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公开(公告)号：US20080304586A1
公开(公告)日：2008-12-11
申请号：US11760285
申请日：2007-06-08
申请人： Karl Molnar
发明人： Karl Molnar
CPC分类号： H04L25/0212 , H04B1/7105 , H04B1/7115 , H04B2201/709727 , H04L25/0204
摘要： RAKE-based receivers utilize lattice reduction for improving symbol estimation accuracy. Channel response estimates and received signal streams are transformed from a constellation lattice basis to an integer lattice basis to increase the orthogonality of symbol estimation decision regions. In one embodiment, received signal streams are processed by generating despread signal samples from received signal streams transmitted using different spreading codes. Channel response associated with the different received signal streams is estimated and transformed from a first lattice basis to a second lattice basis having greater orthogonality between decision regions than the first lattice basis. The despread signal samples are aligned to the second lattice and combining weights generated based on the transformed channel response estimate. Symbol estimation decision statistics are generated based on the combining weights and the aligned despread signal samples. Soft bit values are generated for decoding based on the symbol estimation decision statistics.
摘要翻译： 基于RAKE的接收机利用晶格简化来提高符号估计精度。 信道响应估计和接收信号流从星座晶格转换为整数格基，以增加符号估计决定区域的正交性。 在一个实施例中，通过从使用不同扩展码发送的接收信号流中产生解扩信号样本来处理接收信号流。 与不同的接收信号流相关联的信道响应被估计并从第一格子基变换到具有比第一格子基的判定区之间更大的正交性的第二格基。 解扩信号样本与第二晶格对准，并且基于经变换的信道响应估计产生的组合权重。 基于组合权重和对准的解扩展信号样本生成符号估计判定统计量。 生成用于基于符号估计判定统计的解码的软比特值。
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32.发明授权Method and apparatus for digital symbol detection using medium response estimates 有权使用介质响应估计的数字符号检测方法和装置公开(公告)号：US06252918B1
公开(公告)日：2001-06-26
申请号：US09267378
申请日：1999-03-15
IPC分类号： H04B110
CPC分类号： H04B1/707 , H04B7/005 , H04L25/0202 , H04L25/03178 , H04L25/03299
摘要： According to the present invention, the effects of the transmission medium on transmitted information symbols are estimated separately from other effects, e.g., those associated with receive and transmit filters, using knowledge of the pulse shaping. The medium response estimate is then used to detect information symbols. Previously, receivers had used estimates of the composite channel to detect symbols. This, however, assumed uncorrelated noise, which is not always the case.
摘要翻译： 根据本发明，利用脉冲整形的知识，传输介质对所发送的信息符号的影响与其他效果（例如与接收和发射滤波器相关的效果）分开估计。 然后使用介质响应估计来检测信息符号。 以前，接收机已经使用复合信道的估计来检测符号。 然而，这是假设不相关的噪音，并不总是这样。
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公开(公告)号：US6134286A
公开(公告)日：2000-10-17
申请号：US950134
申请日：1997-10-14
申请人： Sandeep Chennakeshu , Karl Molnar
发明人： Sandeep Chennakeshu , Karl Molnar
IPC分类号： H04L27/22 , H04L7/00 , H04L7/04 , H04L7/08 , H04L27/233
CPC分类号： H04L27/2332 , H04L7/042
摘要： A method and apparatus for synchronizing and demodulating radio wave signals transmitted in frame format with an unique word, involving correcting the frequency offset of the received signal and differentially correlating the frequency corrected signal with the unique word, A first timing estimate is further refined by a 2-D search between frequency and time and a first frequency estimate is further refined by quadratic interpolation. The finely synchronized signal is demodulated using a Viterbi-based demodulator.
