Pilot 신호를 이용한 OFDM채널추정 방법
박성익, 권선형, 김정창, 이재영, 김흥묵, 허남호
- 10644817 (2020.05.05)
14MR9100, (통합)융합형 실감방송 서비스 및 전송 기술 개발,
- A broadcast signal transmission apparatus and method using layered division multiplexing are disclosed. A broadcast signal transmission apparatus according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; a frame builder configured to generate a broadcast signal frame using the time-interleaved signal; and an orthogonal frequency division multiplexing (OFDM) transmitter configured to generate a pilot signal that is shared by a core layer corresponding to the core layer signal and an enhanced layer corresponding to the enhanced layer signal.
- KSP 제안 키워드
- Channel estimation(CE), Frequency division, Frequency division multiplexing, OFDM channel estimation, Orthogonal frequency division Multiplexing(OFDM), Pilot signal, Power Levels, Signal transmission, Time Interleaver, division multiplexing, layered division multiplexing, time-interleaved