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Now showing items 21-28 of 28
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. ...
Power management of wireless sensor node by dynamic power measurement
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
Wireless sensor network(WSN) is a collection of spatially distributed autonomous sensor nodes, which cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or ...
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 ...
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 ...
Pulse shaping for linear time varying channels
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
Pulse shaping is the one of the important an critical area for wireless communication. In this article we show the relation between pulse shaping for wide sense stationary uncorrelated scattering (WSSUS) channels and
the ...
Hardware implementation of multiband and multimode modem for software defined radio/ cognitive radio
(Dhirubhai Ambani Institute of Information and Communication Technology, 2011)
Present day programmable hardware and SDR (Software Defined Radio) have enabled radio processing to switch from analog to digital. The work presented here describes a method of designing a multiband & multimode modulator ...