DocumentCode :
3071586
Title :
Power Control and Interference Awareness Using Busy Bursts
Author :
Videv, Stefan ; Auer, Gunther ; Haas, Harald
Author_Institution :
Sch. of Eng. & Sci., Jacobs Univ. Bremen, Bremen, Germany
fYear :
2009
fDate :
20-23 Sept. 2009
Firstpage :
1
Lastpage :
5
Abstract :
This paper presents the integration of power control and the busy burst (BB) technique for a TDD OFDMA (time division duplex orthogonal frequency division multiple access) system in an urban Manhattan grid type of environment. The objective is to combine power control with the BB protocol to develop a power efficient interference-avoidance technique. Previous work has demonstrated that the time multiplexed BB can be used to achieve interference aware medium access. It has also been demonstrated in other work that the implicit feedback mechanism of BB can be exploited to achieve Pareto optimal SINR-based (signal-to-interference-plus-noise ratio) power control. However, these two applications are not compatible the former depends on fixed signal powers across users, while the latter makes use of variable signal power to achieve optimum power control. This paper proposes an amendment to the BB technique that allows the two approaches to co-exist by exploiting the frequency granularity of OFDMA to frequency multiplex two BBs one with variable and one with fixed power. The resulting control protocol exhibits an eight-fold reduction at the 50th percentile of used energy with no additional overhead as compared to the single BB protocol.
Keywords :
OFDM modulation; power control; telecommunication control; telecommunication power supplies; time division multiple access; BB protocol; Manhattan grid; Pareto optimal SINR; TDD OFDMA; busy bursts; interference aware medium access; interference awareness; interference-avoidance technique; power control; signal-to-interference-plus-noise ratio; time division duplex orthogonal frequency division multiple access system; Feedback; Frequency conversion; Image processing; Interference; Jacobian matrices; Power control; Power engineering and energy; Protocols; Signal processing; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th
Conference_Location :
Anchorage, AK
ISSN :
1090-3038
Print_ISBN :
978-1-4244-2514-3
Electronic_ISBN :
1090-3038
Type :
conf
DOI :
10.1109/VETECF.2009.5379025
Filename :
5379025
Link To Document :
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