Paper Info
Title
Distributed power allocation for D2D communications underlaying/overlaying OFDMA cellular networks.
Abstract
The implementation of device-to-device (D2D) underlaying or overlaying preexisting cellular networks has received much attention due to the potential of enhancing the total cell throughput, reducing the power consumption, and increasing the instantaneous data rate. In this paper, we propose a distributed power allocation scheme for D2D OFDMA communications and, in particular, we consider the two operating modes amenable to a distributed implementation: dedicated and reuse modes. The proposed schemes address the problem of maximizing the users’ sum rate subject to power constraints, which is known to be nonconvex and, as such, extremely difficult to be solved exactly. We propose here a fresh approach to this well-known problem, capitalizing on the fact that the power allocation problem can be modeled as a potential game. Exploiting the potential games property of converging under better response dynamics, we propose two fully distributed iterative algorithms, one for each operation mode considered, where each user updates sequentially and autonomously its power allocation. Numerical results, computed for several different user scenarios, show that the proposed methods, which converge to one of the local maxima of the objective function, exhibit performance close to the maximum achievable optimum and outperform other schemes presented in the literature.
Year
DOI
Venue
2017
10.1109/TWC.2016.2646360
IEEE Trans. Wireless Communications
Keywords
DocType
Volume
Device-to-device communication,Interference,Resource management,Games,Cellular networks,Wireless communication,Base stations
Journal
abs/1609.04535
Issue
ISSN
Citations 
3
1536-1276
7
PageRank 
References 
Authors
0.48
0
2
Name
Order
Citations
PageRank
Andrea Abrardo137647.39
Marco Moretti213816.56