NDLI: Multi-destination relaying protocol for enhanced spectral efficiency

Content Provider	IEEE Xplore Digital Library
Author	Seong Hwan Kim Tho Le-Ngoc Junsu Kim
Copyright Year	2013
Description	Author affiliation: Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada (Seong Hwan Kim; Tho Le-Ngoc) \|\| Dept. of Electron. Eng., Korea Polytech. Univ., South Korea (Junsu Kim)
Abstract	To improve the spectral efficiency of amplify-and-forward (AF) half-duplex relaying schemes, we propose a multidestination AF relaying protocol, in which the source sends two different data streams in two time-slots to two destinations with the aid of two relay nodes. In contrast to the conventional singledestination AF relaying protocol, the proposed multi-destination AF relaying protocol allows mutual interference in the transmission of the two data streams due to non-orthogonal resource allocation. Two relay nodes are opportunistically selected from a set of available relay nodes to maximize the minimum achievable rate of two data streams. We take into account the mutual interference and derive the ergodic capacity of the proposed protocol by deriving closed-form approximation. We show that the proposed protocol outperforms the conventional opportunistic AF relaying when the average power of interference is less than a crossover point and the proposed scheme has larger performance gain as the number of relay nodes increases in terms of the ergodic capacity.
Starting Page	175
Ending Page	179
File Size	221464
Page Count	5
File Format	PDF
ISBN	9781467362351
ISSN	21669570
DOI	10.1109/PIMRC.2013.6666126
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Interference Protocols Approximation methods Signal to noise ratio Performance gain downlink multicast amplify-and-forward opportunistic relay selection
Content Type	Text
Resource Type	Article

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