본 논문에서는 차세대 ATSC 3.0 표준 기반 단일주파수망 (Single frequency network, SFN) 지상파 방송시스템에서의 송신기 식별 (Transmitter identification, TxID) 기술을 살펴보고 그 성능을 분석한다. SFN 기반 지상파 방송은 복수의 송신기를 동일한 주파수 대역에서 운용하는 것에서 발생하는 간섭으로 인한 영향을 최소화하기 위해 적절한 망 설계를 필요로 한다. 용이한 망 설계를 위해, ATSC 3.0 물리계층 표준은 TxID 기술을 통해 개별 송신기에서 전송된 신호를 판별할 수 있도록 지원한다. 이에 본 논문에서는 ATSC 3.0 표준에서 지원하는 TxID 신호 생성 및 검출 기술을 소개한다. 더불어, 전산 실험을 통해 해당 TxID 기술의 식별 성능이 TxID 신호의 삽입 준위가 매우 낮은 환경에서도 보장됨을 확인한다.
KSP Keywords
ATSC 3.0, Transmitter Identification, single frequency network(SFN)
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