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1. Write a short technical report on one of the subsequent digital communication techniques-
a. Frequency Division Multiplexing
b.Delta Modulation
c. Error Detection and Correction
2. Discuss using diagrams how analogue signals are converted to digital signals, discuss the need for non-uniform quantisation and the process of conversion back to an analogue signal.
signals are to be sampled at rates no less than their respective nyquist rates and are to be word-by-word multiplexed . this can be achieved by multiplexing the PAM samples of the four signals and the binary coding the multiplexed samples (as in t..
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 152°C. (a) What is the average kinetic energy of each type of molecule. J/molecule (b) What is the rms speed of each type of molecule.
Look up the Bell 103 modem and answer the following questions: (a) What year was the modem introduced(b) What baud rate did the modem operate at (c) What is baud rate How is it different than bit rate
1- Derive the transfer function of a third orderlow Pass Butterworth filter for a bandwidth of200 rad/sec. 2-Draw a simulation diagram for the design of this filter. Use integrators, amplifiers and summers.
Calculate the minimum number of PN bits required for each frequency hop for an FHSS system that employs a total bandwidth of 800 MHz and an individual channel bandwidth of 200 Hz. If this system uses MFSK modulation in conjunction with FHSS
A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of 2.5 cm, with a spacing 3.6m between centers. a)Determine the total line inductance in mH/m.
The circuit also has a single bit output V. If the 4-bit input is not a valid 8421 BCD digit, V = 0; else V = 1. If V = 0, (the input is not valid) the gray code BCD outputs are don't cares.
determine the transfer function of a 4th order lowpass butterworth filter with a 3-dB cutoff frequency of 3.4 kHz and passband gain=1. Design the circuit using MFB topology. Design two sections with an order of 2.
an object hose mass is 200 kg moves at a velocity of 50m/sec and altitude of 200m,both measuredc relative to the surface of the earth. the acceleration of gravity can be taken as constant at g=9.8 m/sq.sec.
If the amplitude of the incident wave voltage at theload is 100V, determine the amplitude of the total voltage at theload, the distance from the load to the first voltage minimum and the amplitude of the voltage at this minimum.
Design a circuit with one output f and four inputs x1, x0, y1, andy0. Let X = x1x0 be a 2 digit binary number. X can have fourpossible valuations (X=x1x0), namely, 0 = 00, 1 =01, 2 =10, and 3 =11.
An open container holds ice of mass 0.505 kg at a temperature of -11.0 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 900 J/minute . The specific heat of ice to is 2100 J/kg and the hea..
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