Performance Enhancement of Mc-ds/cdma System Using Chaotic Spreading Sequence
نویسندگان
چکیده
A novel chaotic spreading sequences for multi-carrier direct sequence code division multiple access (MCDS/CDMA) system is proposed. With this spreading sequence in the MC-DS/CDMA system, the effect of multiple access interference can be mitigated by choosing the spreading sequences with appropriate crosscorrelation properties. The performance of the system is assayed in the multiuser environment by means of simulation. The simulation result shows that the proposed chaotic code spreading approach achieves a significant improvement in the system utility of about nine percent and it is useful in combating multiple access interference (MAI). The studies reveal that the proposed system significantly outperforms the Walsh Hadamard code spreading in MC-DS/CDMA system.
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