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BER comparison of DCT-OFDM and DFT-OFDM for different modulation techniques in multipath Rayleigh fading environment

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4 Author(s)
Patidar, L.C. ; Dept. of Electron. & Commun. Eng., MIT Mandsaur, Mandsaur, India ; Parikh, A. ; Patidar, R.D. ; Joshi, A.

In wireless communication Orthogonal Frequency Division Multiplexing is gaining its importance as it is suitable for high speed data rates. It is a multi carrier system, which is commonly implemented for transmission of signals nowadays. In this system, orthogonally placed sub-carriers are used to carry data from transmitter end to receiver end. In this paper, Bit Error Rate comparison of Discrete Fourier Transform-based Orthogonal Frequency Division Multiplexing is compared with Discrete Cosine Transform-based Orthogonal Frequency Division Multiplexing for different modulation techniques over Multipath Rayleigh Fading Channel. It is observed from results that, Bit Error Rate shift in case of Discrete Cosine Transform-based Orthogonal Frequency Division Multiplexing is less then compared to Bit Error Rate shift in case of Discrete Fourier Transform-based Orthogonal Frequency Division Multiplexing system and Quadrature Amplitude Modulation shows better performance as compared to Phase Shift Keying for higher constellation index.

Published in:

Engineering and Systems (SCES), 2012 Students Conference on

Date of Conference:

16-18 March 2012