Blind Recognition of Block Code Parameters in the Presence of High SNR Using Statistical Techniques

Document Type : Original Article

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Abstract

Blind recognition of error correction codes parameters from intercepted bit-stream at the receiver side, is highly considered in military and commercial applications. In fact, identification of the encoding scheme used in the transmitter without any prior information, is a challenging task to the adversary. Several methods have been presented for blind code recognition. In this paper, a statistical method for recognition of  the length of the code word and the length of the block of information is presented. This scheme not only is resistant to error, but also its performance sustains in long codes. In this work, the method has been tested using some clustering algorithms such as K-Means and Jenks Natural Breaks. Then, a novel method to extract features of systematic binary linear block codes has been presented. Simulation results in MATLAB show that the proposed method, in addition to having low computational complexity and high performance rate, have an acceptable result in identifying systematic block codes with long lengths and even at high error levels.

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References

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Journal of Advanced Defense Science & Technology
Volume 10, Issue 4 - Serial Number 38
September 2020
Pages 373-381

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History

  • Receive Date: 15 July 2018
  • Revise Date: 09 October 2018
  • Accept Date: 20 November 2018
  • Publish Date: 21 January 2020

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