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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...
Reversible logic is one of the emerging computational methodologies which assures zero power dissipation through theoretical laws of thermodynamics. It has received significant interest in application on quantum computing, nanotechnologies and low power computing devices. In this work, we present a reversible logic implementation for Binary Coded Decimal (BCD) adder which is designed to obtain lowest...
Congestion has been the major root cause for the loss of data during its transit. Many researchers have been working on how to control congestion in end-to-end communication network. Yet, much progress was not achieved and the result was unsatisfied. Fuzzy techniques were employed that use either delay or packet loss. Combination of these two parameters rarely exists. This paper considers Queuing...
Reversible logic is an emerging technique of upcoming future technologies. Low heat dissipation and energy recycle principle are encouraging its demand for low power daily usage portable devices. In this paper, two reversible gates have been proposed, named as R-I gate and R-II gate, for realizing reversible combinational logic circuits. The proposed two gates can be used for realisation of basic...
We provide an improved bound for the expectation of the stationary delay under the maximum weight scheduling (MWS) policy in one-hop wireless networks. In the model, the interference of the links is characterized by an interference graph G=(V, E). For a vector μ ∊ R|V|+, let χf (G, μ) be the weighted fractional coloring number for the graph G under the weight vector μ. For an arrival rate vector λ...
Retransmissions serve as the basic building block that communication protocols use to achieve reliable data transfer. Until recently, the number of retransmissions was thought to follow a geometric (light-tailed) distribution. However, recent work shows that when the distribution of the packet sizes have infinite support, retransmission-based protocols may result in heavy-tailed delays and possibly...
Recent expansion of the computer networks has opened a possibility of explosive spread of computer viruses. Viral spreads that attack the end user or the nodes and hence the traffic on the network increases by self duplication and perpetuation. The net effect is, increase of senseless throughput spiraling, multiplication of load, and increased delay, leading to severe congestion and crash. Thus there...
Opportunistic networks are delay tolerant networks with sparse nodes. Nodes in an opportunistic network make use of a store-carry-and-forward method to communicate among themselves. Performance of routing protocols that have been developed for opportunistic networks vary based on the movement pattern of the nodes. This paper introduces an individual path based mobility pattern and analyzes the performance...
IEEE 802.16 (WiMAX) and IEEE 802.11 (WiFi) are different wireless access technologies with the former being used in Metropolitan Area Networks and the latter used in Local Area Networks. With the increase in popularity of WiMAX and WiFi networks, it is expected that mobile devices in future will be equipped with these radios for data access. Such a scenario presents us with an opportunity to utilize...
The notion of practical relative degree is proposed, which generalizes the standard relative-degree notion for the cases of uncertain systems lacking a reliable mathematical model. Practical output regulation is ensured. Computer simulation and practical results confirm the theoretical approach.
We propose a novel heuristic algorithm that performs geographical routing based on a greedy approach. Our proposed scheme first allocates the geographic locations of the source and the destination nodes influenced by their GPS information. A virtual Euclidean path is considered as a reference line to choose appropriate node for routing. Then, a multi-hop technique is adopted to establish routing path...
This deep space sensor network based on DTN is an important research in modern deep space communications technologies. Bundle layer plays a key role in the network. How Bundle layer can provide services for network more rationally and efficiently is an important influencing factor to improve and enhance the network performance. This paper proposes special network architecture for this DTN-based network...
The Communication Networks have been mainly used for transferring data/command among systems and to provide centralized display of data in control room of Nuclear Power Plants. Data Communication Protocols have evolved in terms of speed, reliability and safety significance. Computer Based Systems plays an important role in ensuring safety of NPPs, it is necessary to address performance related issues...
Cloud gaming now makes any computer game playable on a thin client without the previous worries and frustrations about the hardware requirements. It frees players from the need to frequently upgrade their computers as they can now play games that are hosted on remote servers with a broadband Internet connection and a thin client. However, cloud games are intrinsically more susceptible to latency than...
Projection Devices are one of the most commonly used devices among the technological tools in IT sector. Technological improvement on projection devices occurs concurrently with this rapid spread. As a result of these improvements, some old type devices can be deficient in some cases. In this study; an adaptor that allows transferring high-definition video data and enabling multi user access to use...
This paper describes an autonomous monitoring system to supervise environmental parameters such as temperature, humidity, poisonous gases or smoke concentration, etc. This system is designed as a set of sensor nodes connected via a wireless network. The feature of this system is its ability to autonomously configure the network structure and synchronize data between nodes. This allows the network...
In distributed systems, a group of multiple processes are required to cooperate with each other to achieve some objectives. In this paper, we consider a distributed system where there is o centralized coordinator. Each member process is peer, i.e. each peer has to autonomously make a decision by itself through communicating with other peers in a group. Each peer sends a message to every peer and every...
By introducing a signed-digit (SD) number arithmetic into a residue number system (RNS), arithmetic operations can be performed efficiently. In this paper, a high-speed modulo m SD addition algorithm is proposed, where m\in \{2^n-1, 2^n+1, 2^{2n}+1, 2^n\}. By using the modulo m SD adders, a modulo m SD multiplier can be implemented with a binary adder tree structure. We also present an algorithm for...
The causes of delays in the control circuit of UAV are considered. The necessity of taking into high-speed performance, memory and capacity of digital hardware facilities, realizing the system of autonomous remote control is substantiated.
SOCs designed for embedded systems are now widely used on embedded multimedia devices. Processors in these devices may need capabilities to support some compound computations, and the most important of all is multiply and accumulate (MAC) operation. Thus DSP processors or special ALUs are designed to accelerate these computations. Besides the computation issue, how to improve the reliability, stability...
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