Trellis demodulation of two-level Reed-Solomon-modulated FH-CDMA wireless communication systems

Author

Miller, Steven A. ; Kwong, Wing C.

Author_Institution

Dept. of Eng., Hofstra Univ., Hempstead, NY, USA

fYear

2012

fDate

4-4 May 2012

Firstpage

1

Lastpage

6

Abstract

Frequency-hopping code-division multiple access (FH-CDMA) along with coded modulation using Reed-Solomon (RS) codes has recently been proposed for wireless communications to increase data transfer rate. In this paper, an improved method of implementing the modulation and demodulation of the RS codes in RS/FH-CDMA by means of a trellis and the Viterbi algorithm is proposed and analyzed. We study an efficient algorithm for “pruning” the trellis to decrease demodulation errors. Our pruned-trellis method reduces modulation complexity and substantially simplifies the demodulation process. Finally, the performance of this trellis-based RS/FH-CDMA system is analyzed and compared with the old system without trellis.

Keywords

Reed-Solomon codes; code division multiple access; frequency hop communication; trellis coded modulation; FH-CDMA; Viterbi algorithm; coded modulation; frequency-hopping code-division multiple access; modulation complexity reduction; pruned-trellis method; trellis demodulation; two-level Reed-Solomon-modulated FH-CDMA wireless communication systems; Complexity theory; Demodulation; Fading; Generators; Receivers; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Applications and Technology Conference (LISAT), 2012 IEEE Long Island

Conference_Location

Farmingdale, NY

Print_ISBN

978-1-4577-1342-2

Type

conf

DOI

10.1109/LISAT.2012.6223102

Filename

6223102