transmission, a new modulation technique named pulse position amplitude modulation（PPAM）is presented based on the characteristics of PPM and PAM. The PPAM modulation signal was generated by syncretizing the phase and amplitude of the signal, the best reception was gained by the relevant judging criteri- on, and the waveform feature of the modulation signal and the BER performance of the system were compared and simulated. The simulation results show that the BER performance of this system is superior to the conventional modulation, the trans- mission rate of information is improved and the complexity of the system is reduced.

关 键 词：PPAM调制 跳时超宽带 最佳接收 系统复杂度 

分 类 号：TN911.3[电子电信—通信与信息系统]