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Application of Cumulant Method In Performance Evaluation of Turbo-Like Codes

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3 Author(s)
Abedi, A. ; Maine Univ., Orono ; Thompson, M.E. ; Khandani, A.K.

In this paper, a new method for performance evaluation of turbo-like codes is presented. This is based on estimating the probability density function of the bit log-likelihood-ratio using higher order statistics. We do not restrict ourselves to any specific model for the pdf and try to estimate it directly using a cumulant matching method. Numerical results show a close agreement between the proposed method and the simulations. The complexity of this method is similar to the Monte-Carlo simulation with the advantage of providing similar accuracy using significantly fewer samples.

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Communications, IEEE Transactions on  (Volume:55 ,  Issue: 11 )