说明：  详细介绍了OFDM工作原理及发展前景，阐述了降低OFDM系统系统峰均比的几种技术，对研究OFDM有很大帮助
(Details of the OFDM principle and the development prospects of work, describes the system PAPR Reduction in OFDM system of several techniques to study OFDM great help)