Abstract:

Aiming at the cooperative communication systems, a threshold-based decoding algorithm was proposed. A method for threshold-settings was given based on the analysis of the probability distribution of equivalent noise. The operation complexity of the proposed algorithm was analyzed theoretically. Both the error rate performance and the operation complexity were then simulated, and compared with existing algorithms. Furthermore, a strategy of dynamic threshold-settings, which was given on the basis of the analyses and simulations above, was applied to the proposed algorithm. The simulation results show that the proposed algorithm based on the dynamic threshold-settings is able to alleviate the cost of decoding resources in low SNR and get the optimal error rate performance in high SNR.

Key words: cooperative communication, threshold-setting, decoding algorithm, performance analysis