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A New Implementation of a Half-Duplex Decode-and-Forward Cooperative Algorithm Using Complete Complementary Code Sets.

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2 Author(s)
Said E. El-Khamy ; E.E. Dept., Alexandria Univ., Alexandria, Egypt ; Noha O. El-Ganainy

This paper introduces an implementation of a half-duplex decode-and-forward cooperative algorithm using the complete complementary code (CCC) sets. These code sets have an impulsive autocorrelation sum among each set and a cross correlation sum along the set size that vanishes for all shifts. Each user is assigned a set of spreading codes to spread his data and send each of the resulting signals on a different sub-band. The decode-and-forward cooperative procedure is applied and a receiver consisting of parallel branches matched filter followed by a ¿-MRC combiner is used for detection. It is demonstrated that the probability of error performance of the proposed algorithm is very close to the performance of the analytical closed-form probability of error in similar transmission conditions. The algorithm is also compared with a non-cooperative multiband direct-sequence code division multiple access (MB DS-CDMA) algorithm using the complete complementary sets. The simulation results illustrate the enhanced performance of the proposed algorithm under different channel assumptions.

Published in:

2009 3rd International Conference on New Technologies, Mobility and Security

Date of Conference:

20-23 Dec. 2009