公开(公告)号：EP0854590A3

公开(公告)日：2000-04-19

申请号：EP97117417.2

申请日：1997-10-08

Applicant: COM DEV LTD.

Inventor： Lazaris-Brunner, Ken ,  Beauchamp, Gary ,  Tailor, Bharat

IPC: H04B7/185

CPC classification number: H04B7/18515 ,  Y02D70/446

Abstract: An analog processor for use with digital satellites is disclosed. The analog processor is connected between the receiving circuitry of the satellite and a pool of digital on-board processors, and segments the bandwidth of uplink RF beams into sub-bands that can be processed more readily with standard, low-risk, low-power digital processors. Using the present invention, the risk of employing a particular digital processor technology can be managed and optimized. The present invention also provides for the dynamic allocation and reallocation of the available on-board digital processing bandwidth based on the anticipated traffic pattern and changes in the traffic pattern. In addition, the present invention facilitates the use of standard and non-standard redundancy schemes at minimal hardware expense.

公开(公告)号：EP0760561B1

公开(公告)日：2003-03-26

申请号：EP96113034.1

申请日：1996-08-13

Applicant: COM DEV LTD.

Inventor： Peach, Robert ,  Miller, Nigel ,  Tailor, Bharat ,  Ali, Kamal ,  Beauchamp, Gary ,  Lam, Simon ,  Lazaris-Brunner, Ken

IPC: H04B7/204

CPC classification number: H04B7/2041

公开(公告)号：EP0760561B9

公开(公告)日：2004-03-17

申请号：EP96113034.1

申请日：1996-08-13

Applicant: COM DEV LTD.

Inventor： Peach, Robert ,  Miller, Nigel ,  Tailor, Bharat ,  Ali, Kamal ,  Beauchamp, Gary ,  Lam, Simon ,  Lazaris-Brunner, Ken

IPC: H04B7/204

CPC classification number: H04B7/2041

公开(公告)号：EP0854590A2

公开(公告)日：1998-07-22

申请号：EP97117417.2

申请日：1997-10-08

Applicant: COM DEV LTD.

Inventor： Lazaris-Brunner, Ken ,  Beauchamp, Gary ,  Tailor, Bharat

IPC: H04B7/185

CPC classification number: H04B7/18515 ,  Y02D70/446

Abstract: An analog processor for use with digital satellites is disclosed. The analog processor is connected between the receiving circuitry of the satellite and a pool of digital on-board processors, and segments the bandwidth of uplink RF beams into sub-bands that can be processed more readily with standard, low-risk, low-power digital processors. Using the present invention, the risk of employing a particular digital processor technology can be managed and optimized. The present invention also provides for the dynamic allocation and reallocation of the available on-board digital processing bandwidth based on the anticipated traffic pattern and changes in the traffic pattern. In addition, the present invention facilitates the use of standard and non-standard redundancy schemes at minimal hardware expense.

Abstract translation: 公开了一种用于数字卫星的模拟处理器。 模拟处理器连接在卫星的接收电路和数字板载处理器之间，并将上行链路RF波束的带宽分段为可以用标准的低风险低功耗更容易处理的子带 数位处理器 使用本发明，可以管理和优化采用特定数字处理器技术的风险。 本发明还提供了基于预期业务模式和业务模式变化的可用板上数字处理带宽的动态分配和重新分配。 此外，本发明有助于以最小的硬件成本使用标准和非标准的冗余方案。

公开(公告)号：EP0854590B1

公开(公告)日：2006-09-27

申请号：EP97117417.2

申请日：1997-10-08

Applicant: COM DEV LTD.

Inventor： Lazaris-Brunner, Ken ,  Beauchamp, Gary ,  Tailor, Bharat

IPC: H04B7/185 ,  H04B7/204

CPC classification number: H04B7/18515 ,  Y02D70/446

Abstract: An analog processor for use with digital satellites is disclosed. The analog processor is connected between the receiving circuitry of the satellite and a pool of digital on-board processors, and segments the bandwidth of uplink RF beams into sub-bands that can be processed more readily with standard, low-risk, low-power digital processors. Using the present invention, the risk of employing a particular digital processor technology can be managed and optimized. The present invention also provides for the dynamic allocation and reallocation of the available on-board digital processing bandwidth based on the anticipated traffic pattern and changes in the traffic pattern. In addition, the present invention facilitates the use of standard and non-standard redundancy schemes at minimal hardware expense.

公开(公告)号：EP0780998A2

公开(公告)日：1997-06-25

申请号：EP96119806.6

申请日：1996-12-10

Applicant: COM DEV LTD.

