Volume : V, Issue : XII, December - 2015

Design and Comparison of OFDM, SC–OFDM and MC–CDMA using different modulation techniques (BPSK, QPSK and MKM) for high speed communication

Priyanka Mulchandani, Prof. Sandeep Agrawal

Abstract :

Next generation wireless communication is completely based on Orthogonal Frequency Division Multiplexing (OFDM).There are various benefits of SC–OFDM over traditional OFDM such as Single Carrier OFDM (SC–OFDM) has demonstrated excellent bit error rate (BER) performance, as well as low peak to average power ratio (PAPR). Similar to other multi–carrier transmission technologies although SC–OFDM suffers significant performance degradation resulting from intercarrier interference (ICI) in high mobility environments. Existing techniques for OFDM can be directly adopted in SC–OFDM to improve performance; this improved performance comes at costs such as decreased throughput. In this paper, we analyze the effect of ICI on an SC–OFDM system, traditional OFDM and MCCDMA and compare the BER performance under AWGN channel we also propose a novel modulation scheme. The proposed Magnitude– Keyed Modulation (MKM) modulation provides SC–OFDM system immunity to ICI and with an easy implementation it significantly outperforms OFDM, SC–OFDM and MC–CDMA systems with Phase Shift Keying (PSK) modulation and Quadrature Amplitude Modulation (QAM) in severe ICI environment. Analysis also illustrates the proposed SC–OFDM (MKM modulation ) maintains low PAPR compared to traditional OFDM and SC–OFDM systems with PSK and QAM modulations. Simulation results shows the effectiveness of the proposed system for different modulation schemes in various ICI conditions

Keywords :

Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Priyanka Mulchandani, Prof.Sandeep Agrawal Design and Comparison of Ofdm, Sc-Ofdm and McCdma Using Different Modulation Techniques (Bpsk, Qpsk and Mkm) for High Speed Communication Indian Journal of Applied Research, Vol.5, Issue : 12 December 2015


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