Modern Coding Theory Based On Fountain Code Implementation In Embedded System

Abstract: Fountain codes are used in delay tolerant networks with low performance and encoding decoding complexity. Packet erasure is the major problem during transmission on wireless channel resulting in packet collisions. A digital fountain solves these problems by introducing the concept of segmentation and reassembly in order to avoid the total delay and packet loss. In addition to that the concept of cryptography is used to transmit the data in a secure manner. For that purpose the use of erasure code like Luby Transform(LT) code with LT encoder and LT decoder to achieve secure transmission of data. The LT encoder that are used at the source level for encoding the original data. Similarly the LT decoder that are used at the destination level are used for decoding the original data from the encoded data. The fountain codes are now used in the embedded systems for data encoding using Tarang F4 module. It is used to perform the data transfer between two terminals via serial port communication. The data transfer is done in wireless netwoks with the use of AT commands.

Keywords: Segmentation And Reassembly, Luby Transform code, LT Encoder, LT Decoder, AT commands