公开(公告)号：EP0861533A4

公开(公告)日：2002-06-26

申请号：EP97906908

申请日：1997-02-07

Applicant: MOTOROLA INC

Inventor： LABEDZ GERALD PAUL ,  HAMIED KHALID ABDUL-AZIZ

IPC: H04W16/14 ,  H04W16/18 ,  H04W36/18 ,  H04B15/00 ,  H04Q7/36 ,  H04Q9/00

CPC classification number: H04W16/18 ,  H04W16/14 ,  H04W36/18

Abstract: A simulator/controller (113) performs real-time simulation for system control in a code-division multiple access (CDMA) wireless communication system (100). The simulator/controller (113) simulates the effects of interfering AMPS wireless communication systems which coexist with CDMA wireless communication systems and also aids in the placement of new CDMA base-stations in the presence of existing AMPS base-stations. When system parameters are input to the simulator/controller (113), real-time simulation of the CDMA wireless communication system (100) predicts potential problem areas of the CDMA wireless communication system (100) and controls the CDMA wireless communication system (100) to avoid the problems before they occur.

公开(公告)号：EP0632947A4

公开(公告)日：1997-04-16

申请号：EP94903307

申请日：1993-11-26

Applicant: MOTOROLA INC

Inventor： LOVE ROBERT TRISTAN ,  LABEDZ GERALD PAUL ,  BAUM KEVIN LYNN

IPC: H04L27/00 ,  H03H15/00 ,  H03H17/00 ,  H03H21/00 ,  H03M13/23 ,  H03M13/41 ,  H04B1/10 ,  H04B3/04 ,  H04B7/005 ,  H04L1/00 ,  H04L7/00 ,  H04L25/03 ,  H04L27/06 ,  H03M13/12

CPC classification number: H03M13/6331 ,  H03M13/41 ,  H04L25/03178 ,  H04L25/03292 ,  H04L2025/03547

Abstract: An apparatus is provided for maximum likelihood sequence estimation. The apparatus includes a first maximum likelihood sequence estimator (44) in a signal path for flat fading and an at least second maximum likelihood sequence estimator (45) in other signal path for other than fading. The apparatus further includes a switch (47) for selecting the signal path with a least relative magnitude means square error.

公开(公告)号：EP0084562A4

公开(公告)日：1984-03-26

申请号：EP82902627

申请日：1982-07-28

Applicant: MOTOROLA INC

Inventor： LABEDZ GERALD PAUL

IPC: H03B19/00 ,  G06F1/03 ,  H03B20060101 ,  H04L27/30 ,  H04M1/50 ,  H04Q1/45 ,  G06F15/20 ,  G06F15/353 ,  G10L1/10 ,  H03K13/02

CPC classification number: G06F1/0328 ,  H04M1/505

Abstract: A multi-tone signal generator and tone generating method for producing frequency combinations such as those used in dual-tone telephone dialing systems. A phase accumulator tone generator which in one embodiment comprises programmable divider (18) an accumulator (20), a ROM (22) and a latch (30) so interconnected as to generate samples of one of the tones to be encoded, at a rate much lower than would normally be required by the Nyquist criterion for the highest frequency desired. The output rate is specifically chosen so that a distortion product appears at the frequency of the second tone to be generated. The resulting samples are applied to a D/A converter (34) and then passed through a low pass filter (36).

Abstract translation: 用于产生频率组合的多音频信号发生器和乐音产生方法，例如在双音电话拨号系统中使用的频率组合。 相位累加器音调发生器，其在一个实施例中包括可编程分频器（18），累加器（20），ROM（22）和锁存器（30），其被互连以便以一定比例产生要编码的一个音调的采样 比通常所需的最高频率的奈奎斯特标准要低得多。 具体选择输出速率，使得失真产物出现在要产生的第二音调的频率上。 将所得样品施加到D / A转换器（34），然后通过低通滤波器（36）。

公开(公告)号：EP1050118A4

公开(公告)日：2003-05-07

申请号：EP98965414

申请日：1998-12-18

Applicant: MOTOROLA INC

Inventor： GHOSH AMITAVA ,  LABEDZ GERALD PAUL ,  HAAS KENNETH A

IPC: H04B7/26 ,  H04J11/00 ,  H04Q7/22 ,  H04Q7/24 ,  H04Q7/26 ,  H04Q7/30 ,  H04Q7/38

CPC classification number: H04J11/0083

Abstract: Base stations (101, 102) utilize a spreading code that is dependent upon whether the particular base station (101) is operating in a synchronized, or an unsynchronized mode. Unsynchronized base stations (102) within the communication system (100) utilize a long code unique to the particular base station (102), and base stations (101) operating in a synchronized mode utilize a time shifted version of the same long code. To reduce the search time for remote units (113) within the communication system (100), a group identification code (GIC) (305) is broadcast during a time period that the long code is masked. The GIC (305) indicates a (spreading code) long code group to which the long code of each base station belongs. Additionally, each base station (101, 102) within the communication system (100) determines its synchronization status and utilizes a particular GIC (305) and long code based on the base station's synchronization status.

