The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Adaptive Interference Cancellation Method in Wireless Repeater System

무선 중계 시스템에서의 적응 간섭 제거 방식

  • Han, Yong-Sik (Dept. of Electronic Communications. Gumi University)
  • 한용식 (구마대학교 전자통신과)
  • Received : 2016.04.20
  • Accepted : 2016.05.24
  • Published : 2016.05.31
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Abstract

The mobile communication service is widely used and the repeaters is rapidly increasing because of the extending service areas. we propose a new Signed CMA(: Constant Modulus Algorithm) algorithm for ICS(: Interference Cancellation System) as a larger service area of mobile communication service. The proposed Signed CMA algorithm improved performances by adjusting step size values. We showed that the proposed algorithm could improve the Mean Square Error(: MSE) performance of Signed CMA. MATLAB(: Matrix Laboratory) is employed to analyze the proposed algorithm and to compare it with the experimental results. At the convergence of 1000 iteration state, the MSE(: Mean Square Error) performance of the proposed Signed CMA algorithm with step size of 0.0065 is about 5 dB better than the conventional CMA algorithm.

이동통신서비스가 넓게 확대되고, 서비스영역의 확대로 인해 중계기가 급속히 증가하고 있다. 이동통신 서비스의 큰 서비스 구역으로 간섭제거시스템을 위한 새로운 Signed CMA알고리즘을 제안한다. 제안된 Signed CMA알고리즘은 조정된 스텝사이즈 값에 의해 성능이 개선된다. 우리는 Signed CMA의 평균자승에러를 개선한다. 매트랩은 실험결과에 맞춰 제안된 알고리즘과 비교 분석하여 사용한다. 수렴횟수 1000번일 때 스텝사이즈 0.0065를 가진 제안된 Signed CMA알고리즘의 최소자승에러 성능이 기존 CMA 알고리즘보다 약 5 dB 더 낫다.

Keywords

References

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