A NOVEL COMMUNICATION SYSTEM WITH LT ENCODING FOR ERASURE CHANNEL

A novel communication system model is proposed for erasure channels, whereby repeat request rates can be reduced and additional security can be achieved. The proposed system would make use of Luby Transform(LT) encoding to combat bit losses in the system and Triple Data Encryption Standard is used for encrypting the messages, so that secure transfer of information is made possible through the system. Luby Transform encoding can effectively recover original data from the received data even if only half of the encoded data is received properly. This property of Luby Transform encoding is made use of so that an opportunistic error correction layer is constructed. The bit losses in the system can be countered efficiently. Triple Data encryption Standard provides an additional security layer for messages whereby three 64-bit keys are used to encrypt the original data to obtain the cipher. The main real life applications are to enable secure communication within banking systems, online credit card payments, intranet password transfers, etc. with reduced rate of repeat request.