中文说明：OFDM是
English Description：
OFDM is of great interest by researchers and research laboratories all over the world. It has already been accepted for the new wireless local area network standards IEEE 802.11a, High Performance LAN type 2 (HIPERLAN/2) and Mobile Multimedia Access Communication (MMAC) Systems. Also, it is expected to be used for wireless broadband multimedia communications. For the most part, OFDM is the standard being used throughout the world to achieve high data rates necessary for data intensive applications that must now become routine.However high Peak Average Power Ratio (PAPR) is one of the fundamental problems of an OFDM system. Due to high PAPR the efficiency of the system reduces. In order to overcome the problem of PAPR either a high power amplifier is used