Channel smoothing with TX beamforming
AssigneeAvago Technologies International Sales Pte. Limited
InventorsRoy Oren, Daniel Stopler, Shimon Benjo
Life of this patent
Estimating the term…
Abstract
A method for channel smoothing with transmit beamforming includes transmitting, by a first device, a non-data-packet (NDP) frame to a second device. The method also includes receiving, by the second device, the NDP frame and transmitting a compressed report to the first device. The method further includes receiving, by the first device, the compressed report and deriving a first beamforming matrix from the compressed report. A second beamforming matrix is generated employing a processing known to the second device, and a data frame is transmitted to the second device using the second beamforming matrix.
Claims20
A method for channel smoothing with transmit beamforming, the method comprising:
- transmitting a non-data-packet (NDP) frame to a device, wherein the NDP frame causes the device to estimate a channel, the estimated channel based on a physical channel and input noise;
- receiving, from the device, a compressed report;
- deriving a first beamforming matrix and the estimated channel from the compressed report;
- generating, based on the first beamforming matrix and the estimated channel, a second beamforming matrix by a process known to the device;
- and
- transmitting, using the second beamforming matrix, a data frame to the device.
A semiconductor substrate, comprising:
- transmitter circuitry;
- receiver circuitry;
- memory circuitry;
- and
- processing circuitry configured to execute code stored on the memory circuitry that causes the processing circuitry to;
- transmit, using the transmitter circuitry, a non-data-packet (NDP) frame to a device, wherein the NDP frame causes the device to estimate a channel, the estimated channel based on a physical channel and input noise;
- receive, using the receiver circuitry, a compressed report from the device;
- derive a first beamforming matrix and the estimated channel from the compressed report;
- generate, based on the first beamforming matrix and the estimated channel, a second beamforming matrix by a process known to the device;
- and
- transmit, using the second beamforming matrix, a data frame to the device.
A multiantenna access point comprising:
- processing circuitry configured to:
- transmit a non-data-packet (NDP) frame to a wireless communication device, wherein the NDP frame causes the wireless communication device to estimate a channel, the estimated channel based on a physical channel and input noise;
- receive, from the wireless communication device, a compressed report;
- derive a beamforming matrix and the estimated channel from the compressed report;
- generate, based on the beamforming matrix and the estimated channel, a V matrix employing a processing that is known to the wireless communication device;
- and
- transmit, using the V matrix, a data frame to the wireless communication device.
Dependencies are inferred from the claim text.