Date of Award

Summer 2009

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Electrical & Computer Engineering

Program/Concentration

Electrical Engineering

Committee Director

Min Song

Committee Member

Dimitrie Popescu

Committee Member

Sachin Shetty

Call Number for Print

Special Collections LD4331.E55 R3557 2009

Abstract

This thesis proposes a method called virtual wired transmission scheme for ad hoc networks. The scheme is an efficient method to improve network performance parameters such as energy efficiency, capacity, interference, network throughput, etc. Performance parameters improvement can be done at different layers of the network architecture for mobile ad hoc networks. However most of the research efforts are concentrated on Physical, MAC and Network layers. In this thesis, a MAC protocol with a major MAC layer modification is proposed in combination with the usage of directional antennas, developing a novel method called virtual wired transmission scheme. In virtual wired transmission scheme, the MAC layer chooses the strongest link as the next hop instead of choosing the farthest node in the transmitting range of a node. This change requires analysis of all the network performance parameters; however, only energy consumption, capacity, interference and reliability have been focused and analyzed in this thesis. The effect on latency could be an uncertain, as collisions have not been taken into consideration in the thesis. However, theoretically virtual wired transmission shows a negative effect on the latency. This makes virtual wired transmission not very effective for time-sensitive application but can be very effective in energy-sensitive applications. The simulations involve the comparison of energy efficiency, capacity and interference of the current scheme with earlier existing methods which show that virtual wired transmission scheme performs better in every manner. The virtual wired transmission has been considered for ad-hoc networks in this thesis, but it can be more suitable for a more dense wireless sensor networks.

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DOI

10.25777/pa0j-8925

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