Browse by author
Lookup NU author(s): Dr Martin Johnston,
Emeritus Professor Rolando Carrasco
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
Hermitian codes are a class of very long algebraic-geometric (AG) codes constructed from Hermitian curves, which outperform Reed-Solomon codes defined over the same finite fields and with the same code rates, as recently demonstrated by the authors. However, since there are no soft-decision decoding algorithms for AG codes in the literature, the performance of Hermitian codes is limited and their potential is yet to be realized. An alternative method for achieving more significant coding gains is presented in this paper by serially concatenating long Hermitian codes with ring-trellis-coded modulation codes over the ring of integers ℤ4 and evaluating their performance through simulation results on the AWGN and Rayleigh fading channels. The scheme achieves large coding gains over single Hermitian and ReedSolomon codes with no increase in bandwidth use and a performance comparable with the well-known capacity-approaching codes. Copyright © 2007 John Wiley & Sons, Ltd.
Author(s): Johnston M, Carrasco RA
Publication type: Article
Publication status: Published
Journal: International Journal of Communication Systems
Print publication date: 01/04/2008
ISSN (print): 1074-5351
ISSN (electronic): 1099-1131
Publisher: John Wiley & Sons Ltd.
Altmetrics provided by Altmetric