Title :
Turbo decoding: Why stopping-criteria do work
Author :
Heim, Axel ; Sorger, Ulrich
Author_Institution :
Inst. of Telecommun. & Appl. Inf. Theor., Ulm Univ., Ulm
Abstract :
The convergence of iterative decoding schemes is considered. The class of dually coupled codes is recalled, being a super class to both turbo and LDPC codes. It is proven that the output L-values of a turbo decoder cannot grow to infinity, while those of an LDPC decoder can. Finally, a new decoder parameter is introduced by which the convergence behavior can be controlled.
Keywords :
convergence; iterative decoding; parity check codes; turbo codes; LDPC codes; convergence behavior; decoder parameter; iterative decoding scheme; turbo decoding; Belief propagation; Computer science; Concatenated codes; Convergence; Equations; H infinity control; Information theory; Iterative decoding; Parity check codes; Turbo codes; Belief-Propagation; Bit-Information set; Convergence; Stopping-Criteria; Turbo decoding;
Conference_Titel :
Turbo Codes and Related Topics, 2008 5th International Symposium on
Conference_Location :
Lausanne
Print_ISBN :
978-1-4244-2862-5
Electronic_ISBN :
978-1-4244-2863-2
DOI :
10.1109/TURBOCODING.2008.4658707
