파일럿 분할을 통해 궤환신호를 제거하는 복조형 동일채널 중계장치 및 그 방법
박성익, 이용태, 이지봉, 김형남, 임종수, 김완진, 손경식, 이수인
- 8364074 (2013.01.29)
07MR3800, OFDM 전송방식에서의 동일채널 RF 중계기술 개발,
- Provided is an on-channel repeater capable of removing feedback signals based on pilot partitioning, which can efficiently remove a feedback signal by quickly coping with even a situation in which a feedback channel changes rapidly, by reducing a filter-coefficient update interval, i.e., increasing the number of times of filter-coefficient creation, through pilot partitioning, and a method thereof. The on-channel repeater includes: a receiver for receiving a signal; a subtractor for subtracting a replica of a feedback signal from the signal received in the receiver to remove the feedback signal; a replica creator for creating a filter coefficient using pilot partitioning, creating a replica of the feedback signal using the created filter coefficient, and feeding back the created replica to the subtractor; and a transmitter for transmitting an output signal of the subtractor.
- KSP 제안 키워드
- Feedback channel, Filter coefficients, Update interval, feedback signal