DOCSIS 3.1 하향 스트림 시스템에서 Roll-off 구간 추정 및 검출 방법
배재휘, 허남호, 이제원, 정준영, 송진혁, 최동준
- 10700895 (2020.06.30)
16HR1400, 광 IP 네트워크 기반 스마트 미디어 양방향 연동을 위한 RF-signal over IP 기술 개발,
- Disclosed are a roll-off period detection method, a symbol starting point detection method, a fractional frequency offset estimating method, and an OFDM downstream system using the same. A method of detecting a roll-off period in an OFDM downstream system according to an embodiment of the present disclosure may include: generating a temporary roll-off period by applying a windowing function to a signal having a preset length; and detecting a roll-off period based on any one of a cross correlation and a sum of differences between a detection target signal included in a range of two OFDM symbol signals based on a detection starting point, and the temporary roll-off period.
- KSP 제안 키워드
- Cross-Correlation, DOCSIS 3.1, Detecting method, Detection Method, Estimating method, Fractional frequency, Roll-off, Roll-off Period, Starting point, Windowing function, fractional frequency offset, frequency offset, period detection, point detection