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Performance evaluations and comparisons of several LDPC coded MC-FH-CDMA systems
, Article Scientia Iranica ; Volume 13, Issue 4 , 2006 , Pages 337-347 ; 10263098 (ISSN) ; Haghighat, J ; Nasiri Kenari, M ; Jamali, S. H ; Sharif University of Technology
Sharif University of Technology
2006
Abstract
In this paper, the application of regular Low-Density Parity-Check (LDPC) codes in Multi-Carrier Frequency-Hopping (MC-FH) CDMA systems is studied. To this end, different well-known constructions of regular LDPC codes are considered and the performance of LDPC coded MC-FH-CDMA systems, based on these constructions, are evaluated and compared in a frequency-selective slowly Rayleigh fading channel. These results are compared with those previously reported for super-orthogonal convolutionally coded MC-FH-CDMA systems. The simulation results indicate that the LDPC coded MC-FH-CDMA system significantly outperforms the uncoded and super-orthogonal convolutionally coded schemes. To alleviate the...