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2. A transmitter amplitude modulates a carrier with a message signal m(t) = cos(4000nt), with a transmitted power of 10 KW. The signal goes through a communication channel with a 100 dB attenuation. The receiver has a front- end noise with no = 10-¹² W/Hz and includes a bandpass filter. What is the SNR after demodulation in each of the following cases: (a) Upper single-sideband (USSB) demodulation; (b) Conventional AM with a modulation sensitivity ka = 0.5; (c) DSB-SC demodulation;

2. A transmitter amplitude modulates a carrier with a message signal m(t) = cos(4000nt), with a transmitted power of 10 KW. The signal goes through a communication channel with a 100 dB attenuation. The receiver has a front- end noise with no = 10-¹² W/Hz and includes a bandpass filter. What is the SNR after demodulation in each of the following cases: (a) Upper single-sideband (USSB) demodulation; (b) Conventional AM with a modulation sensitivity ka = 0.5; (c) DSB-SC demodulation;

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
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2. A transmitter amplitude modulates a carrier with a message signal m(t) = cos(4000nt), with a transmitted power of 10 KW. The signal goes through a communication channel with a 100 dB attenuation. The receiver has a front- end noise with no = 10-¹² W/Hz and includes a bandpass filter. What is the SNR after demodulation in each of the following cases: (a) Upper single-sideband (USSB) demodulation; (b) Conventional AM with a modulation sensitivity ka = 0.5; (c) DSB-SC demodulation;
Transcribed Image Text:2. A transmitter amplitude modulates a carrier with a message signal m(t) = cos(4000nt), with a transmitted power of 10 KW. The signal goes through a communication channel with a 100 dB attenuation. The receiver has a front- end noise with no = 10-¹² W/Hz and includes a bandpass filter. What is the SNR after demodulation in each of the following cases: (a) Upper single-sideband (USSB) demodulation; (b) Conventional AM with a modulation sensitivity ka = 0.5; (c) DSB-SC demodulation;
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