복잡도가 감소된 반향제거 알고리즘의 분석 = An Analysis of Echo Cancellation AIgorithm with its Reduced Complexities

다국어 초록 (Multilingual Abstract)

This paper describes a new adaptive algorithm which can reduce the required computation quantities in the adaptive filter. The proposed adaptive algorithm uses olny the signs of the normalized input signal rather than the input signals when coefficients of the filter are adapted. By doing so, there is no need for the multiplications and divisions which are mostly responsible for the computation quantities. To analyze the convergence characteristics of the proposed algorithm, the condition and speed of the convergence are derived mathematically. Also, we simulate an echo canceller adopting this algorithm and compare the performances of convergence for this algorithm with the ones for the other algorithm. As the results of simulations, it is proved that the echo canceller adopting this algorithm shows almost the same performances of convergence as the echo canceller adopting the SIA algorithm.

목차 (Table of Contents)

• Ⅰ. 서론 3
• Ⅱ. 제안한 적응 알고리즘 4
• Ⅲ. 제안한 알고리즘의 수렴특성 분석 7
• Ⅳ. 시뮬레이션 및 결과 12
• Ⅴ. 결론 13