communicate using the Dedicated Short Range Communication (DSRC) protocol [3]. The RSU‚ OBU and TA communicate using this protocol which is based on the IEEE 802.11p radio technology. The vehicles can access the wireless channel either using a directional antenna or a unidirectional antenna. Because of this wireless access VANETs are vulnerable to many attacks due to collision‚ eavesdropping‚ interference‚ jamming and other problems. To avoid these attacks only we introduce a concept of security
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frequency range is divided into channels. The data is transmitted on these randomly ordered channels. 3 . . . . . . . . . . . . . . . . . . . . 25 26 27 Frequency 928 MHz The narrowband signal is converted into this DSSS signal for transmission. Direct Sequence Spread Signal 902 MHz Frequency 928 MHz The DSSS signal uses a much lower power density than narrowband inference. When broadband interference is present‚ however‚ the resulting decoded broadband interference
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Personal TV: A Qualitative Study of Mobile TV Users Yanqing Cui1‚ Jan Chipchase2‚ and Younghee Jung2 1 Nokia Research Center Helsinki‚ Ruoholahti‚ 11-13 Itämerenkatu‚ Helsinki 00180‚ Finland 2 Nokia Design Tokyo‚ Shimomeguro 1-8-1 Meguro-ku‚ Tokyo 153-0064‚ Japan {yanqing.cui‚jan.chipchase‚younghee.jung}@nokia.com Abstract. This paper describes a qualitative user study of mobile phone TV usage undertaken during September 2005 and centered on the real world Mobile TV usage of paying subscribers
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A PROJECT REPORT ON A STUDY ON EFFECTIVENESS OF ADVERTISEMENT ON RADIO Submitted in the partial fulfilment of the requirement for the award of the degree of MASTERS IN BUSINESS ADMINISTRATION SUBMITTED TO SUBMITTED BY PRIYANKA GARG EKTA RAWAL (07080003912) (ASSISTANT PROFESSOR) GIBS GITARATTAN INTERNATIONAL
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Name: ________________________ Class: __________ | Carlingford High School 2008 YEAR 12 2 UNIT SENIOR SCIENCE HALF YEARLY EXAM Time Allowed: 2 hours Instructions: * Attempt all questions * Answer all questions in the spaces provided on this paper. SECTION I: Multiple Choice Questions (Q1-15) (15 marks) SECTION II: Extended Response Questions (Q16-29) (65 marks) Name: __________________________ Class: _____________ SECTION I: 15 Multiple Choice
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also creates an interesting perspective on something that is an integral part of life in Zollverein. As an orphan boy growing up in a mining town it would be assumed that once Werner came of age he would begin work in the mines. The Frenchman’s broadcasts allowed Werner to dream of greater things and the radio became a tool for a possible escape from his preordained
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is pulse modulated. Pulse-modulated radar can determine the distance to a target by measuring the time required for an extremely short burst of radio-frequency (r-f) energy to travel to the target and return to its source as a reflected echo. Directional antennas are used for transmitting the pulse and receiving the reflected echo‚ thereby allowing determination of the direction or bearing of the target echo. Once time and bearing are measured‚ these targets or echoes are calculated and displayed
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PTU/BOS/EC/101/08-05-2004/BATCH 2004 Punjab Technical University‚ Jalandhar B.Tech. Electronics & Communication Engg. Study scheme 3rd Semester Course code AM-201 EE-201 EC-201 EC-203 Course Title Applied MathematicsIII Network Analysis & Synthesis Electronics Devices & Circuits Electronic Measurement & Instrumentation L 4 3 3 3 T 1 2 1 1 P 0 0 0 0 Int. 40 40 40 40 Ext. 60 60 60 60 TOTAL 100 100 100 100 Object Oriented CS –252 Programming using C++ Lab.-I (Electronic EC-205 Devices & Networks)
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that used in some electric energy as a source like the electric vehicles (EVs). We can use this energy transfer as a charger to EVs by microwave beams and laser beams to realize the remote energy supply using directional antenna. However when there is a obstruction in the path the transmission of power may dissipate ‚ and also is dangerous to human bodies and other organisms. So the basic theory of this technology is that two separate coils with some resonance frequency possible to form a resonance
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The role of telecommunication in our life Telecommunication plays an important role in our life today. Generally telecommunication is the transmission of signal over a distance for purpose of sending information. By sharing information‚ human can get such a development today. information is even considered to be one of standard criteria to assess life quality of a man. Life quality of a man is assessed according to the amount of information he get and means of approaching information. In earlier
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