Quantization for Soft-Output Demodulators in Bit-Interleaved Coded Modulation Systems

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We study quantization of log-likelihood ratios (LLR) in bit-interleaved coded modulation (BICM) systems in terms of an equivalent discrete channel. We propose to design the quantizer such that the quantizer outputs become equiprobable. We investigate semi-analytically and numerically the ergodic and outage capacity over single- and multiple-antenna channels for different quantizers. Finally, we show bit error rate simulations for BICM systems with LLR quantization using a rate 1/2 low-density parity-check code.
to be published at ISIT-2009

Keywords

Information Theory

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/229428

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0905.0606
 http://arxiv.org/abs/0905.0606

Collections

arXiv