Title :
Interleaver design methods for turbo codes
Author :
Andrews, Kenneth S. ; Heegard, Chris ; Kozen, Dexter
Author_Institution :
Cornell Univ., Ithaca, NY, USA
Abstract :
It is generally assumed that when a turbo decoder is operating at low bit error rates, error sequences have small Hamming weights. From this, and properties of turbo encoders, a mathematical structure is developed for interleaver design, permitting the identification of quantitatively optimal interleavers. Simulations show the math captures some but not all the essential characteristics of a successful interleaver. Modifying a random interleaver according to the mathematical ideas gives excellent simulation results
Keywords :
decoding; identification; interleaved codes; optimisation; random processes; turbo codes; Hamming weights; error sequences; identification; interleaver design methods; low bit error rates; mathematical structure; quantitatively optimal interleavers; random interleaver; simulations; turbo codes; turbo decoder; turbo encoders; Bit error rate; Code standards; Computational modeling; Computer simulation; Design methodology; Feedback; Filters; Hamming weight; Iterative decoding; Turbo codes;
Conference_Titel :
Information Theory, 1998. Proceedings. 1998 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-5000-6
DOI :
10.1109/ISIT.1998.709025
