Probability Density Functions of Reliability Metrics for 16-QAM-Based BICM Transmission in Rayleigh Channel
Paper in proceeding, 2007
In bit interleaved coded modulation (BICM), the probability
density function (PDF) of the reliability metrics (L-values) fully defines the BICM transmission and may be used to analyze it from an information-theoretic point of view. In this paper, the closed-form expressions for the PDF of the L-values in Rayleigh fading channels for 16-QAM with Gray mapping are derived and contrasted with histograms of the L-values obtained via numerical simulations. The obtained closed-forms show that the PDF is either a sum of exponentials or is bounded by such a sum.
Author
Leszek Szczecinski
INRS-Energy, Materials and Telecommunications
Alex Alvarado
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Rodolfo Feick
Universidad Técnica Federico Santa María
IEEE International Conference on Communications ICC 2007
0536-1486 (ISSN)
1012-10171424403537 (ISBN)
Areas of Advance
Information and Communication Technology
Subject Categories
Telecommunications
DOI
10.1109/ICC.2007.172
ISBN
1424403537