时频局部化多载波系统的高效快速算法  

Efficient fast implementation of time frequency localized multicarrier system

作　　者：吴华[1] 曾凡鑫[2] 张振宇[1,2] 朱斌[1] 

机构地区：[1]重庆大学通信工程学院,重庆400044 [2]重庆通信学院,重庆400035

出　　处：《解放军理工大学学报（自然科学版）》2011年第4期312-316,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60872164)

摘　　要：为了降低基于成型脉冲滤波的时频局部化多载波系统的实现难度,提出了一种低复杂度的快速实现算法。首先基于时频分析和多载波通信理论得到发送端和接收端基带系统模型,然后通过数字化和延时处理对模型进行离散因果化,最后利用成型脉冲的有限截断长度和复指数函数的周期性简化离散模型并得到了快速实现算法。该算法具有计算复杂度低、便于灵活实现的优点。仿真结果表明了算法的正确性和有效性。To reduce the implementation complexity of pulse shaping time frequency localized multicarrier system,an efficient fast algorithm was presented.Firstly,the Transceiver＇s baseband system models were introduced based on time-frequency and multicarrier communication theory.Then,a discrete causal model was obtained due to digitized and delayed treatment.Finally,through the utilization of limited pulse truncation length and cyclical nature of complex exponential function,the fast algorithm was developed.Simulation results show the accuracy and effectiveness of the method.

关 键 词：无线通信 成型脉冲 多载波系统 快速算法 

分 类 号：TN929.5[电子电信—通信与信息系统]