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51. 发明申请

WO2007001703A2 COMMUNICATIONS CHANNEL SYMBOL RECOVERY BY COMBINING OUTPUTS AT DIFFERENT DECISION DELAYS 审中-公开
标题翻译：在不同决策延迟下组合输出的通信通道符号恢复
公开(公告)号：WO2007001703A2
公开(公告)日：2007-01-04
申请号：PCT/US2006020259
申请日：2006-05-25
申请人： MOTOROLA INC , BACHU RAJA S , BUCKLEY MICHAEL E , STEWART KENNETH A , WILKINS CLINT S
发明人： BACHU RAJA S , BUCKLEY MICHAEL E , STEWART KENNETH A , WILKINS CLINT S
IPC分类号： H04L25/02 , H04B1/707 , H04L25/03 , H04L25/06
CPC分类号： H04L25/067 , H04B1/7117 , H04B1/712 , H04L25/0224 , H04L25/03197
摘要： A method and apparatus for communications channel symbol recovery that improves equalizer performance adds together the log-likelihood ratios (LLRs) of different decision delays rather than using LLRs corresponding only to a single decision delay. A low complexity method comprises, determining an initial coarse delay and a set of fine delays (1003), estimating a training sequence and filter taps set for each fine delay (1007), determining an error function for each fine delay (1009), and linearly combining the filter taps (1013) for determining the symbol estimates (1017).
摘要翻译：用于提高均衡器性能的用于通信信道符号恢复的方法和装置将不同决策延迟的对数似然比（LLR）加在一起，而不是仅使用对应于单个判决延迟的LLR。低复杂度方法包括：确定初始粗延迟和一组精细延迟（1003），估计每个精细延迟（1007）设置的训练序列和滤波器抽头，确定每个精细延迟（1009）的误差函数，以及线性组合用于确定符号估计的滤波器抽头（1013）（1017）。

52. 发明申请

WO2005043927A2 METHOD FOR MODULATION DETECTION 审中-公开
标题翻译：调制检测方法
公开(公告)号：WO2005043927A2
公开(公告)日：2005-05-12
申请号：PCT/US2004031128
申请日：2004-09-23
申请人： MOTOROLA INC , STEWART KENNETH A , BACHU RAJA S , BUCKLEY MICHAEL E , WILKINS CLINT S
发明人： STEWART KENNETH A , BACHU RAJA S , BUCKLEY MICHAEL E , WILKINS CLINT S
IPC分类号： H04L27/00 , H04Q
CPC分类号： H04L27/0012
摘要： A method of modulation detection. A signal is received (710). A first decision statistic can be generated based on the received signal (720). The received signal can be transformed (725). A second decision statistic can be generated based on the transformed received signal (735). A selected modulation type can be determined based on comparing the first decision statistic with the second decision statistic (740).
摘要翻译：调制检测方法。接收到信号（710）。可以基于接收到的信号来生成第一判定统计量（720）。接收到的信号可以被转换（725）。可以基于变换的接收信号来生成第二判定统计量（735）。可以基于将第一判定统计量与第二判定统计量进行比较来确定选择的调制类型（740）。

53. 发明申请

WO2004073185A3 REDUCING INTERFERENCE IN A GSM COMMUNICATION SYSTEM 审中-公开
标题翻译：减少GSM通信系统中的干扰
公开(公告)号：WO2004073185A3
公开(公告)日：2004-12-23
申请号：PCT/US2004004424
申请日：2004-02-11
申请人： MOTOROLA INC , BUCKLEY MICHAEL E , BACHU RAJA S , STEWART KENNETH A , WILKINS CLINT S
发明人： BUCKLEY MICHAEL E , BACHU RAJA S , STEWART KENNETH A , WILKINS CLINT S
IPC分类号： H04L25/02 , H04L25/03 , H04B1/10
CPC分类号： H04L25/0244 , H04L25/0224 , H04L27/2017 , H04L2025/03407 , H04L2025/03414
摘要： A method for reducing interference in a desired signal in a GSM communication system uses a finite-impulse-response filter for alternate linear equalization. The method includes a first step (300) of inputting a burst of data of a received waveform including interference from a channel of the communication system. A next step (302) includes training the finite-impulse-response filter with a set of symbols of specific quadrature phase, known a priori, in the burst of data of the received waveform. For example known real only and imaginary only symbols are alternatively selected from a midamble of the data burst. A next step (304) includes operating on the received waveform with the finite-impulse-response filter to alternately linearly equalize the burst of data to provide an estimate of the desired signal.
摘要翻译：用于减少GSM通信系统中的期望信号的干扰的方法使用有限脉冲响应滤波器进行交替的线性均衡。该方法包括：输入包括来自通信系统的信道的干扰的接收波形的数据的突发的第一步骤（300）。下一步骤（302）包括在接收波形的数据脉冲串中先验已知的具有特定正交相位的一组符号来训练有限脉冲响应滤波器。例如，可以从数据脉冲串的中同步码中选择已知的仅实际和仅虚拟符号。下一步骤（304）包括利用有限脉冲响应滤波器对接收到的波形进行操作，以交替地线性均衡数据突发以提供期望信号的估计。

