Algebraic method for blind recovery of punctured convolutional encoders from an erroneous bitstream

• DOI: 10.1049/iet-spr.2010.0343
• Publication Date: 2012-05-12T00:41:58Z
• Authors: M. Marazin; R. Gautier; G. Burel
• Keywords: Puncturing; Convolutional code; Bitstream; Cyclic redundancy check

To enhance the quality of transmissions, all digital communication systems use error-correcting codes. By introducing some redundancy in informative binary data stream, they allow one to better withstand channel impairments. The design new coding schemes leads a perpetual evolution and, thus, cognitive radio receivers have be designed. Such will able blind estimate transmitter parameters. In this study, an algebraic method dedicated identification punctured convolutional encoders is presented. such great interest, because are embedded most transmission where puncturing principle used increase code rate reduce loss information introduced by encoder. After brief recall codes and construction equivalent code, both mother pattern developed when received bits erroneous. Finally, case studies presented illustrate performances our method.