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1. 发明授权

US06263466B1 System and method of separately coding the header and payload of a data packet for use in satellite data communication 失效
标题翻译：单独编码用于卫星数据通信的数据分组的报头和有效载荷的系统和方法
公开(公告)号：US06263466B1
公开(公告)日：2001-07-17
申请号：US09035645
申请日：1998-03-05
申请人： Sami M. Hinedi , Karl R. Griep , Samson Million
发明人： Sami M. Hinedi , Karl R. Griep , Samson Million
IPC分类号： H03M1300
CPC分类号： H04L1/0053 , H03M13/2903 , H03M13/2933 , H03M13/2939 , H03M13/47 , H03M13/6513 , H04L1/0072 , H04L2001/0097
摘要： A data communication system for a constellation of satellites (13a, 13b, . . . ) that employ Earth-fixed cellular beam management technology is disclosed. The data to be communicated is formed into data packets by a transmitting ground terminal (60). Each data packet includes a header (41) with control information and a payload (43) of data to be communicated. The information contained in the header is used to route the data packets through the satellite constellation to the appropriate intended satellite or to a downlink satellite (104). The header and payload databits are outer forward error correction (FEC) encoded (64, 70), optionally interleaved separately (66, 72), and inner error correction encoded by inner FEC encoders (68, 74). After receipt by an uplink satellite (62), processing of the header is accomplished to recover the header of the original signal. That information may then be used to identify and separate the payload into payload intended for the receiving satellite and payload not intended for the receiving satellite. If receiving satellite payload codewords are identified, the corresponding data is processed and used by the satellite. In one embodiment, a hard decision (102) is applied to the payload data packets that are not intended for use by the receiving satellite. In another embodiment, a hard decision is applied to all payload data. The information contained in the header is then used to route the data packets through the satellite constellation to the appropriate intended satellite or to a downlink satellite (104).
摘要翻译：公开了一种使用地球固定蜂窝波束管理技术的卫星星座数据通信系统（13a，13b，...）。要发送的数据由发送接地终端（60）形成数据包。每个数据分组包括具有要传送的数据的控制信息和有效载荷（43）的报头（41）。标题中包含的信息用于将数据包通过卫星星座路由到适当的预定卫星或下行链路卫星（104）。报头和有效载荷数据位是外部前向纠错（FEC）编码（64,70），可选地交替地分别（66,72）和由内部FEC编码器（68,74）编码的内部纠错。在由上行链路卫星（62）接收之后，完成报头的处理以恢复原始信号的报头。然后可以使用该信息来识别并将有效载荷分离成用于接收卫星和不用于接收卫星的有效载荷。如果接收到卫星有效载荷码字，则相应的数据被卫星处理和使用。在一个实施例中，硬判决（102）被应用于不意图由接收卫星使用的有效载荷数据分组。在另一个实施例中，硬判决被应用于所有有效载荷数据。包含在报头中的信息然后用于将数据分组通过卫星星座路由到适当的预定卫星或下行链路卫星（104）。

