کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4976518 1365647 2008 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new method for performance evaluation of bit decoding algorithms using statistics of the log likelihood ratio
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
A new method for performance evaluation of bit decoding algorithms using statistics of the log likelihood ratio
چکیده انگلیسی
This paper presents a new method for the performance evaluation of bit decoding algorithms. The method is based on estimating the probability density function (pdf) of the bit log likelihood ratio (LLR) by using an exponential model. It is widely known that the pdf of the bit LLR is close to the normal density. The proposed approach takes advantage of this property to present an efficient algorithm for the pdf estimation. The moment matching method is combined with the maximum entropy principle to estimate the underlying parameters. We present a simple method for computing the probabilities of the point estimates for the estimated parameters, as well as for the bit error rate. The corresponding results are used to compute the number of samples that are required for a given precision of the estimated values. It is demonstrated that this method requires significantly fewer samples as compared to the conventional Monte-Carlo simulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Franklin Institute - Volume 345, Issue 1, January 2008, Pages 60-74
نویسندگان
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