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[Q4] A baseband signal (band-limited to 5kHz) is sampled at 20% over the Nyquist rate and coded using a PCM system having a 128 levels quantizer. The binary data is sent through a 2.5km transmission channel after been modulated as MPSK. The bandwidth of this channel is set to be 78% of the operating binary rate. Assume the power spectral density of the noise is 2nW/Hz per km, calculate the required minimum r.m.s. power of the received signal (in dB) to ensure the operating BER is not worse than 78 error bits per second. (Use ToB ≥ 1.9). 6- 2222 11

[Q4] A baseband signal (band-limited to 5kHz) is sampled at 20% over the Nyquist rate and coded using a PCM system having a 128 levels quantizer. The binary data is sent through a 2.5km transmission channel after been modulated as MPSK. The bandwidth of this channel is set to be 78% of the operating binary rate. Assume the power spectral density of the noise is 2nW/Hz per km, calculate the required minimum r.m.s. power of the received signal (in dB) to ensure the operating BER is not worse than 78 error bits per second. (Use ToB ≥ 1.9). 6- 2222 11

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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[Q4] A baseband signal (band-limited to 5kHz) is sampled at 20% over the Nyquist rate and coded using a PCM system having a 128 levels quantizer. The binary data is sent through a 2.5km transmission channel after been modulated as MPSK. The bandwidth of this channel is set to be 78% of the operating binary rate. Assume the power spectral density of the noise is 2nW/Hz per km, calculate the required minimum r.m.s. power of the received signal (in dB) to ensure the operating BER is not worse than 78 error bits per second. (Use ToB ≥ 1.9). 6- 2222 11
Transcribed Image Text:[Q4] A baseband signal (band-limited to 5kHz) is sampled at 20% over the Nyquist rate and coded using a PCM system having a 128 levels quantizer. The binary data is sent through a 2.5km transmission channel after been modulated as MPSK. The bandwidth of this channel is set to be 78% of the operating binary rate. Assume the power spectral density of the noise is 2nW/Hz per km, calculate the required minimum r.m.s. power of the received signal (in dB) to ensure the operating BER is not worse than 78 error bits per second. (Use ToB ≥ 1.9). 6- 2222 11
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