NDLI: On full message exchange in MIMO DF multi-way relay networks

Content Provider	IEEE Xplore Digital Library
Author	Mao Yan Li, T.J. Qingchun Chen
Copyright Year	2014
Description	Author affiliation: Southwest Jiaotong Univ., Chengdu, China (Mao Yan; Qingchun Chen) \|\| Lehigh Univ., Bethlehem, PA, USA (Li, T.J.)
Abstract	This paper considers a half-duplex multi-way relay (MWR) network where K users exchange messages among themselves with the assist of a relay. The relay is equipped with N antennas and all the users are each equipped with M antennas. The rate region of the network is first characterized by the cut-set bound, and then the degree-of-freedom (DoF) is computed. It is shown that the maximum DoF of the MWR network is K min{M,N} /2(K-1), and a DoF of equation can be achieved by the decode-and-forward (DF) relaying strategy. Using the technology of zero-forcing signal alignment and successive interference cancellation, a DF scheme is further proposed to provide a practical and efficient mechanism for the K-user MWR (K ≥ 2). Compared to the existing schemes, the new scheme has the advantage either in interference cancellation or in delay. Simulations confirm the effectiveness of the new scheme.
Starting Page	264
Ending Page	268
File Size	310627
Page Count	5
File Format	PDF
ISBN	9781479949038
DOI	10.1109/SPAWC.2014.6941608
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-22
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Antennas MIMO Array signal processing Vectors Signal to noise ratio Network coding
Content Type	Text
Resource Type	Article

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