RF based Code Modulation

RF BASED CODE MODULATION

DECRYPTION & ENCRYPTION FOR SECURED

WIRELESS COMMUNICATION

Secret Message Transfer System for Military Applications

ABOUT THE PROJECT

Our aim of the project is to protect the data from the ensnares. The

proposed system is generally used in security systems specifically for

border or defense or military security applications.

In such circumstances, generally the Military Chief do not have a

flexible communication system as well as they aren’t supposed to have

voice enabled communication systems.

The base station is elsewhere wherein all the efficient

Military Systems that communication methods are available and prevailing. But at

process classified the borders, a single room or communication environment

information must operate isn’t available. In such a scenario, we need an efficient

communication strategy with utmost secure mechanism.

in a secure manner; that

is, they must adequately There exists lot of encryption – decryption algorithms

prevailing already, but every such algorithm has certain flaws

protect information either facing a threat in the communication channel or the

against unauthorized methodology of transmission or the bandwidth.

disclosure, modification, To accomplish this, we have used a PC as a sender

and withholding

The computer will Encrypt the data using generating a

duplicate Character for a real one.

The message to be sent is fed in to the computer for different units. The computer will encode

the data using PSEUDO RANDOM BINARY SEQUENCE by generating a 7-bit access code for

each units and the code will be sent along with the mixed data of other unit’s message also

At the receiving end the key is accessed and entered and then

the microcontroller will then decode the Received data and

separates the data for different units and displays the

message on the display. The communication takes place

through RS232 Port, using RF frequency transmitters and

receivers

RF BASED CODE MODULATION

DECRYPTION & ENCRYPTION FOR SECURED

WIRELESS COMMUNICATION

Secret Message Transfer System for Military Applications







RF Tx Module

433.92MHz, ISM

Band, AM





Power

RS232

Supply









RF Rx Module

Join at North

Camp Army



Power Supply Digital

Outputs

Microcontroller

Move towards

South Direction









Alarm Visual

Output Alert

Arms &

Ammunition

Coming, Collect







4 X 3 Matrix

Key Pad

Power Supply