Journal of Internet Computing and Services (인터넷정보학회논문지)

Korean Society for Internet Information (한국인터넷정보학회)
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Recursive Estimation of Biased Zero-Error Probability for Adaptive Systems under Non-Gaussian Noise

비-가우시안 잡음하의 적응 시스템을 위한 바이어스된 영-오차확률의 반복적 추정법

  • Kim, Namyong (Division of Electronics, Information & Communication Engineering, Kangwon National University)
  • Received : 2015.08.05
  • Accepted : 2015.12.22
  • Published : 2016.02.29
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Abstract

The biased zero-error probability and its related algorithms require heavy computational burden related with some summation operations at each iteration time. In this paper, a recursive approach to the biased zero-error probability and related algorithms are proposed, and compared in the simulation environment of shallow water communication channels with ambient noise of biased Gaussian and impulsive noise. The proposed recursive method has significantly reduced computational burden regardless of sample size, contrast to the original MBZEP algorithm with computational complexity proportional to sample size. With this computational efficiency the proposed algorithm, compared with the block-processing method, shows the equivalent robustness to multipath fading, biased Gaussian and impulsive noise.

바이어스된 영-오차확률 (biased zero-error probability)과 이에 관련된 알고리듬은 매 반복시간마다 합산과정을 지니고 있어 많은 계산상의 부담을 요구한다. 이 논문에서는 바이어스된 영-오차확률에 반복적 접근법을 적용한 알고리듬을 제안하였고 천해역 통신채널과 충격성 잡음 및 바이어스된 가우시안 잡음이 혼재한 실험 환경에서 성능을 비교하였다. 샘플 사이즈에 비례하는 계산 복잡도를 지닌 기존 알고리듬과 달리 제안한 반복적 방식은 샘플 사이즈와 무관하여 계산량의 부담을 크게 줄였다. 이러한 계산효율 특성을 지닌 제안한 알고리듬은 블록 처리방식의 기존 알고리듬과 비교하여 다중경로 페이딩, 바이어스된 잡음 및 충격성 잡음에 대한 강인성에서 동일한 성능을 나타냈다.

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