DocumentCode :
42563
Title :
Interference-Aware Resource Control in Multi-Antenna Cognitive Ad Hoc Networks with Heterogeneous Delay Constraints
Author :
Xiaoming Chen ; Chen, Hsiao-hwa
Author_Institution :
Coll. of Electron. & Inf. Eng, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Volume :
17
Issue :
6
fYear :
2013
fDate :
Jun-13
Firstpage :
1184
Lastpage :
1187
Abstract :
In this work, we consider a multi-antenna cognitive ad hoc network (CAHNet) with heterogeneous delay requirements. To fulfill the interference and delay constraints simultaneously, we propose to perform adaptive zero-forcing beamforming (ZFBF) at cognitive transmitters according to interference channel state information (CSI). To assist the CAHNet to obtain the interference CSI, we use a win-win inter-network cooperation strategy, namely quantized interference CSI feedback from the primary network to CAHNet through a feedback link, under the condition that the CAHNet pays a proper price for it. Considering the scarcity of feedback and power resources, we focus on the minimization of the overall resource cost subject to both interference and delay constraints. To solve the problem, we derive a joint feedback and power control algorithm amongst multiple links of CAHNet. Finally, simulation results validate the effectiveness of the proposed algorithm.
Keywords :
ad hoc networks; antenna arrays; array signal processing; cognitive radio; feedback; power control; radio transmitters; radiofrequency interference; telecommunication power management; wireless channels; CAHNet multiple link; ZFBF; adaptive zero-forcing beamforming; cognitive transmitter; feedback link; heterogeneous delay constraint; interference channel state information; interference-aware resource control; multiantenna cognitive ad hoc network; power control algorithm; power resource; quantized interference CSI feedback; win-win internetwork cooperation strategy; Ad hoc networks; Bismuth; Cognitive radio; Delays; Interference; Joints; Transmitters; Cognitive network; ad hoc network; multi-antenna; resource control;
fLanguage :
English
Journal_Title :
Communications Letters, IEEE
Publisher :
ieee
ISSN :
1089-7798
Type :
jour
DOI :
10.1109/LCOMM.2013.042313.130481
Filename :
6510566
Link To Document :
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