DocumentCode :
3310126
Title :
An energy-efficient hybrid structure with resource allocation in OFDMA networks
Author :
Xiao, Xiao ; Tao, Xiaoming ; Jia, Yizhen ; Lu, Jianhua
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fYear :
2011
fDate :
28-31 March 2011
Firstpage :
1466
Lastpage :
1470
Abstract :
Energy consumption of information and communication industry has generated increasing concerns recently, aiming at reducing power consumption or increasing energy efficiency. This paper proposes an energy efficient hybrid structure which introduces micro sites into traditional OFDMA cellular systems with only central macro base stations (BSs). The deployment of small and low power BSs alongside the central macro BSs is capable of advancing radio coverage, enhancing system capacity, and simultaneously increasing energy efficiency. Upon the proposed structure, two efficient solutions respectively based on Lagrangian dual decomposition (LDD) and serial carrier and power allocation (SCPA), are proposed to optimize energy efficiency. Simulation results show that our proposed hybrid structure can dramatically increase the energy efficiency and the downlink system capacity in OFDMA cellular systems.
Keywords :
OFDM modulation; cellular radio; frequency division multiple access; radio links; resource allocation; Lagrangian dual decomposition; OFDMA cellular system; OFDMA network; central macro base station; downlink system capacity; energy consumption; energy-efficient hybrid structure; information and communication industry; microsite; power consumption; radio coverage; resource allocation; serial carrier and power allocation; Downlink; Energy consumption; Hybrid power systems; Joints; Microwave integrated circuits; Power demand; Resource management;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2011 IEEE
Conference_Location :
Cancun, Quintana Roo
ISSN :
1525-3511
Print_ISBN :
978-1-61284-255-4
Type :
conf
DOI :
10.1109/WCNC.2011.5779346
Filename :
5779346
Link To Document :
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