IOSR Journal of Engineering

Displaying 441-480 of 481 results

  • White Papers // Apr 2012

    Performance Analysis for Different Interleavers in Various Modulation Schemes With OFDM Over an AWGN Channel

    The next generation wireless communications systems need to be of a higher standard in order to provide the customers with the multitude of high quality services they demand. In recent years, Orthogonal Frequency Division Multiplexing (OFDM) has been successfully used in terrestrial digital video broadcasting and showed it is a...

    Provided By IOSR Journal of Engineering

  • White Papers // Apr 2012

    Secure Data Entry in Operational Systems for Data Warehouse

    A 'Data warehouse' is a repository of an organization's electronically stored data. Emergence of huge data warehouses has also put a big challenge in these data entry processing systems. Data warehouses contain a wide variety of data that present a coherent picture of business conditions at a single point in...

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  • White Papers // Apr 2012

    Secured Transaction with Efficient Mining and Prediction in Mobile Commerce

    In this paper, the authors explore a new data mining capability and security for a mobile commerce environment. M-commerce is a major application domain for mobile devices, enabling users to perform commercial transactions wherever they go. However, these applications require a high level of security. To achieve effective mobile commerce...

    Provided By IOSR Journal of Engineering

  • White Papers // Apr 2012

    A VHDL Implementation of Low Power Virus Detection Processor

    Now-a-days, mobile handsets combine the functionality of mobile phones and PDAs. Unfortunately, mobile handsets development process has been driven by market demand, focusing on new features and neglecting security. So, it is imperative to study the existing challenges that facing the mobile handsets threat containment process, and the different techniques...

    Provided By IOSR Journal of Engineering

  • White Papers // Apr 2012

    Simulation Based Comparative Performance Study of AODV, DSR and ZRP in Mobile Ad Hoc Networks (MANETs) Using Qualnet 5.0.2

    A Mobile Ad-hoc NETwork (MANET) is a collection of wireless mobile nodes forming a temporary network without using any centralized access point, infrastructure, or centralized administration of the mobile networks .Data transmission between two nodes requires multiple hops as nodes transmission range is limited in Mobile Ad-hoc NETworks (MANET's). Mobility...

    Provided By IOSR Journal of Engineering

  • White Papers // Apr 2012

    Implementation of Unified Architecture of 802.11a and 802.16a PHY Layers Using Verilog HDL (R & D)

    WiFi and WiMAX are the well developed and standardized technologies working on OFDM platform. Their physical layer architecture are much similar accept WiMAX physical layer has RS encoder & decoder at transmitter and receiver respectively. WiFi and WiMAX are widely used wireless technologies for accessing internet. This paper elaborates the...

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  • White Papers // Apr 2012

    Minimization of Time & Cost Factors with Optimized Program-States Using Exception-Handling Constructs in Java (During Analysis and Testing of Programs)

    It has been observed that 80% of development time and a lots of memory space is spend over handling the abnormal conditions and exceptions in any programming environment. It also affects the cost factor of program development also. The support for precise exceptions in optimizing Java program states, combined with...

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  • White Papers // Apr 2012

    Performance of TCP, UDP and SCTP on Sensor Network with Different Data Reporting Intervals

    The performance of the congestion control algorithms of most of the reliable transport protocol of internet, particularly wireless networks and mobile ad-hoc networks, are not satisfactory under a high density sensor network applications, since they are designed mainly for wired networks and not for sensor networks. In this paper, the...

    Provided By IOSR Journal of Engineering

  • White Papers // Apr 2012

    Throughtput Competitive Advance Reservation Using Polynomial Time

    In response to the high throughput needs of grid and cloud computing applications, several production networks have recently started to support advance reservation of dedicated circuits. An important open problem within this paper is to devise advance reservation algorithms that can provide provable throughput performance guarantees independently of the specific...

