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1. 发明授权

EP1262027B1 METHOD OF DIFFERENTIAL CODING AND MODULATION 有权
标题翻译：方法差编码和调制的
公开(公告)号：EP1262027B1
公开(公告)日：2005-08-31
申请号：EP01907055.6
申请日：2001-02-07
申请人： Ericsson Inc.
发明人： KHAYRALLAH, Ali, S.
IPC分类号： H03M13/35 , H03M7/36
CPC分类号： H03M7/3002 , H03M13/35 , H04B14/066 , H04L27/22 , H04L2001/0098

2. 发明授权

EP1092280B1 AN EQUALIZER WITH CHANNEL TRACKER SWITCHING 有权
标题翻译：均衡器换频道TRACKER
公开(公告)号：EP1092280B1
公开(公告)日：2003-07-30
申请号：EP99920359.9
申请日：1999-05-05
申请人： ERICSSON INC.
发明人： KHAYRALLAH, Ali, S.
IPC分类号： H04B7/005 , H04L25/02
CPC分类号： H04L1/0059 , H04L1/0047 , H04L1/0054 , H04L1/0061 , H04L25/0202
摘要： An equalizer (74) is provided for use in a mobile radio communication system for compensating for changing channel conditions caused by movement of a mobile communication device at varying speeds. The equalizer includes an estimator (84) receiving a digital signal (72) transmitted over a communication channel, the digital signal being adversely modified by fading during transmission caused by movement of the mobile communication device at varying speeds, and a channel estimate signal (94), the estimator responsively producing a decision signal (96) representing an approximation of the transmitted digital signal with fading eliminated. First and second channel trackers (86, 88) are provided, each tuned to a different speed of the mobile communication device and each receiving the decision signal. A decision circuit receives the decision signal and responsively selects one of the first and second channel trackers to produce the channel estimate signal.

3. 发明公开

EP1261961A1 METHODS AND SYSTEMS FOR NOISE REDUCTION FOR SPATIALLY DISPLACED SIGNAL SOURCES 有权
标题翻译：方法和系统进行降噪领土OFFSET来源
公开(公告)号：EP1261961A1
公开(公告)日：2002-12-04
申请号：EP01904915.4
申请日：2001-01-18
申请人： Ericsson Inc.
发明人： KRASNY, Leonid , KHAYRALLAH, Ali, S.
IPC分类号： G10K11/178
CPC分类号： G10K11/178
摘要： The spatial characteristics associated with the respective locations of various signal sources within the receiver environment, such as a vehicle, are used in processing received signals from the signal sources. The use of the spatial characteristics may provide improved noise reduction and further, in various embodiments of the present invention, may be used to apply a selected suppression level to one or more of the signal sources. For example, in a vehicle hands-free speech reception system, far-end feedback from a speaker in the vehicle may be substantially suppressed while speech from a driver and a passenger in the vehicle may be processed with substantially zero decibels of suppression. The suppression levels may be user selectable.

4. 发明授权

EP0928520B1 ERROR DETECTION SCHEME FOR ARQ SYSTEMS 失效
标题翻译：法故障检测系统自动重复请求
公开(公告)号：EP0928520B1
公开(公告)日：2002-11-27
申请号：EP97942637.6
申请日：1997-09-22
申请人： Ericsson, Inc.
发明人： IRVIN, David, R. , KHAYRALLAH, Ali, S.
IPC分类号： H03M13/00 , H04L1/18
CPC分类号： H03M13/093 , G11B20/1803 , H04L1/0001 , H04L1/1628 , H04L1/18 , H04L1/1806 , H04L1/1809 , H04L1/1812 , H04L1/1838 , H04L1/1845 , H04L1/1877 , H04L1/188 , H04L2001/0093

