2. In a QAM system (shown in figure below), the locally generated carrier has a frequency...
5 (15pt) In Quadrature-Carrier Multiplexing, two baseband signals mi(t) and m2(t) can be modulated on one single carrier frequency by taking advantage of the in-phase component and the auadratiure component of the carrier signa! At receiver side, let's assume the received signal r(t) is r(t) Acmi (t) cos(2n fet) + Acm2 (t) sin(2r/et) Employing a coherent detector, the mi) and m2(t) can be extracted from the received signal. Assuming the signal generated from the local oscillator at the receiver is...
When the message signal m (t) =cos (2π fmt) and the carrier signal is c(t)=cos (2π fct) , fm<< fc, The modulated DSB-SC signal SDSB-SC=m(t)cos(2πfct) is generated, and only the upper sideband To generate and transmit the SSB signal. As shown in the figure below, the receiver is a local oscillator cosine signal to the received signal and passes it through a low-pass filter. Answer the following questions. (a) Draw the waveform of DSB-SC modulated signal SDSB-SC(t) (b)Find the result...
5 pts D Question 1 A system has the following impulse response: .2 Sample number, n From the choices below, select the frequency response of this system. H (eju)-e(1.5 ) (2 sin( 1.5ώ) + 4 sin(0.δώ)) H (ee) = e-j(1.5e-5) (cos( 1.5 ) +2 cos(0.54)) @ H (ee)-e-n1.si) (sin( 1.54) t. 2 sin(0.δώ)) (sin(l.50) +4sin(0.0) H (ee)-e-j(1.5i) (2 cos( 1.5ώ) + 4 cos(0.5a)) H (efo)-e-n1.5u) (cos( 1.50) + 2 cos(0.50)) https://rmitinstructure.comcoursesy 5 pts DQuestion 2 A system has the following...
(2) Find the output of the DSB-SC demodulator shown in Fig.Q2 below, if the local oscillator at the receiver has a phase difference of $ . Also find the power of the signal v,(t) Product modulator (mixer) DSB-SC Modulated Signal vít) Low-Pass Filter Demodulated Signal v.(t) s(t)= m(t)4, cos(21f1) cos (21 f1+0) Local Oscillator Fig. 22
find value of flo???? ) frequency modulatea100KHz carrier to produce the fl loo p narrowband FM signal: 120 pts PrBndt) _ 5 cos (2a2. 10st + 0.0025 sin 2π 104t ) agram design) the wideband FM signal wrt) with carmer frequency of 100 MHz and a (peak) frequency deviation of So R Frequency Multipliers of any value following are available for the design Assume that the frequency can be tuned to any value between 200 나 A local oscillator whose...
Please answer in detail A) Assume that x(t) -2 sin (4 pi t)-2 input is applied to a high pass filter with the cut off frequency of 2 Hz. Explain in detail with appropriate justification and accurately sketch the output voltages that appears on the oscilloscope screen if 1 volt/div and 0.25 sec. time/div are set. + B) Assume that x(t) 4 cos (2 pi t)+4 input is applied to a low pass filter with the cut off frequency of...
5.17 The frequency response of an ideal low-pass filter is -1/2 S2 > 0 |H(S2) = - -2 <92 < 2 otherwise ZH (12) = 0 1/2 12 < 0 (a) Calculate the impulse response h(t) of the ideal low-pass filter. (b) If the input of the filter is a periodic signal x(t) having a Fourier series 2 X(t) = cos(3kt/2) k=1 determine the steady-state response yss(t) of the system. Answers: h(t) = (1 - cos(2t))/(nt); Yss(t) = 2 sin(1.5t).
below is used to modulate a carrier to generate the AM signal yt) (Am()) cos(1000t) The periodic signal m() shown a) The power efficiency of the system is measured to be 1 () The type of AM modulation, i.e. SSB, DSBSC, (i) The constant A. (ili) The modulation index 1/13. Determine DSB with carrier enit -3 b) An angle modulated signal is given by d(t-2 cos (2n1061+ sin 2 1000). Find i) The carrier frequency. ii) The baseband signal bandwidth....
1. Given a baseband signal m(t) sin(1000mt) cos(3000nt) + cos(3700nt a. Sketch the spectrum of m(t) (Hint. sin(a) cos(b) 0.5 sin(a +b) +0.5sin a-b)) b. Sketch the spectrum of DSB-CS signal m(t)cos(10000mt) C ldentify the upper sideband {USB) and lower sideband (LSB) spectra d. Give the black diagram of the receiver to receive DSB-CS signal in (b). 2. baseband signal m(r)--0.5 + Σ..小(t-n)-u(t-0.5-n)] where ult) is the Given unit step function, an amplitude modulated signal is as SAM 107+ m(0cos...
e. We have a signal which function is Inoimbo V13 (t) = sin(0.1 2 * t) + sin(10 * 2 t) We will design a low-pass filter with cutoff of frequency = 0.5Hz to extract the 0.1Hz signal sin(0.1 * 2 * t) and filter 10HZ noise sin(10 * 2 * t) ). e.1(N) (3 pts) Please find a suitable value of Resistor R(N), where C=1.5915 * 10-6 (F) to implement a cutoff frequency 0.5Hz low-pass filter. e.2(N) (4 pts)...