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  • White Papers // Apr 2012

    Information Integration for Heterogeneous Data Sources

    Information retrieval from heterogeneous information systems is required but challenging at the same as data is stored and represented in different data models in different information systems. Information integrated from heterogeneous data sources into single data source are faced upon by major challenge of information transformation-were in different formats and...

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  • White Papers // Apr 2012

    Integrating Virtual Reality in Education Using Intranet Grids

    In recent years there has been increase in diverse views in relation to the use of Virtual Reality (VR) to enhance learning and cognition. Besides, there has been significant growth in the use of 3D virtual worlds for e-learning and distance education. On the other hand, the advent of grid...

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  • White Papers // Apr 2012

    Optimized Self Reconfigurable Wireless Mesh Networks

    Wireless Mesh Networks (WMNs) are being developed actively and deployed widely for a variety of applications, such as public safety, environment monitoring, and citywide wireless Internet services. They have also been evolving in various forms e.g., using multiradio/channel systems to meet the increasing capacity demands by the above-mentioned and other...

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  • White Papers // Apr 2012

    An Analysis of Optimum Software Quality Factors

    Software quality has emerged as pivotal aspects of any software development process. Quality of software depends on the process followed during its development. Factors affecting the quality of software are identified from among the quality models, on the basis of the most common, crucial and critical ones. Further, understanding of...

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  • White Papers // Apr 2012

    Semantic Web Crawler Based on Lexical Database

    Crawlers are basic entity that makes search engine to work efficiently in World Wide Web. Semantic concept is implied into the search engine to provide precise and constricted search results which is required by end users of Internet. Search engine could be enhanced in searching mechanism through semantic lexical database...

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  • White Papers // Apr 2012

    Evaluation of Green Supply Chain Management Strategies Using Fuzzy AHP and TOPSIS

    In this paper, the authors present a new decision making approach for group multi-criteria evaluation for green supply chain management strategies, which clubs green procurement, manufacturing, green service to customer and environmental management process with order allocation for dynamic supply chains to cope market variations. More specifically, the developed approach...

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  • White Papers // Apr 2012

    Detecting and Prevention Cross -Site Scripting Techniques

    Cross-site scripting is one of the main problems of any Web-based service. Since Web browsers support the execution of commands embedded in Web pages to enable dynamic Web pages attackers can make use of this feature to enforce the execution of malicious code in a user's Web browser. To augment...

    Provided By IOSR Journal of Engineering

  • White Papers // Apr 2012

    Hidden Web Indexing Using HDDI Framework

    There are various methods of indexing the hidden web database like novel indexing, distributed indexing or indexing using map reduce framework. The authors' goal is to find an optimized indexing technique keeping in mind the various factors like searching, distribute database, updating of web, etc. Here, they propose an optimized...

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  • White Papers // Apr 2012

    New Trends in Real Time Operating Systems

    Most of today's embedded systems are required to work in dynamic environments, where the characteristics of the computational load cannot always be predicted in advance. Still timely responses to events have to be provided within precise timing constraints in order to guarantee a desired level of performance. Hence embedded systems...

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  • White Papers // Apr 2012

    Best Information Search Using Probabilistic Flooding in Unstructured Peer-to-Peer Networks

    The "Peer-To-Peer" (P2P) networks refer to a class of systems and applications that employ distributed resources to perform a function in a decentralized manner. Unstructured Peer-To-Peer networks do not impose any structure on the overlay networks. Peers in these networks connect in an ad-hoc fashion. Ideally, unstructured P2P systems would...

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  • White Papers // Apr 2012

    SEP Performance of MFSK in Rician Fading Channel Based on MGF Method

    Symbol Error Probability (SEP) of non-coherent frequency shift keying over slow flat Rician fading channel is calculated with Maximal Ratio diversity Combining (MRC) technique using Moment Generating Function(MGF). The authors assume that channel side information is known to the receiver. Error performance plots of modulation technique has been drawn for...

