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Secure data delivery in mobile ad hoc network using multiple paths
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
A mobile ad hoc network (MANET) is a self configurable, self organized, infrastructure less multi hop mobile wireless network.Characteristics of ad hoc network make security a critical issue i.e. any node can join the ...
Bidding strategies for dynamic spectrum allocation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)
Dynamic Spectrum Allocation is the process of assigning spectrum licenses in terms of the chunks of the spectrum band to the Wireless Service Providers (WSPs). This allocation assignment is being done as per the WSPs' ...
Ant colony optimization in routing algorithms of mobile ad hoc networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)
The study on performance of On-demand Ant Routing Algorithm for Mobile Ad Hoc Network is done. An ant routing algorithm based on swarm intelligence and especially on Ant Colony Optimization (ACO). It describes a noval on ...
Optical wireless sensor network design for a conducting chamber
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
Now a day’s majority of the wireless sensor networks (WSNs) are based on Radio Frequency (RF) communication technology. But RF when used in an environment like that of metallic, conducting chamber exhibits large amount of ...
Game theory based strategies for cooperation in ad hoc wireless networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)
In self-organized ad-hoc wireless networks, nodes belong to different authorities, pursue different goals, have constrains like energy; therefore, cooperation among them cannot be taken for granted. Non cooperation of nodes ...
Channel estimation in OFDM systems
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)
Orthogonal frequency division multiplexing (OFDM) is not a new concept, but its receiver design has constant improvement. OFDM uses available spectrum efficiently and the system provides high data rates. Many standards ...
Precoder design for beamforming in K-User MIMO interference chennel
(Dhirubhai Ambani Institute of Information and Communication Technology, 2014)
Beamforming in MIMO wireless networks, is a techniques used for mitigating interference and achieve the best possible throughput. Accurate channel state information is essential for efficient design of beamforming vectors ...
Application of compressive sensing to tow-way relay channel estimation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)
An Amplify and Forward Two-Way Relay Network is one where two nodes transmit data to
each other via an intermediate relay. The relay amplifies the superimposed data from both
the nodes before sending it to both the nodes. ...
Application of network coding in wireless sensor and relay based ad hoc networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2015)
Network Coding (NC) is a new area which brings radical change in the way we
treat information flow in networks. NC considered being a layer 3 operation has been
shown to improve the throughput of wired networks especially ...
Design of a novel high linearity down conversion mixer for GSM band applications
(Dhirubhai Ambani Institute of Information and Communication Technology, 2012)
Double balanced Gilbert cell mixer (GCM) is the mostly used kind of mixer as it provides
conversion gain and has port to port isolation. This mixer lacks in linearity and noise figure
which are to be taken care in designing ...