tailieunhanh - Báo cáo hóa học: " Research Article Reed-Solomon Turbo Product Codes for Optical Communications: From Code Optimization to Decoder Design"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Reed-Solomon Turbo Product Codes for Optical Communications: From Code Optimization to Decoder Design | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2008 Article ID 658042 14 pages doi 2008 658042 Research Article Reed-Solomon Turbo Product Codes for Optical Communications From Code Optimization to Decoder Design Raphael Le Bidan Camille Leroux Christophe Jego Patrick Adde and Ramesh Pyndiah Institut TELECOM TELECOM Bretagne CNRS Lab-STICC Technopole Brest-Iroise CS 83818 29238 Brest Cedex 3 France Correspondence should be addressed to Raphael Le Bidan Received 31 October 2007 Accepted 22 April 2008 Recommended by Jinhong Yuan Turbo product codes TPCs are an attractive solution to improve link budgets and reduce systems costs by relaxing the requirements on expensive optical devices in high capacity optical transport systems. In this paper we investigate the use of Reed-Solomon RS turbo product codes for 40 Gbps transmission over optical transport networks and 10 Gbps transmission over passive optical networks. An algorithmic study is first performed in order to design RS TPCs that are compatible with the performance requirements imposed by the two applications. Then a novel ultrahigh-speed parallel architecture for turbo decoding of product codes is described. A comparison with binary Bose-Chaudhuri-Hocquenghem BCH TPCs is performed. The results show that high-rate RS TPCs offer a better complexity performance tradeoff than BCH TPCs for low-cost Gbps fiber optic communications. Copyright 2008 Raphael Le Bidan et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The field of channel coding has undergone major advances for the last twenty years. With the invention of turbo codes 1 followed by the rediscovery of low-density paritycheck LDPC codes 2 it is now possible to approach the fundamental .