Problem 1: In a broadcasting communication system, the transmitter power Pr is 80 KW, the channel attenuation is 80 dB (the attenuation in dB between Pr and the received signal power PRis computed as 10log10(Pr/PR)), and the noise power spectral density is 10-11 W/Hz. The message signal has a bandwidth W 100KHZ. 1) Find the predetection signal-to-noise ratio (), for the cases when the modulations are DSB-SC, DSB-LC and SSB, respectively. 2) Find the output signal-to-noise ratio ) if the modulation is DSB. 3) Find the output signal-to-noise ratio (A if the modulation is SSB. 4) Find the output signal-to-noise ratio e) if the modulation is DSB-LC (assume coherent detector is used in demodulation) with a modulation index 0.8

Problem 1: In a broadcasting communication system, the transmitter power Pr is 80 KW, the channel attenuation is 80 dB (the attenuation in dB between Pr and the received signal power PRis computed as 10log10(Pr/PR)), and the noise power spectral density is 10-11 W/Hz. The message signal has a bandwidth W 100KHZ. 1) Find the predetection signal-to-noise ratio (), for the cases when the modulations are DSB-SC, DSB-LC and SSB, respectively. 2) Find the output signal-to-noise ratio ) if the modulation is DSB. 3) Find the output signal-to-noise ratio (A if the modulation is SSB. 4) Find the output signal-to-noise ratio e) if the modulation is DSB-LC (assume coherent detector is used in demodulation) with a modulation index 0.8

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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