US 7,889,131 B2 · Beamformed space time code communication with testing spatial signature generation

Abstract

An apparatus, logic and method are provided to improve beamformed space time code (STC) wireless communication. A first device comprising a plurality of antennas receives signals at the plurality of antennas transmitted from a first antenna of a second device. A testing spatial signature for a second antenna of the second device is computed based on the signals received at the plurality of antennas of the first device from the first antenna of the second device. Using the testing spatial signature and the signals received at the plurality of antennas of the first device from the first antenna of the second device, beamforming weights are computed to be applied to a space time code signal to be transmitted from the first device to the second device via the plurality of antennas of the first device.

Claims30

Dependent claims

A method comprising:

at a first device comprising a plurality of antennas, receiving signals transmitted from a first antenna of a second device;
generating a testing spatial signature covariance matrix for a second antenna of the second device based on the signals received at the plurality of antennas of the first device from the first antenna of the second device;
and
based on the testing spatial signature covariance matrix and the signals received at the plurality of antennas of the first device from the first antenna of the second device, computing beamforming weights to be applied to a space time code signal to be transmitted from the first device to the second device via the plurality of antennas of the first device.

1 more element

An apparatus comprising:

a plurality of antennas;
a transmitter coupled to the plurality of antennas, the transmitter that is configured to apply beamforming weights to a space time code signal to be beamformed and transmitted from the plurality of antennas to a destination device;
and
a controller coupled to the beamforming module that is configured to compute the beamforming weights used by the beamforming module by generating a testing spatial signature covariance matrix for a second antenna of the destination device based on the signals received at the plurality of antennas from a first antenna of the destination device, and to compute the beamforming weights based on the testing spatial signature covariance matrix and the signals received at the plurality of antennas from the first antenna of the destination device.

1 more element

A tangible media encoded with instructions for execution by a processor, and when executed operable to cause the processor to:

at a first device comprising a plurality of antennas, generate a testing spatial signature covariance matrix for a second antenna of a second device based on signals received at the plurality of antennas of the first device from a first antenna of the second device;
and
based on the testing spatial signature covariance matrix and the signals received at the plurality of antennas of the first device from the first antenna of the second device, compute beamforming weights to be applied to a space time code signal to be transmitted from the first device to the second device via the plurality of antennas of the first device.

Dependencies are inferred from the claim text.

Beamformed space time code communication with testing spatial signature generation

Life of this patent

Beamformed space time code communication with testing spatial signature generation

Life of this patent

Abstract

Claims30