M Tech Dissertations

Permanent URI for this collectionhttp://ir.daiict.ac.in/handle/123456789/3

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Subject: search.filters.subject.Wireless Application Protocol

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    Design of cutom wireless protocol for signal transmission inside space equipment
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2014) Sanghani, Hardik Jayesh; Dubey, Rahul
    There are many sensors and devices inside the satellite. All these devices need to communicate with each other, those devices can be sensor nodes or control device. According to current technology communication between different sensor nodes inside the satellite is wired, which adds the weight of the harness cable. It will be reliable if the communication between them is made wireless. Protocol satisfying communication standards at low data rate and short range wireless networking must be developed. Protocol which is suitable to meet our requirements is available in the market in commercial packages, but the commercial standard devices cannot provide the efficient functionality in space as they are not resistant to the various radiation effects taking place in space. So our aim is to design a protocol in hardware description languages which can be embedded in radiation resistant series of space Grade FPGA. The baseband transceiver proposed in this thesis uses OQPSK modulation, Pseudo noise spread spectrum is used for coding and sinusoidal pulse shaping having theoretical bandwidth efficiency of 2bits/Hz same as QPSK and OQPSK is used for baseband processing. The transceiver is initially simulated in MATLAB Simulink and then in Verilog HDL by the MODELSIM simulator.
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    Generalized data extraction protocol for habitat monitoring applications in WSNs
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2011) Hemnani, Deepak Manohar; Srivastava, Sanjay
    Habitat monitoring applications use WSNs to gather data about environment and migration patterns of animals. This data is used by biologists to analyze the life and behavior of animals in different environments. The application involves designing of WSN nodes to tag the animals and running protocols to gather and exchange information to be collected at the base station. Given the limited resources i.e. energy and memory, there is a need for an energy efficient and memory efficient data extraction protocol. We take in to consideration previous work done in Zebra net and wild CENSE to formulate a generalized protocol which could be implemented as is. The protocol parameters are defined as symbols which are based on application parameters. My work involves identifying the gaps in the previous work done for habitat monitoring. Filling the gaps and coming up with a generalized protocol and finally providing formulation for the protocol in terms of application parameters.