摘要
1980年后,通信的舞台迎来了OFDM系统,高速Modem和数字移动通信也逐渐应用OFDM系统。1990年后,OFDM技术作为常用技术在广播信道中宽带数据通信、高清晰度数字电视(HDTV)和无线局域网(WLAN)三个方面中。OFDM系统的性能增强是中心环节,论文从OFDM系统的基本原理开始,分析了其OFDM系统加入时间同步、信道估计、降低均峰值比等方向的不同算法和不同状态下体现出的不同性能,从而使使OFDM系统的性能继续提升。
After 1980, OFDM system came to the stage of communication, and OFDM system was gradually applied in high-speed MODEM and digital mobile communication.After 1990, OFDM technology as a common technology in the broadcast channel broadband data communication, high definition digital television(HDTV) and wireless local area network(WLAN) three aspects.The performance enhancement of OFDM system is the central link. Starting from the basic principle of OFDM system, this paper analyzes the different performances of OFDM system under different algorithms and different states in the direction of time synchronization, channel estimation and reduction of average peak ratio, so as to improve the performance of OFDM system.
出处
《长江信息通信》
2021年第4期50-53,共4页
Changjiang Information & Communications
关键词
OFDM系统
时间同步
峰均值比
信道估计
性能增强
OFDM system
time synchronization
peak-to-mean ratio
channel estimation
performance enhancement
