In Mobile Ad-hoc NETworks (MANETs) nodes communicate directly with each other when they are both within the same communication range. Otherwise, they rely on their neighbors to relay messages. The open medium and wide distribution of nodes or the lack of centralized infrastructure make MANET vulnerable to malicious attackers. Security has become a primary concern ...
SYN flood attack is a Distributed Denial of Service attack (DDoS). This paper presents an effective and more accurate mechanism to detect synflood attack. In the proposed SYN-flood defense mechanism, different transport layer parameters are used to characterize attack, like abnormal increase in SYN packet, SYN-ACK packets and increase in SYN/FIN rate. Lyapunov exponent developed ...
Wireless sensor network contains sensor nodes which are spread to sense the ecological surroundings, collect data and transfer it to a base station for processing. Energy conservation in the Wireless Sensor Network (WSN) is an important task due to their inadequate battery power. The related works till now have already been done to resolve the ...
Automatic speaker identification technology has recently been implemented in several of commercial areas successfully. Speaker identification comes under speaker recognition and is gaining significance for voice based biometrics. It is used in appliances that understand voice commands, provides security to confidential information, etc. In this paper, the authors have built reference model for each speaker ...
Wi-Fi based Long Distance (WiLD) networks have the potential to provide connectivity at substantially lower costs than traditional approaches. However, it is well known that the standard CSMA/CA MAC protocol used by Wi-Fi is not well suited for long distances. To achieve better performance, some researchers have proposed replacing the standard CSMA/CA MAC with a ...
The most area consuming arithmetic operations in high-performance circuit’s Finite Impulse Response (FIR) multiplication is one. The authors are using different types of multipliers to reducing the cost of effective parameters in FIR filter design. They use only truncated multipliers in design, by using these multipliers they consume some more area and power, and ineffective ...
In this paper, the authors investigate the problem of varying the size of dots in the digital half toning processes. The reproduction of grey scale images in bi-level graphic displays is achieved through a process called half toning. Given a grey scale image it consists in generating a binary image which causes the impression of ...
A method of designing a dish antenna that serves two purposes was designed and demonstrated in this paper. This paper was framed around this idea and it was decided to line this large ‘Free area’ with solar cells and generate electricity. The Dish TV setup would then serve its primary function as well as provide ...