5. 发明授权

EP0931382B1 METHOD AND APPARATUS FOR DECODING BLOCK CODES 失效
标题翻译：方法和装置解码块码
公开(公告)号：EP0931382B1
公开(公告)日：2002-02-27
申请号：EP97912651.3
申请日：1997-10-07
申请人： ERICSSON INC.
发明人： HASSAH, Amer, A. , KHAYRALLAH, Ali, S. , OSTHOFF, Harro
IPC分类号： H03M13/00
CPC分类号： H03M13/3944 , H03M13/05 , H03M13/3707 , H03M13/3723 , H03M13/6325
摘要： A decoding system processes a received vector r to produce a soft symbol information vector output s including a reliability value for each received code symbol. From the reliability values, clusters of symbols within the received vector r having low reliability are identified and detected. Responsive thereto, the received vector r is permuted to scatter the low reliability symbols within each detected low reliability cluster throughout a given codeword. A decoding generator matrix G is also correspondingly permuted in response to the detection of low reliability clusters of symbols. Utilizing a trellis obtained from the permuted decoding generator matrix G', the permuted received vector r' is then sequentially or otherwise suboptimally decoded.

6. 发明授权

EP1075736B1 TRANSMIT DIVERSITY METHODS, SYSTEMS, AND TERMINALS USING SCRAMBLE CODING 有权
标题翻译：发送分集方式，系统和设备与SCRAMBLER CODING
公开(公告)号：EP1075736B1
公开(公告)日：2001-12-19
申请号：EP99915107.9
申请日：1999-03-30
申请人： ERICSSON INC.
发明人： KHAYRALLAH, Ali, S. , ZANGI, Kambiz, C. , RAMESH, Rajaram
IPC分类号： H04B7/02 , H04L1/02
CPC分类号： H04B7/0669 , H04L1/0618

7. 发明公开

EP1123587A2 DIVERSITY RECEIVER FOR RADIO COMMUNICATIONS 审中-公开
标题翻译：分集接收机用于无线电通信
公开(公告)号：EP1123587A2
公开(公告)日：2001-08-16
申请号：EP99954704.5
申请日：1999-10-04
申请人： Ericsson, Inc.
发明人： KHAYRALLAH, Ali, S. , BOTTOMLEY, Gregory, E.
IPC分类号： H04B7/08 , H04L25/03 , H04L1/06 , H01Q1/08 , H01Q1/24 , H04B1/38
CPC分类号： H04L1/06 , H04B7/0845 , H04L25/03006 , H04L25/067
摘要： A method for reducing interference combines soft symbols using existing processing devices. In particular, transmitted data signals are received over a plurality of paths. The received data signal includes an interference component. The received data signals are processed to provide a plurality of soft symbols that correspond to the transmitted data signal. The plurality of soft symbols are combined to reduce the interference component of the data signal and provided output signal that corresponds to the transmitted data signal. Accordingly, existing equalizers and combiners may be used to reduce interference. Related mobile user terminal and receivers are disclosed.

8. 发明授权

EP1172016B1 METHOD OF GENERATING CONTROL SIGNALS BASED ON LOCATION OF RADIO TERMINALS 有权
标题翻译：基于无线电终端位置生成控制信号的方法
公开(公告)号：EP1172016B1
公开(公告)日：2005-07-27
申请号：EP00919584.3
申请日：2000-03-23
申请人： Ericsson Inc.
发明人： IRVIN, David, R. , KHAYRALLAH, Ali, S.
IPC分类号： H04Q7/38
CPC分类号： H04W4/02 , H04W8/22 , H04W8/245 , H04W12/12 , H04W48/04
摘要： A method of generating a control signal to enable or inhibit a wide variety of applications is provided. The method generally includes the steps of determining the location of a first mobile radio terminal, determining the location of a second mobile radio terminal, comparing the locations of the terminals, and generating a control signal based upon the comparison. The control signal may be generated if the first and second mobile radio terminals are within a specified distance of one another. Alternatively, the control signal may be generated if the first and second mobile radio terminals are separated by at least a specified distance from one another. Additionally, the control signal may be generated if it is determined that the first mobile radio terminal is at a first specified location and the second mobile radio terminal is at a second specified location spacially separated from the first specified location. Further, the control signal may be generated if the first and second mobile radio terminals are at specified locations at a preselect time.
摘要翻译：提供了产生控制信号以启用或禁止各种各样的应用的方法。该方法通常包括以下步骤：确定第一移动无线电终端的位置;确定第二移动无线电终端的位置;比较终端的位置;以及基于比较产生控制信号。如果第一和第二移动无线电终端在彼此的指定距离内，则可以生成控制信号。可选地，如果第一和第二移动无线电终端彼此间隔至少指定的距离，则可以生成控制信号。此外，如果确定第一移动无线电终端位于第一指定位置并且第二移动无线电终端位于与第一指定位置空间分离的第二指定位置，则可以生成控制信号。此外，如果第一和第二移动无线电终端在预选时间处于指定位置，则可以生成控制信号。

