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dc.contributor.authorDabirnia, Mehdi
dc.contributor.authorTanç, A. Korhan
dc.contributor.authorSharifi, Shahrouz
dc.contributor.authorDuman, Tolga M.
dc.descriptionThis work was supported in part by the Turkish Scientific and Technological Research Council of Turkey under Grant 114E601, in part by the National Science Foundation under Grant NSF-CCF 1117174, and in part by the European Commission under Grant MC-CIG PCIG12-GA-2012-334213.en_US
dc.description.abstractWe study the design of explicit and implementable codes for the two-user discrete memoryless interference channels (DMICs). We consider Han-Kobayashi (HK) type encoding where both public and private messages are used and propose coding techniques utilizing a serial concatenation of a nonlinear trellis code (NLTC) with an outer low-density parity-check (LDPC) code. Since exact analytical treatment of the BCJR decoder for the inner trellis-based code appears infeasible, we analytically investigate the iterative decoding process in the asymptotic regime where the probability of decoding error tends to zero. Based on this approximate analysis, we derive a stability condition for this type of a concatenated coding scheme for the first time in the literature. Furthermore, we use an extrinsic information transfer analysis to design the outer LDPC code while fixing the inner NLTC, and utilize the derived stability condition to accelerate the design process and to avoid code ensembles that potentially produce high error floors. Via numerical examples, we demonstrate that our designed codes achieve rate pairs close the optimal boundary of the HK subregion, which cannot be obtained without the use of nonlinear codes. Also, we verify that the estimated thresholds of the designed codes via finite block length simulations and show that our designs significantly outperform the point-to-point optimal codes, hence demonstrating the need for designs specifically tailored for DMICs.en_US
dc.description.sponsorshipTurkish Scientific and Technological Research Council of Turkey [114E601]; National Science Foundation [NSF-CCF 1117174]; European Commission [MC-CIG PCIG12-GA-2012-334213]en_US
dc.publisherIeee-Inst Electrical Electronics Engineers Incen_US
dc.subjectDiscrete Memoryless Interference Channelsen_US
dc.subjectNonlinear Trellis Codesen_US
dc.subjectLow-Density Parity-Check Codesen_US
dc.subjectConcatenated Codesen_US
dc.titleCode design for discrete memoryless interference channelsen_US
dc.relation.journalIeee Transactions on Communicationsen_US
dc.contributor.departmentBiruni Üniversitesien_US
dc.relation.tubitakTurkish Scientific and Technological Research Council of Turkey [114E601]; National Science Foundation [NSF-CCF 1117174]; European Commission [MC-CIG PCIG12-GA-2012-334213]en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US

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