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  • White Papers // Apr 2012

    An Analytical Approach to S-Box Generation

    The concept of concealing the meaning of a message from all but the intended recipients is the job of a crypto system. The development of digital computers allowed the complexity of encryption algorithms to increase and to be used in a wide range of applications, including civilian use. This paper...

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  • White Papers // Apr 2012

    Implementation of Fault Tolerant Architecture in Decentralized Intrusion Detection System

    The aim of this paper is to detect anomalous usage of legitimate applications by authorized users in Windows environment and to implement a fault - tolerant architecture which can continue providing detection service even in case of failure of one or more detecting servers. This paper also aims to implementing...

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  • White Papers // Apr 2012

    2x2 Array Multiplier Based on DCVS Logic

    The Array architecture is a popular technique to implement the multipliers due to its compact structure. In this paper, 2x2 array multiplier circuits using existing full adder and DCVS logic full adder have been designed, simulated, analyzed and compared. An extensive analysis of multipliers has been done. According to the...

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  • White Papers // Apr 2012

    Efficient Implementation of Ogg Vorbis Decoder Using Soft Core Processor

    In this paper, the authors describe a design of Ogg vorbis decoder for an embedded platform. Ogg vorbis is an audio compression format developed by the Xiph.Org foundation, a non-profit organization working in the area of Internet multimedia technology. Since ogg vorbis decoding process incurs high computational complexity, a software...

    Provided By IOSR Journal of Engineering

  • White Papers // Apr 2012

    Video Surveillance Based Traffic Monitoring System

    Visual analysis is concerned with detection and analysis of a target object in a sequential stream of images. While many algorithms are successful to detect objects effectively in controlled environments, they get bugged with the variations of the object's appearance or with the surrounding change. The ability to reliably detect...

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  • White Papers // Mar 2012

    Enhance Accuracy in Software Development's Planning & Estimation Process by Adopt Uncertainty Analysis and Assessment" in the System Modeling Process" - A Review

    In the process of software project development prediction of effort and estimate it is very challenging task. So it is referred as intricate "Brain tester". Though the authors have several cost and effort estimating method. They are not got success to find a method which will give accurately estimation of...

    Provided By IOSR Journal of Engineering

  • White Papers // Mar 2012

    Android Speech to Text Converter for SMS Application

    The mobile phone users are increase day by day and everyone wants to develop new things which are improved version of existing one. The SMS user might want the faster SMS technology which can convert their voice into text and SMS will be transferred. This paper is based on evaluating...

    Provided By IOSR Journal of Engineering

  • White Papers // Mar 2012

    New Approach For Time Efficent Backup and Restore on on-line Server using Android Platform

    While many solutions for making backup and restoring data are known for servers and desktops, mobile devices pose several challenges, mainly due to the differentiating in devices, vendors, operating system and version available in mobile market. The authors introduce a new backup and restore approach for mobile devices, which helps...

    Provided By IOSR Journal of Engineering

  • White Papers // Mar 2012

    Indexing of Query on Spatial Data in P2P Systems

    Peer-To-Peer technology plays an important role in spatial data sharing .In spatial P2P each peer stores part of the available spatial information and runs software with equivalent functionality rather than through a central server. Spatial P2P is dynamic in nature. Spatial objects are having distinct properties like identity location and...

    Provided By IOSR Journal of Engineering

  • White Papers // Mar 2012

    Mitigating Denial-of-Service Attacks Using Genetic Approach

    Denial-of-Service attacks are considered as very dangerous. These attacks have crashed many computers on internet recently. Detecting Denial-of-Service (DoS) attacks has been a difficult problem to solve. Security of computers from DoS attacks has become a crucial issue. Recognition of attacks is becoming a harder problem to crack in the...

