Rishipal Singh

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Underwater Wireless Sensor Networks (UWSNs) are widely used to explore aqueous environment. In UWSN, determining the location of sensor nodes is a critical issue. Sensed data is meaningful only when sensing node is localized. There are many techniques available for localization in Wireless Sensor Network (WSN) but they are not applicable in UWSN. GPS(More)
Delay-tolerant Networking (DTN) enables communication in sparse mobile ad-hoc networks and other challenged environments where traditional networking fails and new routing and application protocols are required. Past experience with DTN routing and application protocols has shown that their performance is highly dependent on the underlying mobility and node(More)
To fully utilize the spectrum resources, dynamic spectrum access is found to be very helpful. In this paper, a continuous time Markov chain (CTMC) based dynamic spectrum access (DSA) scheme is proposed for interaction between primary and secondary users along with the imperfect sensing environment (false alarm and misdetection). Since, collision occurs(More)
These days wireless sensor networks handle a widespread range of monitoring tasks using their sensing and vision capabilities. These tasks may consist of very complex functions and large calculations. In order to make network alive for a long duration, these sensors have to take decision in judicious and efficient manner. The increased lifetime results into(More)
One of the crucial demanding factors for WiMAX wireless networks is to provide broadband services all over the geographic region. With an increase in distance the achievable carrier to interference Ratio (CINR) declines which point to non line of sight (NLOS) and decrease the signal. This paper discusses an analytical dimensioning approach and feasible(More)
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