公开(公告)号：AU2003284881A1

公开(公告)日：2004-05-13

申请号：AU2003284881

申请日：2003-10-22

Applicant: QUALCOMM INC

Inventor： ABRISHAMKAR FARROKH ,  KREUTZ-DELGADO KENNETH

IPC: H03H21/00 ,  H04B1/707 ,  H04L25/03

公开(公告)号：AU2003245408A8

公开(公告)日：2003-12-22

申请号：AU2003245408

申请日：2003-06-05

Applicant: QUALCOMM INC

Inventor： ABRISHAMKAR FARROKH ,  KREUTZ-DELGADO KENNETH

IPC: H04B1/707 ,  H04L25/03 ,  H03H21/00

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 Kalman filter to produce a pilot estimate. 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. The Kalman filter is configured by an offline system identification process that calculates parameters using a prediction error method and a Gauss-Newton algorithm and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.

公开(公告)号：BRPI0408266A

公开(公告)日：2006-03-07

申请号：BRPI0408266

申请日：2004-03-11

Applicant: QUALCOMM INC

Inventor： ABRISHAMKAR FARROKH ,  ARIYUR KARTIK B ,  KREUTZ-DELGADO KENNETH

IPC: H04B1/707

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.

公开(公告)号：AU2003251413A1

公开(公告)日：2003-12-22

申请号：AU2003251413

申请日：2003-06-05

Applicant: QUALCOMM INC

Inventor： BUTLER BRIAN K ,  MOHSENI MOHAMMAD JAFAR ,  KREUTZ-DELGADO KENNETH ,  ABRISHAMKAR FARROKH

IPC: H04B1/707 ,  H04L25/03 ,  H04L25/02

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 Kalman filter to produce a pilot estimate. 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. The Kalman filter is configured by an offline system identification process that calculates parameters using a maximum likelihood parameter estimation and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.

公开(公告)号：AU2003251412A1

公开(公告)日：2003-12-22

申请号：AU2003251412

申请日：2003-06-05

Applicant: QUALCOMM INC

Inventor： ABRISHAMKAR FARROKH ,  KREUTZ-DELGADO KENNETH

IPC: H04B1/707 ,  H03H21/00

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 Kalman filter to produce a pilot estimate. 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. The Kalman filter is configured by an offline system identification process that calculates parameters using a prediction error method and pseudo linear regression and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.

公开(公告)号：AU2003245408A1

公开(公告)日：2003-12-22

申请号：AU2003245408

申请日：2003-06-05

Applicant: QUALCOMM INC

Inventor： ABRISHAMKAR FARROKH ,  KREUTZ-DELGADO KENNETH

IPC: H04B1/707

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 Kalman filter to produce a pilot estimate. 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. The Kalman filter is configured by an offline system identification process that calculates parameters using a prediction error method and a Gauss-Newton algorithm and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.