摘要
在移动无线通信中,正交频分复用(OFDM)技术具有频带利用率高和抗多径能力强等优点,能提供高速率和高质量的通信服务。介绍了OFDM系统的发展概况,阐述了OFDM系统的基本原理、系统模型和结构,探讨了OFDM技术的优缺点。
In MRC(mobile radio communication),OFDM(orthogonal frequency division multiplexing),which possesses some advantages such as the high-usage of frequency band,and strong anti-multipath capability,etc.,can provide high-speed and high-quality communication services.This paper introduces the general development situation of OFDM system,expounds the basic principles,model and structure of OFDM system,and probes into the advantages and disadvantages of OFDM technology.
出处
《科技情报开发与经济》
2011年第36期93-94,共2页
Sci-Tech Information Development & Economy
关键词
正交频分复用
信噪比
峰均值功率比
OFDM
SNR(signal to noise ratio)
PAPR(peak & average power ratio)