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Define Sampling at a Very High Frequency?
By sampling at a very high frequency compared with the signal frequency, we can ensure that we do not miss important information. Another advantage of sampling at a high frequency is that from the samples, we can rebuild the signal almost as well as the original. As displayed on the diagram above, if we plot the inferred signal from the samples, we will obtain a waveform very similar to the original. When an analog signal is sampled, several images of the spectrum occur in the frequency domain.
These images are centred around the base band (original signal) and multiples of the sampling rate. This is comparable to having multiple analog-mixer circuits.
Simulate and compare BER of QPSK system and 4-QAM system without grey coding Eb/No=0.2.4.6.8.10
Design a low noise amplifier using an Infineon RF transistor BFP640. The amplifier is to be used to amplify the L2 GPS signal and so the centre frequency is 1227MHz and bandwidth 4
Q. Briefly explain about Laplace transform? Many commonly encountered excitations can be represented by exponential functions. The differential equations describing the network
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Q. Show limitations of microprocessor-based control systems? Practical limitations of microprocessor-based control systems stem from the following considerations: • Finite-w
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The block diagram of Figure is a functional representation of a type of digital control system, in which G and H serve the same function as in any feedback system. Note that the er
polarity of dot convention
At the transmitter in a standard AM system, P f = 50 W. In the receiver (S 0 /N 0 ) AM = 250 when (S i /N i ) AM = 3000. Find the transmitter's unmodulated carrier power and t
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