公开(公告)号：US09042809B2

公开(公告)日：2015-05-26

申请号：US13846983

申请日：2013-03-19

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Glenn A. Walker ,  Eric A. Dibiaso

IPC: H04H20/74 ,  H04B7/185 ,  H04H40/90

CPC classification number: H04H20/74 ,  H04B7/18515 ,  H04B7/18523 ,  H04H40/90

Abstract: A satellite communication system using hierarchical modulation to transmit a plurality of modulated signals to sub-regions within a region. Each modulated signal includes high priority content and low priority content. The system includes a satellite equipped with a plurality of satellite transmitters coupled to a plurality of antenna elements, e.g. a phased array of antenna elements. The antenna elements are utilized selectively to direct a modulated signal from a satellite transmitter to a distinct sub-region. The satellite transmitters and antenna also cooperate to broadcast the high-priority content to the region such that a ground receiver traveling from a first sub-region to an adjacent second sub-region adjacent will not experience a loss of high-priority content. First low-priority content of a first modulated signal directed to the first sub-region is independent of second low-priority content of a second modulated signal directed to the second sub-region.

Abstract translation: 一种使用分层调制以将多个调制信号发送到区域内的子区域的卫星通信系统。 每个调制信号包括高优先级内容和低优先级内容。 该系统包括配备有耦合到多个天线元件的多个卫星发射机的卫星，例如。 天线元件的相控阵列。 天线元件被选择性地用于将调制信号从卫星发射机引导到不同的子区域。 卫星发射机和天线还协同地向该区域广播高优先级内容，使得从第一子区域行进到相邻的相邻第二子区域的接地接收机将不会经历高优先级内容的丢失。 定向到第一子区域的第一调制信号的第一低优先级内容与定向到第二子区域的第二调制信号的第二低优先级内容无关。