    Provided By IOSR Journal of Engineering

  • White Papers // Mar 2012

    Effect of Noise on image steganography based on LSB insertion and RSA encryption

    This project simulates an effective data hiding technique i.e. steganography based on LSB insertion and RSA encryption in order to provide seven million times better security about hidden data, than the previous work. The main idea of proposed scheme is to encrypt secret data by RSA 1024 algorithm, convert it...

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  • White Papers // Mar 2012

    Implementing Remote Data Integrity Checking Protocol for Secured Storage Services with Data Dynamics and Public Verifiability In Cloud Computing

    Cloud computing aims to enable end-users to easily create and use software without a need to worry about the technical implementations and nitty-gritties such as the software's physical hosting location, hardware specifications, efficiency of data processing. Recently many works focus on providing data dynamics and/or public verifiability to the protocols...

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  • White Papers // Feb 2012

    Performance Analysis of Different M-ARY Modulation Techniques Over Wireless Fading Channel

    Cellular communication systems are the most widely used wireless communication systems. It is the people primary need today to achieve the higher data rates in limited spectrum bandwidth to improve the performance of signals. The authors know digital communication system outperforms analog ones in terms of noise performance and flexibility....

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  • White Papers // Feb 2012

    Data Link Control in Data Communication

    DLC is the service provided by the Data Link layer of function defined in the Open Systems Interconnection OSI model for network communication. The Data Link layer is responsible for providing reliable data transfer across one physical link (or telecommunications path) within the network. Technical communication systems are developed to...

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  • White Papers // Feb 2012

    A Review on Designing of the Dual Reflector Axially Symmetric Cassegrain Antenna

    Dual reflector antennas are considered as pencil beam antennas that can produce radiation identical to searchlight. Cassegrain Reflector Antenna Design consists of various effects caused by blockage by primary feed or by the sub-reflector and its effect on overall performance. The objective of the paper is to provide the overview...

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  • White Papers // Feb 2012

    Low Power H.264 Video Compression Achitecture for Mobile Communication

    This paper presents a method to reduce the computation and memory access for variable block size Motion Estimation (ME) using pixel truncation. Previous work has focused on implementing pixel truncation using a fixed-block size(16?16 pixels) ME. However, pixel truncation fails to give satisfactory results for smaller block partitions. In this...

    Provided By IOSR Journal of Engineering

  • White Papers // Jan 2012

    An Actual Communication Network Performance Evaluation Method

    The queuing system and network theories may be hardly applied to solve performance evaluation problems for actual large-scale computer systems and networks. This is true especially for high performance communication networks such as wireless, satellite or photonic networks. The reason is that the theoretical assumptions can hardly be fulfilled in...

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  • White Papers // Nov 2011

    A New Algorithm to Find Best Splitting Criteria for Web Page Classification

    Web is popular as the availability of data is vast. It contains several billions of HTML documents, pictures and other multi media files. These documents reside on Internet servers and the information-exchange can be done through HTTP protocols. Individual HTML files having unique address is called Web page and collection...

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  • White Papers // Nov 2011

    Rapid Growth of Customer Use and Adoption of the Broadcasting Agent and Receivers: A Driving M-Commerce Factor

    The success of M-commerce credit goes to the M-commerce driving factors. The driving factor instruct that the factor which is responsible and necessary for enabling the M-commerce. There are Radio broadcasting, telephone broadcasting, television broadcasting, cable radio broadcasting, satellite broadcasting and web casting considering as broadcasting agent. It is observed...

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  • White Papers // Nov 2011

    Evaluation of UWB Interference on WiMAX

    This paper describes the analysis of UWB interference on WiMax systems. Co-existence between these two systems is important due to unlicensed use of 3.1 to 10.6 GHz frequency band by UWB. The interference impact of UWB devices entirely depends on the victim receiver characteristics. From the knowledge of noise density...

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  • White Papers // Feb 2013

    Energy Saving in Wireless Sensor Network Using Burst Algorithm

    A wireless sensor network is composed of a large number of low-cost devices distributed over a geographic area. Sensor nodes have limited processing capabilities therefore simplified protocol architecture should be designed so as to make communications simple and efficient. Moreover, the power supply unit is based on an energy-limited battery...

