Probability Density Functions of Reliability Metrics for 16-QAM-Based BICM Transmission in Rayleigh Channel

Author

Szczecinski, Leszek ; Alvarado, Alex ; Feick, Rodolfo

Author_Institution

Univ. of Quebec, Montreal

fYear

2007

fDate

24-28 June 2007

Firstpage

1012

Lastpage

1017

Abstract

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.

Keywords

Rayleigh channels; modulation coding; probability; quadrature amplitude modulation; statistical analysis; 16-QAM-based BICM transmission; Rayleigh fading channel; bit interleaved coded modulation; closed-form expression; gray mapping; histogram; probability density function; reliability metrics; Channel capacity; Closed-form solution; Decoding; Fading; Interleaved codes; Modulation coding; Performance analysis; Probability density function; Quadrature amplitude modulation; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2007. ICC '07. IEEE International Conference on

Conference_Location

Glasgow

Print_ISBN

1-4244-0353-7

Type

conf

DOI

10.1109/ICC.2007.172

Filename

4288843