121 results about "Feedback analysis" patented technology

A system and method for determining eligibility of persons and enrolling those persons in various programs. For example, one embodiment is particularly suited for enrolling credit card members in payment programs. A program is selected, after which enrollment information is entered. The enrollment information is checked and verified, and the enrollment application is checked for eligibility. The enrollment may be either accepted or declined. The possibility of reiterative enrollment in more than one program is provided. A system is provided for tracking which payment programs are the most enticing for later feedback analysis.

The present invention provides an advanced adaptive predistortion linearization technique to dramatically reduce nonlinear distortion in power amplifiers over a very wide instantaneous bandwidth (up to 2 GHz) and over a wide range of amplifier types, input frequencies, signal types, amplitudes, temperature, and other environmental and signal conditions. In an embodiment of the invention, the predistortion linearization circuitry comprises (1) a higher-order polynomial model of an amplifier's gain and phase characteristics—higher than a third-order polynomial model; (2) an adaptive calibration technique; and (3) a heuristic calibration technique. The higher-order polynomial model is generated by introducing, for example, a plurality of multi-tone test signals with varying center frequency and spacing into the power amplifier. From the power amplifier's corresponding output, the nonlinearities are modeled by employing a higher-order curve fit to capture the irregularities in the nonlinear transfer function. Different distortion transfer functions can be implemented for different operating conditions. The adaptive calibration technique is based on a feedback analysis technique, which updates the applicable distortion transfer function by analyzing the error signal between the introduced input signal and the output signal in real-time. The heuristic calibration technique implements different distortion transfer functions based on historical operating conditions and optimal configurations of the power amplifier.

The invention discloses an environment adjusting method. The method includes the steps that a group feedback analysis system generates a first comfort limit based on multiple first data points, wherein the multiple first data points correspond to user feedback of a user group located in the environment adjusted through an environment adjusting system, and the user feedback is used for identifying the first comfort limit on a first limit end; the group feedback analysis system generates a second comfort limit based on multiple second data points, wherein the multiple second data points correspond to user feedback of a user group located in the environment adjusted through the environment adjusting system, and the user feedback is used for identifying the second comfort limit on a second limit end, and the second limit end is opposite to the first limit end; the group feedback analysis system identifies a comfort region defined by the first comfort limit and the second comfort limit; and the environment adjusting system is controlled, so that at least one environment standard is maintained within the comfort region.