2013/01/28 by Shahrouz Sharifi, Sharifi, Shahrouz, Tolga M. Duman +1
Computer Science · Engineering · #Error Correcting Code Techniques #Advanced Wireless Communication Techniques #Cooperative Communication and Network Coding
paper · pdf · doi:10.48550/arxiv.1301.6643
In this paper, two-user Gaussian interference channel(GIC) is revisited with\nthe objective of developing implementable (explicit) channel codes.\nSpecifically, low density parity check (LDPC) codes are adopted for use over\nthese channels, and their benefits are studied. Different scenarios on the\nlevel of interference are considered. In particular, for strong interference\nchannel examples with binary phase shift keying (BPSK), it is demonstrated that\nrates better than those offered by single user codes with time sharing are\nachievable. Promising results are also observed with quadrature-shift-keying\n(QPSK). Under general interference a Han-Kobayashi coding based scheme is\nemployed splitting the information into public and private parts, and utilizing\nappropriate iterative decoders at the receivers. Using QPSK modulation at the\ntwo transmitters, it is shown that rate points higher than those achievable by\ntime sharing are obtained.\n