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TERMINAL TRANSMISSION APPARATUS FOR PROVIDING MULTIMEDIA SERVICE VIA SATELLITE COMMUNICATION LINK AND METHOD FOR PROVIDING MULTIMEDIA SERVICE USING THE SAME
TERMINAL TRANSMISSION APPARATUS FOR PROVIDING MULTIMEDIA SERVICE VIA SATELLITE COMMUNICATION LINK AND METHOD FOR PROVIDING MULTIMEDIA SERVICE USING THE SAME
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机译:通过卫星通信链路提供多媒体服务的终端传输装置和使用该终端提供多媒体服务的方法
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摘要
The present invention separates inputted triple play IP data into Internet and TV data and voice (VoIP) data, encodes the Internet and TV data permitting a long delay time according to the existing DVB-S2 standard, and encodes the voice data permitting only a short delay time according to a DVB-RCS+M standard based 4K mode. Each encoded data is subjected to the orthogonal modulation and the orthogonally modulated voice data is subjected to a direct sequence spectrum spread according to a spreading factor. The spread spectrum signal is multiplexed in a SCPC frequency division multiple access (FDMA) scheme so as to overlap with frequencies allocated to each user.
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