公开(公告)号：WO1993019526A1

公开(公告)日：1993-09-30

申请号：PCT/US1993000635

申请日：1993-01-25

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  RASKY, Phillip, D. ,  CHIASSON, Gregory, M.

IPC: H03H07/40

CPC classification number: H04B7/0851 ,  H04L1/06

Abstract: A diversity receiver (300) has improved diversity weighting parameter estimation. The receiver different versions of a signal (101) having encoded data, combines the versions and decodes the data contained within the combination. The decoded data output is then re-encoded using a similar technique as that at a transmiter which transmitted the signal (101). The re-encoded data is then used to calculate a diversity weighting parameter which is used to modify a stored replica of each version. The modified versions are then combined and decoded to yield a more accurate estimate of the information contained within the signal (101) at diversity receiver (300).

公开(公告)号：WO1988009967A1

公开(公告)日：1988-12-15

申请号：PCT/US1988001789

申请日：1988-05-31

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  RASKY, Phillip, D.

IPC: G06F11/10

CPC classification number: H04L1/0065 ,  G10L19/005 ,  G11B20/1833 ,  H03M13/35 ,  H03M13/43 ,  H04B1/667 ,  H04L1/0061 ,  H04L1/007 ,  H04L1/0071

Abstract: A system and method for error correction in communication systems for transmission of digitized speech signals (Fig. 1). Sub-band coding is preferably applied to the input signal, and the sample information (102) and the side information (106, 108) provided. An error detection code (EDC) is applied to at least a portion of the side information (110) and an error correction code (ECC) is applied over the side information and the EDC (112). A second EDC is applied to the ECC (114). These information signals and error detection and correction codes are multiplexed (104), with the protected portion of the side information (PROT.) and the error correction code (ECC) separated by at least the sample information (Fig. 2). Speech signals are thus transmitted and reconstituted with improved quality with a minimum data rate required.

公开(公告)号：EP0669025A1

公开(公告)日：1995-08-30

申请号：EP93923291.0

申请日：1993-10-07

Applicant: MOTOROLA, INC.

Inventor： BORTH, David, E. ,  HAUG, John, R. ,  RASKY, Phillip, D. ,  CHIASSON, Gregory, M.

IPC: G06F11 ,  H03M13 ,  H04B7 ,  H04L1 ,  H04W88

CPC classification number: H04L1/0043 ,  H04L1/06 ,  H04W88/06

Abstract: A dual mode radio communication unit (102, 104) for a digital communication system is provided having an error controller including an error detection encoder (111) and a forward error correction encoder (112) which encode an input information signal into an error protected data bit stream. In addition, the communication unit includes a mode selector which enables either the error detection encoder or the forward error correction encoder used with a particular mode of operation of the communication unit. Further, a corresponding dual mode radio communication unit is provided having an error controller for generating estimated information signal samples according to a group of algorithms consisting of either an error detection algorithm (261) or an error correction algorithm (202). In addition, the corresponding communication unit includes a mode selector (141) for receiving a signal according to a particular one of the group of algorithms which is associated with a particular mode of operation of the corresponding communication unit.

公开(公告)号：EP0371032A1

公开(公告)日：1990-06-06

申请号：EP88905314.0

申请日：1988-05-31

Applicant: MOTOROLA, INC.

Inventor： MCLAUGHLIN, Michael, Joseph ,  RASKY, Phillip, D.

IPC: G10L19 ,  H03M13 ,  H04B1 ,  H04B14 ,  H04L1

CPC classification number: H04L1/007 ,  G10L19/005 ,  H03M13/35 ,  H04B1/667

Abstract: Un système de codage servant à la transmission et à la réception de signaux vocaux utilise des techniques d'échantillonnage, de filtrage (12) et de codage par bandes subdivisées (14) pour réduire la cadence des bits. Les niveaux d'énergie de chaque bande subdivisée sont déterminés par rapport à la bande présentant le niveau d'énergie maximum. Les informations relatives au niveau d'énergie sont codées et divisées en bits protégés et non protégés. On utilise uniquement les bits protégés pour déterminer l'affectation des bits des informations relatives aux échantillons vocaux, mais on utilise à la fois les bits protégés et les bits non protégés pour reconstituer les niveaux d'origine des bandes.

公开(公告)号：EP0669025B1

公开(公告)日：2000-03-08

申请号：EP93923291.4

申请日：1993-10-07

Applicant: MOTOROLA, INC.

Inventor： BORTH, David, E. ,  HAUG, John, R. ,  RASKY, Phillip, D. ,  CHIASSON, Gregory, M.

IPC: G06F11/10 ,  H04L1/00

CPC classification number: H04L1/0043 ,  H04L1/06 ,  H04W88/06

Abstract: A dual mode radio communication unit (102, 104) for a digital communication system is provided having an error controller including an error detection encoder (111) and a forward error correction encoder (112) which encode an input information signal into an error protected data bit stream. In addition, the communication unit includes a mode selector which enables either the error detection encoder or the forward error correction encoder used with a particular mode of operation of the communication unit. Further, a corresponding dual mode radio communication unit is provided having an error controller for generating estimated information signal samples according to a group of algorithms consisting of either an error detection algorithm (261) or an error correction algorithm (202). In addition, the corresponding communication unit includes a mode selector (141) for receiving a signal according to a particular one of the group of algorithms which is associated with a particular mode of operation of the corresponding communication unit.

