Title :
Energy-efficient power allocation for the Uplink of Distributed Antenna Systems
Author :
Jia Liu ; Guixia Kang ; Ying Zhu ; Xin Gui
Author_Institution :
Key Lab. of Universal Wireless Commun., Minist. of Educ., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this letter, we investigate the tradeoff between energy efficiency (EE) and spectral efficiency (SE) in the Uplink of Distributed Antenna Systems with uniformly distributed Uts over the MIMO Rayleigh Fading Channel, and then demonstrate the derived closed-form approximation (CFA)´s accuracy when comparing with the nearly exact EE in the realistic power consumption models. Using this CFA, we get a low complexity and high efficiency approximate method to address the maximum energy-efficient power allocation policy by accurately approximating the transmit power in closed-form when considering that the aggregate number of transmitted antennas and received antennas are equal in the uplink.
Keywords :
MIMO communication; Rayleigh channels; antenna arrays; approximation theory; receiving antennas; transmitting antennas; CFA; MIMO Rayleigh fading channel; closed-form approximation; distributed antenna systems; energy-efficient power allocation policy; high efficiency approximate method; realistic power consumption models; received antennas; spectral efficiency; transmitted antennas; Antennas; Approximation methods; Energy efficiency; Fading; MIMO; Resource management; Uplink; Closed-form approximation; Distributed antenna systems; Energy efficiency; Power allocation; Spectral efficiency;
Conference_Titel :
Network Infrastructure and Digital Content (IC-NIDC), 2012 3rd IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-2201-0
DOI :
10.1109/ICNIDC.2012.6418723
