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    • 6. 发明申请
    • DIGITAL VIDEO BROADCASTING - CABLE SYSTEM AND METHOD FOR PROCESSING RESERVED TONE
    • 数字视频广播 - 用于处理保留音的电缆系统和方法
    • WO2010087667A2
    • 2010-08-05
    • PCT/KR2010000600
    • 2010-02-01
    • SAMSUNG ELECTRONICS CO LTDYUN SUNG RYULLEE HAK JUKIM JAE YOELLIM YEON JUMYUNG SE HO
    • YUN SUNG RYULLEE HAK JUKIM JAE YOELLIM YEON JUMYUNG SE HO
    • H04N7/015H04N7/10
    • H04L27/2618H04H20/78H04L5/0044
    • A Digital Video Broadcasting-Cable (DVB-C) system and a processing method for reserved tones are provided. A transmitter determines a position of broadcast data and a position of reserved tones in a frame and sends a broadcast signal into which the broadcast data and the reserved tones are inserted. A receiver determines the position of reserved tones in a received broadcast signal and extracts broadcast data from the broadcast signal in consideration of the determined position of the reserved tones. The system and method may compensate for the peak power of broadcast data to be transmitted through a multi-channel bundle, by inserting reserved tones into the whole multi-channel bundle with combined channel bands. This may reduce the Peak to Average Power Ratio (PAPR) of broadcast signals in the DVB-C system and thereby improve the performance of the DVB-C system while still adopting Orthogonal Frequency Division Multiplexing (OFDM).
    • 提供了数字视频广播电缆(DVB-C)系统和预留音调的处理方法。 发送器确定广播数据的位置和预定音调在帧中的位置,并发送广播数据和预留音调插入其中的广播信号。 接收机确定接收到的广播信号中的预留音调的位置,并考虑确定的预定音调的位置从广播信号中提取广播数据。 该系统和方法可以通过将预留音调插入到具有组合频道频带的整个多频道束中来补偿要通过多频道束传输的广播数据的峰值功率。 这可以降低DVB-C系统中广播信号的峰均功率比(PAPR),从而在仍然采用正交频分复用(OFDM)的同时改善DVB-C系统的性能。