Báo cáo hóa học: " Research Article Analysis and Construction of Full-Diversity Joint Network-LDPC Codes for Cooperative Communications"

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 Analysis and Construction of Full-Diversity Joint Network-LDPC Codes for Cooperative Communications | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 805216 16 pages doi 2010 805216 Research Article Analysis and Construction of Full-Diversity Joint Network-LDPC Codes for Cooperative Communications Dieter Duyck 1 Daniele Capirone 2 Joseph J. Boutros 3 and Marc Moeneclaey1 1 Department of Telecommunications and Information Processing Ghent University St-Pietersnieuwstraat 41 B-9000 Gent Belgium 2 Department of Electronics Politecnico di Torino Corso Duca Degli Abruzzi 24 10129 Torino Italy 3Electrical Engineering Department Texas A M University at Qatar 23874 Doha Qatar Correspondence should be addressed to Dieter Duyck Received 29 December 2009 Revised 14 April 2010 Accepted 3 June 2010 Academic Editor Christoph Hausl Copyright 2010 Dieter Duyck 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. Transmit diversity is necessary in harsh environments to reduce the required transmit power for achieving a given error performance at a certain transmission rate. In networks cooperative communication is a well-known technique to yield transmit diversity and network coding can increase the spectral efficiency. These two techniques can be combined to achieve a double diversity order for a maximum coding rate Rc 2 3 on the Multiple-Access Relay Channel MARC where two sources share a common relay in their transmission to the destination. However codes have to be carefully designed to obtain the intrinsic diversity offered by the MARC. This paper presents the principles to design a family of full-diversity LDPC codes with maximum rate. Simulation of the word error rate performance of the new proposed family of LDPC codes for the MARC confirms the full diversity. 1. Introduction Multipath propagation small-scale .

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