please explain this Single Sideband (SSB)DSB-SC is spectrally inefficient. It uses twice the bandwidth of themessage.M(f)2AALSBUSBUSBLSBf-B0B-fe0fef2B(b)(a)The signal can be reconstructed from either the upper sideband (USB) orlower sideband.SSB transmits a bandpass filtered version of the modulated signal.

Step 1: DSB-SC modulation involves modulating a carrier signal by the message signal (information…

Answered: Single Sideband (SSB) DSB-SC is…

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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The baseband signal modulates a 98 kHz carrier sine wave. Using frequency and amplitude labelling similar to that in Figure 2, sketch the spectrum of the modulated signal using a template, similar to that in Figure 3, for the following modulations: AM with the amplitude of the carrier wave being 20 V DSBSC SSB – the lower sideband SSB – the upper sideband
3-16 An audio oscillator operating at 1 kHz is gated on for an interval of 5 ms by a single baseband pulse. Sketch the form of the amplitude spectrum in the vicinity of the major positive frequency lobe, and label significant frequencies.
Q2: A modulating signal is used to modulate a carrier signal(AM modulation). Let Pr, Pc, PsB, PUSB, PLSB and u are the total power, carrier power, side band power, upper side band power, lower side band power and modulation index respectively. Prove the following: a. Pc = Pr (m2) m2 b. PsB = Pr m2 PT c. PUSB = PLSB 2+m2 2+m2
Modify this circuit to extend the upper frequency limit to greater than 15 MHz. You may change the topology (i.e. configuration), but not the power supply voltage or collector bias current. The circuit voltage gain must be 46dB +/- 1 dB. Provide simulation results to show AC frequency responses of both circuits on the same plot, and annotate the 3dB upper frequency limit on both traces. Use typical ẞ values from the data sheet for the simulation. You may assume that 1% resistors are available in values below 100. The circuit must adhere to Standard Bias techniques. V4 Rser=0 SINE(0 0.02 10k) AC 1 VCC ୯ V2 +15V Cin1 1μ -VCC VCC R4 Rc1 147k 7k Q3 2N3904 R7 R6 9.09 20.5k Ce1 Re1 1.00k 10p Out
Design (only the block diagram) an Armstrong indirectly FM modulator to generate an FM carrier with a carrier frequency of 98.1MHz and df (frequency deviation) =75kHz.A narrowband FM generator is available at a carrier frequency of 100 KHz and a (frequency deviation) df=10Hz.The stockroom has an oscillator with an adjustable frequency in the range of 10 to 11MHz.There are plenty of Frequency multipliers.
8.a. Which of the following statements about OSNR and BER is correct?A. BER isn't related to OSNR.B. Lower BER leads to a lower OSNR.C. Higher BER leads to a higher OSNR.D. Higher BER leads to a lower OSNR.8.b. An optical signal has a strength of 2.1 mW. What's this value in dBm?A. 2.11 dBmB. 2.32 dBmC. 3.10 dBmD. 3.22 dBm
For an FM signal, the maximum frequency of the modulating signal is 100 kHz and the frequency deviation is 10 kHz. Find out the bandwidth of the FM modulated waveform.
Draw the Q output on the waveform
Using half width pulses, derive the power spectral density and bandwidth for 1. Unipolar signals 2. Polar signals. 3. Bipolar signals.
A baseband signal has the spectrum sketched in the first image added below. The baseband signal modulates a 98 kHz carrier sine wave. Using frequency and amplitude labelling similar to that in Figure 2, sketch the spectrum of the modulated signal using a template added in image 2, for the following modulations: i-AM with the amplitude of the carrier wave being 20 V ii-DSBSC iii-SSB – the lower sideband iv-SSB – the upper sideband
another

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