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Now showing items 41-50 of 53
Wireless LAN 802.11 security using elliptic curve cryptography
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
IEEE 802.11 is a standard defines the specification of Wireless Local Area Network (WLAN), came into existence in 1997. As communication medium is wireless, security is a major concern to protect the data from adversary. ...
Localization of target in wireless sensor networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2005)
Advances in hardware and wireless network technology have made it possible to build and deploy dense ad-hoc wireless sensor networks of nodes collecting and disseminating information. One problem that arises in ad-hoc ...
Packet forwarding strategies for cooperation enforcement in mobile wireless ad hoc networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
In self-organized ad hoc networks, all networking functions rely on the contri-
bution of the relay nodes. Nodes have to forward packets for each other in order
to enable multi-hop communication. In recent years, researchers ...
Symbol detection in MIMO systems
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Multiple input multiple output symbol detection methods are observed under frequency flat fading AWGN channel condition. The modulation method employed is Quadrature amplitude modulation (QAM). The various symbol detection ...
Model based channel shortening technique for IEEE 802.11a OFDM system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2007)
Channel shortening tehniques for IEEE802.11a OFDM system are studied. Their performance is evaluated for various standard channel models. A model based channel shortening technique is presented, which reduces the computational ...
Multi band fractal antenna for satellite application
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Fractal Antenna is the current topic for the research engineering because Fractal Technology allow us to design miniature antennas and integrate multiple band in single device. This antenna is a type of Micro strip antenna ...
Exploring small world effect in ad hoc network
(Dhirubhai Ambani Institute of Information and Communication Technology, 2008)
Small world is a highly clustered i.e., a densely and fully connected network, with low degree of separation between the nodes. These networks have inherited the high clustering property of regular networks and low average ...
Broadband spectrum estimation using cascaded integrator comb filter
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)
Spectrum estimation using different type of lters is a broad area of research nowadays. In this work, Cascaded Integrator Comb (CIC) lter based narrowband spectrum estimation and CIC band pass lter is presented. Then the ...
State space based channel modelling
(Dhirubhai Ambani Institute of Information and Communication Technology, 2010)
xAbstract: An efficient channel estimation of single-input single output (SISO)/multiple-input multiple-output
(MIMO) wireless channel is required for analysis, prediction, fault detection, channel equalization
and ...
Effect of location inaccuracy on deterministic coverage and connectivity protocol in wireless sensor network
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
Sensor networks have a wide range of potential, practical and useful applications. Energy saving is one critical issue for sensor networks since most sensors are equipped with non rechargeable batteries that have limited ...