Beamforming scheme for phased-array antennas
First Claim
1. A method for beamforming in a communication system, the method comprising:
- receiving, at a first communication device, a plurality of received signals corresponding to at least one training signal having been transmitted by a second communication device a plurality of times via a plurality of antennas by the second communication device applying a respective antenna weight vector from a plurality of different antenna weight vectors each time the at least one training signal is transmitted;
receiving, at the first communication device, (i) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, or (ii) indicators of the antenna weight vectors that were applied by the second communication device when transmitting the at least one training signal the plurality of times;
generating, at the first communication device, a transmitter antenna weight vector based on a mathematical combination of at least i) the plurality of received signals, ii) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, and iii) the at least one training signal; and
transmitting, with the first communication device, the transmitter antenna weight vector to the second communication device.
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Accused Products
Abstract
A plurality of received signals are received at a first communication device, the plurality of received signals corresponding to at least one training signal having been transmitted by a second communication device a plurality of times via a plurality of antennas by the second communication device applying a respective antenna weight vector from a plurality of different antenna weight vectors each time the at least one training signal is transmitted. The first communication device generates a transmitter antenna weight vector based on a mathematical combination of at least i) the plurality of received signals, ii) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, and iii) the at least one training signal. The first communication device transmits the transmitter antenna weight vector to the second communication device.
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Citations
24 Claims
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1. A method for beamforming in a communication system, the method comprising:
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receiving, at a first communication device, a plurality of received signals corresponding to at least one training signal having been transmitted by a second communication device a plurality of times via a plurality of antennas by the second communication device applying a respective antenna weight vector from a plurality of different antenna weight vectors each time the at least one training signal is transmitted; receiving, at the first communication device, (i) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, or (ii) indicators of the antenna weight vectors that were applied by the second communication device when transmitting the at least one training signal the plurality of times; generating, at the first communication device, a transmitter antenna weight vector based on a mathematical combination of at least i) the plurality of received signals, ii) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, and iii) the at least one training signal; and transmitting, with the first communication device, the transmitter antenna weight vector to the second communication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for use in a system that includes a first communication device and a second communication device, wherein the second communication device transmits at least one training signal a plurality of times via a plurality of antennas of the second communication device and applies a respective antenna weight vector from a plurality of different antenna weight vectors each time the at least one training signal is transmitted, and wherein the at least the one training signal transmitted the plurality of times corresponds to a plurality of received signals received by the first communication device, and wherein the first communication device receives (i) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times have been received by the first communication device, or (ii) indicators of the antenna weight vectors that were applied by the second communication device when transmitting the at least one training signal the plurality of times, the apparatus comprising:
one or more integrated circuit devices configured to; generate a transmitter antenna weight vector based on a mathematical combination of at least i) the plurality of received signals, ii) the antenna weight vectors applied by a second communication device when transmitting the at least one training signal a plurality of times, and iii) at least one training signal, and cause the first communication device to transmit the transmitter antenna weight vector to the second communication device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A tangible, non-transitory computer readable medium or media storing machine readable instructions that, when executed by one or more processors of a first communication device, cause the one or more processors to:
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receive a plurality of received signals corresponding to at least one training signal having been transmitted by a second communication device a plurality of times via a plurality of antennas by the second communication device applying a respective antenna weight vector from a plurality of different antenna weight vectors each time the at least one training signal is transmitted; receive (i) the antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, or (ii) indicators of the antenna weight vectors that were applied by the second communication device when transmitting the at least one training signal the plurality of times; generate a transmitter antenna weight vector based on a mathematical combination of at least i) the plurality of received signals, ii) antenna weight vectors applied by the second communication device when transmitting the at least one training signal the plurality of times, and iii) the at least one training signal; and cause the first communication device to transmit the transmitter antenna weight vector to the second communication device. - View Dependent Claims (23, 24)
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Specification