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  • White Papers // Oct 2012

    A Printed Microstrip Antenna for RADAR Communication

    A single layer, single feed compact slotted patch antenna is thoroughly simulated in this paper. Resonant frequency has been reduced drastically by cutting two different slots. The first one is the combinations of two triangular and another rectangular slot at the upper right corner and rest is bilateral triangle at...

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  • White Papers // Oct 2012

    A Literature Survey on Performance of Free Space Optical Communication Links Under Strong Turbulence

    Free space optical communication has widespread use because of its advantages such as high modulation bandwidth, enhanced security and low power. In free space optical communication, laser beam signals are transmitted through air. Due to atmospheric turbulence, signals are affected. This atmospheric turbulence leads to fading of the channel. The...

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  • White Papers // Oct 2012

    To Study the Characteristics of Low Base Station Antenna in Respect of Propagation Loss

    The environment between the transmitter and receiver in a wireless communication system has a significant effect on the performance and to maintain quality of service of the system. Propagation loss is an important element which must be kept within predefined range in order to get expected performance of the system....

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  • White Papers // Oct 2012

    A Novel Octagonal UWB Antenna for Cognitive Radio

    This paper presents about a new antenna design of ultra wide band antenna for cognitive radio wireless communication. This antenna consists of an irregular octagon (polygon with 8 sides) aperture on a printed circuit board; ground plane. This antenna was simulated in ADS (Advanced Design System) Momentum. The feeding point...

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  • White Papers // Oct 2012

    A Dynamic Network Reconstruction Approach Using ACO

    Energy efficiency and reliability are always the main concern in wireless sensor networks. In a sensor network the nodes are present with limited energy and with each transmission they loss some energy. It is required to minimize the rerouting to save the energy loss. The authors proposed an algorithm to...

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  • White Papers // Oct 2012

    A Review on Substrate Integrated Waveguide and Its Microstrip Interconnect

    Substrate Integrated Waveguides (SIW) are used for transmission of Electromagnetic waves. They are planar structures belonging to the family of Substrate Integrated Circuits. Because of their planar nature, they can be fabricated on planar circuits like Printed Circuit Boards (PCB) and can be integrated with other planar transmission lines like...

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  • White Papers // Oct 2012

    To Study the Effect of Center Frequency and Bandwidth on Quality Factor of Microstrip Interdigital Bandpass Filter

    Bandpass filter is a device that can be used in both transmitter and receiver in several communication systems, such as mobile phones, terrestrial network, satellite communication and many other applications. In this paper inter-digital bandpass filter with under coupled quarter wavelength resonator is proposed. In this paper, the authors studied...

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  • White Papers // Oct 2012

    Multiband Microstrip Patch Antenna for Microwave Applications

    In this paper, the authors present a fractal shape slot based patch antenna for multiband operations. The fractal shape slot is designed on the rectangular patch and the antenna is fed through a microstrip line. The proposed design and feeding technique allows the antenna to operate at multiple frequencies in...

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  • White Papers // Dec 2012

    Investigation of Dual Meander Slot to Microstrip Patch Antenna

    A dual microstrip meander slot antenna is presented for Wireless Local Area Network (WLAN) application. The proposed antenna comprises a rectangular microstrip patch element embedded with two meander slots. The parametric study is performed to investigate the characteristic of microstrip patch antenna with double meandered slots compared to the same...

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  • White Papers // Dec 2012

    Implementation of ALU Using Asynchronous Design

    Power consumption has become one of the biggest challenges in design of high performance microprocessors. In this paper, the authors present a design technique using GALs (Globally-Asynchronous Locally-Synchronous) for implementing asynchronous ALUs, which aims to eliminate the global clock. Here ALUs are designed with delay insensitive dual rail four phase...

