OFDM技术的模拟研究

Research on simulation of OFDM technology

正交频分复用技术是实现高速数据传输的一种有效手段,具有高频谱效率,高数据传输,强大的抗多径能力等优点,已经成为4G的核心技术。文章着重介绍了一些相关技术的发展背景和基本原理,着重讲解了基于导频信号的OFDM系统的导频信道估计算法,文章主要对梳状导频插入的LS算法、LMMSE算法进行重点研究分析。

Orthogonal frequency division multiplexing technology is an effective means to realize high speed data transmission,which has high spectral efficiency,high data transmission,and strong capability to anti multipath and other advantages,and it has become the core technology of 4G.This paper emphatically introduces the development background and basic principle of some related technology,focusing on the estimation of the pilot OFDM system channel pilot signal based on the comb type pilots least squares estimation algorithm,linear minimum mean square error estimation algorithm are studied and analyzed.