Joint Spectrum and Power Efficiencies Optimization for Statistical QoS Provisionings in Wireless Networks
Spectrum and power efficiencies are both crucial to design efficient wireless networks. In past two decades, spectrum and power efficiencies of wireless networks are optimized separately. However, to increase the spectrum efficiency and reduce the energy consumption, it is necessary to jointly optimize spectrum and power efficiencies of wireless networks. In this paper, the authors propose an efficient framework to model the statistical delay Quality of Service (QoS) guarantees, in terms of QoS exponent, Effective Spectrum Efficiency (ESE), and Effective Power Efficiency (EPE), for joint spectrum and power efficiencies optimization to transmit real-time traffics over wireless networks. In particular, they derive the relationship between ESE and EPE under statistical QoS provisioning constraint.