文章基本信息

标题：An Approach for increasing SNR with varying data rate in OFDM transmission system
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作者：Chouksey, P. ; Agrawal, P ; Gupta, V 等
期刊名称：International Journal of Electronics Communication and Computer Engineering
印刷版ISSN：2249-071X
电子版ISSN：2278-4209
出版年度：2012
卷号：3
期号：2
页码：387-391
出版社：IJECCE
摘要：OFDM is a multi carrier modulation technique in which the carriers are Orthogonal to each others as a result of which it provides high bandwidth efficiency and multiple carriers share the data among themselves. This paper describes an approach for reduction in BER with increment in SNR and varying the data rates of OFDM transmission system. We present a scheme of basic OFDM transceiver with 32-point QAM and 128 point FFT which reduce the BER when SNR increases in the system. The design unit consist of transmitter and receiver characteristics using 32 QAM and whole system is implemented over MATLAB 7.8.0.
关键词：32-QAM; 128-IFFT FFT; BER; Viterbi detector