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Frequency Modulation (FM) Mathematics (m15482)
Author: Ed Doering
Keywords: Bessel function, carrier frequency, FM, frequency modulation, harmonicity ratio, John Chowning, LabVIEW, modulation frequency, modulation index, sidebands, Yamaha DX7
Summary: Frequency modulation (FM) in the audio frequency range can create very rich spectra from only two sinusoidal oscillators, and the spectra can easily be made to evolve with time. The mathematics of FM synthesis is developed, and the spectral characteristics of the FM equation are discussed. Audio demonstrations as implemented ... synthesized spectra.
Subject: Science and Technology
Language: English
Popularity: 96.83%
Revised: 2008-03-18
Revisions: 2
Quadrature Amplitude Modulation (QAM) Experiments Using the National Instruments PXI-based Vector Signal Analyzer (m14500)
Keywords: 3D Eye Diagram, LabView, National Instruments PXI, QAM, Vector Signal Analyzer
Summary: This module discusses the use of National Instruments PXI system for understanding QAM signal transmission. The PXI system discussed here has been configured as a software-defined transmitter/receiver system and is used to implement both a spectrum analyzer and a vector signal analyzer under LabView control. It is thus extremely ... signals work.
Subject: Science and Technology
Language: English
Popularity: 94.40%
Revised: 2007-05-04
Revisions: New
Exploring QAM using LabView Simulation (m14499)
Keywords: LabView, QAM, Quadrature Amplitude Modulation, Simulation
Summary: This module explores the topic of Quadrature Amplitude Modulation (QAM) through the use of National Instrument’s LabView Modulation Toolkit. The QAM Transceiver simulation tool provides an excellent tool for learning about the most important aspects of QAM. This module first reviews basic theory of QAM, and then presents a ... pulse shaping.
Subject: Science and Technology
Language: English
Popularity: 93.16%
Revised: 2007-05-04
Revisions: New
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