Method and system for diversity processing
View Patent ↗In an RF communication system, aspects for diversity processing may comprise processing a plurality of received multipath signals as clusters of signals. The received multipath signals may be diversity signals received from diversity transmit antennas at a base station. Timing information may be generated for tracking the clusters of signals. Complex phase and amplitude information may also be estimated for at least some of the multipath signals in the clusters of signals. At least a portion of the received multipath signals may be combined to form a single path processed diversity signal. A plurality of the single path processed diversity signals may be combined together, where each of the single path processed diversity signals may be derived from one of the plurality of diversity transmit antennas at the base station. The diversity signals may be transmitted via at least one of a plurality of diversity modes.
1. A method for processing received signals, the method comprising:
performing by one or more processors and/or circuits:
receiving a plurality of multipath signals as a plurality of clusters of signals, wherein said plurality of received multipath signals are diversity signals received from at least one of a plurality of diversity transmit antennas at a base station;
combining at least a portion of said plurality of received multipath signals from one of said plurality of diversity transmit antennas to form a single path processed diversity signal; and
combining at least a portion of said single path processed diversity signal with one or more subsequent despread diversity signals based on a plurality of computed channel weights, wherein each of said plurality of computed channel weights is based on received diversity mode CL 1 information and/or received diversity mode CL 2 information.
2. The method according to claim 1 , comprising generating timing information utilized for tracking at least a portion of said plurality of clusters of signals.
3. The method according to claim 1 , comprising estimating complex phase and amplitude information for at least a portion of said plurality of clusters of signals.
4. The method according to claim 1 , comprising providing coherent detection of and phase reference for said at least one of said plurality of diversity transmit antennas by monitoring at least one common pilot channel of said at least one of said plurality of diversity transmit antennas.
5. The method according to claim 1 , comprising despreading said at least a portion of said single path processing diversity signal.
6. The method according to claim 5 , comprising combining a plurality of said despread at least a portion of said single path processed diversity signals, wherein each said despread at least a portion of said single path processed diversity signal is derived from one of said plurality of diversity transmit antennas at said base station.
7. The method according to claim 1 , comprising combining said diversity signals transmitted by said plurality of diversity transmit antennas at said base station via at least one of a plurality of diversity modes.
8. The method according to claim 7 , comprising determining a plurality of channel weight information from one or both of dedicated pilot channel estimates and common pilot channel estimates.
9. The method according to claim 8 , comprising communicating said plurality of determined channel weight information to said base station for closed loop 1 diversity mode, wherein said closed loop 1 diversity mode is one of said plurality of diversity modes.
10. The method according to claim 8 , comprising communicating said plurality of determined channel weight information to said base station for closed loop 2 diversity mode, wherein said closed loop 2 diversity mode is one of said plurality of diversity modes.
11. A system for processing received signals, the system comprising:
one or more circuits that enable reception of a plurality of multipath signals as a plurality of clusters of signals, wherein said plurality of received multipath signals are diversity signals received from at least one of a plurality of diversity transmit antennas at a base station;
said one or more circuits enable combining of at least a portion of said plurality of received multipath signals from one of said plurality of diversity transmit antennas to form a single path processed diversity signal; and
said one or more circuits enable combining of at least a portion of said single path processed diversity signal with one or more subsequent despread diversity signals based on a plurality of computed channel weights, wherein each of said plurality of computed channel weights is based on received diversity mode CL 1 information and/or received diversity mode CL 2 information.
12. The system according to claim 11 , wherein said one or more circuits enable generation of timing information utilized to track at least a portion of said plurality of clusters of signals.
13. The system according to claim 11 , wherein said one or more circuits enable estimation of complex phase and amplitude information for said at least a portion of said plurality of clusters of signals.
14. The system according to claim 11 , wherein said one or more circuits enable coherent detection of and phase reference for said at least one of said plurality of diversity transmit antennas by monitoring at least one common pilot channel of said at least one of said plurality of diversity transmit antennas.
15. The system according to claim 11 , wherein said one or more circuits enable despreading of said at least a portion of said single path processing diversity signal.
16. The system according to claim 15 , wherein said one or more circuits enable combining of a plurality of said despread said at least a portion of said single path processed diversity signals, wherein each said despread at least a portion of said single path processed diversity signal is derived from one of said plurality of diversity transmit antennas at said base station.
17. The system according to claim 11 , wherein said one or more circuits enable combining of said diversity signals transmitted by said plurality of diversity transmit antennas at said base station via at least one of a plurality of diversity modes.
