Multilevel coding and multistage decoding for M-ary two-dimensional ISI channels

Author

Xiao, Jiaxi ; Karbaschi, Arash ; Adibi, Ali ; McLaughlin, Steven W.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA

fYear

2009

fDate

18-20 March 2009

Firstpage

77

Lastpage

80

Abstract

We propose a computationally efficient scheme to decode two-dimensional (2D) intersymbol interference (ISI) channel with M-ary input. The basic idea is to equalize the channel stage by stage. To begin with the stage with the highest signal power level, the BCJR algorithm is used to equalize each level by averaging the interference of the undecoded levels. Both the hard and soft decisions are passed to the next stages. The scheme hugely reduces the complexity of full-branch BCJR on the entire received page of data and makes the equalization applicable. Based on the statistic output of each stage the overall information rates are evaluated. Furthermore, the coding simulation results are presented. All of these results show the proposed scheme is a good candidate for decoding such M-ary 2D ISI channels.

Keywords

channel coding; decoding; intersymbol interference; statistical analysis; M-ary two-dimensional ISI channel; channel equalization; coding simulation; computational complexity; full-branch BCJR algorithm; intersymbol interference; multilevel coding; multistage decoding; statistical analysis; Holography; Information rates; Intersymbol interference; Iterative algorithms; Iterative decoding; Iterative methods; Power engineering and energy; Power engineering computing; Signal to noise ratio; Statistics; M-ary two-dimensional ISI; multilevel coding; multistage decoding;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Sciences and Systems, 2009. CISS 2009. 43rd Annual Conference on

Conference_Location

Baltimore, MD

Print_ISBN

978-1-4244-2733-8

Electronic_ISBN

978-1-4244-2734-5

Type

conf

DOI

10.1109/CISS.2009.5054694

Filename

5054694