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3. 发明专利

DE194920T1 未知
公开(公告)号：DE194920T1
公开(公告)日：1986-12-18
申请号：DE86400431
申请日：1986-02-28
申请人： AGENCE SPATIALE EUROPEENNE, PARIS, FR
发明人： ROGARD, ROGER, LISSE, NL
IPC分类号： H04B7/185 , H04L1/00 , H04L1/08 , H04L1/12 , H04L1/18
摘要： The invention relates to data transmission, especially between a satellite and land-mobile terminals, which is self-adaptive and hybrid, i.e. a system which encodes data in sets of blocks including redundant symbols and redundant blocks, and provides automatic retransmission of lost data blocks and in parallel, correction of detected errors within received blocks. In the embodiment described, the data is encoded in a Reed-Solomon code in a two-dimensional mode. Each set of data is transmitted automatically and continuously; the receiver registers the data received and corrects detected errors in the relevant block up to a threshold number; if the number of detected errors in the block exceeds the threshold, the block is erased. When sufficient data has been received to decode the complete set of blocks, the receiver transmits a reception acknowledgement signal repeatedly. When the transmitter receives the reception acknowledgement signal, it interrupts transmission of the current set and starts transmitting the next set, on reception of which the receiver halts transmission of the reception acknowledgement signal.

5. 发明专利

DE419319T1 未知
公开(公告)号：DE419319T1
公开(公告)日：1991-09-05
申请号：DE90402490
申请日：1990-09-11
申请人： AGENCE SPATIALE EUROPEENNE, PARIS, FR
发明人： SCHOEYER, HERMAN FEDDE REIN, ZOETERMEER, NL , BORSO, GUIDO, COLLEFERRO, IT , GIBILISCO, SALVATORE, ROME, IT
IPC分类号： F02K9/32 , F02K9/95 , F42C19/08

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