Application of LT code technology in deep space communication

Abstract

Deep space communications have characteristics such as long delay, high code error rate and easily broken link etc. Easily broken links may lead to a certain degree of random flash break of Telemetry Tracking & Command signals, which in turn will result in the inconsiderable loss of data. Reliable downlink channel is necessary for deep space communication due to the distance between spacecraft and ground control station, the channel is effected by many interference factors so random and burst error are unavoidable. Integrity of fountain code can be considered in deep space communication. A special class of fountain code is furnished by LT code which solves the issue of data frames in deep space communication. Based on the performance concatenation of LT code and LDPC code provide more reliable solution for acquisition of deep space communication.