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Journal of Emerging Trends in Computing and Information Sciences >> Call for Papers Vol. 8 No. 3, March 2017

Journal of Emerging Trends in Computing and Information Sciences

Performance Analysis of Two-Layer Spreading scheme based FEC encoded MC–CDMA wireless communication system under implementation of various signal detection schemes

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Author Sohag Sarker, Farhana Enam, Md. Golam Rashed, Shaikh Enayet Ullah
ISSN 2079-8407
On Pages 554-560
Volume No. 3
Issue No. 4
Issue Date April 01, 2012
Publishing Date April 01, 2012
Keywords Multi-carrier code division multiple access (MC-CDMA), two-layer spreading, Bit Error rate (BER), signal detection schemes


Abstract

In this paper, a comprehensive study has been made on the performance evaluation of a two-layer spreading scheme based MC-CDMA wireless communication system. The ½-rated convolutionally encoded system under present study incorporates three linear signal detection techniques (Equalizers) such as Minimum Mean Square Error (MMSE), Zero Forcing (ZF) and Sphere Decoding (SD) under BPSK, DPSK, QPSK and QAM digital modulations. Computer simulation results demonstrate that the proposed system outperforms with BPSK and MMSE as compared to other digital modulations and signal detection schemes. It is noticeable that the system is highly effective to combat inherent interferences under Rayleigh fading channel and the system performance deteriorates with increase in order of digital modulation and noise power as compared to signal power.  

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