Relay-mapper aided multi-user lattice coding for the multiple-access relay channel

Chung Pi Lee, Shih Chun Lin, Hsuan Jung Su, H. Vincent Poor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper considers the multi-antenna multiple access relay channel (MARC), in which multiple users transmit messages to a common destination with the assistance of a relay. In a variety of MARC settings, the dynamic decode and forward (DDF) protocol is very useful due to its outstanding rate performance. However, the lack of good structured codebooks so far hinders practical applications of DDF for MARC. In this work, a new structured MARC code, one-to-one relay-mapper aided multiuser lattice coding (O-MLC), is proposed. It is shown that, in order to approach the rate performance obtained previously by using an unstructured codebook with maximum-likelihood decoding, it is crucial to use a new K-stage coset decoder instead of the one-stage decoder proposed in previous works. However, if O-MLC is decoded with the one-stage decoder only, it can still achieve the optimal DDF diversity-multiplexing gain tradeoff when the signal-to-noise ratio is high. Simulation results show that the proposed coding scheme outperforms existing schemes in terms of outage probabilities.

Original languageEnglish (US)
Title of host publication2013 47th Annual Conference on Information Sciences and Systems, CISS 2013
DOIs
StatePublished - Aug 20 2013
Event2013 47th Annual Conference on Information Sciences and Systems, CISS 2013 - Baltimore, MD, United States
Duration: Mar 20 2013Mar 22 2013

Publication series

Name2013 47th Annual Conference on Information Sciences and Systems, CISS 2013

Other

Other2013 47th Annual Conference on Information Sciences and Systems, CISS 2013
CountryUnited States
CityBaltimore, MD
Period3/20/133/22/13

All Science Journal Classification (ASJC) codes

  • Information Systems

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  • Cite this

    Lee, C. P., Lin, S. C., Su, H. J., & Poor, H. V. (2013). Relay-mapper aided multi-user lattice coding for the multiple-access relay channel. In 2013 47th Annual Conference on Information Sciences and Systems, CISS 2013 [6552341] (2013 47th Annual Conference on Information Sciences and Systems, CISS 2013). https://doi.org/10.1109/CISS.2013.6552341