Title :
Exit charts for iteratively decoded multilevel modulation
Author :
Schreckenbach, Frank ; Bauch, Gerhard
Author_Institution :
Inst. for Commun. Eng. (LNT), Munich Univ. of Technol. (TUM), Munich, Germany
Abstract :
We investigate EXIT charts for the design and analysis of Bit-Interleaved Coded Modulation (BICM) with iterative decoding. Analytical expressions for EXIT functions of convolutional codes and mappings are derived. For the demapper, we show EXIT functions for different channel models and introduce bit-wise EXIT functions and a symbol-wise description. These functions are used in an optimization procedure to find new mappings.
Keywords :
channel coding; convolutional codes; interleaved codes; iterative decoding; modulation coding; optimisation; BICM; bit-interleaved coded multilevel modulation; bit-wise EXIT chart; channel model; convolutional code; extrinsic information transfer chart; iterative decoding; optimization; symbol-wise description; Abstracts;
Conference_Titel :
Signal Processing Conference, 2004 12th European
Conference_Location :
Vienna
Print_ISBN :
978-320-0001-65-7
