Paper Info
Title
Resource Allocation for Cooperative D2D-Enabled Wireless Caching Networks.
Abstract
In this paper, we study the resource allocation problem for a cooperative device-to-device (D2D)-enabled wireless caching network, where each user randomly caches popular contents to its memory and shares the contents with nearby users through D2D links. To enhance the throughput of spectrum-sharing D2D links, which may be severely limited by the interference among D2D links, we enable the cooperation among some of the D2D links to eliminate the interference among them. We formulate a joint link scheduling and power allocation problem to maximize the overall throughput of cooperative D2D links (CDLs) and non-cooperative D2D links (NDLs), which is NP-hard. To solve the problem, we decompose it into two sub-problems that maximize the sum rates of the CDLs and the NDLs, respectively. For CDL optimization, we propose a semi-orthogonal-based algorithm for joint user scheduling and power allocation. For NDL optimization, we propose a novel low-complexity algorithm to perform link scheduling and develop a Difference of Convex functions (D.C.) programming method to solve the non-convex power allocation problem. Simulation results show that the cooperative transmission can significantly increase both the number of served users and the overall system throughput.
Year
DOI
Venue
2018
10.1109/glocom.2018.8647286
IEEE Global Communications Conference
DocType
Volume
ISSN
Conference
abs/1808.06998
2334-0983
Citations 
PageRank 
References 
0
0.34
0
Authors
8
Name
Order
Citations
PageRank
Jiaqi Liu13318.10
Shengjie Guo2193.31
Sa Xiao3219.05
Miao Pan469868.15
Xiangwei Zhou545135.87
Geoffrey Ye Li69071660.27
Gang Wu749646.99
Shaoqian Li82276195.05