公开(公告)号：US07289460B1

公开(公告)日：2007-10-30

申请号：US10462094

申请日：2003-06-12

申请人： John C. Thacker ,  Steven R. Peterson ,  Scott Blanchard ,  Gregory E. Edlund

发明人： John C. Thacker ,  Steven R. Peterson ,  Scott Blanchard ,  Gregory E. Edlund

IPC分类号： H04B7/216

CPC分类号： H04B7/216 ,  H04B7/18543

摘要： Embodiments of the present invention are directed to a satellite communications system between satellites and terminal units that are sufficiently small to be handheld units and that operate within the earth power flux density limit. This is accomplished by using spreading spectrum waveform protocols that make efficient use of the allocated bandwidth. In one embodiment, a satellite communications system comprises at least one satellite, and at least one ground station each corresponding to one of the at least one satellite. Each ground station includes a spread spectrum transmitter and a spread spectrum receiver. Each of a plurality of mobile terminals includes a spread spectrum transmitter and a spread spectrum receiver. The spread spectrum transmitter of the at least one ground station is configured to communicate via the corresponding satellite with the spread spectrum receivers of the mobile terminals, and the spread spectrum receiver of the at least one ground station is configured to communicate via the satellite with the spread spectrum transmitter of the mobile terminals, using spread spectrum signals generated from baseband information signals narrower in bandwidth than the spread spectrum signals.

摘要翻译： 本发明的实施例涉及卫星和终端单元之间的卫星通信系统，该系统足够小以成为手持设备并且在地面功率通量密度极限内运行。 这是通过使用扩展频谱波形协议来实现的，该协议能够有效地利用分配的带宽。 在一个实施例中，卫星通信系统包括至少一个卫星和至少一个地面站，每个地面站对应于至少一个卫星之一。 每个地面站包括扩频发射机和扩频接收机。 多个移动终端中的每一个包括扩频发射机和扩频接收机。 所述至少一个地面站的扩频发射器经配置以经由所述对应卫星与所述移动终端的扩频接收机进行通信，并且所述至少一个地面站的所述扩频接收机经配置以经由所述卫星与 使用从扩展频谱信号带宽窄的基带信息信号生成的扩频信号。