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ge 400 Hz to 4000HZ assigned for data mmunications. A signal with 170 milliwatts ver passes through 4 devices, each with an erage noise of 1.4 microwatts. What is the SNR

ge 400 Hz to 4000HZ assigned for data mmunications. A signal with 170 milliwatts ver passes through 4 devices, each with an erage noise of 1.4 microwatts. What is the SNR

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Q2.a) Consider a telephone line with a frequency range 400 Hz to 4000HZ assigned for data communications. A signal with 170 milliwatts power passes through 4 devices, each with an average noise of 1.4 microwatts. What is the SNR in dB? Q2.b) Given, the power of a signal is 1941 mW which is passing through a channel with frequencies ranging from 1GHZ to 889MHZ and the power of the noise is 3942 pW. How many signal levels are there?
Transcribed Image Text:Q2.a) Consider a telephone line with a frequency range 400 Hz to 4000HZ assigned for data communications. A signal with 170 milliwatts power passes through 4 devices, each with an average noise of 1.4 microwatts. What is the SNR in dB? Q2.b) Given, the power of a signal is 1941 mW which is passing through a channel with frequencies ranging from 1GHZ to 889MHZ and the power of the noise is 3942 pW. How many signal levels are there?
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