电子器件2012，Vol.35Issue(5)：499-503,5.DOI:10.3969/j.issn.1005-9490.2012.05.003
OFDM中改进的基于循环前缀的ML迭代同步算法
An Improved Iterative ML Synchronization Algorithm Based on Cyclic Prefix in OFDM System
孙文胜 1潘婷婷1
作者信息
- 1. 杭州电子科技大学通信工程学院,杭州310018
- 折叠
摘要
Abstract
This algorithm take multiple OFDM symbols in the same position of consecutive multiple sampling points added each other to compute their average correlation value to improve the estimation accuracy.According to the signal-noise ratio and multi-path delays, the number of cyclic prefixs was dynamicly regulated to reduce in correlation calculation, the length D was proposed as the iteration interval,reducing the complexity of the algorithm.In the four paths fading channel model, the number of subcarriers for 1024, the cyclic prefix for 256, sub-carrier modulation for QPSK, M value for 6, simulation results show that the algorithm in multipath fading channel has good timing and frequency offset estimation performance.关键词
OFDM/同步算法/迭代ML算法/定时和频率偏差Key words
OFDM/ synchronization algorithm/ iterative ML algorithm/ timing and frequency offset分类
信息技术与安全科学引用本文复制引用
孙文胜,潘婷婷..OFDM中改进的基于循环前缀的ML迭代同步算法[J].电子器件,2012,35(5):499-503,5.