摘要翻译： 一种方法和装置，用于以唯一字同步和解调以帧格式发射的无线电波信号，涉及校正接收信号的频率偏移并将频率校正信号与唯一字差分相关。第一定时估计进一步由 通过二次插值进一步改进频率和时间之间的二维搜索和第一频率估计。 精细同步的信号使用基于维特比的解调器进行解调。
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公开(公告)号：US08682326B2
公开(公告)日：2014-03-25
申请号：US12342510
申请日：2008-12-23
申请人： Bo Hagerman , Karl Molnar
发明人： Bo Hagerman , Karl Molnar
IPC分类号： H04W36/00
CPC分类号： H04W16/28 , H01Q1/246 , H01Q3/04 , H01Q3/08 , H04L1/0026 , H04L1/1812 , H04W36/00 , H04W72/085 , H04W72/1231 , H04W88/08
摘要： A base station and method are described herein that vertically sweeps an antenna beam within a cell to improve the signal quality at scheduled times for a user terminal located within a coverage area of the cell. In one embodiment, the method improves a signal quality for a user terminal by: (a) vertically sweeping a beam within a cell coverage area to vary a signal quality at scheduled times for the user terminal located within the cell coverage area; and (b) performing one or more scheduling functions while taking into account variations in the vertical sweep of the antenna beam. For instance, the scheduling function(s) can include a link adaptation function, a resource allocation function, a user admittance/dropping function, a handover function, and/or a hybrid automatic repeat request function.
摘要翻译： 这里描述了一种基站和方法，其垂直扫描小区内的天线波束，以便在位于小区的覆盖区域内的用户终端的调度时间改善信号质量。 在一个实施例中，该方法通过以下步骤来改善用户终端的信号质量：（a）垂直扫描小区覆盖区域内的波束，以在位于小区覆盖区域内的用户终端的调度时间改变信号质量; 和（b）在考虑天线波束的垂直扫描的变化的同时执行一个或多个调度功能。 例如，调度功能可以包括链路适配功能，资源分配功能，用户导纳/删除功能，切换功能和/或混合自动重传请求功能。
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公开(公告)号：US20110081871A1
公开(公告)日：2011-04-07
申请号：US12572415
申请日：2009-10-02
申请人： Karl Molnar
发明人： Karl Molnar
CPC分类号： H04W72/082 , H04B17/24 , H04B17/345 , H04L1/0007 , H04L1/0026 , H04L1/20 , H04W24/08
摘要： A mobile terminal measures interference over multiple measurement periods and generates interference probability data based on the statistical distribution of the interference measured. The interference probability data may describe, for example, the probability of each possible level of interference expected at the mobile terminal. The mobile terminal derives channel quality information as feedback to a base station based on this interference probability data (e.g., when noise at the mobile terminal falls below a threshold). In one embodiment, the mobile terminal does so by estimating from the interference probability data the probability of successfully receiving a transmission if certain feedback information is reported. Derived in this way, the feedback information more reliably indicates interference likely present at the mobile terminal when the base station sends the transmission. Accordingly, the base station controls the transmission based on the feedback information, and in some embodiments, also based on the interference probability data.
摘要翻译： 移动终端在多个测量周期内测量干扰，并根据所测量的干扰的统计分布产生干扰概率数据。 干扰概率数据可以例如描述在移动终端处预期的每个可能的干扰水平的概率。 移动终端基于该干扰概率数据（例如，当移动终端处的噪声低于阈值时）将信道质量信息作为对基站的反馈导出。 在一个实施例中，移动终端通过根据干扰概率数据估计在报告某些反馈信息时成功接收传输的概率来做到这一点。 以这种方式，反馈信息更可靠地指示当基站发送传输时可能存在于移动终端的干扰。 因此，基站基于反馈信息来控制传输，并且在一些实施例中也基于干扰概率数据来控制传输。
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36.发明授权Cellular positioning system that compensates for received signal delays in positioning radio receivers 失效蜂窝定位系统，用于补偿定位无线电接收机中的接收信号延迟公开(公告)号：US06518921B1
公开(公告)日：2003-02-11
申请号：US08838027
申请日：1997-04-22
申请人： David R. Irvin , Rajaram Ramesh , Karl Molnar
发明人： David R. Irvin , Rajaram Ramesh , Karl Molnar
IPC分类号： G01S124
摘要： A positioning system locates a mobile unit by compensating for component tolerances in time-of-arrivals of received signals at a plurality of positioning radio receivers. The system determines detection times of the received radio signals at the positioning radio receivers. The system takes into account pre-stored signal delays associated with one or more receiver stages of the corresponding positioning radio receivers and the detection times, for determining time-of-arrivals for the received radio signals.
