International Journal of Information and Communication Technology Research

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International Journal of Information and Communication Technology Research


Performance of OFDM- CDMA System using Modified Space- Shift Keying Technique

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Author(s) Nelly M. Shafik
On Pages 174-181
Volume No. 2
Issue No. 2
Issue Date February 01, 2012
Publishing Date February 01, 2012
Keywords OFDM, CDMA, MIMO, SSK



Abstract

Many reasons cause multi- carrier CDMA to be the best technology in the latest mobile generations known by fourth generation for mobile. As well known, the greatest enemy for any wireless communication is multi- path fading which usually result in distortion in time- domain, or in frequency domain or even in both. Therefore any new technique applied into mobile communication system is concerning with mitigating multi-path fading distortion which appears in form of reducing BER level. In this paper three techniques have been combined in order to enhance mobile system performance in the presence of multipath fading channel. These techniques are, orthogonal frequency division multiplexing (OFDM), code division multiple access (CDMA), and modified space shift keying (SSK). The last technique is considered special case for MIMO technology. By the aid of MATLAB code, proposes system was simulated in order to display BER performance versus variation in the SNR at many various system conditions.

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2012 IRPN Publishers