An alternate approach to single sideband modulation (SSB) for “saving” bandwidth is called quadrature phase multiplexing. The idea is behind this is that cos(wet) and sin(wet) are mutually orthogonal due to their π/2 phase difference. So we can send two message signals x₁(t) and x2(t), in the same frequency bands, by modulated by cos(wet) and sin(wet) respectively. Figure 4(a) provides the block schematic for implementing quadrature phase multi- plexing. x₁(t) x2 (t) cos(wet) X₁ (jw) y(t) 3-K. -WM X sin(wet) X (a) WM W (b) -WM Figure 4: Quadrature phase multiplexing 1 X₂ (jw) WM (Part a) Express Y(jw) in terms of X₁(jw), X₂(jw) and other relevant quantities. (Part b) Given X₁(jw) and X₂(jw) as in Figure 4(b), plot the real and imaginary components of the spectrum of y(t), i.e., sketch Re{Y(jw)} and Im{Y(jw)}. (Part c) Design and justify demodulation scheme(s) for obtaining x₁(t) and x₂(t) from y(t).

An alternate approach to single sideband modulation (SSB) for “saving” bandwidth is called quadrature phase multiplexing. The idea is behind this is that cos(wet) and sin(wet) are mutually orthogonal due to their π/2 phase difference. So we can send two message signals x₁(t) and x2(t), in the same frequency bands, by modulated by cos(wet) and sin(wet) respectively. Figure 4(a) provides the block schematic for implementing quadrature phase multi- plexing. x₁(t) x2 (t) cos(wet) X₁ (jw) y(t) 3-K. -WM X sin(wet) X (a) WM W (b) -WM Figure 4: Quadrature phase multiplexing 1 X₂ (jw) WM (Part a) Express Y(jw) in terms of X₁(jw), X₂(jw) and other relevant quantities. (Part b) Given X₁(jw) and X₂(jw) as in Figure 4(b), plot the real and imaginary components of the spectrum of y(t), i.e., sketch Re{Y(jw)} and Im{Y(jw)}. (Part c) Design and justify demodulation scheme(s) for obtaining x₁(t) and x₂(t) from y(t).

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...

See similar textbooks

Similar questions

Question #2 Find %3D in the figure Shown:- Zła 2188r 2188 T(^
#59 Drawa 4-variable K-map and simplified the Boolean expression based on K-map. Inputs Output Inputs Output ABCD 000 Y ABC D Y 0 1000 O 00 01 1001 0 0 010 00 い 0 0 0 0101 01 10 0 1 | 1 000- 0 0 le 1010 101 1100 0 1101 0 0 || 1 །དད།
An electronic system will only operate if three switches A, B and C are correctly set. An output signal (X = 1) will occur if A and B are both in the ON position or if A is in the OFF position and B and C are both in the ON position. Design a logic circuit to represent the above situation and draw the truth table and Karnaugh diagram
Find the current iy ANSWER:______________mA
Reaming tool is a single point cutting tool. Select one: True False
4. For a Silicon sample, N=2 x 1012cm-3 and Na= 0 at T=300K. Determine what type of sample it is, n type or p type or intrinsic? Now the temperature is raised to T=80OK, determine what type of sample it is. Will temperature change have any effect on its type? Show mathematical calculation for your statement.
1. What are the five basic ideal, electronic component models used to model all other electronic devices? 2. What is the formula for each of the five, ideal models that expresses the relationship between voltage across and current through the device? 3. What is the phase shift between the voltage and the current introduced by each of the five, ideal component models?
What is ohms law? give its applications.
A cube of ice is 2 ft by 2 ft by 2 ft. The ice melts until it becomes a cube which is % as heavy as the original. Find the dimensions of the new cube.