Date Added: Aug 2010
LT codes promise reliable transmissions of data over erasure channels. They also work satisfactorily over interference channels after Cyclic Redundancy Check (CRC) is introduced into the transmission system. In this paper, the authors will propose a set of codes named Improved Binary Repetition Codes (IBRCs) derived from block repetition codes using cyclic shifts. With comparatively lower complexity, IBRCs serve as an inner channel codes concatenated after LT pre-coding to maintain the reliability of LT codes over interference channels without using additional CRC bits.