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Article | REF: TE6143 V1

Digital radio - OFDM modulation

Authors: Jean-Noël GOUYET, Sylvie KALINOWSKI

Publication date: August 10, 2013

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1. Single-carrier digital modulations (PSK, QAM )

1.1 General principles

In order to transport information from one point to another, a high-frequency sinusoidal carrier wave (also known as "radio frequency" (RF) (figure 2 ) is used. This wave is characterized by its amplitude A, its pulsation ω 0 (with ω 0 = 2 πf 0 ) and its instantaneous phase :

ω 0 t + j 0

with j 0 phase at origin.

It is written :

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Single-carrier digital modulations (PSK, QAM )
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