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

BER IMPROVEMENT IN OFDM SYSTEM USING ADAPTIVE MODULATION AND EQUALIZER

Publication Date : 10/06/2015



Author(s) :

SANDEEP THAKUR , Gaganpreet Kaur.


Volume/Issue :
Volume 2
,
Issue 6
(06 - 2015)



Abstract :

In this paper, an Orthogonal Frequency Division Multiplexing (OFDM) system is modelled with ASTC encoder, equalizers using adaptive modulation. In OFDM system inter carrier interference (ICI) is usually not occur due to the principal of orthogonality, but the inter symbol interference (ISI) problem is removed by adopting linear equalizer i.e. minimum mean square error (MMSE) due to which complexity of receiver is also reduced. In OFDM system PAPR is their due to which complexity of system increase. For reducing PAPR use of ASTC code is very effective, but the PAPR is not eliminated completely. The efficiency of the OFDM spectrum is increased by using adaptive modulation which can use the modulation according to the noise in the channel.


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BER IMPROVEMENT IN OFDM SYSTEM USING ADAPTIVE MODULATION AND EQUALIZER

June 8, 2015