New cooperative frequency domain differential modulation and demodulation  

作　　者：Ke Li Chunping Hou Yonghong Hou Jinlin Fu 

机构地区：[1]School of Electronic and Information Engineering, Tianjin University, Tianjin 300072 P. R. China

出　　处：《Journal of Systems Engineering and Electronics》2011年第6期892-896,共5页系统工程与电子技术（英文版）

基　　金：supported by the National Basic Research Program of China (973 Program) (2007CB310605)

摘　　要：An innovative method of cooperative frequency domain differential modulation and demodulation is presented.This method applies the prior knowledge of channel propagation to selecting the variable differential length and carrying out frequency domain modulation.This strategy optimizes the design of system parameters to effectively improve the anti-interference ability of the differential system in time-varied multipath channel circumstance without making the execution more complicating.The simulations and comparisons demonstrate the proposed method is effective,and the results show that it is especially suitable for the fading channel with strong propagation and fast time-variation.An innovative method of cooperative frequency domain differential modulation and demodulation is presented.This method applies the prior knowledge of channel propagation to selecting the variable differential length and carrying out frequency domain modulation.This strategy optimizes the design of system parameters to effectively improve the anti-interference ability of the differential system in time-varied multipath channel circumstance without making the execution more complicating.The simulations and comparisons demonstrate the proposed method is effective,and the results show that it is especially suitable for the fading channel with strong propagation and fast time-variation.

关 键 词：frequency domain differential demodulation differential length cooperative frequency domain differential. 

分 类 号：TN929[电子电信—通信与信息系统] TN927.2[电子电信—信息与通信工程]