I got help with task 1 and 2 . can you help me with task 3 and 4 of this question. please help me step for step thanks.
![A signal x[n] modulated by multiplying it by a carrier wave cos(2*p1/cm) to form the signal z[n] = cos(2p1Vcm)x[n] ·The mo](http://img.homeworklib.com/images/3f07c12a-aa85-4c9f-91af-8be6f25c0bde.png?x-oss-process=image/resize,w_560)
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I got help with task 1 and 2 . can you help me with task 3 and 4 of this question. please help me...
Please finish these questions. Thank you Given find the Fourier transform of the following: (a) e dt 2T(2 1) 4 cos (2t) (Using properties of Fourier Transform to find) a) Suppose a signal m(t) is giv...
Please finish these questions. Thank you
Given find the Fourier transform of the following: (a) e dt 2T(2 1) 4 cos (2t) (Using properties of Fourier Transform to find) a) Suppose a signal m(t) is given by m()-1+sin(2 fm) where fm-10 Hz. Sketch the signal m(t) in time domain b) Find the Fourier transform M(jo) of m(t) and sketch the magnitude of M(jo) c) If m(t) is amplitude modulated with a carrier signal by x(t)-m(t)cos(27r f,1) (where fe-1000 Hz), sketch...
A cascaded system that consists of an LTI system and a delay system is shown in...
A cascaded system that consists of an LTI system and a delay system is shown in Figure Q4(b). The input signal X(t) and impulse response of the LTI system, h(t) are given as the following: x(t) = 6-2&u(t) h(t) = e-fu(t) Determine: The Fourier transform of y(t). (3 marks) The Fourier transform of z(t). (3 marks) A basic modulator circuit is shown in Figure Q4(c). Modulation is a multiplication between input signal, m(t), and a carrier signal, c(t). The process...
(a) Consider a discrete-time signal v[n] satisfying vn0 except if n is a multiple of some fixed integer N. i.e oln] -0, otherwise where m is an integer. Denote its discrete-time Fourier transform by...
(a) Consider a discrete-time signal v[n] satisfying vn0 except if n is a multiple of some fixed integer N. i.e oln] -0, otherwise where m is an integer. Denote its discrete-time Fourier transform by V(eJ"). Define y[nl-v[Nn] Express Y(e) as a function of V(e). Hint : If confused, start with N-2 (b) Consider the discrete-time signal r[n] with discrete-time Fourier transform X(e). Now, let z[n] be formed by inserting two zeroes between any two samples of x[n]. Give a formula...
10ρ 18ρ A signal (t) has the Fourier transform X(jw) indicated in the figure. The signal is sampled to obtain the discrete time signal 1. Sketch the Fourier transform Xr(jw) of x[n] for T-to. 2. Can...
10ρ 18ρ A signal (t) has the Fourier transform X(jw) indicated in the figure. The signal is sampled to obtain the discrete time signal 1. Sketch the Fourier transform Xr(jw) of x[n] for T-to. 2. Can x(t) be recovered for T? How? What is the maximum value of T so that r(t) can be recovered?
10ρ 18ρ A signal (t) has the Fourier transform X(jw) indicated in the figure. The signal is sampled to obtain the discrete time signal 1....
1 2 4. The amplitude modulation signal is given by the following expression and is applied...
1
2
4. The amplitude modulation signal is given by the following expression and is applied to 75 load. Vam(t) = 10 sin (21fct) - 2.5 cos (1500krt) + 2.5 cos (1450krt) V Determine: a) Modulation index b) The frequency of the carrier and the information signal c) The bandwidth d) The total power e) The transmission power efficiency be ar e 5. One of the inputs to a frequency modulator is a 250 kHz carrier signal with amplitude of...
Note: (1) Open book; (2) Time: 3:30-4:45pm; Date: 3/31/2004; Room: S376 1. (30 pts) A baseband...
Note: (1) Open book; (2) Time: 3:30-4:45pm; Date: 3/31/2004; Room: S376 1. (30 pts) A baseband signal m(1) has Fourier transform M) shown in the figure. 1M) MØ MO) VUM - A carrier signal is voo) = A cosw/where fc»> fm. Give expressions of the following modulated signals (1), and draw their spectra S(): (a)(10 pts) DSB with carrier; > V (b) (10 pts) DSB-SC; (c)(10 pts) SSB-SC lower sideband. : * VIE) =Ac. (1 +m[6]) cosmet
Hello, Experts! Tomorrow i have a final examination, so please giving me a hand to solve this question. Here is my que...
Hello, Experts!
Tomorrow i have a final examination, so please giving me a
hand to solve this question.
Here is my question. Thank you so much!!
Question 1: (25 marks) The continuos time signal Xa(t) has the Fourier transform shsown in the Figure Q.1. Xa(t) then is sampled with the sampling frequencies f, to get the discrete time signal xa(n). Sketch Xa(o), the DTFT of xa(n), for different sampling frequencies 4kHz; 2kHz, and 1kHz. D.What is the minimum sampling rate...
Please give me detailed solutions step by step, I am just trying to learn, thank you...
Please give me detailed solutions step by step, I am just trying
to learn, thank you so much in advance! 2016
QUESTION 1 Q 1(a) Obtain the z-Transforms of each of the following signals ITOTAL MARKS: 25] [6 Marks In] = cos (-_-) uln] 2 marks] u nun - marks] 0-S Q 1(b) The signal x[n], (of length 4 samples) is defined as: x[n-(1,-1,12) [7 Marks] (i) Write down the Discrete-time Fourier Transform (DTFT) of xn [2 marks] (i) pn]...
