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Q. Explain Source encoding or data compression?
The sequence of binary digits from the source encoder, known as the information sequence, is passed on to the channel encoder. The purpose of the channel encoder is to introduce some redundancy in a controlled manner in the binary information sequence, so that the redundancy can be used at the receiver to overcome the effects of noise and interference encountered in the transmission of the signal through the channel. Thus, redundancy in the information sequence helps the receiver in decoding the desired information sequence, thereby increasing the reliability of the received data and improving the fidelity of the received signal.
The binary sequence at the output of the channel encoder is passed on to the digitalmodulator, which functions as the interface to the communication channel. The primary purpose of the digital modulator is to map the binary information sequence into signal waveforms, since nearly all the communication channels used in practice are capable of transmitting electric signals (waveforms). Because themessage has only two amplitudes in a binary system, themodulation process is known as keying. In amplitude-shift keying (ASK), a carrier's amplitude is shifted or keyed between two levels. Phase-shift keying (PSK) involves keying between two phase angles of the carrier,whereas frequency-shift keying (FSK) consists of shifting a carrier's frequency between two values.Many other forms of modulation are also possible.
Fixed bias (base bias): Diagram: Fixed bias (Base bias) This type of biasing is also known as base bias . In the instance above figure, the single power source (
What are the basic modes of operation of 8255? There are two basic modes of operation of 8255, viz. 1. I/O mode. 3. BSR mode. In I/O mode, the 8255 ports work as progr
Use PSpice to solve for the amplitude and phase of the current and the voltage across the inductor in the circuit shown in Figure(a).
Q. For the 4-bit D/A converter of Figure, calculate: (a) The maximum analog output voltage. (b) The minimum analog output voltage. (c) The smallest detectable analog outpu
Mesh analysis procedure : 1. Assign a distinct current to every closed loop of the network. 2. Apply KVL around every closed loop of the network. 3. Solve the resulting
FIFO (First in First Out) stack is used in 8086.In this type of Stack the first stored information is retrieved first.
Q. Explain working of Digital-to-Analog Converters? Digital-to-Analog (D/A) Converters For the results of digital computations to be used in the analog world, it becomes n
Question 1 Define the term telecommunication? Discuss briefly the various uses of telecommunication in daily life Question 2 Explain the powers and functions of the TRAI
Magnetic flux and flux density Magnetic flux is the amount of the magnetic field (or the number of lines of force) formed by a magnetic source. The symbol represented magnetic
program for matlab
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