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Small world characteristics have been observed and studied in social networks in the context of information dissemination in important applications like disease spread among communities. However, the significance of small world characteristics in wireless sensor network (WSN) applications has hitherto not been investigated. This work investigates the significance of introducing small world characteristics...
In this paper, a novel method to localize indoor wireless sensor nodes using visible light in non-line of sight (NLOS) condition is proposed. The proposed method is able to identify NLOS condition in a sensor network and subsequently localize the sensor nodes. Since visible light is used for localization, the reflection points are first localized using time difference of arrival in a maximum likelihood...
Small world characteristics (SWC) have been observed and studied in a wide range of disciplines such as social, biological, electrical and computer networks. However, the significance of SWC in wireless sensor network (WSN) applications has hitherto not been investigated. This work investigates the significance of introducing SWC in a conventional WSN for improving the accuracy of WSN node localization...
In this paper, a method for node localization in a novel small world - wireless sensor network (SW-WSN) is proposed. A SW-WSN is created by introducing small world characteristics into a conventional wireless sensor network (WSN). Introduction of long-ranged links between selected nodes in a WSN reduces average path length (APL) of the network without affecting the clustering coefficient (CC) significantly...
In this work, we are implementing FIR Gaussian low pass filter using DSP slice available in 28nm Kintex-7 FPGA. In order to make energy efficient filter, we are using capacitance scaling. During capacitance scaling, we observe that there is no change in clock power, logic power, signal power and DSP power. But, there is significant reduction in IOs power, leakage power and total power of FIR filter...
With the state of the art advancements in internet technology and wireless communication and consistent miniaturization in electronics hardware, the recent trend in engineering and research has been to embed everyday objects with computers and communication. This computing power and communication capability is imparted to the objects by adding compact and small silicon chips equipped with micro-processors...
Core dynamic power is independent of output load capacitance. IO power and static power is dependent on output load capacitance. In this work, we achieved 99.72% reduction in IOs power consumption of Universal Asynchronous Receiver Transmitter (UART) if we scale down output load from 10,000pf to 5pF in IOB setting of FPGA. Universal Asynchronous Receiver and Transmitter are a transceiver circuits...
The escalating complexity of computer networks on a daily basis has increased the probability of malicious exploitation. Even a rare vulnerability in a single computer might compromise the network security of an entire organisation. Intrusion Detection Systems form an integral component of the mechanisms designed to prevent internet and data communication systems from such attacks. The attacks on...
The emerging trend of ubiquitous and pervasive computing aims at embedding everyday devices such as wrist-watches, smart phones, home video systems, autofocus cameras, intelligent vehicles, musical instruments, kitchen appliances etc. with microprocessors and imparts them with wireless communication capability. This advanced computing paradigm, also known as the Internet of Things or cyber-physical...
Information security remains a challenging issue in wireless communication due to the broadcast nature of their channels. Source of a message can be authenticated by precise channel estimation of the physical layer without sharing secret key. The response of channel decorrelates rapidly because of the moving transmitter. In this paper, the effect of transmitter velocity on the authentication scheme...
In this paper, outage performance of Decode-forward (DF) and Amplify-forward (AF) protocols in cooperative wireless communication is evaluated in terms of outage probability. In particular, a new outage analysis for AF protocol has been carried out. Results obtained using this analysis matches with the simulated results. Outage probability analysis helps in deciding whether the targeted quality of...
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