Title :
Energy Efficiency and Spectral Efficiency Tradeoff in Device-to-Device (D2D) Communications
Author :
Zhenyu Zhou ; Mianxiong Dong ; Ota, Kaoru ; Jun Wu ; Sato, Takao
Author_Institution :
State Key Lab. of Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Beijing, China
Abstract :
In this letter, we investigate the tradeoff between energy efficiency (EE) and spectral efficiency (SE) in device-to-device communications underlaying cellular networks with uplink channel reuse. The resource allocation problem is modeled as a noncooperative game, in which each user equipment is self-interested and wants to maximize its own EE. Given the SE requirement and maximum transmission power constraints, a distributed energy-efficient resource allocation algorithm is proposed by exploiting the properties of the nonlinear fractional programming. The relationships between the EE and SE tradeoff of the proposed algorithm and system parameters are analyzed and verified through computer simulations.
Keywords :
cellular radio; channel allocation; distributed algorithms; energy conservation; game theory; nonlinear programming; radio spectrum management; resource allocation; telecommunication power management; D2D communications; cellular networks; device-to-device communications; distributed energy-efficient resource allocation algorithm; energy efficiency; noncooperative game; nonlinear fractional programming; resource allocation problem; spectral efficiency tradeoff; transmission power constraints; uplink channel reuse; user equipment; Educational institutions; Interference; Optimization; Programming; Resource management; Simulation; Transmitters; D2D communication; EE and SE tradeoff; noncooperative game; nonlinear fractional programming;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/LWC.2014.2337295