Inventor： Peach, Robert ,  Beauchamp, Gary ,  O'Donovan, Val

IPC: H04B7/185

CPC classification number: H04B7/18521

Abstract: This invention concerns improvements in the efficiency and flexibility of multi-beam communications satellites connected by intersatellite links. It will increase the number of customers serviced and hence the revenue generated when intersatellite links are employed by multibeam satellites which use the currently available technology in a bent-pipe microwave architecture.
Existing multibeam systems use the bent-pipe microwave architecture. Information from one geographic region uplinked to one satellite can be transferred to a second satellite via intersatellite link and then downlinked into a second geographic region. These multibeam systems waste available bandwidth capacity by tying up complete intersatellite link transponders even if the channels are not full because information switching is conducted at a full transponder level. Further, if information is broadcast, as in news-gathering applications, to several downlink beams, the system ties up, in the receiving satellite, one transponder per downlink beam.
In future systems using on-board digital-processing technology, it is theoretically possible that information can be switched at a much finer bandwidth level. Hence, one intersatellite channel could handle traffic originating from several uplink beams on the first satellite with destinations to several downlink beams on the second satellite which avoids the inefficiency of a partially full transponder. However, customer terminals have to be designed for the modulation and coding architecture specific to that system and cannot be used with any other system.
The present invention solves spectral flexibility and inefficiency problems of existing systems, and is transparent to all modulation and coding architectures while still allowing for communication with all terminals currently in use with communications satellites. The approach used is to combine switching at a subchannel level (solving flexibility and inefficiency problems) while using technologies compatible with bent-pipe architecture (solving terminal-compatibility problems) with an intersatellite link. Technologies used include Surface Acoustic Wave (SAW) filtering and solid-state switching.
This invention will provide spectral efficiency and flexibility approaching but not equalling the theoretical efficiency and flexibility of future systems employing digital signal processing. It will, however, be significantly more efficient than future digital satellite systems in terms of the two most expensive satellite resources, power and mass.

Abstract translation: 本发明涉及通过卫星间链路连接的多波束通信卫星的效率和灵活性的改进。 这将增加所服务客户的数量，从而增加使用当前可用的技术在弯管微波架构中的多波束卫星采用卫星间链路时所产生的收入。 现有的多波束系统使用弯管微波架构。 从上行到一个卫星的一个地理区域的信息可以经由卫星间链路传送到第二卫星，然后下行链路进入第二地理区域。 即使信道不满，因为在完整的转发器级别进行信息交换，这些多波束系统通过捆绑完整的卫星间链路转发器来浪费可用的带宽容量。 此外，如在消息收集应用中广播信息到几个下行链路波束，则系统在接收卫星中绑定每个下行链路波束的一个应答器。 在将来使用板载数字处理技术的系统中，理论上可以在更精细的带宽级别切换信息。 因此，一个卫星间信道可以处理来自第一卫星上的多个上行链路波束的业务，其目的地到达第二卫星上的若干下行链路波束，这避免了部分完整的应答器的低效率。 然而，客户终端必须设计用于该系统专用的调制和编码架构，并且不能与任何其他系统一起使用。 本发明解决了现有系统的频谱灵活性和低效率问题，并且对所有调制和编码架构是透明的，同时仍允许与当前与通信卫星一起使用的所有终端的通信。 所采用的方法是在通过卫星间链路使用与弯管架构兼容的技术（解决终端兼容性问题）的同时，在子通道级别（解决灵活性和无效率问题）中组合切换。 所使用的技术包括表面声波（SAW）滤波和固态切换。 本发明将提供频谱效率和灵活性接近但不等于使用数字信号处理的未来系统的理论效率和灵活性。 然而，在两个最昂贵的卫星资源，电力和质量方面，它将比未来的数字卫星系统显着更有效率。

公开(公告)号：EP0780998B1

公开(公告)日：2003-04-09

申请号：EP96119806.6

申请日：1996-12-10

Applicant: COM DEV LTD.

Inventor： Peach, Robert ,  Beauchamp, Gary ,  O'Donovan, Val

IPC: H04B7/185

CPC classification number: H04B7/18521

公开(公告)号：EP0905930A3

公开(公告)日：2003-01-15

申请号：EP98117378.4

申请日：1998-09-14

Applicant: COM DEV LTD.

