In a DSB-SC amplitude modulation system, the message signal is m(t)=e^(-3t)*u(t-2) and the carrier signal is ???( 2000??). Find the Fourier transform of the modulated signal.
In a DSB-SC amplitude modulation system, the message signal is m(t)=e^(-3t)*u(t-2) and the carrier signal is...
In a DSB-SC system, the carrier is c(t) = 2A sin (2πfct) and the message signal is given by m(t) = 2sinc(8t) + 4sinc^2 (8t). What is the frequency-domain representation and the bandwidth of the modulated signal?
In a coherent detection process, a sinusoidally modulated DSB-SC wave, s(t) = c(t)m(t) where the carrier wave is c(t) =Accos(2πfct) and the message signal is m(t) = Amcos(2πfmt), is applied to a product modulator using a locally generated sinusoid of Ac’ amplitude and is out of phase by φ with respect to the sinusoidal carrier used in the modulation. (a) Draw the block diagram of the coherent detection process and label the block diagram with the information provided above accordingly....
1. DSC-SC Modulation. Consider a message signal m(t) = 3 sinc(10t) this is applied to a product modulator with a carrier wave c(t) = 2 cos(100nt). (a) (5 points) Find and plot the Fourier transform S(f) of the DSB-SC modulated signal s(t). (b) (5 points) What is the bandwidth of s(t)? (c) (5 points) The signal s(t) is next applied to filter h(t), the output of the filter is named y(t). Now assume that I $2/300, If|< 30, H(f) =...
The message signal m(t) = 2 cos 400t + 3 sin(800t + 22) modulates the carrier signal e(t) A cos(700π) using DSB-SC (dual side band, suppressed carrier) modulations Find the time domain and frequency domain representation of the modulated signal and plot the spectrum (Fourier transform) of the modulated signal. What is power content of the modulated signal?
3. The following is the amplitude spectrum of a DSB+carrier AM signal x(f) 1.5 1.5 1.5 1.5 f (Hz) 1920 2000 2080 2080 2000 1920 (a) (10 points) Determine the carrier frequency fe the carrier amplitude Ac the mod ulation index ,, and the message signal m(t) of the AM signal. (b) (10 points) Given that μ2Sm 0.18, find the output SNR (in dB) if the received signal includes white noise with a power spectral density of η/2-10-10 W/Hz. (c)...
1. FM modulation. Consider a message signal m(t)-(2nt and a carrier wave c(t)-cos(400rt) (a) (20 points) Derive the FM modulated signal s(t) for ky-2 (b) (25 points) Find the Fourier transform, S(), of s(t) (Sketch to scale). (c) (5 points) What is the bandwidth of the modulated signal s(t).
An information signal is of the form s(t) = sin(2*pi*t)/t. The signal amplitude modulates a carrier of frequency 10Hz. Find and sketch the Waveform and Fourier transform of the transmitted signal before and after AM modulation. For AM modulation you can consider the simple case of DSB format (or double-sideband suppressed carrier modulation).
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...
Use the Amplitude Modulation property of the Fourier Transform to modulate x(t) to the carrier signal m(t). x(t) = t*exp(-100t)u(t), m(t) = cos(2*π*500t). Then show demodulation of the result.
Problem No. 1: Let us consider that a baseband message signal m(t)=4cos(2000xt) has to be transmitted from a location 'A' to its destination 'B' using a carrier signal given by c(t)=2cos(10000#t). The signal s() m(t)c(i) is the modulated signal which will be transmitted. Consider that the signal is transmitted through a noiseless channel and received at the receiver at location 'B' as the signal s(t). Based on this information, perform the following tasks. 1. Find, sketch and label the spectrum...