Methods and apparatus for combining signals from multiple diversity sources

• US 8,626,096 B2
• Filed: 03/24/2008
• Issued: 01/07/2014
• Est. Priority Date: 03/24/2008
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Park, Jong Hyeon, Sim, Bok Tae, Kim, Je Woo
• Primary Examiner(s): Pan, Yuwen
• Assistant Examiner(s): Jain, Ankur
• Application Number:
  US12/034,954
• Publication Number:
  US 20090239494A1
• Time in Patent Office: 2,115 Days
• Field of Search: 455/424, 455/425, 455/465.5, 455/456.6, 455/561, 455/550.1, 455/575.1, 455/500, 455/63.1, 455/101, 455/334, 455/272, 455/273, 375/230, 375/232, 375/229, 375/347, 375/349, 375/148, 375/260, 375/296, 375/267, 370/335, 370/342, 370/343, 370/345, 370/480, 370/330, 370/208, 370/209
• US Class Current: 455/137
• CPC Class Codes: H04B 7/0857 using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
• CPC Class Codes: H04B 7/0871 using different reception schemes, at least one of them being a diversity reception scheme
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence

Abstract

A method for combining signals coming from multiple diversity sources may include performing maximal-ratio combining (MRC) based equalization and combining for receiver antenna diversity. The method may also include performing MRC-based equalization and combining for repetition diversity. The method may also include performing MRC-based equalization and combining for duplication diversity. The MRC-based equalization and combining for receiver antenna diversity, the MRC-based equalization and combining for repetition diversity, and the MRC-based equalization and combining for duplication diversity may each be performed separately.

Claims

1. A method for combining signals coming from multiple diversity sources, comprising:

performing maximal-ratio combining (MRC) based equalization and combining for receiver antenna diversity;

performing MRC-based equalization and combining for repetition diversity; and

performing MRC-based equalization and combining for duplication diversity;

wherein the MRC-based equalization and combining for receiver antenna diversity, the MRC-based equalization and combining for repetition diversity, and the MRC-based equalization and combining for duplication diversity are each performed separately;

wherein the MRC-based equalization and combining for repetition diversity is performed after the MRC-based equalization and combining for receiver antenna diversity; and

wherein the MRC-based equalization and combining for duplication diversity is performed after the MRC-based equalization and combining for repetition diversity.

2. The method of claim 1, wherein the MRC-based equalization and combining for receiver antenna diversity is performed as

3. The method of claim 1, wherein the MRC-based equalization and combining for repetition diversity is performed as

4. The method of claim 1, wherein the MRC-based equalization and combining for duplication diversity is performed as

5. The method of claim 1, further comprising performing MRC-based equalization and combining for post processing.

6. The method of claim 5, wherein the MRC-based equalization and combining for post processing is performed as

7. The method of claim 1, further comprising:

performing MRC-based channel status information (CSI) combining for receiver antenna diversity;

performing MRC-based CSI combining for repetition diversity; and

performing MRC-based CSI combining for duplication diversity,

wherein the MRC-based CSI combining for receiver antenna diversity, the MRC-based CSI combining for repetition diversity, and the MRC-based CSI combining for duplication diversity are each performed separately.

8. The method of claim 7, wherein:

the MRC-based CSI combining for repetition diversity is performed after the MRC-based CSI combining for receiver antenna diversity; and

the MRC-based CSI combining for duplication diversity is performed after the MRC-based CSI combining for repetition diversity.

9. The method of claim 7, wherein the MRC-based CSI combining for receiver antenna diversity is performed as

10. The method of claim 7, wherein the MRC-based CSI combining for repetition diversity is performed as

11. The method of claim 7, wherein the MRC-based CSI combining for duplication diversity is performed as

12. The method of claim 7, further comprising performing MRC-based CSI combining for post processing.

13. The method of claim 12, wherein the MRC-based CSI combining for post processing is performed as

14. A wireless device for combining signals coming from multiple diversity sources, comprising:

a receiver antenna diversity equalizer and combiner that is configured to perform maximal-ratio combining (MRC) based equalization and combining for receiver antenna diversity;

a repetition diversity equalizer and combiner that is configured to perform MRC-based equalization and combining for repetition diversity; and

a duplication diversity equalizer and combiner that is configured to perform MRC-based equalization and combining for duplication diversity;

wherein the MRC-based equalization and combining for receiver antenna diversity, the MRC-based equalization and combining for repetition diversity, and the MRC-based equalization and combining for duplication diversity are each performed separately;

wherein the MRC-based equalization and combining for repetition diversity is performed after the MRC-based equalization and combining for receiver antenna diversity; and

wherein the MRC-based equalization and combining for duplication diversity is performed after the MRC-based equalization and combining for repetition diversity.

15. The wireless device of claim 14, wherein the MRC-based equalization and combining for receiver antenna diversity is performed as

16. The wireless device of claim 14, wherein the MRC-based equalization and combining for repetition diversity is performed as

17. The wireless device of claim 14, wherein the MRC-based equalization and combining for duplication diversity is performed as

18. The wireless device of claim 14, further comprising a post processing equalizer and combiner that is configured to perform MRC-based equalization and combining for post processing.

19. The wireless device of claim 18, wherein the MRC-based equalization and combining for post processing is performed as

20. The wireless device of claim 14, further comprising:

a receiver antenna diversity CSI combiner that is configured to perform MRC-based channel status information (CSI) combining for receiver antenna diversity;

a repetition diversity CSI combiner that is configured to perform MRC-based CSI combining for repetition diversity; and

a duplication diversity CSI combiner that is configured to perform MRC-based CSI combining for duplication diversity,

wherein the MRC-based CSI combining for receiver antenna diversity, the MRC-based CSI combining for repetition diversity, and the MRC-based CSI combining for duplication diversity are each performed separately.

