design/am-amplitude-modulation/what-is-am-tutorial.php Radio-Electronics. (n.d.). Retrieved from http://www.radio-electronics.com/info/rf-technology- design/pm-phase-modulation/what-is-psk-phase-shift-keying-tutorial.php Radio-Electronics. (n.d.). Retrieved from http://www.radio-electronics.com/info/rf-technology- design/fm-frequency-modulation/advantages-disadvantages.php Radio-Electronics. (n.d.). Retrieved from http://www.radio-electronics.com/info/rf-technology- design/pm-phase-modulation/what-is-qam-quadrature-amplitude-modulation-tutorial
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Space Representations 4.2.1 Vector Space Concepts 4.2.2 Signal Space Concepts 4.2.3 Orthogonal Expansions of Signals 2 Table of Contents 4.3 Representation of Digitally Modulated Signals 4.3.1 Memoryless Modulation Methods 4.3.2 Linear Modulation with Memory 4.3.3 Non-linear Modulation Methods with Memory – CPFSK and CPM 4.4 Spectral Characteristics of Digitally Modulated Signals 4.4.1 Power Spectra of Linearly Modulated Signals 4.4.2 Power Spectra of CPFSK and CPM Signals (*) 4.4.3 Power
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Frequency Modulation The advantages and disadvantages of frequency‚ and frequency modulation vary from one application to the next. However‚ the frequency modulation choice depends on the applications‚ and system requirements. Knowing the type of system as well as the requirement will help the technician choose the correct form or type frequency modulation to generate to get the required output for use. Comparing‚ and contrasting Amplitude Modulation (AM) to other forms of modulation frequencies
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One Stop for Colleges Education Career Covers complete IITJEE/AIEEE syllabus Chemistry‚ Maths and Physics Sections Its Free Lessons‚ tests by IIT/NIT toppers 1000+ Questions and Sample tests Last minute preparation and help Minglebox Engineering Prep Free Online Preparation for Engineering with Minglebox Engineering Prep. Cover basic concepts of under “Section” for Engineering Entrance Exam Preparation with Study material‚ solved examples and tests prepared
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1) Amplitude Shift keying (ASK) ASK is a modulation technique that related with amplitude of carrier wave being altered or modulated by information signal. When binary ‘1’ is appeared‚ the signal is transmitted and it is stopped when binary ‘0’ is appeared. The binary ‘0’ and ‘1’ are represented the shifting value between the two selected amplitude. 2) Frequency Shift Keying (FSK) FSK is a modulation technique that related with the frequency shifting or changes of carrier signal to transmit the
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In 1945 Arthur C. Clarke wrote an article entitled "The Future of World Communications" for the magazine Wireless World. This article‚ which the editors renamed "Extra-Terrestrial Relays"‚ was published in the October issue. In it Clarke described the properties of the geostationary orbit‚ a circular orbit in the equatorial plane of the earth such that a satellite appears to hover over a fixed point on the equator. The period of revolution is equal to the period of rotation of the earth
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SONET and SDH Signal Hierarchy: How many T-1s are in an OC-1‚ OC-3‚ OC-12‚ or OC- 48?. (2009). Retrieved from http://hubtechinsider.wordpress.com/2009/05/10/the-sonet-sdh-signal-hierarchy-how-many-t-1s-are-in-an-oc-1-oc-3-oc-12-or-oc-48/ Amplitude Modulation. (2012). Retrieved from http://demonstrations.wolfram.com/AmplitudeModulation/ Goleniewski‚ L.‚ & Jarrett‚ K. W. (2007). Telecommunications Essentials. The Complete Global Source (2nd ed.). http://www.thefreedictionary.com/analog. Collins English
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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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Patrick hall and Howard Anderson (2001) Higher national computing‚ newnws publishers‚ pp.480. * Chris Gratton and Ian Jones (2004)‚ Research methods for sport studies‚ Routledge Publishers‚ pp.288. * Citrix (2009) “Orthogonal frequency –division modulation”‚ [internet] available at URL: <http://searchnetworking.techtarget.com/sDefinition/0‚sid7_gci523666‚00.html>‚ [accessed on 2009].
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messages are converted into analog signals that can be sent through the channel. Section 1.1 introduces both encoding and modulation to characterize such conversion of messages into analog signals by a transmitter. Encoding is the process of converting the messages from their innate form (typically bits) into vectors of real numbers that represent the messages. Modulation is a procedure for converting the encoder-output real-number vectors into analog signals for transmission through a physical
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