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Performance Enhancement of DS-CDMA System using Extended BPSK Modulation Scheme



Barkha Pandey, Raghu Harsh Kalia, Monica Kaushik, Monika Arora


In a last few decades there has been tremendous growth and a drastic rise in wireless communication technologies. The major issue that the world is facing today with the advent of so many sophisticated wireless communication devices is efficient utilization of the spectrum. Spectrum efficiency comes together with a tradeoff factor of energy consumption. Thus, the need of the hour is an energy and bandwidth efficient technique. DS-CDMA is one of the competitive and most investigated technique in wireless communication which caters the large demand at the same time with limited bandwidth. Existing modulation techniques does not promise to provide better performance in case of higher noise. Therefore, one looks for a better BER stipulated modulation format to improve and enhance the performance of the system. This article revisits conventional Binary phase shift keying method and compares its performance in terms of BER with a special Extended Binary Phase Shift Keying (EBPSK) modulation format for a DS- CDMA system. EBPSK scheme is flexible and simple which is easily integrated in a network and assures improved and enhanced performance.


Additive White Gaussian Noise, Bandwidth Efficiency, Binary Phase Shift Keying, Bit Error Rate, Direct Sequence-Code Division Multiple Access, Extended BPSK, Modulation.


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