Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/12889
Title: Achilles : Design of a high capacity mesh network with directional antennas
Authors: SUKANTA KUMAR HAZRA
Keywords: wireless network mesh antenna directional 802.11
Issue Date: 29-Nov-2008
Source: SUKANTA KUMAR HAZRA (2008-11-29). Achilles : Design of a high capacity mesh network with directional antennas. ScholarBank@NUS Repository.
Abstract: This thesis presents the design of Achilles, a wireless mesh network designed for longdistance communication with a typical deployment scenario of maritime mesh network.Achilles uses an antenna system made up of six fixed-beamwidth antennas. Directionalantenna is used for both transmission and reception b most other directional antennaschemes use directional antenna for transmission and omni-directional antenna for reception.It uses commodity radio hardware, modified to operate as 6 Mbps transceiver.The MAC protocol used by Achilles is Spatial Time Division Multiple Access (STDMA).In this thesis, we present practical methods, schemes, and algorithms required forneighbourhood discovery, topology broadcast, and link scheduling required for nodeusing directional antennas. By making efficient use of directional antennas, for bothtransmission and reception, and spatial reuse in transmission, Achilles achieves thegoal of a high capacity mesh network. In this thesis we describe in detail the variouscomponents of Achilles and evaluate its performance when compared to alternative meshschemes. We demonstrate that Achilles performs 2 to 3 times better than IEEE 802.11and TDMA based mesh networks.
URI: http://scholarbank.nus.edu.sg/handle/10635/12889
Appears in Collections:Master's Theses (Open)

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