Patent ID: 8391334
Filing Date: 2013-03-05
Classification: H04B

Abstract:
1. A method of improving the reliability of a hub-spoke communications system, comprising: obtaining a communications system comprising a hub terminal and a plurality of spoke terminals, wherein the hub terminal comprises a first antenna with a first polarization and a second antenna with a second polarization, wherein the first polarization is substantially orthogonal to the second polarization and the first antenna and second antenna are located at different positions on the hub terminal; transmitting downlink data using a first direct sequence spread spectrum signal from the first antenna of the hub terminal to ones of the plurality of spoke terminals; determining blockage time periods when physical blockage by the hub terminal is predicted to interrupt communications between the first antenna and each of blocked ones of the plurality of spoke terminals; and transmitting the downlink data using a second direct sequence spread spectrum signal from the second antenna of the hub terminal to each of the blocked ones of the plurality of spoke terminals during the blockage time periods, wherein the first direct sequence spread spectrum signal and the second direct sequence spread spectrum signal each comprise direct sequence spreading using a same pseudonoise spreading code, wherein the pseudonoise spreading code is offset in time for the first direct sequence spread spectrum signal relative to the second direct sequence spread spectrum signal to produce at least one chip interval of difference of the pseudonoise spreading code of the first direct sequence spread spectrum signal relative to the second direct sequence spread spectrum signal at an intended receiver, wherein the determining blockage time periods comprises: