LT CODES

LT codes are the first class of fountain codes which are rateless erasure sparse graph codes. Such codes generate an unlimited amount of encoded symbols and transmit them, that's make them a good candidate for future transmissions. At the receiver, any number of the encoded symbols received which is equal or slightly greater than the number of the original symbols is sufficient to successfully decode the original data. The performance of such codes depends directly on the degree distribution chosen which we will focus on. In this paper, we analyze LT codes with their degree of distribution.