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In this paper, we propose a high order cumulants based spectrum sensing and power recognition (CSR) detector for hybrid interweave-underlay spectrum access, where the primary system is with multiple transmit power levels. Specifically, to detect the idle spectrum when primary user (PU) is absent, high order cumulants based spectrum sensing is performed in interweave model. When PU is detected, the...
This paper presents a solution to counter black hole attacks in mobile ad hoc networks (MANETs). Black hole attacks are effective DoS (Denial of Service) attacks committed by fabricating routing information, attracting packets routed through them, and then dropping the packets. The ETX (Expected Transmission Count) metric is a common routing metric in MANETs. It measures the delivery ratio of a wireless...
Wireless and mobile networks represent an active research and new technology development area. In this paper we analyze wireless network and discuss the applications of wireless technology. To fully support mobility, a next generation Internet must provide ways to name and route to a much richer set of network elements than just attachment points. It should support routing in terms of names, which...
Owing to the technological advances in computing power and wireless communications, applications that used to be only accessible on desktop computers are increasingly run-able on wireless devices. As a result, a wireless device user may run several applications at the same time, and these different applications may generate different data types. In a mobile ad hoc network (MANET) environment, which...
In this paper, one of the QoS models for MANETs-SWAN is studied under varying conditions to provide both quantitative and qualitative assessments of the applicability of the model in different scenarios. Results and analysis from NS-2 based simulation indicate that (i) real-time (RT) applications in SWAN-enabled mobile ad hoc networks experience low and stable delays under various traffic and mobility...
In this paper we analyze wireless network and discuss the applications of wireless technology. In wireless network, the wireless devices should be able to operate independently of the broader Internet. In particular, there may be times during which the connection of a wireless device or network to the Internet is not available. During these times, wireless devices should be able to operate stably...
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