Apparatus and method of adaptive filter

• US 20060045203A1
• Filed: 09/01/2004
• Published: 03/02/2006
• Est. Priority Date: 09/01/2004
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Pick, Kobby, Yellin, Daniel
• Granted Patent: US 7,477,686 B2
• Time in Patent Office: Days
• US Class Current: 375/295
• CPC Class Codes: H04L 27/368 adaptive predistortion

Abstract

Briefly, according to some embodiments of the invention a method and apparatus to generate a filter are provided. The apparatus may include a phase modulation unit to vary a phase component of a signal, a measurement unit to measure a parameter of the phase modulation unit and a filter generator to generate a filter based on the parameter. In some embodiments of the invention, the filter is adapted to provide a compensated signal to the phase modulation unit to compensate for deviation of the parameter.

Claims

1. A method comprising:

generating a matrix of predetermined filters based on one or more filter parameters;

measuring an actual parameter related to a phase modulation unit; and

generating a filter based on the actual parameter and the predetermined filters for providing a compensated signal to compensate deviation of the actual parameter of the phase modulation unit.

2. The method of claim 1, wherein generating the matrix comprises:

calculating a predetermined filter based on a filter parameter and generating the filter based on the predetermined filter.

3. The method of claim 2, wherein calculating comprises:

calculating two or more predetermined filters based on combinations of two or more filter parameters.

4. The method of claim 3, further comprising:

storing the matrix of calculated filter parameters vectors; and

generating the filter based on the matrix.

5. The method of claim 4, wherein generating the filter comprises:

interpolating the actual parameter with the two or more stored predetermined filters.

6. An apparatus comprising:

a matrix of predetermined filters;

a phase modulation unit to vary a phase component of a signal;

a measurement unit to measure an actual parameter of the phase modulation unit;

a filter operable coupled to the measurement unit; and

a filter generator to generate the filter based on the actual parameter and a predetermined filter of the matrix of predetermined filters, wherein the filter is adapted to provide a compensated signal to the phase modulation unit to compensate for deviation of the actual parameter.

7. The apparatus of claim 6, comprising:

a calculator to calculate the predetermined filter based on a filter parameter, wherein the filter generator is able to generate the filter based on the predetermined filter.

8. The apparatus of claim 7, wherein the calculator is adapted to calculate two or more predetermined filters based on combinations of two or more filter parameters.

9. The apparatus of claim 8, comprising:

a memory to store the matrix of predetermined filters.

10. The apparatus of claim 6, comprising:

an interpolator to interpolate the actual parameter with the matrix of predetermined filters.

11. A communication device comprising:

an internal antenna to transmit a signal;

a matrix of predetermined filters;

a phase modulation unit to vary a phase component of the signal;

a measurement unit to measure an actual parameter of the phase modulation unit;

a filter operably coupled to the measurement unit; and

a filter generator to generate the filter based on the actual parameter and a predetermined filter of the matrix of predetermined filters, wherein the filter is adapted to provide a compensated signal to the phase modulation unit to compensate for deviation of the actual parameter.

12. The communication device of claim 11, comprising:

a calculator to calculate the predetermined filter based on a filter parameter, wherein the filter generator is able to generate the filter based on the predetermined filter.

13. The communication device of claim 12, wherein, the calculator is adapted to calculate two or more predetermined filter is based on combinations of two or more filter parameters.

14. The communication device of claim 13, comprising:

a memory to store the matrix of predetermined filters.

15. The communication device of claim 11, comprising:

an interpolator to interpolate the actual parameter with the two or more stored predetermined filters.

16. A communication system comprising:

a wireless communication device that includes a phase modulation unit to vary a phase component of a signal;

a matrix of predetermined filters;

a measurement unit to measure an actual parameter of the phase modulation unit;

a filter operably coupled to the measurement unit; and

a filter generator to generate the filter based on the actual parameter and a predetermined filter of the matrix of predetermined filters, wherein the filter is adapted to provide a compensated signal to the phase modulation unit to compensate for deviation of the actual parameter.

17. The communication system of claim 16, wherein the wireless communication device, comprises:

a calculator to calculate the predetermined filter based on a filter parameter, wherein the filter generator is able to generate the filter based on the predetermined filter.

18. The communication system of claim 17, wherein the calculator is adapted to calculate two or more predetermined filters based on combinations of two or more filter parameters.

19. The communication system of claim 18, wherein the wireless communication device comprises:

a memory to store the matrix of predetermined filters.

20. The communication system of claim 16, wherein the wireless communication device comprises:

an interpolator to interpolate actual parameter with the matrix of predetermined filters.

21. An article comprising:

a storage medium, having stored thereon instructions that, when executed, result in;

generating a matrix of predetermined filters based on one or more filter parameters;

measuring an actual parameter related to a phase modulation unit; and

generating a filter based on the actual parameter and the predetermined filters for providing a compensated signal to compensate deviation of the actual parameter of the phase modulation unit.

22. The article of claim 21, further includes instructions for generating the matrix that, when executed, result in:

calculating a predetermined filter based on a filter parameter and generating the filter based on the predetermined filter.

23. The article of claim 22, wherein the instruction of calculating, when executed, results in:

calculating two or more predetermined filters based on combinations of two or more filter parameters.

24. The article of claim 23, further includes instructions that, when executed, result in:

storing the matrix of calculated filter parameters vectors; and

generating the filter based on the two or more stored predetermined filters.

25. The article of claim 24, wherein the instruction of generating, when executed, results in:

interpolating the actual parameter with the two or more stored predetermined filters.