[Q4] A baseband signal (band-limited to 5kHz) is sampled at 20% over the Nyquist rateand coded using a PCM system having a 128 levels quantizer. The binary data is sentthrough a 2.5km transmission channel after been modulated as MPSK. The bandwidthof this channel is set to be 78% of the operating binary rate. Assume the power spectraldensity of the noise is 2nW/Hz per km, calculate the required minimum r.m.s. power ofthe received signal (in dB) to ensure the operating BER is not worse than 78 error bitsper second. (Use ToB≥ 1.9).(1+5The above question is similar tothis question, but with thenumbers changing, solve thequestion in the same way and steps(12) A baseband signal (band-limited to 4.5kHz) is sampled at 22% over Nyquist rateand coded using PCM system having 256 levels quantizer. The resulting NRZunipolar binary data is planned to be sent through a 2km transmission channelafter been modulated with M-ary PSK. The bandwidth of this channel was setto be 78% of the operating binary rate. If the channel is contaminated by aGaussian zero-mean white noise of PSD = 2.5nW/Hz per km, calculate therequired minimum r.m.s. power of the received signal (in dBm) to ensure theoperating BER is not worse than 120 error bits per second. (Use TB≥ 1.7).Solution: R = lfs = 8 x 2.44 x 4.5 x 10³ = 87.84 kbps,=mBch = 0.78R = 68.5152kHz. To Bch = 1.7 Rg = 40.3031k symbols persecond, m =RbR=2.17953 bits per symbol. → Rs = 29.28 k symbolsper second. P, =BER = 1.3661 x 10-3. n = 2 x 2.5 = 5nW/Hz.→Q¹(2.0492 x 10-3) = 44.7285√S>25mP = 2Q (√√x sin)nRsXS = (287)² = 4.1171mW: S≥6.1459dBm44.7285The Q function can be approximated as:Q(x) e(az²+bx+c)For 0 ≤ x ≤ 8, the variables are: a = -0.4698, b=-0.5026, c= -0.8444.

Determine the Nyquist rate: The Nyquist rate is twice the bandwidth of the signal. In this case, the…

[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 TB21.9). a ob (1+²1²

[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 TB21.9). a ob (1+²1²

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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