Call For Paper Volume:4 Issue:10 Oct'2017 |

Comparative Analysis of BER Performance under QAM-OFDM System Over AWGN and Rayleigh Fading Channel

Publication Date : 31/03/2015



Author(s) :

CHANDRAKANT TIWARI , Mr. ABHISHEK GARG.


Volume/Issue :
Volume 2
,
Issue 3
(03 - 2015)



Abstract :

The fast development of modern communication techniques, the demand for reliable high data rate transmission is  increased signification, which stimulate much interest in  modulation technique. The QAM is one of the adaptive  modulation techniques that are commonly used for wireless  communications. Different order modulations allow sending  more bit per symbol and thus achieving higher throughput or  better SNR are needed to overcome any interference and  maintain a certain BER. This paper at developing a simulink  model to simulate different types of QAM modulation and  demodulation techniques at different bit rates. Orthogonal  Frequency Division Multiplexing (OFDM) was originally  developed from the multi-carrier modulation techniques used in  high frequency military radios. Also we are used Orthogonal  Frequency Division Multiplexing (OFDM) technique with  AWGN channel and Rayleigh channel. Result presented in this  paper the BER tool under Matlab R2013a is used to evaluate the  performance of modulation technique through draw the BER  versus SNR (Eb/N0). Keyword: QAM, OFDM, AWGN, BER, SNR


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Comparative Analysis of BER Performance under QAM-OFDM System Over AWGN and Rayleigh Fading Channel

March 31, 2015