Source model aided lossless turbo source coding

Conference: TURBO - CODING - 2006 - 4th International Symposium on Turbo Codes & Related Topics; 6th International ITG-Conference on Source and Channel Coding
04/03/2006 - 04/07/2006 at Munich, Germany

Proceedings: TURBO - CODING - 2006

Pages: 6Language: englishTyp: PDF

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Dütsch, Nicolas; Hagenauer, Joachim (Institute for Communications Engineering (LNT), Munich University of Technology (TUM), Germany)
Graf, Sebastian (Institute of Communications and Navigation (NAV), Munich University of Technology (TUM), Germany)
García-Frías, Javier (Department of Electrical and Computer Engineering, University of Delaware, USA)

The integration of a source model into lossless source coding based on punctured turbo codes is considered. We use the turbo principle to iteratively estimate the source statistics and to compensate the errors due to compression. In order to cope with the critical part of joint estimation and decoding, the start-up, we propose the use of an asymmetric turbo code with one recursive Quick-Look-In component code. Moreover, we present an alternative puncturing method, which ensures the compression of the data in a predetermined number of reconstruction attempts. Simulation results show that the proposed scheme outperforms traditional source codes when compressing data with memory.