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  • White Papers // Feb 2013

    Embedded Ethernet Interface Using Arm Processor

    Currently device with microcontroller has been widely used in industrial field. However, a large number of devices don't have the network interface and the data from them cannot be transmitted in network. A design of ARM processor-based embedded Ethernet interface is presented. In the design, an existing SPI serial device...

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  • White Papers // Feb 2013

    A Novel Compact CPW- Fed Antenna for ULTRA WIDEBAND Applications

    RECENTLY, with the rapid development of wireless communication systems for local access networks including Personal Digital Assistants (PDA), portable PCs, and Bluetooth, the need for low profile and compact antenna has been on the rise. The demand was increased day by day in wireless communication, especially for the ULTRA WIDEBAND...

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  • White Papers // Feb 2013

    Reconfigurable Microstrip Patch Antenna Using MEMS Technology

    This paper proposes the design of a Reconfigurable Micro Strip Patch Antenna Using MEMS Technology A Reconfigurable Microstrip patch antenna of operating frequency in the range of 5-8 GHz (CBand), for the application of wireless communication has been designed. The term Re-configurability refers that it adaptively changes its characteristics. A...

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  • White Papers // Feb 2013

    DFT Based MMSE Equaliser in MIMO-OFDM

    MIMO-OFDM is considered as a fast growing technology now days. OFDM is a multi carrier modulation technique in which the carriers are Orthogonal to each others as a result of which it provides high bandwidth efficiency and multiple carriers share the data among themselves. During the research equalizer is always...

    Provided By IOSR Journal of Engineering

  • White Papers // Feb 2012

    Low Power H.264 Video Compression Achitecture for Mobile Communication

    This paper presents a method to reduce the computation and memory access for variable block size Motion Estimation (ME) using pixel truncation. Previous work has focused on implementing pixel truncation using a fixed-block size(16?16 pixels) ME. However, pixel truncation fails to give satisfactory results for smaller block partitions. In this...

    Provided By IOSR Journal of Engineering

  • White Papers // Dec 2012

    A Mobile Robot Navigation System Using RFID Technology

    Skilled navigation in mobile robotics usually requires solving two problems pertaining to the knowledge of the position of the robot, and to a motion control strategy. When no prior knowledge of the environment is available, the problem becomes even more challenging, since the robot has to build a map of...

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  • White Papers // Dec 2012

    Cloud Deployment Model and Cost Analysis in Multicloud

    Cloud computing is a revolution in the way it offers computational capability. The information technology organizations do not need to oversize the infrastructure anymore, potentially reducing the cost of deploying a service. The two main objective of this paper is to study a cloud deployment model which involves user, broker,...

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  • White Papers // Dec 2012

    Gain Enhancement of Circular Microstrip Patch Antenna Using Dual-FSS Superstrate Layer for ISM Band

    In this paper, an effort is made to optimize the gain to show better performance analysis on the basis of design and simulation results by implementing FSS structured superstrate layer with circular microstrip patch antenna at operating frequency of 5.8 GHz for ISM Band applications. In this proposed antenna, co-axial...

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  • White Papers // Dec 2012

    Performance Improvement of OFDM Using Subcarrier Frequency Diversity

    Orthogonal Frequency-Division Multiplexing (OFDM) uses a large number of closely spaced orthogonal sub-carrier signals to carry data. The orthogonality allows for efficient modulator and demodulator implementation using the Fast Fourier Transforms (FFT) algorithm on the receiver side, and inverse FFT on the sender side. The primary advantage of OFDM over...

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  • White Papers // Dec 2012

    Design and Implementation Based on Amba4.0 of Apb Bridge

    ARM introduced the Advanced Microcontroller Bus Architecture (AMBA) 4.0 specifications which includes Advanced eXtensiable Interface (AXI) 4.0. AMBA bus protocol has become the de facto standard SoC bus. That means more and more existing IPs must be able to communicate with AMBA4.0 bus. Based on AMBA 4.0 bus, the authors...