18. The system according to claim 17 , wherein said one or more circuits enable determination of a plurality of channel weight information from one or both of dedicated pilot channel estimates and common pilot channel estimates.
19. The system according to claim 18 , wherein said one or more circuits enable communication of said plurality of determined channel weight information to said base station for closed loop 1 diversity mode, wherein said closed loop 1 diversity mode is one of said plurality of diversity modes.
20. The system according to claim 18 , wherein said one or more circuits enable communication of said plurality of determined channel weight information to said base station for closed loop 2 diversity mode, wherein said closed loop 2 diversity mode is one of said plurality of diversity modes.
21. A method for processing received signals, the method comprising:
receiving a plurality of multipath signals, wherein said plurality of received multipath signals are diversity signals received from at least one of a plurality of diversity transmit antennas at a base station;
combining at least a portion of said plurality of received multipath signals from one of said plurality of diversity transmit antennas to form a single path processed diversity signal;
despreading at least a portion of said single path processed diversity signal; and
combining said despread at least a portion of said single path processed diversity signal with one or more subsequent despread diversity signals based on a plurality of computed channel weights, wherein each of said plurality of computed channel weights is based on one or more diversity modes.
22. The method according to claim 21 , comprising generating timing information utilized for tracking at least a portion of said plurality of multipath signals.
23. The method according to claim 21 , comprising estimating complex phase and amplitude information for at least a portion of said plurality of multipath signals.
24. The method according to claim 21 , comprising providing coherent detection of and phase reference for said at least one of said plurality of diversity transmit antennas by monitoring at least one common pilot channel of said at least one of said plurality of diversity transmit antennas.
25. The method according to claim 21 , wherein said one or more diversity modes comprise received CL 1 information.
26. The method according to claim 21 , wherein said one or more diversity modes comprise received CL 2 information.
27. The method according to claim 21 , comprising combining said diversity signals, wherein said diversity signals are transmitted by said plurality of diversity transmit antennas utilizing said one or more diversity modes.
28. The method according to claim 27 , comprising determining a plurality of channel weight information from one or both of dedicated pilot channel estimates and common pilot channel estimates, wherein said one or both of said dedicated pilot channel estimates and said common pilot channel estimates are computed based on said combined diversity signals.
29. The method according to claim 28 , comprising communicating said plurality of determined channel weight information to said base station.
30. The method according to claim 21 , wherein said one or more diversity modes comprise an open loop space-time transmit diversity mode.
31. A system for processing received signals, the system comprising:
one or more circuits that enable reception of a plurality of multipath signals, wherein said plurality of received multipath signals are diversity signals received from at least one of a plurality of diversity transmit antennas at a base station;
said one or more circuits enable combining of at least a portion of said plurality of received multipath signals from one of said plurality of diversity transmit antennas to form a single path processed diversity signal;
said one or more circuits enable despreading of at least a portion of said single path processed diversity signal; and
said one or more circuits enable combining of at least a portion of said single path processed diversity signal with one or more subsequent despread diversity signals based on a plurality of computed channel weights, wherein each of said plurality of computed channel weights is based on one or more diversity modes.
32. The system according to claim 31 , wherein said one or more circuits enable generation of timing information utilized to track at least a portion of said plurality of multipath signals.
33. The system according to claim 31 , wherein said one or more circuits enable estimation of complex phase and amplitude information for said at least a portion of said plurality of multipath signals.
34. The system according to claim 31 , wherein said one or more circuits enable coherent detection of and phase reference for said at least one of said plurality of diversity transmit antennas by monitoring at least one common pilot channel of said at least one of said plurality of diversity transmit antennas.
35. The system according to claim 31 , wherein said one or more diversity modes comprise received CL 1 information.
36. The system according to claim 31 , wherein said one or more diversity modes comprise received CL 2 information.
37. The system according to claim 31 , wherein said one or more circuits enable combining of said diversity signals, wherein said diversity signals are transmitted by said plurality of diversity transmit antennas utilizing said one or more diversity modes.
38. The system according to claim 37 , wherein said one or more circuits enable determination of a plurality of channel weight information from one or both of dedicated pilot channel estimates and common pilot channel estimates, wherein said one or both of said dedicated pilot channel estimates and said common pilot channel estimates are computed based on said combined diversity signals.
39. The system according to claim 38 , wherein said one or more circuits enable communication of said plurality of determined channel weight information to said base station.
40. The system according to claim 31 , wherein said one or more diversity modes comprise an open loop space-time transmit diversity mode.