logo

Modulation Techniques for Binary Data

Convert binary data into analog waveforms using different modulation techniques, compute frequency assignments, draw waveforms and constellation diagrams, explain error detection process, compute frame check sequence, compute transmitted signal using Direct Sequence Spread Spectrum, compare Infrastructure and ad hoc modes in WLAN

15 Pages1797 Words74 Views
   

Added on  2022-11-26

About This Document

Learn about different modulation techniques for converting binary data into analog waveforms. Understand ASK, FSK, PSK, DPSK, and more. Get detailed explanations and diagrams.

Modulation Techniques for Binary Data

Convert binary data into analog waveforms using different modulation techniques, compute frequency assignments, draw waveforms and constellation diagrams, explain error detection process, compute frame check sequence, compute transmitted signal using Direct Sequence Spread Spectrum, compare Infrastructure and ad hoc modes in WLAN

   Added on 2022-11-26

ShareRelated Documents
1. Convert the binary data “011010” into analog waveforms using following
modulation techniques:
a. Two level Amplitude Shift Keying
b. Two level Frequency Shift Keying
c. Two level Phase Shift Keying
d. Differential Phase shift keying
e. Four level Amplitude Shift Keying
f. Four level Phase Shift Keying
g. Eight level Amplitude Shift Keying
ANS:
a. Two level Amplitude Shift Keying
Two level ASK means Binary ASK. Due to the multiplication the
ASK output will present only a binary 1 is to be transmitted.
ASK output corresponding to binary 0 is zero.
b. Two level Frequency Shift Keying
Two level FSK called as Binary FSK. The output of a FSK
modulated wave is high in frequency for a binary 1 input and is low
in frequency for a binary 0 input.
Modulation Techniques for Binary Data_1
c. Two level Phase Shift Keying
In BPSK carrier phase is changed between 0 degree and 180
degree by the bipolar digital signal.
d. Differential Phase shift keying
DPSK combines two basic operations
1) The differential encoding and
2) Phase shift keying
Modulation Techniques for Binary Data_2
e. Four level Amplitude Shift Keying
In four level Amplitude Shift Keying amplitude of carrier signal
changes in four levels according to the input digital signal which is
divide in 2 bit symbols.
Here binary input is 011010 ,so divide this in 2 bit symbol like this
01 10 10
For 00, 01, 10, 11 inputs 4 different amplitude carrier signal will
get at the output.
f. Four level Phase Shift Keying
In Four level PSK carrier changes in 4 phases (0,90,180,270
degrees) according to the 2 bit(symbol) input digital signal.
Modulation Techniques for Binary Data_3
For 00, 01, 10, 11 input signal phases are 0, 90, 180, 270 degree
respectively.
g. Eight level Amplitude Shift Keying
In eight level ASK amplitude of carrier signal changes in eight
level according to the binary input signal which is 3bit symbol.
Here binary input is 011010 ,so divide it into 3 bit symbol like this
011 010
For 000 , 001, 010, 011, 100, 101, 110, 111 these eight binary
input signal 8 different amplitude assigned.
2. With fc = 500 kHz, fd = 25 kHz, and M = 16 (L = 4 bits), compute the
frequency assignments for each of the sixteen possible 4-bit data
combinations.
Modulation Techniques for Binary Data_4

End of preview

Want to access all the pages? Upload your documents or become a member.

Related Documents
Wireless Communication
|16
|817
|455

1. Convert the binary data “011010” into analog wavefor
|15
|2725
|1

Modulation Techniques, CRC, Spread Spectrum, WLAN, TCP/IP, Cellular Communications
|13
|2058
|340

Comparison of Different Modulation Techniques and Error Detection Process
|17
|2315
|81

Amplitude Shifting Keying and Frequency Shift Keying
|16
|1420
|253

Wireless Network and Communication
|12
|980
|335