Pilot estimation using prediction error method-switched filters
First Claim
1. In a wireless communication system, a method for estimating an original pilot signal, the 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 pilot estimator that includes more than one filter and that includes a switching method for using the more than one filter, wherein the switching method uses a prediction error, and wherein the pilot estimator provides a pilot estimate.
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Abstract
A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver and a front-end processing and despreading component in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a pilot estimator that includes more than one filter and that includes a switching method for using the more than one filter. The switching method uses a prediction error. A demodulation component is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols.
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Citations
22 Claims
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1. In a wireless communication system, a method for estimating an original pilot signal, the method comprising:
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receiving a CDMA signal;
despreading the CDMA signal;
obtaining a pilot signal from the CDMA signal; and
estimating an original pilot signal using a pilot estimator that includes more than one filter and that includes a switching method for using the more than one filter, wherein the switching method uses a prediction error, and wherein the pilot estimator provides a pilot estimate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile station for use in a wireless communication system wherein the mobile station is configured to estimate an original pilot signal, the mobile station comprising:
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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 pilot estimator that includes more than one filter and that includes a switching method for using the more than one filter, wherein the switching method uses a prediction error, and wherein the pilot estimator provides 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. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A mobile station for use in a wireless communication system wherein the mobile station is configured to estimate an original pilot signal, the mobile station comprising:
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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 pilot estimator that includes more than one filter and that includes a switching method for using the more than one filter, wherein the switching method uses a prediction error, and wherein the pilot estimator provides a pilot estimate.
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Specification