Automatic gain control apparatus and method for compressed mode in MIMO system
First Claim
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1. A method for Automatic Gain Control (AGC) during a compressed mode search in a Multiple Input Multiple Output (MIMO) system, the method comprising:
- simultaneously determining power at a first frequency band using a first receiver connected to a first antenna and determining power at a second frequency band using a second receiver connected to a second antenna, the second receiver being in a compressed mode;
when the second receiver changes from receiving the second frequency band to receiving the first frequency band, correcting the power determined at the first frequency band using the first receiver; and
applying the corrected power determined at the first frequency band using the first receiver to the second receiver,wherein the correcting of the power determined at the first frequency band using the first receiver comprises;
determining an average value of the power determined at the first frequency band using the first receiver of a predefined number of times and the power determined at the second frequency band using the second receiver of a predefined number of times;
comparing the average value with at least one predefined threshold value; and
based on the comparison result, correcting the power determined at the first frequency band using the first receiver.
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Abstract
An automatic gain control apparatus and method for a compressed mode in a MIMO system are provided. The method includes determining power at a first frequency band using a first receiver, simultaneously determining power at a second frequency band using a second receiver in a compressed mode, if the second receiver changes a power determination frequency band into the first frequency band, correcting the power determination value of the first receiver, and applying the corrected power determination value of the first receiver to the second receiver.
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16 Claims
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1. A method for Automatic Gain Control (AGC) during a compressed mode search in a Multiple Input Multiple Output (MIMO) system, the method comprising:
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simultaneously determining power at a first frequency band using a first receiver connected to a first antenna and determining power at a second frequency band using a second receiver connected to a second antenna, the second receiver being in a compressed mode; when the second receiver changes from receiving the second frequency band to receiving the first frequency band, correcting the power determined at the first frequency band using the first receiver; and applying the corrected power determined at the first frequency band using the first receiver to the second receiver, wherein the correcting of the power determined at the first frequency band using the first receiver comprises; determining an average value of the power determined at the first frequency band using the first receiver of a predefined number of times and the power determined at the second frequency band using the second receiver of a predefined number of times; comparing the average value with at least one predefined threshold value; and based on the comparison result, correcting the power determined at the first frequency band using the first receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for Automatic Gain Control (AGC) during a compressed mode search in a Multiple Input Multiple Output (MIMO) system, the apparatus comprising:
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a first receiver, connected to a first antenna, for determining power at a first frequency band; a second receiver, connected to a second antenna, for, in a compressed mode, simultaneously to the first receiver determining power at the first frequency band, determining power at a second frequency band; and a channel comparator for correcting the power determined at the first frequency band using the first receiver when the second receiver changes from receiving the second frequency band to receiving the first frequency band, and for applying the corrected power determined at the first frequency band using the first receiver to the second receiver, wherein the channel comparator; determines an average value of the power determined at the first frequency band using the first receiver of a predefined number of times and the power determined at the second frequency band using the second receiver of a predefined number of times; compares the average value with at least one predefined threshold value; and corrects the power determined at the first frequency band using the first receiver based on the comparison result. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification