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http://dx.doi.org/10.7840/kics.2016.41.5.539

Design of Amplify-and-Forward Helper Stations for Cellular Networks with Device-to-Device Links  

Chung, Jihoon (School of Electrical Engineering, KAIST)
Kim, Donggun (Samsung Electronics)
Sung, Youngchul (School of Electrical Engineering, KAIST)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.41, no.5, 2016 , pp. 539-545 More about this Journal
Abstract
In this paper, the use of an amplify-and-forward (AF) helper station in a cellular network with device-to-device (D2D) communication links is considered to enhance D2D rates and control the interference caused by D2D users to the cellular network. Two design criteria for the AF helper station are considered to improve the overall system quality-of-service (QoS). One is maximization of the worst D2D user rate under a constraint on interference caused by D2D users to the cellular network and the other is its dual, i.e., minimization of interference caused by D2D users to the cellular network with minimum rate guarantee for each D2D user. It is shown that the considered problems reduce to semi-definite programming (SDP) problems. Numerical results show that the proposed AF helper station significantly improves the system performance.
Keywords
Device-to-Device (D2D); Amplify-and-Forward (AF) Relays; Semi-Definite Program (SDP);
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Times Cited By KSCI : 3  (Citation Analysis)
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