9. 发明授权

EP1135908B8 ADAPTIVE CHANNEL CHARACTERIZATION USING DECODED SYMBOLS 有权
标题翻译：使用解码符号的自适应信道表征
公开(公告)号：EP1135908B8
公开(公告)日：2005-07-13
申请号：EP99973200.1
申请日：1999-09-14
申请人： Ericsson Inc.
发明人： KHAYRALLAH, Ali, S. , FULGHUM, Tracy
IPC分类号： H04L25/03 , H04L25/02 , H04L1/06 , H04B7/005
CPC分类号： H04L1/06 , H04B7/0845 , H04L25/0236
摘要： Methods and systems are provided for channel tracking utilizing multi-pass demodulation in which, during the second pass, decoded symbols are treated as known symbols which are used to calculate the error term used in updating the propagation characterization during the second pass. This allows a higher bandwidth to be used for updating the propagation characterization while known symbols are being processed. In particular, the propagation characterization may be provided by a channel tracker or a multi-antenna receiver, such as an interference rejection/combining (IRC) system, with an impairment correlation matrix estimator or a combination of both. Accordingly, the spatial diversity characteristics of the received signal (from IRC) and the temporal (or timing) characteristics (from the channel tracker) may both be tracked at different bandwidths for decoded and undecoded symbols to allow improved performance under fast changing channel conditions while maintaining desired performance characteristics while processing undecoded symbols.
摘要翻译：提供了利用多通解调的信道跟踪的方法和系统，其中在第二次通过期间，解码符号被视为用于计算在第二次通过期间更新传播特性中使用的误差项的已知符号。这允许在正在处理已知符号时使用更高的带宽来更新传播特性。特别地，传播特性可以由信道跟踪器或多天线接收机（诸如具有损害相关矩阵估计器或两者的组合的干扰抑制/组合（IRC）系统）提供。因此，对于已解码和未解码的符号，可以在不同的带宽下跟踪接收信号（来自IRC）的空间分集特性和来自信道跟踪器的时间（或定时）特性，以允许在快速改变的信道条件下改进性能，同时在处理未解码的符号时保持期望的性能特征。

10. 发明授权

EP0925661B1 A DECODING TECHNIQUE FOR TAIL BITING CODES 失效
标题翻译：解码程序“咬尾”码
公开(公告)号：EP0925661B1
公开(公告)日：2004-11-24
申请号：EP97938666.1
申请日：1997-09-08
申请人： Ericsson Inc.
发明人： KHAYRALLAH, Ali, S. , HASSAN, Amer
IPC分类号： H04L1/00 , H03M13/00
CPC分类号： H03M13/6502 , H03M13/4123 , H03M13/413 , H04L1/0054
摘要： A method for decoding encoded digital data. A decoder generates a replicated decoding trellis and performs some number Dmax of decoding operations using the replicated trellis. Each decoding pass is offset by some amount δ, and the results of each pass are stored and compared with prior results to generate a final output information sequence.

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