Title :
Energy Efficiency and Spectral Efficiency Tradeoff in Interference-Limited Wireless Networks
Author :
Yuzhou Li ; Min Sheng ; Chungang Yang ; Xijun Wang
Author_Institution :
State Key Lab. of ISN, Xidian Univ., Xi´an, China
Abstract :
This letter investigates the fundamental tradeoff between energy efficiency (EE) and spectral efficiency (SE) for interference-limited wireless networks (IWNs), which is a nonconvex optimization and NP-hard problem. A general algorithm procedure (GAP) embedded with an iterative power allocation algorithm (IPAA) is proposed, which has good performance with the advantages of fast convergence, low complexity and insensitivity to initial values. Simulation results explicitly depict the EE-SE tradeoff curve for IWNs.
Keywords :
energy conservation; interference (signal); iterative methods; radio networks; EE-SE tradeoff curve; NP-hard problem; energy efficiency; general algorithm procedure; interference-limited wireless networks; iterative power allocation algorithm; nonconvex optimization; spectral efficiency tradeoff; Ad hoc networks; Complexity theory; Convergence; Optimized production technology; Resource management; Wireless networks; Energy efficiency; power allocation; spectral efficiency;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2013.082613.131286
