BER Analysis with OFDM using PSK/QAM Techniques for Wireless Communication

BER Analysis with OFDM using PSK/QAM  Techniques for Wireless Communication
Authors : Prof. Rajeshwar Lal Dua, Pooja Yadav
Publication Date: 25-09-2012


Author(s):  Prof. Rajeshwar Lal Dua, Pooja Yadav

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol.1 - Issue 7 (September - 2012)

e-ISSN:   2278-0181


Orthogonal frequency division multiplexing (OFDM) now a day is becoming the chosen modulation technique for wireless communication networks. It is only because it can provide large data rates and is sufficiently robust in the face of radio channel impairments. Digital modulation techniques provide sufficient evolution of our mobile wireless communications by increasing the capacity, speed and quality of a wireless networks. In this paper, We concentrate on digital modulation schemes, such as PSK (Phase Shift keying) and QAM (Quadrature Amplitude Modulation) over an additive white Gaussian Noise (AWGN) channel to analyze the performance of an OFDM system in terms of bit error rate (BER). This is evaluated through a computer simulation, the results from which make it clear that, for high-capacity data rate transmission, the QAM modulation is better than the PSK modulation.


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