BPSK modulation using CD 4016

Simulation of BPSK modulation using CD4016 in proteus software

2. PRESENTED BY
MOHAMMAD HANNAN(21304014)
UNDER THE GUIDANCE OF
PROF. DR. R. NAKKERAN
M.TECH IN ELCTRONICS AND COMMUNICATION ENGG.
DEPARTMENT OF ELECTRONICS ENGINEERING
SCHOOL OF ENGINEERING AND TECHNOLOGY
PONDICHERRY UNIVERSITY
PONDICHERRY(605014)

3. BPSK
WORKING
BLOCK DIAGRAM
DESCRIPTIONS &WORKING OF COMONENTS
SCHEMATIC DESIGN
OUTPUT
APPLICATIONS
ADVANTAGES & DISADVANTAGES
CONCLUSION

4. In binary phase shift keying (BPSK)
modulation scheme, the phase of a carrier is
changed in accordance with the digital pulse
signals. BPSK modulator is basically a phase
modulator. Here the transmitted signal is a
sinusoid of fixed amplitude. It has one fixed
phase when the data is at one level and
when the data is at the other level, phase is
shifted by 180 degree. Binary phase shift
keying method has variety of applications in
digital communications systems such as the
wireless LAN standard, IEEE 802.11, digital
modems, wireless telephone networks etc.

5. An Op amp inverting amplifier with gain 1 is used to invert
the phase of the input sine wave

6. Sine wave can be obtained from a function generator or
by using a RC phase shift oscillator.
Two switches inside the quad analog switch CD 4016 are
used in the circuit . When the enable input of one gate is
high, the input will appear at the output.
When the binary data is 1, sine wave is switched to
output because the sine wave is connected to 1st switch
and the binary data is applied to enable pin (13th pin) of
1st switch.
When binary data is 0, the 1st switch is disabled and
2nd switch is enabled using NOT gate arrangement. Thus
we get an inverted sine at the output.
The output pins of both first and second switches are
shorted and the output is taken from it. The block
diagram is self explanatory.

8. RESISTOR(10KΩ)
741 OP AMP
CD 4016 IC
NOT GATE 7404
ETC……..

9. The CD4016 is a CMOS IC with four analog switches, which can
be controlled individually using a control pin. The signal can
flow in either direction between the two pins of each switch.
Each switch has an enable pin (A) and two input/output pins (X
and Y

10. The 741 Op Amp IC is a monolithic integrated circuit, comprising
of a general purpose Operational Amplifier. It was first
manufactured by Fairchild semiconductors in the year 1963. The
number 741 indicates that this operational amplifier IC has 7
functional pins, 4 pins capable of taking input and 1 output pin

11. The 7404 is a high-speed CMOS Logic Quad NOT Gate. The 7404
is also known as Hex inverter. ... The NOT gate consists of only
one input and one output. A NOT gate is used to output the
Boolean inverse of the applied input. Hence the name 'Digital
Inverter' or 'Inverting buffer

12. A resistor is a two-terminal electrical component which is
used in a circuit element. Resistors are used to reduce
the flow of current and also adjust the signal levels

15. It is used in OFDM and OFDMA to modulate the
pilot subcarriers used for channel estimation and
equalization. As we know different channels are
used for specific data transmission in cellular
systems
These are used for time/frequency
synchronization and channel
estimation/equalization purpose
BPSK modulation is used by most of the cellular
towers for long distance communication or
transmission of the data

16. It is most robust modulation technique due to
the fact that binary 1 and 0 are separated by 180
degree phase shift of the carrier. Due to this
property, BPSK modulated data can travel longer
distances when transmitted from base station or
subscriber stations
The main advantage of phase shift keying is that
it allows data to be carried along a radio
communications signal much more efficiently
than with frequent shift keying. PSK is a digital
modulation scheme that transports data by
changing the phase of the carrier wave.

17. In BPSK modulation, one bit is carried by one
single analog carrier. Hence data rate in bits per
second is same as the symbol rate. This is half in
comparison to the QPSK modulation technique
and many times less compare to other higher
modulation techniques such as 16QAM, 64QAM
etc
Due to above reason, BPSK is not bandwidth
efficient modulation technique compare to other
modulation types

18. Simon Haykin," Digital Communication" Edition,
2006
G. Tharakanatha, SK. Mahaboobkamalbasha,
Vijay Bhaskarchanda, I. Hemalatha
(2013):Implementation and Bit Error Rate
analysis of BPSK Modulation and Demodulation
Technique using MATLAB, International Journal of
Engineering Trends and Technology (IJETT) –
Volume 4 Issue 9-Sep 2013.pp:4010-4014.