System and method for improving polarization matching on a cellular communication forward link
First Claim
1. A method of controlling a plurality of beam patterns radiated by a base station in a wireless communication system, comprising:
- receiving at least one signal from a mobile station at the base station;
determining estimated attributes of said at least one signal received by the base station;
calculating smoothed versions of said estimated attributes according to a predetermined set of criteria;
generating a set of weighted signal parameters according to said smoothed versions to describe a polarization state of said at least one signal; and
applying said weighted signal parameters to modify a signal transmitted by said base station such that said transmitted signal substantially matches said polarization state of said at least one signal.
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Abstract
The present invention provides a method of controlling a plurality of beam patterns radiated by a base station in a wireless communication system. The method includes receiving at least one signal from a mobile station at the base station, determining estimated attributes of the at least one signal received by the base station. Smoothed versions of the estimated attributes are calculated in accordance with a predetermined set of criteria are calculated. A set of weighted signal parameters are generated to describe a polarization state of the at least one signal received from the mobile station. The generated weighed signal parameters are applied to a signal transmitted by the base station such that the transmitted signal substantially matches the polarization state of the at least one signal from the mobile station.
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Citations
10 Claims
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1. A method of controlling a plurality of beam patterns radiated by a base station in a wireless communication system, comprising:
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receiving at least one signal from a mobile station at the base station; determining estimated attributes of said at least one signal received by the base station; calculating smoothed versions of said estimated attributes according to a predetermined set of criteria; generating a set of weighted signal parameters according to said smoothed versions to describe a polarization state of said at least one signal; and applying said weighted signal parameters to modify a signal transmitted by said base station such that said transmitted signal substantially matches said polarization state of said at least one signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus, in a wireless communication system, for controlling a plurality of beam patterns radiated by a base station to match the polarization of beam patterns radiated by at least one mobile station, comprising:
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an attribute estimation unit configured to process at least one signal received by the bas station and to determine estimated attributes of said at least one signal; a data smoothing mechanism coupled to said attribute estimation unit, said data smoothing mechanism configured to calculate smoothed versions of said estimated attributes in accordance with a predetermined set of criteria; and a normalized weight generator to generate weighted signal parameters according to the smoothed versions, the weighted signal parameters being applied to said at least one signal to achieve polarization matching. - View Dependent Claims (9, 10)
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Specification