Serially Concatenated Turbo Codes

The paper presents a new scheme of concatenated codes, referred to as Serially Concatenated Turbo (SCT) codes. The code is constructed as the serial combinations of two turbo codes, i.e. turbo Recursive Systematic Convolutional (RSC) codes and turbo Bose Ray Chaudhuri Hocquenghem (BCH) codes, linked by a pseudo-random interleaver. In comparison with the conventional turbo RSC codes, SCT codes have higher minimum distance values. Based on conducted simulations, it is found that SCT codes outperform turbo RSC codes at the waterfall and error floor regions, while they require reasonable number of iterations at their iterative decoding structure to achieve good performance.

[1]  John M. Shea,et al.  Reduced-complexity decoding for concatenated codes based on rectangular parity-check codes and turbo codes , 2001, GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270).

[2]  Alexandre Graell i Amat,et al.  Analysis and design of rate compatible serial concatenated convolutional codes , 2005, Proceedings. International Symposium on Information Theory, 2005. ISIT 2005..

[3]  Shu Lin,et al.  Two simple stopping criteria for turbo decoding , 1999, IEEE Trans. Commun..

[4]  John M. Shea,et al.  Concatenated parity and turbo codes , 2001 .

[5]  Jing Li,et al.  Product accumulate codes: a class of codes with near-capacity performance and low decoding complexity , 2004, IEEE Transactions on Information Theory.

[6]  Ralph Jordan,et al.  Irregular turbo codes and unequal error protection , 2001, Proceedings. 2001 IEEE International Symposium on Information Theory (IEEE Cat. No.01CH37252).

[7]  Dariush Divsalar,et al.  Serial Concatenation of Interleaved Codes: Performance Analysis, Design, and Iterative Decoding , 1997, IEEE Trans. Inf. Theory.

[8]  Daniel J. Costello,et al.  A distance spectrum interpretation of turbo codes , 1996, IEEE Trans. Inf. Theory.

[9]  F. Vatta,et al.  Hybrid concatenated codes with asymptotically good distance growth , 2008, 2008 5th International Symposium on Turbo Codes and Related Topics.

[10]  Alexandre Graell i Amat,et al.  Rate-Compatible Serially Concatenated Codes with Outer Extended BCH Codes , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.