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  • White Papers // Oct 2012

    Synthesis of Linear and Circular Array Antennas Using Gatool

    The main aim of this paper is to reduce the first four Side Lobe Levels (SLLs) of the linear and circular array antennas using gatool, which is the one of the simplest and efficient tool in MATLAB. This is employed in Radars and communications in order to reduce jamming effects,...

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  • White Papers // Oct 2012

    Design and Performance Analysis of Log Periodic Dipole Antenna at Uhf Band

    The paper described the design and performance analysis of log periodic dipole antenna at frequency 1800MHz -2500MHz (Ultra High Frequency Band), the antenna has been modeled using ADS layout and the S parameter was presented. A good impedance match in a wide frequency range has been achieved by a suitable...

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  • White Papers // Oct 2012

    An Investigation Into the Performance Enhancement and Salient Features of AMR-WB Speech Codec Used in GSM Communication

    The 3rd Generation Partnership Project (3GPP) along with European Telecommunication Standard Institute (ETSI) recommended new speech coding scheme, called Adaptive Multi Rate (AMR) in 2000 and 2001. The proposed scheme has two variants: AMR-Narrowband (AMR-NB) and AMR-WB (AMR-WideBand). The speech quality of AMR-WB in GSM systems is remarkably high compared...

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  • White Papers // Oct 2012

    Adaptive Beam Forming Using KLMS, KRLS and CGM Algorithms

    In this paper adaptive beam forming using KLMS, CGM and KRLS algorithm has been proposed. In CGM algorithms has reduced the interference and convergence is better when number of antennas increased. In CGM algorithm the weight of antenna arrays can be adjusted to form certain amount of adaptive beam to...

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  • White Papers // Oct 2012

    Peak-To - Average Power Ratio Reduction of Ofdm Siganls

    Orthogonal Frequency Division Multiplexing (OFDM) is a form of multicarrier modulation technique with high spectral efficiency and immunity to interference. Despite of many advantages the main disadvantage of OFDM is that the time domain of OFDM signal which is a sum of subcarrier sinusoids leads to high Peak-to-Average Power Ratio...

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  • White Papers // Oct 2012

    Identification and Modeling of Dominant Causes of Congestion in a Cellular Network

    In telecommunications networks, congestion is the condition that arises when a system or a network experiences a level of offered calling activity or message traffic that exceed its capacity. In data networks, congestion occurs when the number of packets being transmitted through the network approaches the packet handling capacity of...

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  • White Papers // Oct 2012

    Efficient Implementation of Fast Fourier Transform Using NOC

    In this paper, improved algorithms for radix-8 FFT are presented. Various schemes have been proposed for computing FFT. It has Different target domains of applications and different tradeoffs between flexibility and performance. Typically, they need reconfigurable array of processing elements .The applications have been restricted to domains based on floating...

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  • White Papers // Oct 2012

    Efficient Security for Mobile Ad-Hoc Network

    An ad-hoc network is a dynamically changing network of mobile nodes that communicate without the support of a fixed network. Due to lack of centralized control, secured communication in mobile Ad-hoc network is important matter due to dynamic nature of the network topology. MANETs is affected by new security problems...

    Provided By IOSR Journal of Engineering

  • White Papers // Oct 2012

    An Ftp Implementation With Arm Processor and Gprs for Real Time Applications

    In this paper, the authors present the principles of a low-cost Internet-based data processing system. The main h e a r t of the system is an embedded hardware (ARM 9) running with a Linux OS. The embedded device communicates through General Packet Radio Service (GPRS) module, which makes it...

