Performance Analysis of OFDM Signal Using BPSK and QPSK Modulation Techniques

摘要

High data -rate is desirable in many recent wireless multimedia applications. Traditional single carrier modulation techniques can achieve only limited data rates due to the restrictions imposed by the multipath effect of wireless channel and the receiver complexity. Orthogonal Frequency Division Multiplexing (OFDM) is a potential candidate to fulfill the requirements of current and next generation wireless communication systems. However, Peak-to-Average Ratio (PAPR) and Intercarrier Interference (ICI) a re two major challenges in implementing an OFDM system. In OFDM systems use cyclic prefix insertion to eliminate the effect of ISI. In this paper we represent the OFDM signal generation technology using two different modulation techniques step by step and compared them. Here, we also analysis the PAPR performances of two OFDM signals which are generated by using two modulation techniques.