잡음 환경에서 통계적 방법을 이용한 선형 피드백 시프트 레지스터 추정

초록

In non-cooperative scenario, channel code, interleaver, spreading code and linear feedback shift register(LFSR) should be estimated. In particular, the Berlekamp-Massey algorithm is generally used to estimate the pseudo-random number generated by the LFSR in error-free situation. However in a noisy environment, because of the errors, it is difficult to estimate the correct LFSR. In this paper, we propose the statistical method to estimate the LFSR in a noisy environment by comparing the number of errors due to the difference of the given sequence and generated sequence with the number of errors occurred by the noisy environment, and analyze the performance of estimation method.

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