used to store a duplicate of the data‚ the cost per megabyte is high. This level is commonly referred to as mirroring (What is RAID?). c. RAID Level 2‚ which uses Hamming error correction codes‚ is intended for use with drives which do not have built-in error detection. All SCSI drives support built-in error detection‚ so this level is of little use when using SCSI drives (What is RAID?). d. RAID Level 3 stripes data at a byte level across several drives‚ with parity stored on one drive
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CHAPTER 1 INTRODUCTION In this project‚ the wifi hotspot is implemented using HSDPA because of its features like Hybrid ARQ ‚ Adaptive modulation and coding‚ High speed downlink shared channel. This features enhance wifi hotspots to support an evolution towards more sophisticated network and multimedia services‚ the main target of HSDPA is to increase user peak data rates‚ quality of service‚ and to generally improve spectral efficiency for downlink asymmetrical services. HSDPA can achieve
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EC2401- WIRELESS COMMUNICATION QUESTION BANK IV ECE UNIT I SERVICES AND TECHNICAL CHALLENGES Part-A 1. Give any four examples of wireless communication systems. 2. What is a base station? 3. List any four advantages of third generation (3G) mobile networks. 4. Define co channel cells. 5. What are the reasons for choosing Hexagonal cells? 6. Define footprint 7. Define Frequency Reuse 8. What are the advantages of micro cell zone concept? 9. Define cluster. 10. Write the objectives
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CS601: Computer Networks lab EXERCISE - 1 Write a Program in C/ C++ for error detecting code using CRC-CCITT (16 bit) Objective: To enable the receiver of a message transmitted through noisy channel to check whether the message has been corrupted. The aim of an error detection technique is to enable the receiver of a message transmitted through noisy channel to determine whether the message has been corrupted. To do this‚ the transmitter constructs a value called a checksum that is the function
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Ersin Esen and A. Aydin Alatan‚ Member‚ IEEE Abstract—Video data hiding is still an important research topic due to the design complexities involved. We propose a new video data hiding method that makes use of erasure correction capa- bility of repeat accumulate codes and superiority of forbidden zone data hiding. Selective embedding is utilized in the proposed method to determine host signal samples suitable for data hiding. This method also contains a temporal synchronization
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Contents 1 INTRODUCTION 2 BASIC DEFINITIONS 3 FAULTS‚ ERRORS‚ AND FAILURES 4 FAULT DURATION 5 DESIGN TECHNIQUES 6 FAULT-TOLERANT TECHNIQUES 7 TYPES OF REDUNDANCY 8 FAULT-TOLERANT ARCHITECTURE 9 REAL-TIME FAULT-TOLERANT SYSTEMS 10 THE LATENCY PROBLEM 11 APPLICATION AREAS 12 SOFTWARE FAULTS 13 DEPENDABILITY MODELLING 2 5 11 15 19 21 25 33 54 58 62 75 85 1 1 INTRODUCTION Welcome to the ‚ CSE42RFS Real-Time and Fault-Tolerant Systems! Course Objectives Historical Background 2 INTRODUCTION 3 COURSE
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Society has become based solely on the ability to move large amounts of information across vast distances quickly. The natural evolution of computers and this need for ultra-fast communications has caused a global network of interconnected computers to develop. This global network allows a person to send E-mail across the world in mere fractions of a second‚ and enables even the common person to access information world-wide. With the new advancements in technology there must be a set of "rules"
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STATEMENT OF PURPOSE My decision to apply for MIS course at your university is driven by my aspiration to work in a challenging domain‚ where I can put my technical and analytical skills to the best use for the benefit of my company. With computer and the processing of information becoming ubiquitous‚ this field finds a critical place in decision making in organizations. I have a firm belief that this emerging dynamic and challenging management knowledge field will enable me to utilize my skills
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multimedia communications WLAN Wireless Local Area Network PAN Personal Area Network HIPERLAN high-performance radio local area network FEC forward error control BER Bit-Error Rate AWGN Additive White Gaussian Noise 1. Background information Wireless and mobile communications is one of the fastest growing areas of modern life. It has an enormous impact on almost every
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EE 205 Lecture Notes 2012 Combinational Logic Combinational Logic: The outputs depend on the present values of inputs. In other words‚ they are logic combinations of the inputs. Sequential Logic: The outputs depend not only on the present but also on the past inputs. Problem Statement Truth Table min. number of gates min. number of inputs to gates Simplification min. propagation time min. number of interconnections Implementation type of gates Adders Half-adder performs
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