公开(公告)号：WO1983000588A1

公开(公告)日：1983-02-17

申请号：PCT/US1982001025

申请日：1982-07-28

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  LABEDZ, Gerald, Paul

IPC: H03B19/00

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: 用于产生诸如双音电话拨号系统中使用的频率组合的频率组合的多音调信号发生器和乐音产生方法。 一个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），所述累加器（20）和锁存器（30）以相互连接的速率生成待编码的音调之一的采样 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，使得在要产生的第二音调的频率处出现失真产物。 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：WO1991006165A1

公开(公告)日：1991-05-02

申请号：PCT/US1990005359

申请日：1990-09-24

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  LABEDZ, Gerald, Paul ,  BORTH, David, Edward ,  RASKY, Phillip, David

IPC: H04L27/01

CPC classification number: H04L25/03318

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 whithin the equalization process itself.

公开(公告)号：WO1988008650A1

公开(公告)日：1988-11-03

申请号：PCT/US1988001028

申请日：1988-03-25

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  LABEDZ, Gerald, Paul

IPC: H04B07/155

CPC classification number: H04W36/30 ,  H04B7/022 ,  H04W36/18 ,  H04W72/08

Abstract: A cellular system employing time division messages transmitted from a plurality of radiators (407, 409, 411) in each cell is disclosed. A first electromagnetic signal at a particular frequency is transmitted during one time slot (903) from one of the plurality of radiators. A second electromagnetic signal at the same frequency is transmitted during another time slot (917) from a second one of the plurality of radiators. A remote unit (401, 403) selects the best electromagnetic signal and communicates the selection to a cell controller (413), which selects a third time slot for transmission of a message from the radiator transmitting the best electromagnetic signal.

公开(公告)号：EP0861533A1

公开(公告)日：1998-09-02

申请号：EP97906908.0

申请日：1997-02-07

Applicant: MOTOROLA, INC.

Inventor： LABEDZ, Gerald, Paul ,  HAMIED, Khalid, Abdul-Aziz

IPC: H04J13 ,  H04W16 ,  H04W36

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：EP0861533B1

公开(公告)日：2004-06-30

申请号：EP97906908.5

申请日：1997-02-07

Applicant: MOTOROLA, INC.

Inventor： LABEDZ, Gerald, Paul ,  HAMIED, Khalid, Abdul-Aziz

IPC: H04B15/00 ,  H04Q9/00 ,  H04Q7/36

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

公开(公告)号：WO1997041652A1

公开(公告)日：1997-11-06

申请号：PCT/US1997002223

申请日：1997-02-07

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  LABEDZ, Gerald, Paul ,  HAMIED, Khalid, Abdul-Aziz

IPC: H04B15/00

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.

Abstract translation: 模拟器/控制器（113）在码分多址（CDMA）无线通信系统（100）中执行用于系统控制的实时仿真。 模拟器/控制器（113）模拟与CDMA无线通信系统共存的干扰AMPS无线通信系统的效果，并且还有助于在存在现有AMPS基站的情况下放置新的CDMA基站。 当系统参数被输入到模拟器/控制器（113）时，CDMA无线通信系统（100）的实时仿真预测了CDMA无线通信系统（100）的潜在问题区域并控制CDMA无线通信系统（100） 在发生问题之前避免这些问题。

公开(公告)号：WO1994015427A1

公开(公告)日：1994-07-07

申请号：PCT/US1993011495

申请日：1993-11-26

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  LOVE, Robert, Tristan ,  LABEDZ, Gerald, Paul ,  BAUM, Kevin, Lynn

IPC: H04L27/06

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.

Abstract translation: 提供了用于最大似然序列估计的装置。 该装置包括用于平坦衰落的信号路径中的第一最大似然序列估计器（44）和除了衰落之外的其它信号路径中的至少第二最大似然序列估计器（45）。 该装置还包括用于以最小相对幅度意味着平方误差来选择信号路径的开关（47）。

公开(公告)号：WO1997005717A1

公开(公告)日：1997-02-13

申请号：PCT/US1996010130

申请日：1996-06-12

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  LABEDZ, Gerald, Paul ,  STEWART, Kenneth, A.

IPC: H04B17/00

CPC classification number: H04L25/0262 ,  H04B17/20

Abstract: Communication rate in a variable rate communication system is determined by calculating metrics based upon symbol energy over a traffic channel frame (200) and selecting an optimum rate based upon the calculated metrics. The metrics are calculated by selectively accumulating symbol energy, using adders (405-408) and accumulators (409-412) in response to the presence of power control groups (201) within the traffic channel frame (200), as determined by power control group selector (400).

Abstract translation: 可变速率通信系统中的通信速率通过基于业务信道帧（200）上的符号能量计算度量并基于所计算的度量来选择最优速率来确定。 通过响应于业务信道帧（200）内存在功率控制组（201），使用加法器（405-408）和累加器（409-412）来选择性地累积符号能量来计算度量，如功率控制 组选择器（400）。

公开(公告)号：WO1990006641A1

公开(公告)日：1990-06-14

申请号：PCT/US1989004966

申请日：1989-11-13

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  DETTRO, Gregory, J. ,  LABEDZ, Gerald, Paul ,  ATKINSON, Frederick, Garland

IPC: H04J03/02

CPC classification number: H03G3/3078 ,  H04J3/10

Abstract: In a communications system having transmission containing certain information-of-interest at predetermined intervals in the transmission, there is provided a method for isolating and processing that information-of-interest. The method comprises sensing the start of a transmission and isolating for processing as the information-of-interest, the information received about instant (S) predeterminally removed in time from the sensed start of transmission. Thus the information-of-interest is isolated principally on the basis of elapsed time. The method for isolating and processing (207, 213, 215, 221, 223) that information-of-interest is further characterized by sensing the start of a transmission from the received signal power of the transmission exceeding a predetermined threshold, and AGCing (205) the transmission and attenuating the AGC'd transmission from a maximum level to a desired level before the information-of-interest is expected to arrive.

公开(公告)号：EP1050118B1

公开(公告)日：2004-03-03

申请号：EP98965414.0

申请日：1998-12-18

Applicant: MOTOROLA, INC.

Inventor： GHOSH, Amitava ,  LABEDZ, Gerald, Paul ,  HAAS, Kenneth, A.

IPC: H04B7/26 ,  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.