Analysis and Construction of Full-Diversity Joint Network-LDPC Codes for Cooperative Communications

Abstract--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.

• Type: Journal
• Year: 2010
• Where: EJWCN
• Authors: Dieter Duyck, Daniele Capirone, Joseph Jean Boutros, Marc Moeneclaey
• Keywords: Certain Transmission Rate, EJWCN 2010, Maximum Coding Rate, Transmit Diversity