Make sure you show all working and describe each step in your calculations. 1. A signum function ...
signals and communications 2
Make sure you show all working and describe each step in your calculations. 1. A signum function is defined as sgn(t) = { 1、12 0 1 t<0 Plot and express this function in terms of the unit-step function. 5 marks/ Determine and plot the even and odd parts of the signal 2. x(t) (te-3 +2)u(t). 5 marks 3. If prove that y[n-m] = x[n-m] * h[n]. 5 marks 4. Assuming α > 0, plot the signal...
Can someone please help me with all these questions please? I desperately need it asap! Must be d...
Can someone please help me with all these
questions please? I desperately need it asap! Must be done with
MATLAB. Thumbs up will be guaranteed! Thank you so
much!!
A. Discrete Fourier Transform and zero padding For the signals x1[n] and x2[n] answer the following questions: x2 [n] = cos(2m30/100) + 0.5 cos(2nn40/100) 1) Compute and plot the length-N DFT magnitude of signals x1[n] and x2[n] with respect to frequency fr, where f and N is the number of samples....
Please finish these questions. Thank you
Given find the Fourier transform of the following: (a) e dt 2T(2 1) 4 cos (2t) (Using properties of Fourier Transform to find) a) Suppose a signal m(t) is given by m()-1+sin(2 fm) where fm-10 Hz. Sketch the signal m(t) in time domain b) Find the Fourier transform M(jo) of m(t) and sketch the magnitude of M(jo) c) If m(t) is amplitude modulated with a carrier signal by x(t)-m(t)cos(27r f,1) (where fe-1000 Hz), sketch...
A cascaded system that consists of an LTI system and a delay system is shown in Figure Q4(b). The input signal X(t) and impulse response of the LTI system, h(t) are given as the following: x(t) = 6-2&u(t) h(t) = e-fu(t) Determine: The Fourier transform of y(t). (3 marks) The Fourier transform of z(t). (3 marks) A basic modulator circuit is shown in Figure Q4(c). Modulation is a multiplication between input signal, m(t), and a carrier signal, c(t). The process...
(a) Consider a discrete-time signal v[n] satisfying vn0 except if n is a multiple of some fixed integer N. i.e oln] -0, otherwise where m is an integer. Denote its discrete-time Fourier transform by V(eJ"). Define y[nl-v[Nn] Express Y(e) as a function of V(e). Hint : If confused, start with N-2 (b) Consider the discrete-time signal r[n] with discrete-time Fourier transform X(e). Now, let z[n] be formed by inserting two zeroes between any two samples of x[n]. Give a formula...
10ρ 18ρ A signal (t) has the Fourier transform X(jw) indicated in the figure. The signal is sampled to obtain the discrete time signal 1. Sketch the Fourier transform Xr(jw) of x[n] for T-to. 2. Can x(t) be recovered for T? How? What is the maximum value of T so that r(t) can be recovered?
10ρ 18ρ A signal (t) has the Fourier transform X(jw) indicated in the figure. The signal is sampled to obtain the discrete time signal 1....
1
2
4. The amplitude modulation signal is given by the following expression and is applied to 75 load. Vam(t) = 10 sin (21fct) - 2.5 cos (1500krt) + 2.5 cos (1450krt) V Determine: a) Modulation index b) The frequency of the carrier and the information signal c) The bandwidth d) The total power e) The transmission power efficiency be ar e 5. One of the inputs to a frequency modulator is a 250 kHz carrier signal with amplitude of...
Note: (1) Open book; (2) Time: 3:30-4:45pm; Date: 3/31/2004; Room: S376 1. (30 pts) A baseband signal m(1) has Fourier transform M) shown in the figure. 1M) MØ MO) VUM - A carrier signal is voo) = A cosw/where fc»> fm. Give expressions of the following modulated signals (1), and draw their spectra S(): (a)(10 pts) DSB with carrier; > V (b) (10 pts) DSB-SC; (c)(10 pts) SSB-SC lower sideband. : * VIE) =Ac. (1 +m[6]) cosmet
Hello, Experts!
Tomorrow i have a final examination, so please giving me a
hand to solve this question.
Here is my question. Thank you so much!!
Question 1: (25 marks) The continuos time signal Xa(t) has the Fourier transform shsown in the Figure Q.1. Xa(t) then is sampled with the sampling frequencies f, to get the discrete time signal xa(n). Sketch Xa(o), the DTFT of xa(n), for different sampling frequencies 4kHz; 2kHz, and 1kHz. D.What is the minimum sampling rate...
Please give me detailed solutions step by step, I am just trying
to learn, thank you so much in advance! 2016
QUESTION 1 Q 1(a) Obtain the z-Transforms of each of the following signals ITOTAL MARKS: 25] [6 Marks In] = cos (-_-) uln] 2 marks] u nun - marks] 0-S Q 1(b) The signal x[n], (of length 4 samples) is defined as: x[n-(1,-1,12) [7 Marks] (i) Write down the Discrete-time Fourier Transform (DTFT) of xn [2 marks] (i) pn]...
signals and communications 2
Make sure you show all working and describe each step in your calculations. 1. A signum function is defined as sgn(t) = { 1、12 0 1 t<0 Plot and express this function in terms of the unit-step function. 5 marks/ Determine and plot the even and odd parts of the signal 2. x(t) (te-3 +2)u(t). 5 marks 3. If prove that y[n-m] = x[n-m] * h[n]. 5 marks 4. Assuming α > 0, plot the signal...
Can someone please help me with all these
questions please? I desperately need it asap! Must be done with
MATLAB. Thumbs up will be guaranteed! Thank you so
much!!
A. Discrete Fourier Transform and zero padding For the signals x1[n] and x2[n] answer the following questions: x2 [n] = cos(2m30/100) + 0.5 cos(2nn40/100) 1) Compute and plot the length-N DFT magnitude of signals x1[n] and x2[n] with respect to frequency fr, where f and N is the number of samples....
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