Research Article
On orientations of directional antennas in wireless sensor network
@INPROCEEDINGS{10.1109/CHINACOM.2008.4685027, author={Minh Pham and Wanzhi Qiu and Stan Skafidas and Gavin Thoms}, title={On orientations of directional antennas in wireless sensor network}, proceedings={ChinaCom2008-Wireless Communications and Networking Symposium}, publisher={IEEE}, proceedings_a={CHINACOM2008-WCN}, year={2008}, month={11}, keywords={Sensor network; channel capacity; Shannon capacity; directional antenna; global optimization; antenna orientation}, doi={10.1109/CHINACOM.2008.4685027} }- Minh Pham
Wanzhi Qiu
Stan Skafidas
Gavin Thoms
Year: 2008
On orientations of directional antennas in wireless sensor network
CHINACOM2008-WCN
IEEE
DOI: 10.1109/CHINACOM.2008.4685027
Abstract
The paper presents a model for the total Shannon capacity of a network as a function of antenna orientations. The resulting function is neither concave nor convex and is multiextrema with multiple local optima. An optimum solution for the orientations of the directional antennas leads to the global maximization of the total channel capacity. This global optimization problem cannot be solved by classical nonlinear programming technique. The objective function is shown to be Lipschitzian and is optimized by a Lipschitz optimization algorithm. The algorithm is a realization of the generic branch and bound methodology. Simulation results are reported and discussed
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