4. A waveform x(t)s 20cos (1000π + ) cos (2000π + ) is to be uniformly...
Digital Communication (ELEC 20004)-Spring-19-cW1 (ASSMNT)-All AK 1. a. A waveform m() -62 sin (3500t+)+36 sin(4500t5 is to be uniformly sampled for digital transmission. i. Determine the sampling frequency that satisfies the Nyquist criteria, and hence (7 Marks) determine the period of the signal ii. If we want to reproduce 55 minutes of this wave form, determine the how many (8 Marks) b. The output of a digital computer is at a rate of 64 kbps. If the roll off factors...
Communication System
Solve with ALL steps Please
QUESTION 3 Briefly explain the following Analog Pulse Modulation (APM): (i) Pulse Amplitude Modulation (PAM) Pulse Width Modulation (PWM) (iii) Pulse Position Modulation (PPM) (2 marks) (2 marks) (2 marks) b) There are several digital modulations techniques used to modulate digital signal. For a binary data 10111011, sketch the output waveform if the following modulator is used: Amplitude Shift Keying (ASK) (2 marks) Frequency Shift Keying(FSK) (2 marks) (iii) Phase Shift Keying (PSK)...
It is desired to sample the signal s (t) uniformly over time in order to be able to transmit in a digital channel.
a) What is the maximum time interval between samples required to allow a perfect reconstruction to the receiver?
b) How many samples are needed to perform the 4 hour breeding of this signal?
c) If a uniform 20-bit quantizer is used, what is the quantity of memory required, in bytes, to store these 4 hours of the...