| OFDM中一种自适应盲均衡及改进算法 |
| |
| 引用本文： | 陈先福,李有明.OFDM中一种自适应盲均衡及改进算法[J].计算机仿真,2008,25(9). |
| |
| 作者姓名： | 陈先福 李有明 |
| |
| 作者单位： | 宁波大学信息科学与工程学院,浙江宁波,315211 |
| |
| 基金项目： | 浙江省自然科学基金，浙江省宁波市自然科学基金，华为技术公司项目 |
| |
| 摘 要： | 信道均衡在多载波系统中有很重要的应用.研究了OFDM信道自适应盲均衡问题,首先分析了Merry算法,基本思想是如果有效信道长度缩短到循环前缀长度以内,那么接收端符号具有和发送端符号一样的性质.但是Merry算法所构造的代价函数仅考虑了OFDM符号中循环前缀最后一个抽样与该符号最后一个抽样之间的关系.针对问题,构造了一个新的代价函数,利用了OFDM符号循环前缀中所有抽样的信息.文中对新算法进行了仿真验证,仿真结果表明,算法性能上明显要好于Merry算法.
|
| 关 键 词： | 正交频分复用 盲时域信道均衡 循环前缀 |
Blind Adaptive TEQ with Improved Algorithm for OFDM System |
| |
| CHEN Xian-fu,LI You-ming.Blind Adaptive TEQ with Improved Algorithm for OFDM System[J].Computer Simulation,2008,25(9). |
| |
| Authors: | CHEN Xian-fu LI You-ming |
| |
| Affiliation: | CHEN Xian-fu,LI You-ming(College of Information Science , Technology,Ningbo University,Ningbo Zhejiang 315211,China) |
| |
| Abstract: | Time-domain equalization plays a very important role in multi-carrier modulation.This paper exploits the blind adaptive time domain equalization for OFDM channels.Merry blind algorithm is considered.Its basic idea is that the received symbol is the same as the transmitted one if the effective channel is shorter than the cyclic prefix(CP) length.Based on this result,Merry blind algorithm is designed by using the relationship between the last sample in one CP and the last sample in the same OFDM received symb... |
| |
| Keywords: | Orthogonal frequency division multiplexing(OFDM) Blind time domain equalization Cyclic prefix |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
