Title :
BER comparison of DCT and FFT based OFDM systems in AWGN and RAYLEIGH fading channels with different modulation schemes
Author :
Mathew, Bini ; George, Peter ; Nathan, Rashmi V. ; Shukkor, Siyana ; Lakshmi, A. Neethu
Author_Institution :
Dept. of Electron. & Commun., Amal Jyothi Coll. of Eng., Kottayam, India
Abstract :
In this paper, we consider DCT based OFDM system and FFT based OFDM system for calculating BER in AWGN and Rayleigh fading channels using BPSK and QPSK as modulating schemes. In addition to this, the BER performance over AWGN and Rayleigh fading channel are compared to estimate their performance. The results indicate that DCT based OFDM system performs better than FFT based OFDM system using BPSK as modulation scheme over AWGN channel. DCT based OFDM system surpass FFT based OFDM system.
Keywords :
AWGN channels; Rayleigh channels; discrete cosine transforms; error statistics; fast Fourier transforms; phase shift keying; AWGN channel; BER performance; BPSK; DCT based OFDM systems; FFT based OFDM systems; Rayleigh fading channels; modulation scheme; modulation schemes; Binary phase shift keying; Bit error rate; Discrete cosine transforms; Fading; OFDM;
Conference_Titel :
Emerging Research Areas and 2013 International Conference on Microelectronics, Communications and Renewable Energy (AICERA/ICMiCR), 2013 Annual International Conference on
Conference_Location :
Kanjirapally
Print_ISBN :
978-1-4673-5150-8
DOI :
10.1109/AICERA-ICMiCR.2013.6576021