公开(公告)号：WO1994011819A1

公开(公告)日：1994-05-26

申请号：PCT/US1993009565

申请日：1993-10-07

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  BORTH, David, E. ,  HAUG, John, R. ,  RASKY, Phillip, D. ,  CHIASSON, Gregory, M.

IPC: G06F11/10

CPC classification number: H04L1/0043 ,  H04L1/06 ,  H04W88/06

Abstract: A dual mode radio communication unit (102, 104) for a digital communication system is provided having an error controller including an error detection encoder (111) and a forward error correction encoder (112) which encode an input information signal into an error protected data bit stream. In addition, the communication unit includes a mode selector which enables either the error detection encoder or the forward error correction encoder used with a particular mode of operation of the communication unit. Further, a corresponding dual mode radio communication unit is provided having an error controller for generating estimated information signal samples according to a group of algorithms consisting of either an error detection algorithm (261) or an error correction algorithm (202). In addition, the corresponding communication unit includes a mode selector (141) for receiving a signal according to a particular one of the group of algorithms which is associated with a particular mode of operation of the corresponding communication unit.

Abstract translation: 提供了一种用于数字通信系统的双模无线电通信单元（102,104），其具有错误控制器，该误差控制器包括将输入信息信号编码为错误保护数据的错误检测编码器（111）和前向纠错编码器（112） 位流。 此外，通信单元包括模式选择器，其能够使得与通信单元的特定操作模式一起使用的错误检测编码器或前向纠错编码器。 此外，提供了相应的双模式无线电通信单元，其具有用于根据由错误检测算法（261）或纠错算法（202）组成的算法组来生成估计信息信号样本的误差控制器。 此外，对应的通信单元包括用于接收根据与对应的通信单元的特定操作模式相关联的算法组中的特定一个的信号的模式选择器（141）。

公开(公告)号：WO1992016054A1

公开(公告)日：1992-09-17

申请号：PCT/US1992001162

申请日：1992-02-12

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  BORTH, David, E. ,  RASKY, Phillip, D. ,  LING, Fuyun ,  EYUBOGLU, M., Vedat

IPC: H03M13/12

CPC classification number: H03M13/00 ,  H04B7/005

Abstract: A signal weighting system for associating a confidence level with portions of a communication signal transmitted upon a multipath channel (44) and received by a receiver (76). A signal received by the receiver is equalized by an equalizer circuit (60), such as a maximum likelihood sequence estimator (116), and the equalized signal generated thereby is supplied to an adaptive filter (92) which synthesizes portions of the multipath channel. The signal received by the receiver is altered responsive to values of a filtered, equalized signal generated by the adaptive filter.

公开(公告)号：WO1993001673A1

公开(公告)日：1993-01-21

申请号：PCT/US1992003757

申请日：1992-05-07

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  MUELLER, Bruce, D. ,  BAUM, Kevin, L. ,  BORTH, David, E. ,  RASKY, Phillip, D. ,  WINTER, Eric, H.

IPC: H04L27/06

CPC classification number: H04L27/22 ,  H04B7/0845 ,  H04L25/067

Abstract: A system and method for correcting for Rayleigh interference of a signal tansmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance (178) of the channel upon which the signal is transmitted, and generates signals (182, 186) indicative of such calculations which are supplied to a decoder (188). The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals.

公开(公告)号：WO1988010035A1

公开(公告)日：1988-12-15

申请号：PCT/US1988001790

申请日：1988-05-31

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  MCLAUGHLIN, Michael, Joseph ,  RASKY, Phillip, D.

IPC: H04B14/06

CPC classification number: H04L1/007 ,  G10L19/005 ,  H03M13/35 ,  H04B1/667

Abstract: An encoding system for transmission and reception of speech signals and utilizing sampling, filtering (12) and sub-band coding (14) techniques for reduction of the bit rate. The energy levels of each sub-band are determined with respect to the band having the maximum energy level. The energy level information is encoded and divided into protected and unprotected bits. Only the protected bits are used for the determination of the bit allocation of the sample information, but both protected and unprotected bits are utilized in reconstituting the original levels of the bands.

Abstract translation: 一种用于发送和接收语音信号的编码系统，并利用采样，滤波（12）和子带编码（14）技术来降低比特率。 相对于具有最大能级的频带确定每个子带的能级。 能级信息被编码并分为受保护和不受保护的位。 只有受保护的比特被用于确定样本信息的比特分配，但是利用保护的和不受保护的比特来重构波段的原始级别。

公开(公告)号：WO1994001956A2

公开(公告)日：1994-01-20

申请号：PCT/US1993005769

申请日：1993-06-17

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  STERN, Morton ,  CSAPO, John, S. ,  BORTH, David, E. ,  LYNK, Charles, N., Jr. ,  HAUG, John, R. ,  SCHORMAN, Eric, R. ,  RASKY, Phillip, D. ,  ROAZNSKI, Walter, J., Jr.

IPC: H04M0

CPC classification number: H04B7/2643 ,  H04W88/10

Abstract: The dual mode communication network comprises a first communication system having a frame structure and a first traffic channel protocol and a second communication system having the frame structure and a second traffic channel protocol. In the network, only one of the first and second traffic channel protocols supports forward error correction coding.

Abstract translation: 双模式通信网络包括具有帧结构和第一业务信道协议的第一通信系统和具有帧结构和第二业务信道协议的第二通信系统。 在网络中，第一和第二业务信道协议中只有一个支持前向纠错编码。