International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 73 - Number 9 |
Year of Publication: 2013 |
Authors: Priyanka Kakkar, Arun Rana |
10.5120/12766-8628 |
Priyanka Kakkar, Arun Rana . SER Performance of M-ary QAM OFDM System under AWGN Channel. International Journal of Computer Applications. 73, 9 ( July 2013), 1-4. DOI=10.5120/12766-8628
OFDM is a multicarrier technique in which modulated data streams are divided into number of parallel substreams which occupies a very less bandwidth. However, full justice was done in proper utilization of bandwidth in OFDM where subcarriers overlap orthogonally. In this paper, the performance analysis of M-ary QAM-OFDM wireless communication systems affected by AWGN in terms of Symbol Error Rate is presented. The MATLAB script based model of the M-ary QAM-OFDM systems with normal AWGN channel is made for study of error performance. Lastly a comparative study of error performance of 64,128 and 256 QAM-OFDM system is made showing the effects of increase in value of M on SER.