Optimized turbo codes for delay constrained applications

Author

Daneshgaran, Fred ; Mondin, Marina

Author_Institution

Dept. of Electr. & Comput. Eng., California State Univ., Los Angeles, CA, USA

Volume

48

Issue

1

fYear

2002

fDate

1/1/2002 12:00:00 AM

Firstpage

293

Lastpage

305

Abstract

We present the results of the optimization applied to the design of interleavers for rate-1/n parallel concatenated convolutional codes (PCCC) tailored to specific recursive systematic convolutional (RSC) constituent codes. The emphasis is on low-latency codes associated with interleavers of block length less than or equal to 160. The error floors of the optimized codes are significantly lower than those associated with the use of random interleavers. The distance spectra of the equivalent block codes resulting from trellis termination applied to PCCC are evaluated and used to obtain asymptotic bit error rate (BER) curves for the optimized codes

Keywords

concatenated codes; convolutional codes; delays; error statistics; interleaved codes; optimisation; turbo codes; BER curves; PCCC; asymptotic bit error rate; delay constrained applications; distance spectra; error floors; error-correcting codes; interleaver block length; interleaver design; low-latency codes; optimized turbo codes; parallel concatenated convolutional codes; random interleavers; recursive systematic convolutional constituent codes; trellis termination; Bit error rate; Block codes; Concatenated codes; Constraint optimization; Convolutional codes; Delay; Design optimization; Floors; Iterative decoding; Turbo codes;

fLanguage

English

Journal_Title

Information Theory, IEEE Transactions on

Publisher

ieee

ISSN

0018-9448

Type

jour

DOI

10.1109/18.971759

Filename

971759