POWER CONSCIOUS SELF-HEALING TRANSCEIVER SYSTEMS AND METHODS

• US 20120128041A1
• Filed: 05/17/2011
• Published: 05/24/2012
• Est. Priority Date: 05/17/2010
• Status: Active Grant

• Current Assignee: Georgia Tech Research Corporation (University System of Georgia)
• Original Assignee: Georgia Tech Research Corporation (University System of Georgia)
• Inventors: Chatterjee, Abhijit, Sen, Shreyas, Devarakond, Shyam Kumar, Natarajan, Vishwanath
• Granted Patent: US 8,983,390 B2
• Time in Patent Office: Days
• US Class Current: 375/219
• CPC Class Codes: H04B 1/0003 Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain digital baseband systems H04L25/00; digital modulation/demodulation H04L27/00; CDMA H04B1/707; TDMA H04B7/2643; image transmission H04N5/00

Abstract

The various embodiments of the present disclosure relate generally to power-conscious self-healing transceiver systems and methods. An embodiment of the present invention provides a method of power-consciously self-healing a transceiver system. The method comprises providing a transceiver device having a plurality of tuning elements configured to control a plurality of specifications of the device, determining initial values for the plurality of tuning elements, and performing a hardware-iterative gradient search to obtain values for each tuning element such that the plurality of specifications are within a tolerated range.

Claims

1. A power-conscious self-healing transceiver system, comprising:

a transceiver device having a plurality of specifications;

a plurality of tuning elements configured to control the plurality of specifications;

a regression analysis module configured to measure the plurality of specifications from a signal transmitted through the transceiver device;

a digital signal processing (“

DSP”

) baseband module configured to transmit the signal through the transceiver device and configured to compute a cost function based on the measured plurality of specifications; and

a gradient search module configured to determine new iteration values for the plurality of tuning elements such that the plurality of specifications are within a tolerated range.

2. The power-conscious self-healing transceiver system of claim 1, wherein the regression analysis module employs architecture to implement a MARS algorithm.

3. The power-conscious self-healing transceiver system of claim 1, wherein the transceiver device comprises:

a transmitter configured to receive the signal from the DSP baseband module and up-convert the signal;

a receiver configured to receive the signal from the transmitter; and

an envelope detector configured to receive the signal from the transmitter and down-convert the signal,

wherein the regression analysis module receives the signal from the receiver and the envelope detector.

4. The power-conscious self-healing transceiver system of claim 1, wherein the gradient search module is configured to determine new iteration values for the plurality of tuning elements based on the measured plurality of specifications resulting from previous iteration values for the plurality of tuning elements.

5. The power-conscious self-healing transceiver system of claim 1, wherein the gradient search module is further configured to determine power-conscious initial iteration values for the plurality of tuning elements.

6. The power-conscious self-healing transceiver system of claim 5, wherein the power-conscious initial iteration values are determined from an initial guess function, wherein the initial guess function is derived from statistical analysis of a sample set of tuning element value variations.

7. The power-conscious self-healing transceiver system of claim 1, wherein the transceiver device is a radio-frequency transceiver device.

8. A method of power-consciously self-healing a transceiver system, the method comprising:

providing a transceiver device having a plurality of tuning elements configured to control a plurality of specifications of the transceiver device;

determining initial values for the plurality of tuning elements;

performing a hardware-iterative gradient search to obtain values for each tuning element such that the plurality of specifications are within a tolerated range.

9. The method of power-consciously self-healing a transceiver system of claim 8, further comprising the step of terminating the method if the plurality of specifications are outside of a predetermined self-healing range.

10. The method of power-consciously self-healing a transceiver system of claim 8, wherein the step of determining initial values for the plurality of tuning elements comprises evaluating a power-conscious initial guess function, wherein the power-conscious initial guess function is derived from statistical analysis of a sample set of tuning element value variations.

11. The method of power-consciously self-healing a transceiver system of claim 8, wherein the step of performing a hardware-iterative gradient search comprises at least one iteration of:

performing a first derivative approximation of a cost function of the transceiver device to obtain a gradient value along the steepest direction for each tuning element;

determining an optimum step size for each tuning element; and

adjusting the value of each tuning element by the optimum step size.

12. The method of power-consciously self-healing a transceiver system of claim 8, wherein the transceiver device is a radio-frequency transceiver device.

13. A method of power-consciously self-healing a transceiver system, the method comprising:

providing a transceiver system comprising;

a transceiver device having a plurality of specifications;

a plurality of tuning elements configured to control the plurality of specifications;

a digital signal processing (“

DSP”

) baseband module;

a gradient search module; and

a regression analysis module;

determining power-conscious initial values for the plurality of tuning elements with the gradient search module;

transmitting a signal from the DSP baseband module to an input of the transceiver subsystem;

measuring the plurality of specifications at an output of the transceiver subsystem with the regression analysis module;

computing a cost function based on the measured plurality of specifications;

determining new values for each tuning element with the gradient search module such that the plurality of specifications are within a tolerated range.

14. The method of power-consciously self-healing a transceiver system of claim 13, wherein the step of determining initial values for the plurality of tuning element comprises evaluating an initial guess function, wherein the initial guess function is derived from statistical analysis of a sample set of tuning element value variations.

15. The method of power-consciously self-healing a transceiver system of claim 13, wherein the transceiver device is a radio-frequency transceiver device.