Title :
Generation of Rate-Compatible LDPC Codes Based on Linear Transformation
Author :
Chen, Ningxia ; Chang, Yongyu ; Yang, Dacheng
Author_Institution :
Wireless Commun. Res. Center, Beijing Univ. of Posts & Telecommun., China
Abstract :
Practical communication systems require coding rates to be compatible. This report presents a new method to design rate-compatible low-density parity-check (LDPC) codes. The method is based on linear transformation and different from the existing methods. Decomposing rows of the parity-check matrices can produce the parity-check matrices for lower rates. It can also maintain low error floors for the codes at all rates, and the codes can be decoded conveniently and efficiently. It can achieve high throughput in HARQ with FEC system.
Keywords :
automatic repeat request; matrix algebra; parity check codes; FEC system; Gaussian approximation; HARQ; bipartite graph; coding rates; degree distribution; density evolution; hybrid automatic repeat request; linear transformation; low error floors; low-density parity-check codes; parity-check matrices; rate-compatible LDPC codes; Bipartite graph; Decoding; Design methodology; Forward error correction; Gaussian approximation; Hardware; Matrix decomposition; Parity check codes; Throughput; Wireless communication; Density Evolution (DE); Gaussian Approximation (GA); HARQ; LDPC codes; bipartite graph; degree distribution; extending; rate-compatible;
Conference_Titel :
Communications and Electronics, 2006. ICCE '06. First International Conference on
Conference_Location :
Hanoi
Print_ISBN :
1-4244-0568-8
Electronic_ISBN :
1-4244-0569-6
DOI :
10.1109/CCE.2006.350816
