Realization of Carrier Interferometry Ofdm for Cooperative Diversity by Wavelet Transform

Abstract

Cooperative diversity has spatial diversity effects on wireless communication systems to combat fading effects by using idle antennas as relays which are already located in the system. OFDM based cooperative communication is widely used in wireless communication systems and promises high data rate. Carrier interferometry codes boost overall performance of OFDM communication systems and decrease the level of PAPR. FFT can be used to realize carrier interferometry with no performance degradation. In this paper a novel design of carrier interferometry OFDM for cooperative diversity is realized using wavelet transform and the performance of the system is analyzed over various relaying strategies and combiners. The results show that, the proposed system which is a novel design of CI-OFDM has obviously better performance than traditional systems in terms of both BER and PAPR with the assist of wavelet transform. © 2020 ACM.