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1.发明授权公开(公告)号：US10819547B2
公开(公告)日：2020-10-27
申请号：US16623288
申请日：2018-03-19
发明人： Ren Wei , Qiang Gu , Hongbing Li , Bairu Chen , Anhui Zeng
IPC分类号： H04L27/04 , H04L27/12 , H04L27/20 , H04L27/26 , H03M13/27 , H03M13/29 , H04B3/54 , H04L27/34
摘要： Disclosed is a method for spreading data symbol frequency domain information in power line carrier communication, wherein when generating a data symbol in power line carrier communication, multiple times of frequency domain information diversity copy is used in place of the conventional ROBO copy, such that the diversity copy is independent of channel time-varying property, but only dependent on channel characteristics; as such, diversity copy is implemented within the same symbol, which facilitates simplifying the processing circuit of frequency domain and meanwhile enhances communication reliability.
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公开(公告)号：US10992345B2
公开(公告)日：2021-04-27
申请号：US16623271
申请日：2018-03-19
发明人： Songsong Sun , Ren Wei , Qiang Gu , Hongbing Li , Bairu Chen , Anhui Zeng
摘要： Disclosed is a method for low voltage broadband power line carrier communication; when transmitting a physical layer protocol frame, short preambles are first transmitted to undergo automatic gain control, channel estimation, coarse-grained frequency offset compensation, and symbol synchronization; and then long preambles are transmitted to undergo automatic gain control, channel estimation, fine-grained frequency offset compensation, and symbol synchronization. Compared with the scheme of only transmitting long preambles, the present disclosure combines transmissions of short preambles and long preambles, which thus may quickly and accurately implement frequency offset compensation, automatic gain control, symbol synchronization, and channel estimation without sacrifice of precision, thereby achieving quick convergence, reducing resource overheads and time overheads, and enhancing system performance.
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