Inventor： Lazaris-Brunner, Ken ,  Beauchamp, Gary ,  Tailor, Bharat

IPC: H04H1/00 ,  H04B7/185 ,  H04B7/204

CPC classification number: H04H40/90

Abstract: A multi-beam DBS satellite system capable of providing spectrally efficient regional programming is disclosed. The inventive system includes at least one DBS satellite having a repeater connected between multiple uplink antennas and multiple downlink antennas. The repeater has a switching processor and a formatting processor. The switching processor includes circuitry for filtering individual channels of information from the uplink frequency division multiplexed (FDM) beams received at the uplink antennas, and also includes circuitry for switching the channels of information to form a set of switched channels. These switched channels are then combined and routed to the formatting processor. The formatting processor converts the switched FDM information into a combined digital TDM signal that preferably corresponds to the DVB standard. Using this repeater, the present invention is capable of linking different geographical sources of programming information to multiple downlink beams in a flexible and spectrally efficient manner for direct transmission to home receivers.

公开(公告)号：EP0905930A2

公开(公告)日：1999-03-31

申请号：EP98117378.4

申请日：1998-09-14

Applicant: COM DEV LTD.

Inventor： Lazaris-Brunner, Ken ,  Beauchamp, Gary ,  Tailor, Bharat

IPC: H04H1/00 ,  H04B7/185

CPC classification number: H04H40/90

Abstract: A multi-beam DBS satellite system capable of providing spectrally efficient regional programming is disclosed. The inventive system includes at least one DBS satellite having a repeater connected between multiple uplink antennas and multiple downlink antennas. The repeater has a switching processor and a formatting processor. The switching processor includes circuitry for filtering individual channels of information from the uplink frequency division multiplexed (FDM) beams received at the uplink antennas, and also includes circuitry for switching the channels of information to form a set of switched channels. These switched channels are then combined and routed to the formatting processor. The formatting processor converts the switched FDM information into a combined digital TDM signal that preferably corresponds to the DVB standard. Using this repeater, the present invention is capable of linking different geographical sources of programming information to multiple downlink beams in a flexible and spectrally efficient manner for direct transmission to home receivers.

Abstract translation: 公开了能够提供光谱高效区域编程的多波束DBS卫星系统。 本发明的系统包括至少一个具有连接在多个上行链路天线和多个下行链路天线之间的中继器的DBS卫星。 中继器具有切换处理器和格式化处理器。 切换处理器包括用于从在上行链路天线处接收的上行链路频分多路复用（FDM）波束中的各个信道信号进行滤波的电路，并且还包括用于切换信息信道以形成一组切换信道的电路。 然后将这些交换的信道组合并路由到格式化处理器。 格式化处理器将切换的FDM信息转换成优选对应于DVB标准的组合数字TDM信号。 使用该中继器，本发明能够以灵活和频谱有效的方式将不同地理编程信息源连接到多个下行链路波束，以便直接发送到家庭接收机。

公开(公告)号：EP0760561A2

公开(公告)日：1997-03-05

申请号：EP96113034.1

申请日：1996-08-13

Applicant: COM DEV LTD.

Inventor： Peach, Robert ,  Miller, Nigel ,  Tailor, Bharat ,  Ali, Kamal ,  Beauchamp, Gary ,  Lam, Simon ,  Lazaris-Brunner, Ken

IPC: H04B7/204

CPC classification number: H04B7/2041

Abstract: A repeater for a multibeam communications satellite combines the features of coaxial channel interbeam switching and subchannelization of some of the channels. In one embodiment described, the input radio-frequency signals from the input beams are fed through the input multiplexers to form channels. Some, but not all, channels are subsequently subchannelized for interbeam switching. In another embodiment of the invention, a portion of the incoming radio frequency signals bypasses the input demultiplexer and is filtered for noise-limiting reasons, converted down to an intermediate frequency and then subchannelized using SAW filters. The specification also teaches that digital techniques can be used to obtain the same results. Especially in the case of satellites with a large number of beams and a large number of channels, it is not necessary to have full interbeam switching of all the subchannels derived from one channel: instead, the specification proposes the use of parallel configurations of smaller, less complex switching networks.

Abstract translation: 一种用于多波束卫星通信转发器结合了的一些通道同轴信道的波束间切换和子信道的特性。 在一个实施例中所描述的，从输入光束的输入射频信号通过多路转换器输入进料，以形成通道。 一些，但不是全部，信道随后用于subchannelized波束间切换。 在本发明的另一个实施例，输入的射频信号的一部分绕过所述输入多路分解，并过滤噪声限制性原因，转换至在中频，然后使用SAW滤波器subchannelized。 因此，规范教技术做数字可以用来获得相同的结果。 尤其是在具有大数量的光束和大量的信道的卫星的情况下，这是没有必要为具有从一个信道导出的所有子信道的全梁间切换：代替，本说明书提出了使用更小的平行构型， 较不复杂的交换网络。