MITS5003 - Wireless networks and communication

[MITS5003: WIRELESS NETWORKS AND COMMUNICATION]

MITS5003 1
Question 1
From this question, it is found that the provided binary data is 101010000111 that may be
converted into analog waveforms using below modulation methods:
a. Two-level Amplitude Shift Keying
b. Two-level frequency-shift keying
c. Two-level Phase Shift Keying
d. Differential Phase shift keying

MITS5003 2
e. Four level Amplitude Shift Keying
f. Four level Phase Shift Keying
g. Eight level Amplitude Shift Keying

MITS5003 3
Question 2
It is argued that time required to transmit one signal is 1 μs and total time may be obtained by
performing the product of numbers of signals and 1 μs. for different modulation techniques the
values of time will be changed which are described below:
Two-level amplitude shift keying 12 μs
Two-level Frequency Shift Keying 12 μs
Two-level Phase Shift Keying 12 μs
Differential Phase shift keying 12 μs
Four level Amplitude Shift Keying 6 μs
Four level Phase Shift Keying 6 μs
Eight level Amplitude Shift Keying 4 μs
Question 3
As per the provided details, Fc= 1000 kHz
Fd= 50 kHz
M= 16
L= 4 bits
The value of frequency may be gathered by using the below equation:
In which “i’’ is variable that varies from 1 to 16 and rest of parameters are pre-defined in the
question. By putting all the values in the above equation, the frequency at different levels can be
gathered and represented in the below table: