Application of LT Codes in Mobile Multimedia Broadcasting System

This paper describes the key technologies in CMMB standard, and analyzes the scheme of error correction coding in physical layer. Based on this coding scheme, a method for LT coding structure in application layer is proposed and described. Simulation results show that it can effectively enhance restoration ability of information elements, and therefore improve the performance of the system against erasion. It is suitable for mobile multimedia broadcasting channels, especially for the data downloading and transmission services in which error free is required.