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As the days go by, the innovation in the technology is growing faster and smaller chips with more complexity in the design and implementation. Design of adders is prime importance in any given embedded application; hence the design of reliable and efficient adder on a VLSI based embedded application matters. In this paper we primarily deal with the construction of high speed adder circuits. Design...
Ns-3 is a widely used as a the network simulator of choice by researchers. It contains many well tested and high quality models of network protocols. However, the application layer models of ns-3 are very simplistic, and do not capture all aspects of real life applications. As a result, there is often a huge gap between the results of real experiments and the corresponding simulations. This problem...
In this work, we evaluate the performance ofthree routing protocols epidemic, sprayandwait and maxpropin Vehicular Delay Tolerant Networks (VDTNs). We study theimpact of vehicles density and ttl on the network performance. The simulations are conducted with the Opportunistic NetworkEnvironment (ONE) simulator. The performance is analyzedusing delivery probability, overhead ratio, average latencyand...
Arithmetic unit design using reversible logic gate has received much attention as it reduces power dissipation with no loss of information. This paper proposes the design of 32-bit Binary Coded Decimal (BCD) addition and subtraction unit using reversible logic gates. The reversible 32 -bit BCD addition unit is designed using the following modules such as reversible 4-bit Carry Propagate unit using...
Data gathering in an energy efficient and timely manner is one of the fundamental tasks of wireless sensor network (WSN). Applications where continual monitoring of inhabitable deployment area over a considerable time is required calls for proactive hierarchical data routing protocols. One of them i.e. PEGASIS routing protocol suffers from data redundancy and latency. This paper presents an enhanced...
Noise is an important factor in the analog and digital circuits which determine the characteristics of the system. The work aims at developing a noise robust circuit with high frequency response and the same can be implemented in a dynamic logic system with reduced number of transistor and also the dynamic logic will have the probability of signal switching activity to be low which will subsequently...
VLSI technology is an emerging field in the current technological scenario due to its advancements in fields of systems architecture, analog and digital logic and adders are the basic building blocks in digital integrated circuit based designs. The existing Ripple Carry Adder (RCA) has the most compact design but takes longer computation time. The time critical applications use Carry Look-ahead Adder...
The aim of this paper is to design multiplier circuits for artificial neural network applications. The efficient use of area and speed performance has become a challenging task VLSI design field. In this works, radix-4 booth multiplier and radix-2 booth multiplier algorithms are analyzed based on its area used and speed performance. The less area used means the multiplier is more efficient in usage...
This article present the design of automatic component to control room condition. The lights and fan will turn on in accordance ideal temperature workspace when there are peoples in the room and if no one in the room then the room lights and fan will not be active. This research use PIR sensor and LM35 as input, a component is developed based on FPGA device. The IP core of component is ready to fabricate,...
Conventional main memory systems made of DRAM are hitting power, cost and scalability limits. Many non volatile memory technologies like phase change memory are now strong competitors for DRAM due to their higher density but are inferior in terms of latency. Non uniform latencies of memory devices affect the overall memory access latency. Reordering mechanisms are hence used to change the memory access...
Dispatch reliability (DP) is an index which describes the probability that a flight can take-off on time. This article intends to redefine the dispatch reliability, and thus can reflect a more realistic operational performance, and also have reference value to both aircraft designing and operating management. The new definition will contain relatively overall influencing factors, both mechanical and...
Delay-Tolerant Networks (DTNs) are sparse dynamic wireless networks, where most of the time a complete end-to-end path from the source to the destination does not exist. There are many real networks that follow this model, for example, military networks, vehicular ad-hoc networks (VANETs), wildlife tracking sensor networks, etc. In this context, conventional mobile ad-hoc routing schemes would fail,...
Healthcare has become reliant on electronic health record systems to support patient treatment. Despite all of the benefits of these electronic systems, they have one major flaw: they can go offline, leaving healthcare workers forced to employ contingency plans and procedures. The procedures are poorly regulated and rarely practiced, introducing the potential for significant increase to patient risk...
Energy efficiency is a very important requirement in designing a MAC protocol for wireless sensor networks (WSNs) using battery-operated sensor nodes. We proposed a new energy-efficient MAC protocol, RIX-MAC, based on asynchronous duty cycling and receiver-initiated scheme. In this paper, we analyze the performance such as throughput, delay, and energy consumption of RIX-MAC with modeling and simulation...
This manuscript provides a novel method to improve occupied area, speed and power consumption of Infinite Impulse Response (IIR) decimation filter. The filter is design using proposed Merged Delay Transformed (MDT). First, mathematical calculation is performed and then applied effectively to first- and second-order IIR filters. The performance of the proposed design is compared with the exiting polyphase...
In this study, we consider the sharing of standing-type personal mobility devices. Such devices have various advantages as a means of transportation, but their cost makes sharing more attractive than owning. Sharing personal mobility devices is expected to have social influences such as a modal shift, however, this is not yet apparent. Consideration of the effects based on a multi-agent simulation...
Delay Tolerant Network (DTN) is developed to cope with intermittent connectivity and long delay in wireless networks. Due to limited bandwidth, connectivity and buffer space, DTN is vulnerable to flooding attack where malicious nodes flood the network with excess data to deplete the network resources. In this paper, we propose a detection scheme for flooding attack that piggybacks on an existing encounter...
As a breakthrough technology under 3GPP, LTE has attracted attention worldwide. Main features include enhanced peak data rates, lower delay, increased cell edge throughput. For an LTE system, serving a large number of users requires an efficient RRA algorithm which has not been standardized for the system and is still an open end for development. Researchers have proposed various algorithms some of...
The communication standard IEC 61850 which is defined for information exchange in smart grids, has been increasingly used for Substation Automation Systems (SAS). Current mainstream communication technologies such as switched Ethernet and TCP/IP have been adopted for the communications networking. However, with the growing amount of IEDs in one collision domain, a risk of violation of transmission...
The license assisted access (LAA) along with listen before talk (LBT) mechanism for access of unlicensed spectrum by LTE is a recent study item of the 3rd Generation Partnership Project (3GPP). The LAA-LBT is expected to be a feature in Release 13 of LTE that will allow mobile operators to utilize the unlicensed spectrum as their secondary carrier for data offloading. However, the unlicensed spectrum...
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