Method and apparatus for optimizing antenna precoder selection with coupled antennas
First Claim
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1. A method comprising:
- receiving a power metric corresponding to each precoder of a plurality of precoders;
receiving reference signals;
estimating a transmission channel corresponding to each precoder of the plurality of precoders based on the reference signals;
scaling the estimate of the transmission channel based on the power metric for each precoder of the plurality of precoders;
generating a channel quality metric for each precoder of the plurality of precoders based on the scaled estimate of the transmission channel; and
transmitting an index of a precoder with the largest channel quality metric.
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Abstract
A method and apparatus optimize antenna precoder selection with coupled antennas. A power metric corresponding to each precoder of a plurality of precoders can be received at a receiving device. Reference signals can be received. A transmission channel corresponding to each precoder can be estimated based on the reference signals. The estimate of the transmission channel can be scaled based on the power metric for each precoder. A channel quality metric for each precoder can be generated based on the scaled estimate of the transmission channel. An index of a precoder with the largest channel quality metric can be transmitted.
9 Citations
19 Claims
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1. A method comprising:
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receiving a power metric corresponding to each precoder of a plurality of precoders; receiving reference signals; estimating a transmission channel corresponding to each precoder of the plurality of precoders based on the reference signals; scaling the estimate of the transmission channel based on the power metric for each precoder of the plurality of precoders; generating a channel quality metric for each precoder of the plurality of precoders based on the scaled estimate of the transmission channel; and transmitting an index of a precoder with the largest channel quality metric. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a transceiver to receive a power metric corresponding to each precoder of a plurality of precoders and to receive reference signals; and a controller coupled to the transceiver, the controller to estimate a transmission channel corresponding to each precoder of the plurality of precoders based on the reference signals, scale the estimate of the transmission channel based on the power metric for each precoder of the plurality of precoders, and generate a channel quality metric for each precoder of the plurality of precoders based on the scaled estimate of the transmission channel, wherein the transceiver transmits an index of a precoder with the largest channel quality metric. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method comprising:
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estimating a power of each precoder of a plurality of precoders; generating a power metric corresponding to the estimated power; transmitting the power metric; transmitting reference signals; and receiving an index of a precoder with a largest channel quality metric based on the power metric and the reference signals, wherein the power metric comprises an estimated difference in power of each of the plurality of precoders from a reference precoder power. - View Dependent Claims (16, 17)
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18. An apparatus comprising:
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a controller to estimate a power of each precoder of a plurality of precoders and generate a power metric corresponding to the estimated power; and a transceiver to transmit the power metric, transmit reference signals, and receive an index of a precoder with a largest channel quality metric based on the power metric and the reference signals, wherein the power metric comprises an estimated difference in power of each of the plurality of precoders from a reference precoder power.
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19. A method comprising:
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generating a power metric corresponding to each precoder of a plurality of precoders; transmitting the power metric; transmitting reference signals; and receiving an index of a precoder with a largest channel quality metric based on the power metric and the reference signals, wherein receiving comprises receiving an index of a precoder with a largest channel quality metric of a plurality of precoders, wherein a channel quality metric for each precoder of the plurality of precoders is based on a scaled estimate of a transmission channel based on the power metric, and wherein the estimate of the transmission channel for each precoder of the plurality of precoders is based on the reference signals.
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Specification