Analysis of Intermodulation Distortion in OFDM Based Transmitter Using EER Technique

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F16%3A00301060" target="_blank" >RIV/68407700:21230/16:00301060 - isvavai.cz</a>

Result on the web

<a href="http://www.radioeng.cz/fulltexts/2016/16_02_0390_0398.pdf" target="_blank" >http://www.radioeng.cz/fulltexts/2016/16_02_0390_0398.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13164/re.2016.0390" target="_blank" >10.13164/re.2016.0390</a>

Result language

angličtina

Original language name

Analysis of Intermodulation Distortion in OFDM Based Transmitter Using EER Technique

Original language description

During the last two decades, new digital modulation systems have appeared in the audio broadcasting. Such broadcasting systems require new transmitters’ concepts to enable the transmission of digitally modulated signals. Moreover, the selected modulation schemes (e.g. orthogonal frequency division multiplexing) require a high linearity power stage, which typically exhibits low efficiency due to high peak-to-average power ratio of the modulated signal. One of the promising transmitter concepts is the Kahn envelope elimination and restoration technique, where the original Cartesian in-phase and quadrature baseband signals are transformed to the envelope and phase signals. The main advantage of this technique is an ability to employ suitable types of highly efficient amplitude modulation transmitters for envelope amplification, while the phase modulated carrier is produced by an additional phase modulator. The substantial drawback of envelope elimination and restoration is nonideal recombination of linearly distorted amplitude signal and phase modulated carrier at the output power stage. The aim of this paper is twofold. Firstly, to analyze the effect of the envelope and phase signals bandwidth limitation on the modulated signal in-channel distortion and out-of-channel emission. Secondly, to present the performance results as a reference for transmitter designers to properly set the envelope and phase paths to reach required in-channel signal quality and suppress out-of-channel products.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

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

Name of the periodical

Radioengineering

ISSN

1210-2512

e-ISSN

—

Volume of the periodical

25

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

9

Pages from-to

390-398

UT code for WoS article

000377231900022

EID of the result in the Scopus database

2-s2.0-85015655865