公开(公告)号：US20130337740A1

公开(公告)日：2013-12-19

申请号：US13917794

申请日：2013-06-14

申请人： MaxLinear, Inc.

发明人： Raja Pullela ,  Glenn Chang ,  Sridhar Ramesh

IPC分类号： H04B7/185

CPC分类号： H04B7/18513 ,  H04L7/0054 ,  H04L7/0331

摘要： A signal processing circuit, which is within a satellite reception assembly, may be operable to analyze actual frequency information corresponding to a plurality of downconverted signals. Each of the downconverted signals may be downconverted using one or more corresponding local oscillators (LOs). Based on the analyzing, one or more of the following may be determined: one or more frequency offsets associated with the one or more corresponding LOs and one or more actual guard bands. The signal processing circuit may generate information on the determined frequency offsets and the determined actual guard bands. The signal processing circuit may perform, based on the generated information, one or both of a band stacking operation and a channel stacking operation so as to prevent channels/bands being stacked on each other or being overlapped. The signal processing circuit may perform, based on the generated information, frequency corrections for channel tuning in a gateway.

摘要翻译： 在卫星接收组件内的信号处理电路可以用于分析对应于多个下变频信号的实际频率信息。 每个下变频信号可以使用一个或多个相应的本地振荡器（LO）进行下变频。 基于分析，可以确定以下中的一个或多个：与一个或多个对应的LO和一个或多个实际保护带相关联的一个或多个频率偏移。 信号处理电路可以产生关于确定的频率偏移和所确定的实际保护频带的信息。 信号处理电路可以基于生成的信息执行频带堆叠操作和信道堆叠操作中的一个或两个，以防止信道/频带彼此堆叠或重叠。 信号处理电路可以基于生成的信息执行用于网关中的信道调谐的频率校正。