Title :
On the Rateless Character of Irregular RA Codes
Author :
Sun, Rong ; Liu, Jingwei ; Zhang, Pingli ; Bai, Baoming
Author_Institution :
State Key Lab. on ISN, Xidian Univ., Xi´´an, China
Abstract :
This paper introduces the construction of systematic irregular RA codes. The encoding line is used to describe the graph structure of IRA codes. Two interleaving strategies for IRA codes are analyzed and it is shown that the two interleaving strategies are equal. The rateless character of IRA codes is also shown. The performances of IRA codes with different rate in binary erasure channel are simulated. Simulation results show that the IRA codes is capacity achieving. The error floor performance of IRA codes is analyzed and the modified encoding method is presented to lower the error floor.
Keywords :
channel coding; interleaved codes; binary erasure channel; digital fountain codes; encoding line; error floor performance; irregular RA codes; rateless channel coding; rateless character; Complexity theory; Decoding; Encoding; Parity check codes; Sparse matrices; Systematics; Tornadoes; LT code; digital fountain codes; error floor; irregular RA code; rateless code;
Conference_Titel :
Advanced Information Networking and Applications (WAINA), 2011 IEEE Workshops of International Conference on
Conference_Location :
Biopolis
Print_ISBN :
978-1-61284-829-7
Electronic_ISBN :
978-0-7695-4338-3
DOI :
10.1109/WAINA.2011.49
