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Evaluate the PAPR and BER Performance of SCFDMA with NCT Technique


Author : Shailendra Kumar Dwivedi, Rajeev Paulus, A.K.Jaiswal and Anil Kumar

Pages : 1000-1003
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Abstract

Orthogonal frequency division multiplexing (OFDM) is a most efficient and well-known modulation technique for transmission of digital data with high data rate. It is a multicarrier modulation technique where a high data rate signal is divided in to the number of lower data rate signal and these lower data rate signal are placed on the different sub bands where each lower data rate signal is modulated through an individual sub carriers so by combining all modulated signal we get the OFDM transmitted signal. It is most effective technique for overcome the problem of multipath fading, immunity to delay spread Increasing signal to noise ratio (SNR) with negligible Inter carrier interference (ICI) and Inter symbol interference (ISI).High peak to average power ratio(PAPR) is main problem with OFDM that degrade the performance of system. There are various techniques has been demonstrated to reduce PAPR like signal scrambling or signal distortion technique and also improving the bit error rate of the system. In this paper, we have evaluated the PAPR and BER performance of single carrier frequency division multiplexing (SC-FDMA) with nonlinear companding technique.

Keywords: Orthogonal frequency division multiplexing, Peak to average power ratio, SCFDMA, NCT.

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.2 (April- 2014)

 

 

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