적응보상기를 채용한 주파수영역 적응 잡음제거 시스템 및 알고리즘 = Frequency-domain Adaptive Noise Canceller and its Algorithm with Adaptive Compensator

다국어 초록 (Multilingual Abstract)

The adaptive filter is a valuable signal processing tool which finds applications in such areas as interference and echo cancellation, channel equalization, linear prediction, and spectral estimation. The time-domain adaptive noise canceller(time-domain ANC) and its algorithms had been introduced that can restore the original signal more accurately especially when the correlatedness between the original signal and the interference signal is small. The frequency-domain approaches in adaptive filtering is well known to have several advantages over the time-domain approaches.
In this paper, the above-proposed time-domain ANC with the adaptive compensator is transformed into frequency-domain ANC with the adaptive compensator. An compensated frequency-domain least mean-squares(CFLMS) algorithm is presnted. The algorithm is based on the "over-lap-save" technique used in frequency-domain filtering. The performance of the algorithm is illustrated by a simullation.

목차 (Table of Contents)

• Abstracts
• Ⅰ. 서론 = 143
• Ⅱ. 주파수 영역 적응 필터 = 144
• Ⅲ. 적응 보상기를 채용한 주파수 영역상의 적응 필터 = 146
• Ⅳ. 최적 필터(Optimum filter) = 150
• Ⅴ. 적응 알고리즘 = 150
• Ⅵ. 시뮬레이션 및 검토 = 152
• Ⅶ. 결론 = 153
• 참고문헌 = 154