Feedback using dummy bits

Feedback is used for improvement of Soft Input Decryption. Soft Input Decryption enables integration of decryption into the decoding process for correction of cryptographic check values. This paper develops an idea of improvement of feedback by usage of dummy bits. Usage of feedback relies on existence of two information: the corrected (or known) information is used as a feedback for correction of another information. In this paper intentionally added dummy bits are used as known information for a feedback to information which has to be corrected. The results of computer simulations without and with puncturing have been presented and discussed.