公开(公告)号：EP0045801A4

公开(公告)日：1982-07-06

申请号：EP81900771

申请日：1981-01-08

Applicant: MOTOROLA INC

Inventor： LABEDZ GERALD PAUL

IPC: H03H17/00 ,  G06F17/10 ,  G06F17/15 ,  H03D3/00 ,  H03G3/00 ,  H04W88/02 ,  G06F15/31

CPC classification number: H04W88/027 ,  H03D3/00 ,  H03G3/005

Abstract: Method and apparatus (Fig. 1) for sampling input signals (20) of different frequencies and providing a detect signal when the input frequency has a predetermined value suitable for use as a tone decoder for continuous tone controlled squelch systems. The method utilizes digital pseudo continuous correlation tone detection, and includes sample matrix limiting (26 and 28) to provide rapid reverse burst turnoff, as well as background detection to avoid adjacent channel reverse burst turnoff falsing.

Abstract translation: 用于采样不同频率的输入信号（20）的方法和设备（图1），并且当输入频率具有适合用作连续音调控制的静噪系统的音调解码器的预定值时提供检测信号。 该方法利用数字伪连续相关音调检测，并且包括样本矩阵限制（26和28）以提供快速反向突发关断以及背景检测以避免相邻信道反向突发关断错误。

公开(公告)号：IN185095B

公开(公告)日：2000-11-11

申请号：IN1269DE1991

申请日：1991-02-23

Applicant: MOTOROLA INC

Inventor： LABEDZ GERALD PAUL ,  KOTZIN MICHAEL DAVID ,  SCHULER JOSEPH JOHN

IPC: H04B3/04

公开(公告)号：IE80438B1

公开(公告)日：1998-07-15

申请号：IE329590

申请日：1990-09-11

Applicant: MOTOROLA INC

Inventor： LABEDZ GERALD PAUL ,  BORTH DAVID EDWARD ,  RASKY PHILIP DAVID

IPC: H04L25/08 ,  H04L25/03 ,  H04L27/00 ,  H04L27/01 ,  H04L25/30 ,  H03M13/00

Abstract: In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering information contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from within the equalization process itself.

公开(公告)号：CA2223753A1

公开(公告)日：1997-11-06

申请号：CA2223753

申请日：1997-02-07

Applicant: MOTOROLA INC

Inventor： HAMIED KHALID ABDUL-AZIZ ,  LABEDZ GERALD PAUL

IPC: H04W16/14 ,  H04W16/18 ,  H04W36/18 ,  H04Q7/20 ,  H04B15/00 ,  H04Q7/38

Abstract: A simulator/controller (113) performs real-time simulation for system control in a code-division multiple access (CDMA) wireless communication system (100). The simulator/controller (113) simulates the effects of interfering AMPS wireless communication systems which coexist with CDMA wireless communication systems and also aids in the placement of new CDMA base-stations in the presence of existing AMPS base-stations. When system parameters are input to the simulator/controller (113), real-time simulation of the CDMA wireless communication system (100) predicts potential problem areas of the CDMA wireless communication system (100) and controls the CDMA wireless communication system (100) to avoid the problems before they occur.

公开(公告)号：HK99897A

公开(公告)日：1997-08-08

申请号：HK99897

申请日：1997-06-26

Applicant: MOTOROLA INC

Inventor： BORTH DAVID EDWARD ,  WANG CHIH-FEI ,  RABE DUANE C ,  LABEDZ GERALD PAUL

IPC: H04L27/22 ,  H04B7/185 ,  H04B7/26 ,  H04J3/00 ,  H04L7/04

公开(公告)号：DK0495006T3

公开(公告)日：1996-12-23

申请号：DK90916969

申请日：1990-09-24

Applicant: MOTOROLA INC

Inventor： BORTH DAVID EDWARD ,  LABEDZ GERALD PAUL ,  RASKY PHILLIP DAVID

IPC: H04L25/08 ,  H04L25/03 ,  H04L27/00 ,  H04L27/01 ,  H04B3/06

Abstract: In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering information contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from within the equalization process itself.