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Overview:

This paper presents a novel slotted MAC (Medium Access Control) protocol for nodes equipped with adaptive antenna array in ad hoc network. The protocol relies on the ability of antenna to uses DOA (Direction-Of-Arrival) information to beamform by placing nulls in the direction of interferers thus maximize SINR (Signal to Interference and noise ratio) at the receiver. The paper studied the performance of the protocol using joint simulation in OPNET and Matlab. They studied the impact of variable number of antenna elements, DOA algorithm, and nulling. The performance of the new protocol is compared against one of the recent directional MAC protocols. They observe that despite the simplicity of their protocol it achieves high throughput.

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Format:PDFSize:135 KB
Date:Jan 2009
Pages:5

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