DocumentCode :
2492529
Title :
Power allocation under noise floor uncertainty
Author :
Guruacharya, Sudarshan ; Rajatheva, R.M.A.P.
Author_Institution :
Sch. of Eng. & Technol., Asian Inst. of Technol., Pathumthani, Thailand
fYear :
2009
fDate :
26-28 Aug. 2009
Firstpage :
1
Lastpage :
5
Abstract :
It is well known that, when the channel state information and noise power is perfectly known, the optimal power allocation policy is given by waterfilling procedure. In this paper, we derive the necessary and sufficient conditions for optimal power allocation policy under noise power uncertainty, and express it in terms of Hilbert transformation. A two step algorithm is developed to allocate power in such a case. We then examine the consequences of such a policy in multi user power allocation problem using non-cooperative game theory and show the existence of a unique, pure, and stable Nash equilibrium. For multi user case, an iterative approach is used to allocate power to each user in a distributive manner.
Keywords :
Hilbert transforms; game theory; iterative methods; multiuser channels; noise; transmitters; Hilbert transformation; Nash equilibrium; channel state information; iterative approach; necessary and sufficient conditions; noise floor uncertainty; noise power uncertainty; noncooperative game theory; optimal power allocation policy; transmitters; two step algorithm; waterfllling procedure; Additive noise; Channel state information; Game theory; Interference; Nash equilibrium; Power engineering and energy; Stability; Sufficient conditions; Transmitters; Uncertainty;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4337-6
Electronic_ISBN :
978-1-4244-4337-6
Type :
conf
DOI :
10.1109/CHINACOM.2009.5339959
Filename :
5339959
Link To Document :
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