High performance station
AssigneeQUALCOMM Incorporated
InventorsGregory C. Steele, D.J. Richard van Nee
Life of this patent
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Abstract
Systems and methodologies are described for processing information at a device operating in a wireless communication system. Techniques for in-phase and quadrature (I/Q) calibration, interference cancellation, channel estimation, and signal-to-noise ratio (SNR) and rank metric calculation are provided herein. As provided herein, one or more of the described techniques can be used to adjust the performance of a wireless station in the presence of impairments to the wireless station and/or a communication link used by the wireless station.
Claims51
A method for processing data at a wireless station, comprising:
- obtaining samples related to a radio link utilized by a wireless station for communication;
- identifying one or more impairments from the obtained samples;
- computing one or more parameters based at least in part on the obtained samples and the identified impairments, the parameters comprising one or more items selected from a list, the list including an in-phase and quadrature (I/Q) imbalance correction factor, an interference cancellation coefficient, a channel estimate truncation point, a constellation signal-to-noise ratio (SNR) metric, and a multiple-input multiple-output (MIMO) channel rank metric;
- and
- adjusting the wireless station based on the one or more computed parameters.
A wireless communications apparatus, comprising:
- a memory that stores data relating to a radio link utilized for communication by the wireless communications apparatus and one or more samples relating thereto;
- and
- a processor configured to identify adjustments to be performed at the wireless communications apparatus based on the one or more samples;
- to select one or more parameters for the adjustments from a list, the list comprising an I/Q correction coefficient, an interference cancellation factor, a channel estimate cutoff point, and a channel quality indicator;
- and to perform the identified adjustments.
An apparatus that facilitates signal processing in a wireless communication system, comprising:
- means for obtaining data relating to operating characteristics of the apparatus;
- means for identifying one or more adjustments to be performed at the apparatus based on the obtained data;
- means for computing parameters selected from a group to be used in connection with the identified adjustments, the group comprising I/Q correction factors, interference cancellation coefficients, channel estimate cutoff points, constellation SNR metrics, and MIMO rank metrics;
- and
- means for performing the identified adjustments at the station based on the computed parameters.
A computer-readable medium, comprising:
- code for causing a computer to acquire information relating to a radio link used for communication, the information indicating one or more impairments;
- code for causing a computer to determine a set of parameters to be computed based on the impairments, the set of parameters selected from a list, the list comprising I/Q calibration coefficients, interference cancellation weights, channel truncation values, and channel quality indicators;
- and
- code for causing a computer to compute the set of parameters based on the acquired information to enable adjustment for the impairments based on the set of parameters.
An integrated circuit that executes computer-executable instructions, the instructions comprising:
- identifying one or more adjustments to be made at a wireless station;
- selecting one or more adjustment parameters from a list for the adjustments, the list comprising an I/Q correction coefficient, an interference cancellation factor, a channel estimate truncation point, a constellation SNR, and a MIMO rank metric;
- computing the selected adjustment parameters;
- and
- performing the identified adjustments based on the computed adjustment parameters.
Dependencies are inferred from the claim text.