作者
Min Sheng, Yuzhou Li, Xijun Wang, Jiandong Li, Yan Shi
发表日期
2015/8/21
期刊
IEEE Journal on Selected Areas in Communications
卷号
34
期号
1
页码范围
92-106
出版商
IEEE
简介
This paper investigates the problem of revealing the tradeoff between energy efficiency (EE) and delay in device-to-device (D2D) communications underlaying cellular networks. Considering both stochastic traffic arrivals and time-varying channel conditions, we formulate it as a stochastic optimization problem, which optimizes EE subject to the average power, interference-control, and network stability constraints. With the help of fractional programming and the Lyapunov optimization technique, we develop an algorithm, referred to as the TRADEOFF, to solve the problem. To deal with the nonconvex and NP-hard power allocation subproblem in the TRADEOFF, we adopt the prismatic branch and bound algorithm to find its globally optimal solution, where only a linear programming needs to be solved in each iteration. Thus, the TRADEOFF serves as an important benchmark to evaluate performance of other heuristic …
学术搜索中的文章
M Sheng, Y Li, X Wang, J Li, Y Shi - IEEE Journal on Selected Areas in Communications, 2015