Performance analysis of PAPR reduction techninques for MC-CDMA system
نویسندگان
چکیده
MC-CDMA and OFDM systems are widely used in the existing 3rd and 4th generation wireless networks. They are also good candidates for the future generation networks for broadband and personal communications. But, high peak to average power ratios (PAPR) is serious problem in MCCDMA which can increase complexity in the analog to digital and digital to analog converter, reduce the system efficiency and increase the overall system cost. The major scope of this paper is to reduce PAPR in MC-CDMA using PTS, SLM and Hybrid techniques. According to the simulation results presented in this paper, using PTS technique, PAPR is reduced up to 2.9 dB than original PAPR of the signal for different number of users and iterations. By analyzing the plots of Complementary Cumulative Distribution Function (CCDF) versus probability (PAPR0), it has been shown that SLM technique lowers PAPR up to 2.2 dB and Hybrid technique is reduced PAPR upto1.5 dB than original PAPR of the signal. .
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