Modulation Techniques

May 5th, 2015
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1: Each digital band-pass modulation scheme is defined by a transmitted signal with a unique phasor representation. Lesson 2 : At the receiving end, digital demodulation techniques encompass different forms, depending on whether the receiver is coherent or noncoherent Lesson 3 : Two ways of classifying digital modulation schemes are (a) by the type of modulation used, and (b) whether the transmitted data stream is in binary or M-ary form.

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Modulation TechniquesIntroduction to Analog And Digital CommunicationsSecond EditionSimon Haykin, Michael MoherChapter 7 Digital Band-Pass Modulation Techniques7.1 Some Preliminaries 7.2 Binary Amplitude-Shift Keying 7.3 Phase-Shift Keying 7.4 Frequency-Shift Keying 7.5 Summary of Three Binary Signaling Schemes 7.6 Noncoherent Digital Modulation Schemes 7.7 M-ary Digital Modulation Schemes 7.8 Mapping of Digital Modulation Waveforms onto Constellations of Signal Points 7.9 Theme Examples 7.10 Summary and DiscussionDigital band-pass modulation techniques Amplitude-shift keying Phase-shift keying Frequency-shift keyingReceivers Coherent detection The receiver is synchronized to the transmitter with respect to carrier phases Noncoherent detection The practical advantage of reduced complexity but at the cost of degraded performanceLesson 1: Each digital band-pass modulation scheme is defined by a transmitted signal with a unique phasor representation. Lesson 2 : At the receiving end, digital demodulation techniques encompass different forms, depending on whether the receiver is coherent or noncoherent Lesson 3 : Two ways of classifying digital modulation schemes are (a) by the type of modulation used, and (b) whether the transmitted data stream is in binary or M-ary form. 37.1 Some PreliminariesGiven a binary source The modulation process involves switching ore key

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