본 논문에서는 단일 주파수 망(Single Frequency Network: SFN)을 통해 지상파 DMB 신호를 서비스하기 위해 필요한 동일채널 중계기(On-Channel Repeater, OCR)의 요구사항에 대하여 고찰하고, 그러한 요구사항을 만족하기 위한 등화형 OCR의 구조 및 구현방법을 제안한다. 등화형 OCR은 짧은 시스템 지연을 가질 뿐만 아니라 송/수신 안테나의 낮은 분리도로 인한 궤환신호와 송신기와 중계기 사이의 다중경로 신호를 동시에 제거하여 높은 송신출력과 우수한 출력신호 품질을 보장한다. 또한, 본 논문에서는 전산실험을 통해 등화형 OCR의 성능을 살펴보고 실험실 테스트를 통해 실제 구현된 등화형 OCR의 성능을 검증한다.
KSP Keywords
single frequency network(SFN)
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