The frequency characteristic of a raised cosine pulse (satisfying the Nyquist Criterion) is shown below. What is the rolloff factor of this pulse? (a) 0.8 P(f) (b) 1.2 1 0.5 0 (c) 0.2 (d) 0.4 f₁=0.8 1 f₂=1.2 f, MHz →

The frequency characteristic of a raised cosine pulse (satisfying the Nyquist Criterion) is shown below. What is the rolloff factor of this pulse? (a) 0.8 P(f) (b) 1.2 1 0.5 0 (c) 0.2 (d) 0.4 f₁=0.8 1 f₂=1.2 f, MHz →

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.

Question

The frequency characteristic of a raised cosine pulse (satisfying the Nyquist Criterion) is shown
below. What is the rolloff factor of this pulse?
(a) 0.8
P(f)
(b) 1.2
1
0.5
0
(c) 0.2
(d) 0.4
f₁=0.8
1 f₂=1.2
f, MHz →

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