PPT-Modulation Techniques
Author : phoebe-click | Published Date : 2017-05-19
1 Introduction A digital signal is superior to an analog signal because it is more robust to noise and can easily be recovered corrected and amplified For this reason
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Modulation Techniques: Transcript
1 Introduction A digital signal is superior to an analog signal because it is more robust to noise and can easily be recovered corrected and amplified For this reason the tendency today is to change an analog signal to digital data In this section we describe two techniques . 0 BASIC TECHNIQUE This application note describes a technique for creating an analog to digital converter using a microcontroller with other low cost components Many applications do not require the speed associated with a dedicated hardware AD conver Those light waves may be sent through a transparent medium as a laser beam or con tained within a fiber optic cable The conversion from high frequencyhigh speed electrical signals into light can occur in two general waysapplied directly to the power 2 and 43 of S Haykin and M Moher Introduction to Analog Digital Communications 2nd ed John Wiley Sons Inc 2007 ISBN13 9780471432227 Professor Deepa Kundur University of Toronto Properties of Angle Modulation 2 25 Angle Modulation Phase Modulation By Arne Svensson Fellow IEEE ABSTRACT A major disadvantage with fixed modulation nonadaptive on channels with varying signaltonoise ratio SNR is that the biterrorrate BER probability performance is changing with the channel quality Most applications Husheng Li. The University of Tennessee. Phase and Frequency Modulation. Consider the standard CW signal. We define the total instantaneous angle. Phase and Frequency Modulation. Phase modulation (PM). nalhareqi-2013. 1. Standard Amplitude Modulation (AM). nalhareqi-2013. 2. In the DSP-SC demodulation, a receiver must generate a local carrier in frequency and phase synchronism with the carrier used for modulation.. 1. st. . semster. 1436-1437. King Saud University . College of Applied studies and Community . Service. 1302CT. DSB-SC. Double Side Band Suppress Carrier (DSB-SC) is one type of Amplitude Modulation. Exchange of information from point A to point B. 100001101010001011101. 100001101010001011101. Transmit. Receive. Wireless Communication. Exchange of information from point A to point B. 100001101010001011101. Code division multiple access Steps in CDMA Modulation. CDMA is a spread spectrum multiple access technique. https://store.theartofservice.com/the-modulation-toolkit.html. Code division multiple access Steps in CDMA Modulation. Lecture . 1-7. University of . Mustansiriyah. College of Engineering. Department of Computer Engineering . Lecture 2– 2019/1440. By: Elham Sunbu. OUTLINE. Modulation. Analog Modulation.. AM. FM. PM. Digital Modulation.. Modulation. Operation of varying amplitude, frequency or phase of carrier signal accordingly with the instantaneous amplitude of the message signal.. Binary modulation schemes . ASK. , FSK, . PSK. n. = . 1, . M = 2 (Only Two . output conditions are . possible). Baud . is equal to . the bit . rate. M-. ary. Modulation Techniques. QPSK, 8-PSK, 18-PSK, QAM, 16-QAM. Bryan, G8DKK. Outline. AM and FM Waveforms. FM Transmission. Modulation Frequency. Deviation. Mic Gain . Control. Limiter/Limiting amplifier. Occupied Bandwidth. FM Receivers. Receiver bandwidth (Filters). Prof. Brian L. Evans. Dept. of Electrical and Computer Engineering. The University of Texas at Austin. 15 - . 2. Introduction. Digital Pulse Amplitude Modulation (PAM). Modulates digital information (symbols) onto amplitude of pulse.
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