Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Signals in Noise:
Let us now consider a weak information signal that is to be amplified by a noisy amplifier. The signal-to-noise ratio (SNR), usually expressed in decibels, becomes an important system performance measure. It is given by
where the amplified signal power is Pout = GPin in the numerator, which includes source and amplifier noise given by Equation; Pin is the average power of the input signal; and the denominator Nout is the total output noise power given by Equation. Notice that the amplifier's power gainG does not appear in the final result of the SNR. Alarge SNR indicates that the signal is strong enough to mask the noise and possibly make the noise inconsequential. For example, with SNR ≥ 20 dB, intelligible voice communication results; otherwise, "static" in the voice signal; with SNR ≥ 50 dB, noisefree television image results; otherwise, "snowy" TV picture. For a good system performance, Equation suggests a large value of Pin and/or small values for T + Ta and B. However, one should be reminded here that the amplifier's bandwidth B should not be less than the signal bandwidth W. That simply means that with large-bandwidth signals, one would expect noise to be more troublesome.
Bus Organisation Set of communication lines in microprocessor which carry bits from microprocessor to peripherals ( memory inputs ports output ports and other chips
What is the use of terminal count register? Each of the four DMA channels of 8257 has single terminal count register. This 16-bit register is used for ascertaining that the dat
Q. The energy stored in a 2-µH inductor is given by w L (t) = 9e -2t µJ for t ≥ 0. Find the inductor current and voltage at t = 1 s.
Permeability and B-H curve for different magnetic materials Permeability is the ability of a magnetic circuit to create magnetic flux lines in a material or substance that prod
Q. Can you explain Binary Number Systems? The Binary numbers are used to represent digital information because like most digital systems, binary numbers have only two possible
Q. A balanced wye-connected load with a per-phase impedance of 4 + j3 is supplied by a 173-V, 60-Hz three-phase source. (a) Find the line current, the power factor, the total
Explain the Synchronous Compensators These are synchronous motors running without mechanical loads (or with load if required). Similar to the synchronous generators, they can a
Q. Find the rate of information transmission? If the time occupied in transmitting each binary digit is 1 µs, find the rate of information transmission if 1 baud is equal to 1
Illustration of embedded web technology An oven comprise an embedded processor. Owner can use a web ready mobile phone anywhere to control the oven remotely. By accessing a
Q. Write a control word for counter 1 of 8253 / 8254 that selects following options: load least significant byte only, mode 5 of operation and binary counting. Then write an inst
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd