본 논문에서는 Zenith/ATI가 제안하여 ATSC DTV 표준 개정안으로 채택된 Enhanced-VSB(E-VSB) 시스템에 대한 필드 테스트 절차 및 결과를 기술하고, 그 결과를 다양한 각도에서 분석한다. 대전에서 수행된 필드 테스트에서는 E-VSB 시스템의 성능 개선 효과를 분석하기 위해 안테나 종류에 따른 실내 및 실외에서의 수신여부, 잡음 마진 및 수신가능 방위각 등을 측정하였다. 또한, 본 논문에서는 E-VSB 시스템과 기존의 8-VSB 시스템 사이의 상호 호환성(backward compatibility)을 검증하고, 테스트 지점 선정, 송신기 및 측정 차량 구성에 관해서 점검한다. 필드 테스트 결과에 의하면, E-VSB 시스템은 실내 수신과 같은 다중경로가 많은 난시청 환경에서 특히 우수한 성능을 보였을 뿐만 아니라 기존 8-VSB 시스템과 상호 호환성을 유지하였다.
KSP Keywords
Backward compatibility
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