2. 发明授权

US06202189B1 Punctured serial concatenated convolutional coding system and method for low-earth-orbit satellite data communication 有权
标题翻译：用于低地球轨道卫星数据通信的穿孔串行卷积编码系统和方法
公开(公告)号：US06202189B1
公开(公告)日：2001-03-13
申请号：US09215790
申请日：1998-12-17
申请人： Sami M. Hinedi , Karl R. Griep , Samson Million
发明人： Sami M. Hinedi , Karl R. Griep , Samson Million
IPC分类号： G06F1110
CPC分类号： H04L1/005 , H03M13/27 , H03M13/29 , H03M13/35 , H04B7/18532 , H04L1/0065 , H04L1/0068 , H04L1/0071
摘要： A serial concatenated convolutional coding system for a constellation of low-Earth-orbit (LEO) satellites for transmitting input data bits of information is disclosed. The input data bits are systematically outer convolutional encoded (30), producing outer encoded data bits and outer encoded parity bits. Some of the bits of the outer encoded parity bits are remove by a puncturer (32), and the remaining outer encoded parity bits and the outer encoded data bits are bit interleaved (34). The bit interleaved, outer encoded data and remaining parity bits are systematically inner convolutional encoded (36) producing concatenated coded, bit interleaved inner data bits and concatenated coded, bit interleaved inner parity bits. Some of the bits of the concatenated coded, bit interleaved inner parity bits are removed by a puncturer (38), and the remaining concatenated coded, bit interleaved inner parity bits and the concatenated coded, bit interleaved inner data bits are combined (40). Upon receipt by a serial concatenated convolutional decoding system (43), the serially concatenated convolutional coded data and parity bits are iteratively decoded to recover the data bits of information of the original signal. During decoding erasures are inserted (46, 52) for the parity bits removed by puncturing. Decoding is accomplished by soft input, soft output (SISO) modules (48, 54).
摘要翻译：公开了一种用于传输信息的输入数据位的用于低地球轨道（LEO）卫星星座的串行级联卷积编码系统。输入数据位系统地进行外部卷积编码（30），产生外部编码数据位和外部编码奇偶校验位。外部编码奇偶校验位的一些位由穿孔器（32）去除，并且剩余的外部编码奇偶校验位和外部编码数据位被比特交织（34）。比特交织，外部编码数据和剩余的奇偶校验位系统地进行内部卷积编码（36），产生级联编码的，位交织的内部数据位和级联的编码的，位交织的内部奇偶校验位。级联编码的，位交织的内部奇偶校验位的一些比特由穿孔器（38）去除，并且剩余的级联编码的比特交织的内部奇偶校验位和级联的经编码的位交织的内部数据比特被组合（40）。在通过串行级联卷积解码系统（43）接收到时，串行级联卷积编码数据和奇偶校验位被迭代地解码，以恢复原始信号的信息的数据位。在解码消除期间插入（46,52）以通过删截去除奇偶校验位。解码通过软输入，软输出（SISO）模块（48,54）完成。

3. 发明授权

US6157642A Coding system and method for low-earth orbit satellite data communication 失效
公开(公告)号：US6157642A
公开(公告)日：2000-12-05
申请号：US949412
申请日：1997-10-14
申请人： Mark A. Sturza , Farzad Ghazvinian , Sami M. Hinedi , Karl R. Griep , Samson Million
发明人： Mark A. Sturza , Farzad Ghazvinian , Sami M. Hinedi , Karl R. Griep , Samson Million
IPC分类号： H04B7/185 , H04L1/00 , H04B7/216 , H04L12/28
CPC分类号： H04L1/0065 , H04B7/18521 , H04L1/0053 , H04B7/1858 , H04L1/0068 , H04L1/0071
摘要： A data communication system for a constellation of low-Earth orbit (LEO) satellites (13a, 13b, . . . ) that employ Earth-fixed cellular beam management technology is disclosed. The data to be communicated is formed into data packets by a transmitting ground terminal (41). Each data packet includes a header (41) and a payload (43). The header (41) contains address and other control information and the payload (43) contains the data to be communicated. The header and payload databits are separated (71) and outer forward error correction (FEC) encoded (72, 73) with an outer error correction code. The symbols of the outer encoded header and payload codewords are interleaved, first separately (74, 75) and then together (76). The outer encoded, interleaved header and payload codewords are inner encoded by an inner FEC encoder (77). Upon receipt by an uplink satellite (63), the inner error correction code is removed (87) and the resulting codeword symbols are de-interleaved (88, 89, 90). The outer error correction code of the header portion is then removed (91) to recover the header of the original signal. The information contained in the header is used to route the data packets through the satellite constellation to the appropriate downlink satellite (93). The downlink satellite re-outer encodes the header (95) and the symbols of the re-outer encoded header and the still outer encoded payload codewords are separately interleaved (96, 97) and then interleaved together (98). The interleaved re-outer encoded header and outer encoded payload databits are re-inner encoded (99). Upon receipt by a receiving ground terminal (107), the data packets are inner decoded (111) to remove the inner error correction code and the symbols of the header and payload codewords are de-interleaved (112, 113, 114). Then the header and payload codewords are outer decoded (115, 116) to remove the outer error correction codes and recover the header and payload. Preferably a payload filter (117) is included to eliminate the need to outer decode payload codewords not destined for the receiving ground terminal (107).

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