Problem of Signal Discontinuities in Digital Amplitude Modulator

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F04%3A03098979" target="_blank" >RIV/68407700:21230/04:03098979 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Problem of Signal Discontinuities in Digital Amplitude Modulator

Original language description

This report concerns the digital amplitude modulator and especially the problem of discontinuities of the digitally modulated signal. In contrast to the classical IQ modulator, digital amplitude modulator's input baseband signal is digital. The complex envelope is expressed by its magnitude and phase. The level of distortion depends on the sampling frequency. Therefore high oversampling is often used. On the other hand here are shown cases of low and none oversampling. The modulated signal is then shaped by analog and digital filtration or by only analog filtration respectively. Design of both filters is shown. All simulations are realized for OFDM modulation in program environment Matlab. Modulated signal represents signal of system DRM (Digital RadioMondial).

Czech name

Není k dispozici

Czech description

Není k dispozici

Type

A - Audiovisual production

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

<a href="/en/project/GA102%2F03%2F0451" target="_blank" >GA102/03/0451: Radio and television systems using modulation OFDM</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2004

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

ISBN

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Place of publication

Praha

Publisher/client name

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Version

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Carrier ID

neuvedeno