MIMO transmission with rank adaptation for multi-gigabit 60 GHz wireless
First Claim
Patent Images
1. A wireless system comprising:
- a transmitter with a baseband processor responsive to groups of transmitter antenna arrays for communicating over directional beams; and
a receiver with a baseband processor responsive to groups of receiver antenna arrays for communicating with said transmitter over said directional beams, said receiver including both a rank adaptation providing a transmit mode feedback to said transmitter and a blind beamforming providing a transmit beamformer index feedback to said transmitter and receiver groups of antenna arrays;
wherein said blind beamforming comprises generating enhanced perturbation vectors, an iteration to generate new beamformers responsive to said perturbation vectors and a current beam beamformer, and determining a received power for all combination of transmitter and receiver antenna beamformers responsive to said new beamformers.
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Abstract
A wireless system includes a transmitter with a baseband processor responsive to groups of transmitter antenna arrays for communicating over directional beams; and a receiver with a baseband processor responsive to groups of receiver antenna rays for communicating with the transmitter over the directional beams, the receiver including both a rank adaptation providing a transmit mode feedback to the transmitter and a blind beamforming providing a transmit beamformer index feedback to the transmitter and receiver groups of antenna arrays.
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Citations
17 Claims
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1. A wireless system comprising:
- a transmitter with a baseband processor responsive to groups of transmitter antenna arrays for communicating over directional beams; and
a receiver with a baseband processor responsive to groups of receiver antenna arrays for communicating with said transmitter over said directional beams, said receiver including both a rank adaptation providing a transmit mode feedback to said transmitter and a blind beamforming providing a transmit beamformer index feedback to said transmitter and receiver groups of antenna arrays;
wherein said blind beamforming comprises generating enhanced perturbation vectors, an iteration to generate new beamformers responsive to said perturbation vectors and a current beam beamformer, and determining a received power for all combination of transmitter and receiver antenna beamformers responsive to said new beamformers. - View Dependent Claims (2, 3, 4)
- a transmitter with a baseband processor responsive to groups of transmitter antenna arrays for communicating over directional beams; and
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5. A method for wireless communication comprising the steps of:
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communicating over directional beams by a transmitter with a baseband processor responsive to groups of transmitter antenna arrays for; and communicating with said transmitter over said directional beams by a receiver with a baseband processor responsive to groups of receiver antenna arrays, said receiver including both a rank adaptation providing a transmit mode feedback to said transmitter and a blind beamforming providing a transmit beamformer index feedback to said transmitter and receiver groups of antenna arrays; wherein said blind beamforming comprises generating enhanced perturbation vectors, an iteration to generate new beamformers responsive to said perturbation vectors and a current beam beamformer, and determining a received power for all combination of transmitter and receiver antenna beamformers responsive to said new beamformers. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless system comprising:
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a transmitter with a baseband processor responsive to groups of transmitter antenna arrays for communicating over directional beams; and a receiver with a baseband processor responsive to groups of receiver antenna arrays for communicating with said transmitter over said directional beams, said receiver including both a rank adaptation providing a transmit mode feedback to said transmitter and a blind beamforming providing a transmit beamformer index feedback to said transmitter and receiver groups of antenna arrays; wherein said rank adaptation comprises a capacity evaluation responsive to at least one of composite channel gain and capacity prediction obtained at said receiver, said transmission being adaptively chosen from one of a high rank spatial multiplexing and a rank-1 beamforming whichever gives higher throughput; and
where said capacity for said high rank spatial multiplexing and said rank1 beamforming is respectively given by - View Dependent Claims (15, 16, 17)
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Specification