公开(公告)号：JPH11168448A

公开(公告)日：1999-06-22

申请号：JP27432698

申请日：1998-09-10

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  BECKER CHRISTOPHER J ,  EBERHARDT MICHAEL A ,  FRANK COLIN D ,  RASKY PHILLIP D

IPC: H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To provide a lake receiver and a finger managing method improved for providing the merit of path diversity even when the interval of multipath radio waves is shorter than one-chip time. SOLUTION: A lake receiver 112 is provided with plural fingers 122, 124 and 128. Each finger is provided with a demodulator for demodulating the radio waves of multiple path signals and a time tracking circuit for controlling the timewise position of the finger based on the timewise position of the radio wave. Low delay spreading conditions are detected, the positions of two adjacent fingers are controlled and fingers more than two are prevented from being converged around a common timewise position. By maintaining the timing intervals of fingers, even during low delay spreading conditions, the path diversity is effectively utilized by the lake receiver 112 and the performance of the receiver is improved.

公开(公告)号：JPH10242906A

公开(公告)日：1998-09-11

申请号：JP27819397

申请日：1997-09-25

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  MICHAEL JOHN CARNEY ,  BECKER CHRISTOPHER J ,  LING FUYUN

IPC: H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L25/02

Abstract: PROBLEM TO BE SOLVED: To make it possible to construct the whole power control data route by a demodulator in a spread spectrum subscriber's unit receiver only by the less increment of the number of gates by executing the time sharing of demodulator hardware among a main data route and the power control data route and a receiving signal strength indicator(RSSI) route. SOLUTION: The main data route 165 and the power control data route 161 execute time-sharing among a complex conjugate generator 270, a complex multiplier 280 and a real number component extractor 290. Provided that a channel estimation filter 240 in the route 165 can not execute time sharing with the route 161 to hold a timing condition. Instead of the state, dynamic coefficient scaling is added to an infinite impulse response(IIR) filter 250 and the IIR filter 250 having the dynamic coefficient scaling can execute time sharing between the RSSI route 163 and the route 161.

公开(公告)号：GB2322773B

公开(公告)日：2001-09-26

申请号：GB9719113

申请日：1997-09-10

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  BECKER CHRISTOPHER J ,  LING FUYUN

IPC: H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L25/02

Abstract: By time-sharing demodulator hardware between a primary data path (165), a power control data path (161), and a received signal strength indicator (RSSI) path (163), an entire power control data path (161) can be implemented in a demodulator (140) of a spread spectrum subscriber unit receiver with a low increase in gate count. The primary data path (165) and the power control data path (161) time-share a complex conjugate generator (270), a complex multiplier (280), and a real component extractor (290). Due to timing requirements, though, the channel estimation filter (240) of the primary data path cannot be time-shared with the power control data path. Instead, dynamic coefficient scaling is added to an infinite-duration impulse response (IIR) filter in the RSSI path (163) so that the IIR filter (250) with dynamic coefficient scaling can be time-shared between the RSSI path (163) and the power control data path (161).

公开(公告)号：GB2322773A

公开(公告)日：1998-09-02

申请号：GB9719113

申请日：1997-09-10

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  BECKER CHRISTOPHER J ,  LING FUYUN

IPC: H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L25/02

Abstract: By time-sharing demodulator hardware between a primary data path (165), a power control data path (161), and a received signal strength indicator (RSSI) path (163), an entire power control data path (161) can be implemented in a demodulator (140) of a spread spectrum subscriber unit receiver with a low increase in gate count. The primary data path (165) and the power control data path (161) time-share a complex conjugate generator (270), a complex multiplier (280), and a real component extractor (290). Due to timing requirements, though, the channel estimation filter (240) of the primary data path cannot be time-shared with the power control data path. Instead, dynamic coefficient scaling is added to an infinite-duration impulse response (IIR) filter in the RSSI path (163) so that the IIR filter (250) with dynamic coefficient scaling can be time-shared between the RSSI path (163) and the power control data path (161).

公开(公告)号：AU2003254256A8

公开(公告)日：2004-02-23

申请号：AU2003254256

申请日：2003-07-30

Applicant: MOTOROLA INC

Inventor： RAMASWAMY KARTHIK ,  BECKER CHRISTOPHER J ,  CARNEY MICHAEL

IPC: H04J13/00 ,  H04B7/26 ,  H04W36/18 ,  H04J3/06

公开(公告)号：AU735531B2

公开(公告)日：2001-07-12

申请号：AU7861798

申请日：1998-07-31

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  BECKER CHRISTOPHER J ,  EBERHARDT MICHAEL A ,  FRANK COLIN D ,  RASKY PHILLIP D

IPC: H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04J13/04 ,  H04B7/216

Abstract: A RAKE receiver (112) includes a plurality of fingers (122, 124, 126, 128). Each finger includes a demodulator (402) for demodulating a ray of a multipath signal and a time tracking circuit (404) for controlling the time position of the finger in accordance with time position of the ray. A low delay-spread condition is detected and the positions of two adjacent fingers are controlled to prevent convergence of two or more fingers about a common time position. By maintaining finger timing separation, path diversity is exploited by the RAKE receiver even during the low delay-spread condition to improve receiver performance.

