Code optimization with serially concatenated trellis coded modulation on a fading channel

Author

Nysæter, Asgeir

Author_Institution

Graduate Center, UniK-Univ., Kjeller, Norway

Volume

1

fYear

2005

fDate

30 May-1 June 2005

Firstpage

654

Abstract

Using irregular, bit geometrically uniform, and recursive rate 1 inner encoders with 8-PSK Gray mapping, the iterative decoding convergence threshold signal-to-noise ratio (SNR) is minimized for an independently fading Rayleigh channel with perfect channel state information. Further low SNR optimization is obtained by searching for code combinations with maximum slope of the active burst distance, using outer codes with maximum free distance. The convergence threshold and bit error rate estimates are shown for the best found code combinations.

Keywords

Rayleigh channels; concatenated codes; convergence of numerical methods; error statistics; iterative decoding; minimisation; parameter estimation; phase shift keying; trellis coded modulation; BER estimation; Gray mapping; PSK; Rayleigh channel; active burst distance; bit error rate estimation; code optimization; convergence threshold SNR minimization; convergence threshold signal-to-noise ratio minimization; fading channel; iterative decoding; maximum free distance; perfect channel state information; serially concatenated trellis coded modulation; Bit error rate; Channel state information; Concatenated codes; Convergence; Fading; Iterative decoding; Modulation coding; Rayleigh channels; Signal mapping; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st

ISSN

1550-2252

Print_ISBN

0-7803-8887-9

Type

conf

DOI

10.1109/VETECS.2005.1543373

Filename

1543373