in the communication channel every 0.0125 ms and no, communication errors are taken into account, what size signal constellation is needed? c) Can modulation symbols be practically chosen
in the communication channel every 0.0125 ms and no, communication errors are taken into account, what size signal constellation is needed? c) Can modulation symbols be practically chosen
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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The analog signal is sampled at a sampling frequency of 20O0 Hz using a 256 sampling level.
a) How many bits are needed to record a signal lasting 10 seconds?
b) The number of bits calculated above is desired to be transmitted by the digital modulation method in one second. If modulation symbols can be transmitted in the communication channel every 0.0125 ms and no, communication errors are taken into account, what size signal constellation is needed?
c) Can modulation symbols be practically chosen to be arbitrarily short? If not, what, limit their duration? What limits the size of the signal constellation?
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