    Provided By IOSR Journal of Engineering

  • White Papers // Oct 2012

    Adaptive Selective State-Transition Decoding: A Combined Approach for Trellis Coded Modulation Scheme

    The authors are presenting a new suboptimum decoding strategy, namely, Adaptive Selective State-Transition Decoding (ASSTD) for Trellis Coded Modulation schemes transmission over band-limited ISI channels. The ASSTD is a combined approach provides an improved error performance over Reduced State Sequence Estimation (RSSE) techniques which are in practical use. The ASSTD...

    Provided By IOSR Journal of Engineering

  • White Papers // Feb 2013

    Performance Analysis of Empirical Propagation Models for WiMAX in Urban Environment

    This paper presents a simulation study of different path loss empirical propagation models with measured field data in urban environment. The results are different if they are used in different environment other than in which they were designed For comparative analysis the authors use the Free Space path Loss model,...

    Provided By IOSR Journal of Engineering

  • White Papers // Feb 2013

    Performance Evaluation of Uncoded Adaptive OFDM System Over AWGN Channel

    The demand for high-speed mobile wireless communications is rapidly growing. OFDM technology promises to be a key technique for achieving the high data capacity and spectral efficiency requirements for wireless communication systems of the near future. It is adopted as a standard for HYPERLAN & IEEE 802.11. It offers considerable...

    Provided By IOSR Journal of Engineering

  • White Papers // Feb 2013

    Simulation of Rectangular Patch Antenna With Jeans Substrate

    There has been growing interest in researchers to merge wearable system technology with textile-technology. Utilization of textile material for development of antenna has been rapid due to wearable computing. A wearable antenna is meant to be a part of clothing used for communication purpose such as Tracking and navigation, health...

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  • White Papers // Feb 2013

    Stacked Multiband Microstrip Antenna

    In microstrip antenna research a new trend is found where the researchers improve antenna characteristics by introducing different structures within the antenna geometry. With the development of computational electromagnetic new approaches of analysis has become another branch of activity. This paper presents a design of stacked patch configuration of microstrip...

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  • White Papers // Feb 2013

    Study of Protocols (AODV, DSR)of MANET(Mobile Ad-Hoc Network)& Black Hole Attack InAODV

    Mobile Ad-hoc NETwork (MANET) is an autonomous system of mobile nodes connected by wireless links. Due to Open medium, dynamic topology, distributed cooperation, ad-hoc networks are vulnerable to many types of security attacks. Black hole attack is one of the severe security threats which can be easily employed by exploiting...

    Provided By IOSR Journal of Engineering

  • White Papers // Feb 2013

    Towards New Interfaces at Multitouch Technology

    In today's society, the way in which the people physically interact with electronic devices is changing how they are focused in their technological research. This change has led to many great advances, including the development of new interfaces at multi touch technology. Through the use of these new interfaces, the...

    Provided By IOSR Journal of Engineering

  • White Papers // Feb 2013

    Wireless Embedded Data Acquisition System for Mobile Applications

    This paper presents an interactive way to acquire the parametric data of moving application using of GPRS services. The total system is incorporated in the mobile application like car, bus, etc. The embedded system is designed with the help of microcontroller and user interface devices. The acquisition of the present...

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  • White Papers // Feb 2013

    Surveillance on Manycasting Over Optical Burst Switching (OBS) Networks Under Secure Sparse Regeneration

    In wavelength-routed WDM optical networks requires regeneration for few light paths, when the strength of optical signal reduced and also security and privacy are essential before Optical Burst Switching (OBS) networks can become an everyday reality. Many-casting is a communication paradigm to implement the distributed applications. In many-casting, destinations can...

    Provided By IOSR Journal of Engineering

  • White Papers // Feb 2013

    Improving Energy Efficiency Using LEARN Algorithm for Wireless Sensor Networks

    A number of energy-aware routing protocols were proposed to seek the energy efficiency of routes in Multihop wireless networks. Among them, several geographical localized routing protocols were proposed to help making smarter routing decision using only local information and reduce the routing overhead. However, all proposed localized routing methods cannot...

    Provided By IOSR Journal of Engineering