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Q. Illustrate Frequency-shift keying?
Digital transmission by FSK is a nonlinear modulation method that is appropriate for channels that lack the phase stability needed to perform carrier-phase estimation. Figure shows the functions of a coherent FSK system in which the transmitted signal sFSK(t) is generated by frequency modulation of a voltage-controlled oscillator (VCO). The digital signal d(t) has a polar format with amplitudes ±1, corresponding to binary digits 1 and 0, respectively.Modulation keys the VCO's angular frequency between two values, such that
where ω is the frequency deviation from a nominal or carrier angular frequency ωc. In order to conserve the bandwidth in the signal sFSK(t), ω is usually selected not much larger than the minimum allowable value given by
When Equation is satisfied, the bandwidth of the channel needed to support sFSK(t)is about 2ωb rad/s. The transmitted signal in Figure can be seen to be two unipolar ASK signals in parallel, one at carrier frequency ω2 and the other at ω1. The receiver then becomes two coherent ASK receivers in parallel.
The noncoherent FSK version results when each product device and the following integrator in the receiver are replaced by a corresponding matched filter followed by an envelope detector.
Find the resistance of 1 km of copper cable having a diameter of 10 mm if the resistivity of copper is 0.017 x 10 -6 Ωm.
what is that mean and explain
Properties of a p-n junction The p-n junction possesses several interesting properties that have helpful applications in modern electronics. A p-doped semiconductor is compara
Considering the TTL NAND gate circuit of Figure, with one or more inputs low, show that the output will be high.
This problem is with circuits. It is basic circuit problem. I need a very detailed step by step on how we arrived at the solutions. Only respond if you are 100% sure on your answer
Using the optimized 6-311G(d,p) geometry determined in question 1, perform the following equivalent core calculations for any two inequivalent carbons of butadiene: (a) Equivale
Q. Explain the fixed bias circuit? The Fig refers to the common emitter collector characteristics and the ac and dc load lines.The Fig shows the points Q 1 and Q 2
Q. Show the r’s Complement? Step1- get the (r-1)'s complement Step 2- add 1 to the result ex. 935 10 9 9 9
8086 is having 2 dissimilar units i.e. BIU(Bus Interface Unit) and EU(Execution Unit), these two units work synchronously.
Question: (a) For a CD quality sound, what is the bit depth used and give the amplitude's levels and the dynamic range of this sound quality (b) In audio technology, the dec
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