Apparatus and method for adaptive whitening in a multiple antenna system
AssigneeSamsung Electronics Co., Ltd.
InventorsIk-Beom Lee, Sung-Kwon Jo
Life of this patent
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Abstract
An apparatus and method for controlling a whitening function of a whitening Maximum Ratio Combining (MRC) in a receive end of a multiple antenna system are provided. The method includes identifying if there is interference from at least one neighbor cell, if there is interference, generating a weight of the whitening MRC using a pre-whitening inverse matrix, and, if there is no interference, generating a weight of the whitening MRC using a unit matrix, thus being capable of improving a reception performance of the receive end.
Claims10
A method for controlling a whitening function of a whitening Maximum Ratio Combining (MRC) in a receive end of a multiple antenna system, the method comprising the steps of:
- identifying if there is interference from at least one neighbor cell, according to a comparison of a measured interference power of a received signal with a threshold interference power;
- if there is interference, generating a weight of the whitening MRC using a pre-whitening inverse matrix;
- and
- if there is no interference, generating a weight of the whitening MRC using a unit matrix.
An apparatus for controlling a whitening function of a whitening Maximum Ratio Combining (MRC) in a receive end of a multiple antenna system, the apparatus comprising:
- at least one antenna;
- an interference identifier for identifying if there is interference from at least one neighbor cell, according to a comparison of a measured interference power of a signal received through the at least one antenna with a threshold interference power;
- a filter controller for, if there is interference, providing a pre-whitening inverse matrix to a pre-whitening filter and, if there is no interference, providing a unit matrix to a pre-whitening filter;
- and
- the pre-whitening filter for generating a weight of the whitening MRC using the pre-whitening inverse matrix or unit matrix provided from the filter controller.
A method for controlling a whitening function of a whitening Maximum Ratio Combining (MRC) in a receive end of a multiple antenna system, the method comprising the steps of:
- identifying whether there is interference from at least one neighbor cell, according to a comparison of a calculated Carrier to Interference plus Noise Ratio (CINR) of a received signal with a threshold CINR;
- generating, if there is interference, a weight of the whitening MRC using a pre-whitening inverse matrix;
- and
- generating, if there is no interference, a weight of the whitening MRC using a unit matrix.
An apparatus for controlling a whitening function of a whitening Maximum Ratio Combining (MRC) in a receive end of a multiple antenna system, the apparatus comprising:
- at least one antenna;
- an interference identifier for identifying whether there is interference from at least one neighbor cell, according to a comparison of a calculated Carrier to Interference plus Noise Ratio (CINR) of a received signal with a threshold CINR;
- a filter controller for providing, if there is interference, a pre-whitening inverse matrix to a pre-whitening filter, and providing, if there is no interference, a unit matrix to a pre-whitening filter;
- and
- the pre-whitening filter for generating a weight of the whitening MRC using the pre-whitening inverse matrix or unit matrix provided from the filter controller.
Dependencies are inferred from the claim text.