Claims
- 1. In a wireless communication system, a method comprising:
receiving a CDMA signal; despreading the CDMA signal; obtaining a pilot signal from the CDMA signal; and estimating an original pilot signal using a Wiener filter to produce a pilot estimate.
- 2. The method as in claim 1, wherein the CDMA signal is transmitted on a downlink and wherein the downlink comprises a pilot channel.
- 3. The method as in claim 1, wherein the CDMA signal is transmitted on an uplink and wherein the uplink comprises a pilot channel.
- 4. The method as in claim 1, further comprising demodulating the pilot estimate.
- 5. The method as in claim 1, wherein the Wiener filter was configured by an offline filter determination process.
- 6. The method as in claim 5, wherein the offline filter determination process comprises calculating parameters of the Wiener filter to minimize the mean-square error.
- 7. The method as in claim 6, wherein the parameters of the Wiener filter are calculated according to the following formula:
- 8. In a mobile station for use in a wireless communication system, a method comprising:
receiving a CDMA signal; despreading the CDMA signal; obtaining a pilot signal from the CDMA signal; and estimating an original pilot signal using a Wiener filter to produce a pilot estimate.
- 9. The method as in claim 8, wherein the CDMA signal is transmitted on a downlink and wherein the downlink comprises a pilot channel.
- 10. The method as in claim 8, further comprising demodulating the pilot estimate.
- 11. The method as in claim 8, wherein the Wiener filter was configured by an offline filter determination process.
- 12. The method as in claim 11, wherein the offline filter determination process comprises calculating parameters of the Wiener filter to minimize the mean-square error.
- 13. The method as in claim 12, wherein the parameters of the Wiener filter are calculated according to the following formula:
- 14. A mobile station for use in a wireless communication system, the mobile station comprising:
an antenna for receiving a CDMA signal; a receiver in electronic communication with the antenna; a front-end processing and despreading component in electronic communication with the receiver for despreading the CDMA signal; a pilot estimation component in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a Wiener filter to produce a pilot estimate; and a demodulation component in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols to the mobile station.
- 15. The mobile station as in claim 14, wherein the receiver receives the CDMA signal transmitted on a downlink and wherein the downlink comprises a pilot channel.
- 16. The mobile station as in claim 14, wherein the Wiener filter was configured by an offline filter determination process.
- 17. The mobile station as in claim 16, wherein the offline filter determination process comprises calculating parameters of the Wiener filter to minimize the mean-square error.
- 18. The mobile station as in claim 17, wherein the parameters of the Wiener filter are calculated according to the following formula:
- 19. A mobile station for use in a wireless communication system, the mobile station comprising:
means for receiving a CDMA signal; means for despreading the CDMA signal; means for obtaining a pilot signal from the CDMA signal; and means for estimating an original pilot signal using a Wiener filter to produce a pilot estimate.
- 20. The mobile station as in claim 19, wherein the CDMA signal is transmitted on a downlink and wherein the downlink comprises a pilot channel.
- 21. The mobile station as in claim 19, further comprising means for demodulating the pilot estimate.
- 22. The mobile station as in claim 19, wherein the Wiener filter was configured by an offline filter determination process.
- 23. The mobile station as in claim 22, wherein the offline filter determination process comprises calculating parameters of the Wiener filter to minimize the mean-square error.
- 24. The mobile station as in claim 23, wherein the parameters of the Wiener filter are calculated according to the following formula:
RELATED APPLICATIONS
[0001] Claim of Priority under 35 U.S.C. §119(e)
[0002] The present Application for Patent claims priority of U.S. Provisional Application No. 60/386,964, filed Jun. 5, 2002, assigned to the assignee hereof and hereby expressly incorporated by reference herein.
[0003] Reference to Co-Pending Applications for Patent
[0004] The present invention is related to the following Applications for Patent in the U.S. Patent & Trademark Office:
[0005] “Method And Apparatus For Pilot Estimation Using Suboptimum Expectation Maximization” by Farrokh Abrishamkar et al., having Attorney Docket No. 020123, filed concurrently herewith and assigned to the assignee hereof;
[0006] “Method And Apparatus For Pilot Estimation Using A Prediction Error Method With A Kalman Filter And Pseudo-Linear Regression”, by Farrokh Abrishamkar et al., having Attorney Docket No. 020201, filed concurrently herewith and assigned to the assignee hereof;
[0007] “Method And Apparatus For Pilot Estimation Using A Prediction Error Method With A Kalman Filter And A Gauss-Newton Algorithm,” by Farrokh Abrishamkar et al., having Attorney Docket No. 020205, filed concurrently herewith and assigned to the assignee hereof; and
[0008] “Method And Apparatus For Pilot Estimation Using An Adaptive Prediction Error Method With a Kalman Filter and A Gauss-Newton Algorithm,” by Farrokh Abrishamkar et al., having Attorney Docket No. 020232, filed concurrently herewith and assigned to the assignee hereof.
Provisional Applications (1)
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Number |
Date |
Country |
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60386964 |
Jun 2002 |
US |