Author : Madhvi Jangalwa

This work presents the performance analysis of Weighted Orthogonal Frequency Division Multiplexing (W-OFDM). OFDM has emerged as one of the most widely used multi-carrier nodulation techniques in broadband wireless communication. In which mutually orthogonal sub-carriers are employed to modulate binary data streams. It has efficient bandwidth usage along with high data rates. But one of the major challenges that OFDM suffers from is high value of Peak to Average Power Ratio (PAPR). To reduce PAPR, W-OFDM is an enhancement or variant of traditional OFDM that incorporates a weighting function to improve the performance of the system. Weighted OFDM scheme has gained a lot of attention because it will not affect the BER performance adversely. In this paper PAPR of weighted orthogonal frequency division multiplexing scheme for different modulation techniques is analysed. Results show that weighted OFDM preforms better than the conventional OFDM in terms of PAPR.

Keywords: OFDM, W-OFDM, Sub-carrier, PAPR, BER