Application of Turbo Codes'Extrinsic Information Based on SISO Model
Juntao Li · Journal of Projectiles.Rockets.Missiles and Guidance · 2005
In this paper,the exact Definition of extrinsic information is given,and interprets the role of extrinsic information when it is used in Iterative decoding.Based on SISO model,we show two methods which use extrinsic information in different way.We also open out why BER reducing when the number of loop increasing.Emulational results prove our analysis.At last,use the rules of globally optimal,the rational using of extrinsic information is discussed.