DocumentCode :
2353642
Title :
Energy-Efficient Multiuser MIMO Downlink Transmissions in Massively Distributed Antenna Systems with Predefined Capacity Constraints
Author :
Mahboob, Syed ; Mahapatra, Cosmena ; Leung, Victor C. M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of British Columbia, Vancouver, BC, Canada
fYear :
2012
fDate :
12-14 Nov. 2012
Firstpage :
208
Lastpage :
211
Abstract :
Massively distributed antenna system is a promising architecture to enhance the system performance in future broadband wireless access beyond the Long Term Evolution (LTE) and Long Term Evolution Advanced (LTE-A) standards. Reduction of the power consumption of such systems is an important issue in their practical realization. This paper presents a technique to optimize the power consumed by a massively distributed antenna system in a multiuser downlink scenario subjected to throughput constraints. More specifically, the power consumed under the target sum-capacity constraint is optimized. We use zero-force beam forming scheme to simplify our analysis and derive optimal rate allocation among the users. Simulation results confirm that the energy consumption can be reduced considerably while the throughput constraint is satisfied.
Keywords :
Long Term Evolution; MIMO communication; array signal processing; broadband antennas; broadband networks; channel allocation; channel capacity; energy conservation; multiuser channels; optimisation; radio access networks; LTE-A standard; energy efficiency; future broadband wireless access; long term evolution advanced; massively distributed antenna system; multiuser MIMO downlink transmission; optimal rate allocation; optimization; power consumption; predefined capacity constraint; throughput constraint; zero force beamforming scheme; Antenna arrays; Energy consumption; MIMO; Power demand; Resource management; Wireless communication; Energy consumption; convex optimization; massively distributed antenna system; multiuser MIMO; multiuser beamforming;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Broadband, Wireless Computing, Communication and Applications (BWCCA), 2012 Seventh International Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4673-2972-9
Type :
conf
DOI :
10.1109/BWCCA.2012.41
Filename :
6363058
Link To Document :
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