公开(公告)号：BR9803430A

公开(公告)日：1999-11-03

申请号：BR9803430

申请日：1998-09-11

Applicant: MOTOROLA INC

Inventor： ROSA CRISTOPHER P LA ,  CARNEY MICHAEL J ,  BECKER CHRISTOPHER J ,  EBERHARDT MICHAEL A ,  FRANK COLIN D ,  RASKY PHILLIP D

IPC: H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04Q7/22

Abstract: A RAKE receiver (112) includes a plurality of fingers (122, 124, 126, 128). Each finger includes a demodulator (402) for demodulating a ray of a multipath signal and a time tracking circuit (404) for controlling the time position of the finger in accordance with time position of the ray. A low delay-spread condition is detected and the positions of two adjacent fingers are controlled to prevent convergence of two or more fingers about a common time position. By maintaining finger timing separation, path diversity is exploited by the RAKE receiver even during the low delay-spread condition to improve receiver performance.

公开(公告)号：DE19841148A1

公开(公告)日：1999-04-01

申请号：DE19841148

申请日：1998-09-09

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  BECKER CHRISTOPHER J ,  EBERHARDT MICHAEL A ,  FRANK COLIN D ,  RASKY PHILLIP D

IPC: H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04J13/02

Abstract: The provision of time control systems for individual teeth of circuit ensures separation of spread spectral components The comb type receiver (112) comprises a number of teeth (122,124,126, 128). Each tooth comprises a demodulator (402) for demodulating the beam of a signal with multiple channels, and a time tracking circuit (404) for controlling the time position of the tooth as a function of the time position of the beam. A state of weak detected spread delay, and the positions of two adjacent teeth are controlled to prevent the convergence of two or several teeth about a common time position. By maintaining the time difference of the teeth, the diversity of the channels is used by the comb type receiver in a weak spread delay state to improve the performance of the receiver.

公开(公告)号：FI981939A0

公开(公告)日：1998-09-09

申请号：FI981939

申请日：1998-09-09

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  BECKER CHRISTOPHER J ,  EBERHARDT MICHAEL A ,  FRANK COLIN D ,  RASKY PHILLIP D

IPC: H04B1/7113 ,  H04B1/7115 ,  H04B1/7117 ,  H04B

Abstract: A RAKE receiver (112) includes a plurality of fingers (122, 124, 126, 128). Each finger includes a demodulator (402) for demodulating a ray of a multipath signal and a time tracking circuit (404) for controlling the time position of the finger in accordance with time position of the ray. A low delay-spread condition is detected and the positions of two adjacent fingers are controlled to prevent convergence of two or more fingers about a common time position. By maintaining finger timing separation, path diversity is exploited by the RAKE receiver even during the low delay-spread condition to improve receiver performance.

公开(公告)号：WO2004013976A3

公开(公告)日：2004-07-22

申请号：PCT/US0323758

申请日：2003-07-30

Applicant: MOTOROLA INC

Inventor： BECKER CHRISTOPHER J ,  RAMASWAMY KARTHIK ,  CARNEY MICHAEL

IPC: H04J13/00 ,  H04B7/26 ,  H04W36/18 ,  H04J3/06

CPC classification number: H04B1/7113 ,  H04B1/70754 ,  H04B1/7117 ,  H04B2201/70702 ,  H04W36/18

Abstract: A method (500) and a mobile station (160) for reporting multi-path signals based on a report window are described herein. The mobile station (160) may determine a distribution of a plurality of multi-path signals observed by a receiving unit (220) within the mobile station (160). The mobile station (160) may determine a report window based on the distribution. Based on the report window, the mobile station (160) may report at least one of the plurality of multi-path signals.

Abstract translation: 这里描述了一种用于基于报告窗口报告多路径信号的方法（500）和移动站（160）。 移动站（160）可以确定由移动台（160）内的接收单元（220）观察到的多个多径信号的分布。 移动站（160）可以基于分布来确定报告窗口。 基于报告窗口，移动站（160）可以报告多个多路径信号中的至少一个。