Quadrature amplitude modulation (QAM) ([pic] /ˈkwɑːm/ or /ˈkæm/ or simply "Q-A-M") is both an analog and a digital modulation scheme. It conveys two analog message signals‚ or two digital bit streams‚ by changing (modulating) the amplitudes of two carrier waves‚ using the amplitude-shift keying (ASK) digital modulation scheme or amplitude modulation (AM) analog modulation scheme. The two carrier waves‚ usually sinusoids‚ are out of phase with each other by 90° and are thus called quadrature carriers
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was initially developed for telephone communication. For radio communication‚ a continuous wave radio signal called double sideband amplitude modulation (DSB-AM) was produced. A sideband is a band of frequencies higher (called upper sideband) or lower (called lower sideband) than the carrier frequencies which is a result of modulation. All forms of modulations produce sidebands. In DSB-AM the carrier and both USB and LSB are present. The power usage in this system proved
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Systems EEE F311 Contents 1 Aim of the course‚ what to expect? 2 Course content 3 Instructions about the course 4 Introduction/Discussions Aim of the course … Understanding signals and systems Analog & Digital modulation/transmission techniques Understanding important block-sets of communication system Information theory Analysis of communication systems Recent trends in communication References required B.P. Lathi‚ Modern Digital and Analog
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Running head: THE BASIC CONCEPTS FOR ECONOMIC REASONING The Basic Concepts for Economic Reasoning International Economics Will Bury`s Gose Global Part I Will Bury has invented a technology that gives the option of reading text materials digitally or listening to it with synthetic voice which sound realistic (Will burry`s goes global‚ UOP). In this paper I will explain economic concepts founded in Will Bur’s scenario‚ which will Bury`s have to take some important business decisions
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12e 2 Force Vectors Part 2 Copyright © 2010 Pearson Education South Asia Pte Ltd Chapter Objectives • Cartesian vector form • Dot product and angle between 2 vectors Copyright © 2010 Pearson Education South Asia Pte Ltd Chapter Outline 1. 2. 3. 4. 5. Cartesian Vectors Addition and Subtraction of Cartesian Vectors Position Vectors Force Vector Directed along a Line Dot Product Copyright © 2010 Pearson Education South Asia Pte Ltd 2.5 Cartesian Vectors • Right-Handed
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Basic Accounting Principles and Concepts http://misscpa.com/basic-accounting-principles-and-concepts/ Accounting is called the language of business that which communicates the financial condition and performance of a business to interested users‚ also referred to as stakeholders. In order to become effective in carrying out the accounting procedure‚ as well as in communicating the financial information of the business‚ there is a widely accepted set of rules‚ concepts and principles that
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Directed Line Segment: VECTORS • A line segment with direction is called a directed line segment. • If ‘A’ and ‘B’ are two distinct points in the space‚ then the ordered pair (A‚ B) is called as a directed line segment and is denoted by """""# . ! • In """""# ‚ ‘A’ is called initial point and ‘B’ is called terminal ! point of """""# . ! • The distance from ‘A’ to ‘B’ is called the length or magnitude of """""# . The length or magnitude of """""# ! ! is denoted by ’"""""# ’. Thus
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Check Point: Basic Concept in Positive Psychology * What do researches mean by ‘subjective well-being’? How is this construct measured? What the researchers mean by ‘subjective well-being’ is that it takes a broad view of happiness‚ beyond the pursuit of short-term of physical pleasures defining a narrow hedonism. It is also define as life satisfaction‚ the presence of positive affect‚ and a relative absence of negative affect. ‘Subjective well-being’ is measured by hedonic well-being where
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HL Vectors Notes 1. Vector or Scalar Many physical quantities such as area‚ length‚ mass and temperature are completely described once the magnitude of the quantity is given. Such quantities are called “scalars.” Other quantities possess the properties of magnitude and direction. A quantity of this kind is called a “vector” quantity. Winds are usually described by giving their speed and direction; say 20 km/h north east. The wind speed and wind direction together form a vector quantity
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The Basic Concepts of Transcultural Nursing Transcultural Nursing - A humanistic and scientific area of formal study and practice in nursing which is focused upon differences and similarities among cultures with respect to human care‚ health‚ and illness based upon the people ’s cultural values‚ beliefs‚ and practices‚ and to use this knowledge to provide cultural specific or culturally congruent nursing care to people ... Leininger Leininger (1991) notes the main goal of transcultural
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