Adaptive beam-steering methods to maximize wireless link budget and reduce delay-spread using multiple transmit and receive antennas
First Claim
Patent Images
1. A method comprising:
- performing adaptive beam steering using multiple transmit and receive antennas, including iteratively performing a pair of training sequences, wherein said iteratively performing the pair of training sequences includes estimating a transmitter antenna-array weight vector and a receiver antenna-array weight vector, and wherein said iteratively performing the pair of training sequences includes alternatively changing transmit and receive phase patterns for a plurality of iterations.
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Abstract
A method and apparatus for adaptive beam-steering are disclosed. In one embodiment, the method comprises performing adaptive beam steering using multiple transmit and receive antennas, including iteratively performing a pair of training sequences, wherein the pair of training sequences includes estimating a transmitter antenna-array weight vector and a receiver antenna-array weight vector.
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Citations
52 Claims
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1. A method comprising:
performing adaptive beam steering using multiple transmit and receive antennas, including iteratively performing a pair of training sequences, wherein said iteratively performing the pair of training sequences includes estimating a transmitter antenna-array weight vector and a receiver antenna-array weight vector, and wherein said iteratively performing the pair of training sequences includes alternatively changing transmit and receive phase patterns for a plurality of iterations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An apparatus comprising:
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a transceiver having a first digital baseband processing unit coupled to a first phased array-antenna; and a receiver having a second digital baseband processing unit coupled to a second phased array-antenna, wherein the first and second digital baseband processing units cooperate to perform adaptive beam steering, using multiple transmit and receive antennas, by iteratively performing a pair of trainings, wherein the pair of trainings includes estimating a transmitter antenna-array weight vector and a receiver antenna-array weight vector, and wherein said iteratively performing the pair of training sequences includes alternatively changing transmit and receive phase patterns for a plurality of iterations. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A method comprising:
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performing adaptive beam forming that includes performing a beam search process to identify a beam direction, wherein said performing adaptive beam forming comprises iteratively performing a pair of training sequences that alternatively change transmit and receive phase patterns for a plurality of iterations, and wherein the iteratively performing converges towards an optimal value corresponding to the beam direction to be used for beam forming; and performing a beam tracking process during a data transfer state to track the beam. - View Dependent Claims (50)
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51. A transmitter for use in communication with a receiver, the transmitter comprising:
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a processor; and a phased away beamforming antenna, wherein the processor controls the antenna to perform adaptive beam steering using multiple transmit antennas in conjunction with receive antennas of the receiver by iteratively performing a set of training operations, wherein said iteratively performing the pair of training operations comprises alternatively changing transmit and receive phase patterns for a plurality of iterations, wherein one of the training operations comprises the processor causing the phased away beamforming antenna to transmit a first training sequence while a receive antenna-array weight vector of the receiver is set and a transmitter antenna-array weight vector switches between weight vectors with a set of weight vectors, and further wherein another of the training operations comprises the processor causing the phased away beamforming antenna to transmit a second training sequence while a transmitter antenna-array weight vector is set as part of a process to calculate the receive antenna-array weight vector.
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52. A receiver for use in communication with a transmitter, the receiver comprising:
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a processor; and a phased away beamforming antenna, wherein the processor controls the antenna to perform adaptive beam steering using multiple receive antennas in conjunction with transmit antennas of the transmitter by iteratively performing a set of training operations, wherein said iteratively performing the pair of training operations comprises alternatively changing transmit and receive phase patterns for a plurality of iterations, wherein one of the training operations comprises the processor setting a receive antenna-array weight vector during a process for estimating a transmit antenna-array weight vector by having the transmitter transmit a first training sequence while the receive antenna-array weight vector is set, and further wherein another of the training operations comprises the processor calculate the receive antenna-array weight vector when the transmitter transmits a second training sequence while the transmitter antenna-array weight vector is set.
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Specification