Title :
Application of Cumulant Method In Performance Evaluation of Turbo-Like Codes
Author :
Abedi, Ali ; Thompson, Mary E. ; Khandani, Amir K.
Author_Institution :
Maine Univ., Orono
Abstract :
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.
Keywords :
computational complexity; higher order statistics; maximum likelihood estimation; probability; turbo codes; bit log-likelihood-ratio; cumulant matching method; cumulant method; higher order statistics; probability density function estimation; turbo-like code performance evaluation; AWGN; Additive white noise; Communication systems; Digital communication; Error analysis; Frequency estimation; Higher order statistics; Parameter estimation; Probability density function; Quadrature amplitude modulation; Channel coding; communication system performance; error analysis; gaussian channels; higher order statistics;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2007.908506
