Method of determining transmit power for transmit eigenbeams in a multiple-input multiple-output communications system
First Claim
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1. A method, comprising:
- estimating a receive power associated with each eigenbeam in a set of eigenbeams for at least a portion of a multiple transmit antenna system based on the total available transmit power for the multiple transmit antenna system and a noise associated with each eigenbeam in the set of eigenbeams;
determining a transmit power for each eigenbeam in the set of eigenbeams based on the normalized noise associated with the eigenbeam and the estimated receive power; and
modifying the set of eigenbeams to remove at least one eigenbeam when the determined transmit power for a desired number of eigenbeams is less than a power threshold.
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Abstract
In the method according to the present invention, a transmit power for each eigenbeam in a set of eigenbeams forming at least a portion of a multiple transmit antenna system is determined based on noise associated with each eigenbeam in the set of eigenbeams. The set of eigenbeams is for transmitting a number of parallel complex Gaussian channels.
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11 Claims
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1. A method, comprising:
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estimating a receive power associated with each eigenbeam in a set of eigenbeams for at least a portion of a multiple transmit antenna system based on the total available transmit power for the multiple transmit antenna system and a noise associated with each eigenbeam in the set of eigenbeams; determining a transmit power for each eigenbeam in the set of eigenbeams based on the normalized noise associated with the eigenbeam and the estimated receive power; and modifying the set of eigenbeams to remove at least one eigenbeam when the determined transmit power for a desired number of eigenbeams is less than a power threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification