Drill Problem 4.3 with extension 2. A signal is transmitted by an FM transmitter with a...
Prob. 3 An FM modulator output signal is given by Prm 5 cos(2nft + 2nk, m(t)dr). where k, = 30 H2/V. Assume that the message signal is the rectangular pulse m(1) = 8rect «- 2) (a) Sketch the phase deviation in radians. (b) Sketch the frequency deviation in Hz. (c) Determine the peak frequency deviation in Hz. (d) Is this NBFM or WBFM?
6. The following expression is for an FM signal for transmitting the message signal m(t) rt) across a channel with additive white Gaussian noise that has a power spectral density of n/2 5 x 1 0-6 W/Hz r(t) 7cos [10 t (a) (5 points) Calculate the output SNR (in dB) of the FM system. 6sin (4000Tt) (b) (5 points) The message signal can instead be transmitted using the Frequency- Shift Keying (FSK) digital system that consist of equally-likely pulses si(t)...
The message signal m (t) = Am cos (2nf, t) is used to generate the VSB signal ( 1-α)AμΑ, aAm A cos [2T(fe+fm)t]+ 2 cos [2T(f-m)t], where 0<a< 1. s(t) 2 Find the expression of s(t), where s(t) is the baseband representation of s(t) The message signal m (t) = Am cos (2nf, t) is used to generate the VSB signal ( 1-α)AμΑ, aAm A cos [2T(fe+fm)t]+ 2 cos [2T(f-m)t], where 0
Question 4: (20 points) An FM signal is modulated with message m(t)Am cos(2Tmt). The measured amplitude spectrum, SPM(f), is shown below: Amplitude spectrum of the frequency modulated signal 2 -2 5000 4000 3000 2000 -1000 1000 2000 3000 4000 5000 frequency f [Hz] a) What is the carrier frequency fe? b) What is the message frequency fm c) What is the FM modulation index Bf? Is it a narrowband or a wideband signal? d) Using Carson's rule, estimate the transmission...
Consider the FM signal: s(t) = 8cos[2πx105t+3∫-∞t m(t)dt] (a) Determine the instantaneous frequency and instantaneous phase of s(t). (b) Determine the frequency deviation and phase deviation of s(t) (c) Suppose the maximum value of |m(t)| is 4000 π, determine the maximum frequency deviation of s(t) (d) If m(t) has a bandwidth of 5 kHz, determine the bandwidth of s(t)
communication system 3.(20 p) An angle modulated signal has the form u(t) =100cos[21fct +6sin5000nt] where fc = 10 MHz. a). Determine the average transmitted power. b).Determine the peak-phase deviation. c).Determine the peak-frequency deviation. d). Is this an FM or a PM signal. Explain your answer.
clearly pls, thx 3.(20 p) An angle modulated signal has the form u(t) =100cos[2ntfct +6sin5000nt] where fc =10 MHz. a). Determine the average transmitted power. b).Determine the peak-phase deviation. c).Determine the peak-frequency deviation. d). Is this an FM or a PM signal. Explain your answer.
7. An angle modulated signal is given by (t)4 coslw.t + (a) Determine the peak frequency deviation of ?(t) 3 sin(2t)]. (b) If the signal o(t) above is a PM signal with kp 2, determine the message (c) If the signal o(t) above is an FM I signal with k 2, determine the message . (d) What is the power in 6(t)?
Q2 The output signal of an angle modulator is given as V(t) = 6 cos(2000000net + 40 cos(2000xt) + 15cos (400nt)) (v) Determine the following: The average power of the signal. b) The carrier frequency of the signal. The instantaneous frequency of the signal. d) The instantaneous maximum frequency deviation of the signal. e) The wavefom of the message signal, assuming a frequency modulation (FM). f) The modulation index, assuming a FM. Is it a broadband FM or narrowband FM...
Prob. 5 (a) Consider the FM signal with modulation index B 2 is passed through an ideal band-pass filter (BPF) with mid-band frequency f and bandwidth 5f. where f is the carrier frequency and fmis the frequency of the baseband modulating signal (i) Sketch the spectrum of the BPF output. (ii) Determine the fraction of the power of the FM signal that is present at the output of the filter (b) Consider the FM signal given by фFM (t)-100 cos...