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5G

UNDERWATER EFFECTIVE DATA TRANSMISSION USING VISIBLE LIGHT COMMUNICATION WITH 5G DATA RATE


ABSTRACT
            Visible Light Communication (VLC) is emerging as a next generation data transmission (5G) method for short-range communication applications and the effect of data modulation on the emitted light quality of phosphor converted white LEDs. A software architecture is developed to process and stream data. The results showed that provided the expected average current driving the LEDs remains unchanged then the emitted light quality will stay the same. DC-balanced modulating signal, with a non-varying average value, any fluctuations in the instantaneous driving current due to data modulation do not have any significant impact on the measured light quality metrics.

Visible light communication applications therefore, a DC-balanced signalling becomes a prerequisite if the expected quality of light emitted by the LEDs is to be preserved. The experimental prototype consists includes transmitter and receiver unit from which the data transmission can be made by means of a visible light which is a wireless data transmission and the data can be monitored by means of pc. The software architecture is bridged with a hardware section, which facilitates free-space VLC channel, over a Universal Serial Bus (USB) to serial interface. A particularly attractive feature of our system is that it uses commonly available, low-cost components which enables its implementation in everyday applications. The prototype includes transmitter and receiver unit. The transmitter unit consists of voice playback with a pc input from which the voice is transmitted via lifi transmitter and the voice gets received in a lifi receiver and amplified in voice amplifier.






BLOCK DIAGRAM









PIC MICRO
CONTROLLER


PC
POWER SUPPLY
LCD
LI-FI
TRANSMITTER MODULE


 
 


















RECEIVER



POWER SUPPLY







PIC MICRO
CONTROLLER

LI-FI RECEIVER
MODULE
DETECTOR
AMPLIFIER

PC
 




































EXISTING SYSTEM

·        VLC can be deemed appropriate without quantifying their impact on the light emitted by the transmitting leds.
·        Power consumption of existing system is high compared to proposed system.
·        In existing system, inference and noise of the signal is high.
·        Power consumption of existing system is high compared to proposed system.
·        Installation cost and environmental hazards are high compared to proposed system.


PROPOSED SYSTEM
·        Predictable and matched luminous intensity and chromaticity (i.e. Light quality) from each led.
·        Power consumption is very low when compared to the existing system.
·        The light quality of leds used for lifi, the modulating signal is dc balanced based on the user expectation.
·        The proposed system can be used in situations where a household has many appliances with audio output.
·        Good perceptible audible quality PCM streaming
·        Installation cost and environmental hazards are less in proposed system.



HARDWARE REQUIRMENT

•      MICROCONTROLLER (PIC16F877A)
•      VLC MODULE
•      PIR SENSESOR
•      ULTRASONIC SENSESOR
•      HEART BEAT SENSESOR
•      LCD
•      BATTERY
•      PERSONAL COMPUTER
•      VOICE PLAYBACK
•      SPEAKER


SOFTWARE REQUIRMENT

•      MP LAB IDE
•      EMBEDDED C


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