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14. A satellite allocates a frequency band from 2000 MHz to 2040 MHz for transmission of digitized audio signals. Multiple audio signals, each made up of 2 stereo channels with a highest frequency of (N+5) kHz, must be sampled at 1.6x the minimum alias-free rate and digitized with 10-bit accuracy. The resulting PCM signals must then be combined by TDM and transmitted from the satellite using M-QAM modulation of a single carrier. (N=13) (a) What bit rate is required for a single audio signal? (b) If minimum-bandwidth pulses are used to carry the data, what is the maximum symbol rate allowed by the allocated bandwidth? (c) If 64-QAM format is used, what is the maximum possible bit rate? (d) If 64-QAM format is used, what is the largest number of audio signals that can be supported? (e) If noise is found to create excessive bit errors, choose a format other than 64-QAM that should do better, and find the largest number of audio signals that can be sent with your chosen format.

14. A satellite allocates a frequency band from 2000 MHz to 2040 MHz for transmission of digitized audio signals. Multiple audio signals, each made up of 2 stereo channels with a highest frequency of (N+5) kHz, must be sampled at 1.6x the minimum alias-free rate and digitized with 10-bit accuracy. The resulting PCM signals must then be combined by TDM and transmitted from the satellite using M-QAM modulation of a single carrier. (N=13) (a) What bit rate is required for a single audio signal? (b) If minimum-bandwidth pulses are used to carry the data, what is the maximum symbol rate allowed by the allocated bandwidth? (c) If 64-QAM format is used, what is the maximum possible bit rate? (d) If 64-QAM format is used, what is the largest number of audio signals that can be supported? (e) If noise is found to create excessive bit errors, choose a format other than 64-QAM that should do better, and find the largest number of audio signals that can be sent with your chosen format.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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14. A satellite allocates a frequency band from 2000 MHz to 2040 MHz for transmission of digitized audio signals. Multiple audio signals, each made up of 2 stereo channels with a highest frequency of (N+5) kHz, must be sampled at 1.6x the minimum alias-free rate and digitized with 10-bit accuracy. The resulting PCM signals must then be combined by TDM and transmitted from the satellite using M-QAM modulation of a single carrier. (N=13) (a) What bit rate is required for a single audio signal? (b) If minimum-bandwidth pulses are used to carry the data, what is the maximum symbol rate allowed by the allocated bandwidth? (c) If 64-QAM format is used, what is the maximum possible bit rate? (d) If 64-QAM format is used, what is the largest number of audio signals that can be supported? (e) If noise is found to create excessive bit errors, choose a format other than 64-QAM that should do better, and find the largest number of audio signals that can be sent with your chosen format.
Transcribed Image Text:14. A satellite allocates a frequency band from 2000 MHz to 2040 MHz for transmission of digitized audio signals. Multiple audio signals, each made up of 2 stereo channels with a highest frequency of (N+5) kHz, must be sampled at 1.6x the minimum alias-free rate and digitized with 10-bit accuracy. The resulting PCM signals must then be combined by TDM and transmitted from the satellite using M-QAM modulation of a single carrier. (N=13) (a) What bit rate is required for a single audio signal? (b) If minimum-bandwidth pulses are used to carry the data, what is the maximum symbol rate allowed by the allocated bandwidth? (c) If 64-QAM format is used, what is the maximum possible bit rate? (d) If 64-QAM format is used, what is the largest number of audio signals that can be supported? (e) If noise is found to create excessive bit errors, choose a format other than 64-QAM that should do better, and find the largest number of audio signals that can be sent with your chosen format.
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