Title :
Adaptive SNR algorithm for turbo codes
Author :
Hou, Jia ; Lee, Moon Ho
Author_Institution :
Inst. of Inf. & Commun., Chonbuk Nat. Univ., Chonju, South Korea
Abstract :
The sensitivity of the iterative maximum a posteriori probability (MAP) decoder to the initial channel values is investigated and a simple adaptive signal-to-noise ratio (SNR) algorithm operating within the delta variances from two MAP decoders is proposed. It can improve the BER by about 0.3 dB without much additional hardware complexity.
Keywords :
error statistics; iterative decoding; maximum likelihood decoding; turbo codes; adaptive signal-to-noise ratio algorithm; bit error rate; delta variance; iterative maximum a posteriori probability decoder; turbo code;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030066
