A new eigen-direction alignment algorithm for physical-layer network coding in MIMO two-way relay channels

Tao Yang*, Xiaojun Yuan, Ping Li, Iain B. Collings, Jinhong Yuan

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

20 Citations (Scopus)

Abstract

We propose a new joint channel coding and physical layer network coding (CPNC) scheme for multiple-input multiple-output (MIMO) two-way relay channels (TWRCs). At the heart of the scheme lies a key technique referred to as eigen-direction alignment (EDA) precoding. This technique efficiently creates multiple aligned parallel channels which facilitates the deployment of multi-stream CPNC. Our analysis shows that the achievable rate of the scheme can approach the capacity upper bound in the median to high signal-to-noise (SNR) region when n T > n R, where n T and n R denote the number of antennas of each user and that of relay, respectively. The gap to the capacity upper bound diminishes as nT/nR increases. Numerical results demonstrate that the proposed scheme significantly outperform other well-known schemes in the literature.

Original languageEnglish
Title of host publication2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages2253-2257
Number of pages5
ISBN (Electronic)9781457705953, 9781457705946
ISBN (Print)9781457705960
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011 - St. Petersburg, Russian Federation
Duration: 31 Jul 20115 Aug 2011

Other

Other2011 IEEE International Symposium on Information Theory Proceedings, ISIT 2011
CountryRussian Federation
CitySt. Petersburg
Period31/07/115/08/11

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