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DOI number:10.1109/WCSP.2018.8555896
Affiliation of Author(s):School of ComputerScience and Information Engineering, Hefei University of Technology
Journal:2018 10th International Conference on Wireless Communications and Signal Processing
Key Words:Device-to-device communication, uplink and downlink subcarrier assignment, power allocation, maximum weighted bipartite matching
Abstract:Device-to-device (D2D) communication is a promising technique to improve the spectral efficiency of cellular networks. In this paper, we investigate the joint uplink and downlink resource allocation problem to maximize the sum data rate of the system while guaranting the quality of service (QoS) for both cellular user equipments (CUEs) and D2D user equipments (DUEs). In particular, we jointly consider both the uplink and downlink subcarrier resources for DUEs to reuse and formulate the optimization problem as a mixed integer nonlinear programming problem (MINLP) which is generally NP-hard. To make the problem tractable, a two-step scheme is proposed. First, the optimal power allocation is formulated as a non-linear programming problem and the optimal solution is achieved by searching among a finite set. Then, a maximum weight bipartite matching scheme is developed to select the best subcarrier for each DUE. Simulation results show that our proposed algorithm can significantly improve the system performance.
Co-author:Lei Xu,Jiaojiao Zhang,Min Peng
First Author:Caihong Kai
Indexed by:会议
Discipline:Engineering
Document Type:C
ISSN No.:2472-7628
Translation or Not:no
Date of Publication:2018-10-18
Included Journals:EI