Mutual information analysis of turbo equalizers for fixed and fading channels

Author

Peacock, Matthew J M ; Collings, Iain B.

Author_Institution

Telecommun. Lab., Sydney Univ., NSW, Australia

Volume

4

fYear

2003

fDate

11-15 May 2003

Firstpage

2938

Abstract

The paper considers performance and design issues for turbo equalizers. Analytic expressions are derived for the mutual information convergence point of the turbo equalizer. The BER is then found analytically. Results are obtained for both fixed and fading channels, and in conditions of both perfect channel state information as well as unknown estimated channels. Finally, we introduce design rules for adaptive turbo equalizers based on our analysis. The rules give optimal combinations of pilot rate and code puncturing for a range of fading and SNR conditions.

Keywords

adaptive equalisers; channel estimation; error statistics; fading channels; optimisation; BER prediction; SNR conditions; adaptive turbo equalizers; bit error rate; code puncturing; convergence point; equalizer design rules; fading channels; fixed channels; maximum output mutual information; mutual information analysis; optimization; perfect channel state information; pilot rate; signal-to-noise ratio; Australia; Bit error rate; Channel state information; Convergence; Decoding; Equalizers; Fading; Information analysis; Mutual information; State estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. ICC '03. IEEE International Conference on

Print_ISBN

0-7803-7802-4

Type

conf

DOI

10.1109/ICC.2003.1204577

Filename

1204577