宽子带多载波系统模型及同步偏差分析  

Simulation of wide subband multi-carrier system model and synchronization error analysis

作　　者：吴华[1] 曾凡鑫[2] 

机构地区：[1]重庆大学通信工程学院 [2]重庆通信学院

出　　处：《电子技术应用》2010年第3期100-103,共4页Application of Electronic Technique

基　　金：国家自然科学基金(60872164)资助课题

摘　　要：基于时频分析和多载波通信理论,建立了基于脉冲成型滤波的时频局部化宽子带多载波系统仿真模型,对各种同步偏差给系统带来的影响进行了理论分析和性能仿真。仿真结果表明,系统在归一化频偏0.1以内可以得到较为理想的解调性能,所以只要选取合适的宽子带和成型脉冲,可以有效解决多载波对频偏敏感的问题。Based on time-frequency analysis and multi-carrier communication theory, a time-frequency localized wide subband multi-cartier system simulation model is build, and then we make a theoretical analysis on the effects of synchronization error and simulation. The simulation results show that the system at the normalized frequency offset of O. 1 or less can be more ideal de- modulation performance, So simply select the appropriate bandwidth and pulse shaping can effectively resolve the multi-cartier on the frequency offset sensitive issue.

关 键 词：宽子带多载波 成型脉冲 同步偏差 时频分析 

分 类 号：TN929.5[电子电信—通信与信息系统]