DAB‚ DVB Wireless LANs Basic Technology IEEE 802.11a/b/g‚ .15‚ Bluetooth Wireless Transmission frequencies & regulations signals‚ antennas‚ signal propagation multiplexing‚ modulation‚ spread spectrum‚ cellular system Network Protocols Mobile IP Ad-hoc networking Routing Media Access motivation‚ SDMA‚ FDMA‚ TDMA (fixed‚ Aloha‚ CSMA‚ DAMA‚ PRMA‚ MACA‚ collision avoidance‚ polling)‚ CDMA Transport Protocols Reliable transmission Flow control Quality of Service Wireless Telecommunication
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EC2043 WIRELESS NETWORKS UNIT I PHYSICAL AND WIRELESS MAC LAYER ALTERNATIVES PART – A (2 Marks) 1. Name five design consideration in selecting a modulation scheme for a wireless networks. 2. Why is out of band of radiation an important issue in designing modulation scheme? 3. Why is PPM used with IR communication instead of PAM? 4. Name four space diversity techniques. 5. What are the advantages of high efficiency voice band modems
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Wireless LAN Security – A Review Taranpreet Singh (100680826527)‚I.T (6th Sem)‚ S.B.B.S.I.E.T Abstract — Wireless local area network (WLAN) has been widely used in many sectors. The popularity gained is due to many reasons‚ such as ease of installation‚ installation flexibility‚ mobility‚ reduced cost-of-ownership‚ and scalability. However‚ regardless of the benefits mentioned above‚ WLAN have some security threats‚ in which anyone who use it or intend to use it should be aware of. This
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INTERVIEWS COMPETENCY BASED QUESTIONS AN OVERVIEW Presented By Annette Holtom What are they? Why are they used at interviews? How to answer them ANNETTE HOLTOM/PTLLS 2013 2 UNDERSTANDING COMPETENCY QUESTIONS What are they? • Behavioural Questions – designed to test a specific skill/s Why are they used at interviews? • • • Assess suitability for a job Past behaviour in similar situations Past behaviour – indicator for future behaviour How to answer this style of question
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Data Transport in Wireless Networks Akinniyi Ojo‚ Alireza Ranjbar‚ Bastian Arjun Shajit‚ Behzad Savabi‚ Misikir Gebrehiwot‚ Robin Babujee Jerome‚ Setareh Roshan‚ Swapnil Pande Department of Communication Engineering‚ Aalto University School of Electrical Engineering‚ Espoo‚ Finland Abstract— The popularity of wireless networks used to access the Internet is increasing immensely. With huge advancements in the field of wireless technology‚ the Internet has slowly moved from a traditional wired
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As and when the signals are received‚ it will raise an alarm or a warning displaying the necessary message. II. COMPONENTS USED A.Zigbee Wireless Technology: Fig 1: Xbee module In earlier days the application of the wireless technology was limited mostly to simple point to point communication only replacing the cable based communication systems. The entire communication system itself became complex after the introduction
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ABSTRACT Title of Thesis: FREE-SPACE OPTICAL COMMUNICAITONS THROUGH A FOREST CANOPY Clinton Lee Edwards‚ Master of Science‚ 2004 Thesis Directed By: Professor Christopher C. Davis‚ Department of Electrical and Computer Engineering This paper models the effects of the leaves of mature broadleaf trees on air-to-ground free-space optical (FSO) communication systems operating through the leaf canopy. Ecological radiation transfer models are considered and the concept of Leaf Area Index
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Competencies Job Analysis CHAPTER ONE 1.1 Background to the study Organizations continuously change their processes and structures due to the dynamic forces in the environment (Beer‚ 1980). Such forces include; divestiture‚ changes in technology‚ working practices‚ employment legislation‚ and culture (Pearn & Kandola‚ 1998). This transition often means change in employees’ roles and relationships thus the need for systematic job analysis procedures such as competence analysis to remove
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Wireless Network Investigations Introduction The following paper will be prepared so that any team can handle a forensic investigation that has had wireless devices introduced to the crime scene. I will be walking through the steps that a forensic team will take when handling a wireless device. There will be a comprehensive list of each step an investigator will take in the investigative process. By the end of this report the forensic technicians in front of me will
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Cultural Competency in the Workplace Today ’s management in the workforce is composed of all types of people verses thirty years ago when white males held a majority of upper-management positions in companies. These positions are now held by a mixture of ethnic back grounds and women who hold just as many if not more management positions then men. Just by looking at the changes in management demographics shows how important it is for people to understand cultural competency in the workplace. Dr
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