Author(s): Kamal A. Patel, Prof. Tejas S. Patel
Published in: International Journal of Engineering Research & Technology
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Volume/Issue: Vol.1 - Issue 3 ( May- 2012)
In direct Sequence spread spectrum transmission, the user data is multiplied by a binary code sequence. And the receiver side, the coded signal is again multiplied by same code sequence to get original signal back. Multi-Carrier Code Division Multiple Access (MC-CDMA) is a multiple access scheme used in OFDM-based telecommunication systems, allowing the system to support multiple users at the same time. MC-CDMA system is orthogonal communication scheme. DS-CDMA system is on type of simple CDMA system. MC- CDMA is combination of OFDM and DS-CDMA. The performance measure is based on Rayleigh Fading Channel. The bit error rate performance of MC-CDMA and DS-CDMA systems with Minimum Mean Square Error (MMSE) detection are carried out by MATLAB simulation. This paper represents BER performance for DS-CDMA and MC-CDMA systems and find out which CDMA system is good for communication among DS-CDMA and MC- CDMA. This paper also presents that what effect on BER, if no of bits per user is increased, if no of data sub-carriers increased and if no of users increased.
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