54. 发明申请

WO2013003717A2 EVOLVED DISTRIBUTED ANTENNA SYSTEM 审中-公开
标题翻译： EVOLVED分布式天线系统
公开(公告)号：WO2013003717A2
公开(公告)日：2013-01-03
申请号：PCT/US2012044916
申请日：2012-06-29
申请人： LGC WIRELESS LLC , STEWART KENNETH A , FISCHER LARRY G
发明人： STEWART KENNETH A , FISCHER LARRY G
CPC分类号： H04B7/024 , H04B7/022 , H04B7/0691 , H04B7/0874 , H04W88/085
摘要： One embodiment is directed to a distributed antenna system (DAS) including a host unit and a plurality of remote units. The host unit includes a plurality of base transceiver stations and a switch. Each of the base transceiver stations is configured to provide a downstream baseband digital signal to the switch and to receive an upstream baseband digital signal from the switch, wherein each downstream baseband digital signal and upstream baseband digital signal is a digital representation of the RF channel at baseband of the respective base transceiver station. The switch is configured to route each of the downstream baseband digital signals to a respective subset of the remote units as one or more downstream serial data streams and to route each of the upstream baseband digital signals from one or more upstream serial data streams to a respective subset of the base transceiver stations.
摘要翻译：一个实施例涉及包括主机单元和多个远程单元的分布式天线系统（DAS）。主机单元包括多个基站收发台和交换机。每个基站收发台被配置为向交换机提供下行基带数字信号并从交换机接收上行基带数字信号，其中每个下行基带数字信号和上行基带数字信号是RF信道的数字表示各个基站的基带。交换机被配置为将每个下游基带数字信号路由到远程单元的相应子集作为一个或多个下游串行数据流，并将每个上游基带数字信号从一个或多个上游串行数据流路由到相应的基站收发台的子集。

55. 发明申请

WO2012174047A3 DISTRIBUTED ANTENNA SYSTEM ARCHITECTURES 审中-公开
标题翻译：分布式天线系统架构
公开(公告)号：WO2012174047A3
公开(公告)日：2013-04-11
申请号：PCT/US2012042148
申请日：2012-06-13
申请人： LGC WIRELESS LLC , STEWART KENNETH A , FISCHER LARRY G
发明人： STEWART KENNETH A , FISCHER LARRY G
IPC分类号： H04B7/06 , H04L25/03
CPC分类号： H03F1/3247 , H04B1/525 , H04L5/1423 , H04L25/03343
摘要： One embodiment is directed to a distributed antenna system comprising a host unit and at least one remote antenna unit that is communicatively coupled to the host unit. The host unit is configured to communicate a downstream transport signal from the host unit to the remote antenna unit. The remote antenna unit to which the downstream transport signal is communicated uses the downstream transport signal to generate a downstream radio frequency signal for radiation from an antenna associated with the remote antenna unit. The remote antenna unit is configured to communicate an upstream transport signal from the remote antenna unit to the host unit, wherein the upstream transport signal is generated from a received upstream radio frequency signal received at the remote antenna unit. The remote antenna unit is configured to perform self-interference suppression processing in an upstream signal path using, as an input thereto, a feedback signal derived from the downstream radio frequency signal radiated from the antenna. Other embodiments are disclosed.
摘要翻译：一个实施例涉及一种分布式天线系统，其包括主机单元和通信地耦合到主机单元的至少一个远程天线单元。主机单元被配置为将来自主机单元的下行传输信号传送到远程天线单元。下行传输信号被传送到的远程天线单元使用下游传输信号来产生用于来自与远程天线单元相关联的天线的辐射的下行射频信号。所述远程天线单元被配置为将来自所述远程天线单元的上行传输信号传送到所述主机单元，其中所述上行传输信号是从在所述远程天线单元处接收到的接收的上行无线电频率信号产生的。远程天线单元被配置为使用从天线辐射的下行射频信号导出的反馈信号作为其输入，在上行信号路径中执行自干扰抑制处理。公开了其他实施例。

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