21. The wireless device of claim 20, wherein:

the MRC-based CSI combining for repetition diversity is performed after the MRC-based CSI combining for receiver antenna diversity; and

the MRC-based CSI combining for duplication diversity is performed after the MRC-based CSI combining for repetition diversity.

22. The wireless device of claim 20, wherein the MRC-based CSI combining for receiver antenna diversity is performed as

23. The wireless device of claim 20, wherein the MRC-based CSI combining for repetition diversity is performed as

24. The wireless device of claim 20, wherein the MRC-based CSI combining for duplication diversity is performed as

25. The wireless device of claim 20, further comprising a post processing CSI combiner that is configured to perform MRC-based CSI combining for post processing.

26. The wireless device of claim 25, wherein the MRC-based CSI combining for post processing is performed as

27. An apparatus for combining signals coming from multiple diversity sources, comprising:

means for performing maximal-ratio combining (MRC) based equalization and combining for receiver antenna diversity;

means for performing MRC-based equalization and combining for repetition diversity; and

means for performing MRC-based equalization and combining for duplication diversity;

wherein the MRC-based equalization and combining for receiver antenna diversity, the MRC-based equalization and combining for repetition diversity, and the MRC-based equalization and combining for duplication diversity are each performed separately;

wherein the MRC-based equalization and combining for repetition diversity is performed after the MRC-based equalization and combining for receiver antenna diversity; and

wherein the MRC-based equalization and combining for duplication diversity is performed after the MRC-based equalization and combining for repetition diversity.

28. The apparatus of claim 27, wherein the MRC-based equalization and combining for receiver antenna diversity is performed as

29. The apparatus of claim 27, wherein the MRC-based equalization and combining for repetition diversity is performed as

30. The apparatus of claim 27, wherein the MRC-based equalization and combining for duplication diversity is performed as

31. The apparatus of claim 27, further comprising means for performing MRC-based equalization and combining for post processing.

32. The apparatus of claim 31, wherein the MRC-based equalization and combining for post processing is performed as

33. The apparatus of claim 27, further comprising:

means for performing MRC-based channel status information (CSI) combining for receiver antenna diversity;

means for performing MRC-based CSI combining for repetition diversity; and

means for performing MRC-based CSI combining for duplication diversity,

wherein the MRC-based CSI combining for receiver antenna diversity, the MRC-based CSI combining for repetition diversity, and the MRC-based CSI combining for duplication diversity are each performed separately.

34. The apparatus of claim 33, wherein:

the MRC-based CSI combining for repetition diversity is performed after the MRC-based CSI combining for receiver antenna diversity; and

the MRC-based CSI combining for duplication diversity is performed after the MRC-based CSI combining for repetition diversity.

35. The apparatus of claim 33, wherein the MRC-based CSI combining for receiver antenna diversity is performed as

36. The apparatus of claim 33, wherein the MRC-based CSI combining for repetition diversity is performed as

37. The apparatus of claim 33, wherein the MRC-based CSI combining for duplication diversity is performed as

38. The apparatus of claim 33, further comprising means for performing MRC-based CSI combining for post processing.

39. The apparatus of claim 38, wherein the MRC-based CSI combining for post processing is performed as

40. A computer-program product for combining signals coming from multiple diversity sources, the computer-program product comprising a non-transitory computer-readable medium having instructions thereon, the instructions being executable to:

perform maximal-ratio combining (MRC) based equalization and combining for receiver antenna diversity;

perform MRC-based equalization and combining for repetition diversity; and

perform MRC-based equalization and combining for duplication diversity;

wherein the MRC-based equalization and combining for receiver antenna diversity, the MRC-based equalization and combining for repetition diversity, and the MRC-based equalization and combining for duplication diversity are each performed separately;

wherein the MRC-based equalization and combining for repetition diversity is performed after the MRC-based equalization and combining for receiver antenna diversity; and

wherein the MRC-based equalization and combining for duplication diversity is performed after the MRC-based equalization and combining for repetition diversity.

41. The computer-program product of claim 40, wherein the MRC-based equalization and combining for receiver antenna diversity is performed as

42. The computer-program product of claim 40, wherein the MRC-based equalization and combining for repetition diversity is performed as

43. The computer-program product of claim 40, wherein the MRC-based equalization and combining for duplication diversity is performed as

44. The computer-program product of claim 40, wherein the instructions are also executable to perform MRC-based equalization and combining for post processing.

45. The computer-program product of claim 44, wherein the MRC-based equalization and combining for post processing is performed as

46. The computer-program product of claim 40, wherein the instructions are also executable to:

perform MRC-based channel status information (CSI) combining for receiver antenna diversity;

perform MRC-based CSI combining for repetition diversity; and

perform MRC-based CSI combining for duplication diversity,

wherein the MRC-based CSI combining for receiver antenna diversity, the MRC-based CSI combining for repetition diversity, and the MRC-based CSI combining for duplication diversity are each performed separately.

47. The computer-program product of claim 46, wherein:

the MRC-based CSI combining for repetition diversity is performed after the MRC-based CSI combining for receiver antenna diversity; and

the MRC-based CSI combining for duplication diversity is performed after the MRC-based CSI combining for repetition diversity.

48. The computer-program product of claim 46, wherein the MRC-based CSI combining for receiver antenna diversity is performed as

49. The computer-program product of claim 46, wherein the MRC-based CSI combining for repetition diversity is performed as

50. The computer-program product of claim 46, wherein the MRC-based CSI combining for duplication diversity is performed as

51. The computer-program product of claim 46, wherein the instructions are also executable to perform MRC-based CSI combining for post processing.

52. The computer-program product of claim 51, wherein the MRC-based CSI combining for post processing is performed as