摘要翻译： 定位系统通过在多个定位无线电接收机处补偿接收到的信号的到达时间内的组件容差来定位移动单元。 该系统确定定位无线电接收机处接收的无线电信号的检测时间。 该系统考虑与相应的定位无线电接收机的一个或多个接收机级相关联的预先存储的信号延迟和检测时间，用于确定接收到的无线电信号的到达时间。
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37.发明授权Systems and methods for locating remote terminals in radiocommunication systems 失效用于定位无线电通信系统中的远程终端的系统和方法
公开(公告)号：US6040800A
公开(公告)日：2000-03-21
申请号：US839864
申请日：1997-04-22
CPC分类号： G01S5/14 , G01S5/06 , H04W4/22 , H04W76/007
摘要： Emergency call handling may, in the near future, require terminal unit location information to be provided to emergency service centers. Exemplary embodiments of the present invention provide improved techniques for using a system of monitoring or adjunct stations to provide this location information to the emergency service centers. For example, either time of arrival (TOA) or time difference of arrival (TDOA) techniques can be selectively used to process received signals and provide location information. Techniques for improving timing estimates are also disclosed.
摘要翻译： 在不久的将来，紧急呼叫处理可能需要向紧急服务中心提供终端单元位置信息。 本发明的示例性实施例提供了使用监控系统或附加站的改进技术来向紧急服务中心提供该位置信息。 例如，可以有选择地使用到达时间（TOA）或到达时差（TDOA）技术来处理接收到的信号并提供位置信息。 还公开了用于改善时序估计的技术。
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公开(公告)号：US5889827A
公开(公告)日：1999-03-30
申请号：US766167
申请日：1996-12-12
CPC分类号： H04B1/707 , H04B7/005 , H04L25/0202 , H04L25/03178 , H04L25/03299
摘要： According to the present invention, the effects of the transmission medium on transmitted information symbols are estimated separately from other effects, e.g., those associated with receive and transmit filters, using knowledge of the pulse shaping. The medium response estimate is then used to detect information symbols. Previously, receivers had used estimates of the composite channel to detect symbols. This, however, assumed uncorrelated noise, which is not always the case.
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39.发明授权Base station and method for improving coverage in a wireless communication system using antenna beam-jitter and CQI correction 有权使用天线波束抖动和CQI校正来提高无线通信系统中覆盖范围的基站和方法公开(公告)号：US08200286B2
公开(公告)日：2012-06-12
申请号：US12262724
申请日：2008-10-31
申请人： Karl Molnar , Bo Hagerman
发明人： Karl Molnar , Bo Hagerman
IPC分类号： H04M1/00
CPC分类号： H04B7/0408 , H01Q1/246 , H01Q3/26 , H04B7/0632 , H04W16/28 , H04W72/046
摘要： A base station and method are described herein that improves the coverage in a fixed-beam wireless communication system by using antenna beam-jitter and Channel Quality Information (CQI) correction. In one embodiment, the method includes the steps of: (a) modifying a beam by introducing a beam-jitter in a beam-forming pattern; (b) receiving an estimated channel quality information, CQI, from a user terminal; (c) accounting for effects of the beam-jitter on the estimated CQI to obtain a jitter-adjusted CQI estimate; (d) and using the jitter-adjusted CQI estimate during user scheduling for a future transmission to the user terminal.
摘要翻译： 本文描述了通过使用天线波束抖动和信道质量信息（CQI）校正来改进固定波束无线通信系统中的覆盖范围的基站和方法。 在一个实施例中，该方法包括以下步骤：（a）通过在波束形成模式中引入波束抖动来修改波束; （b）从用户终端接收估计的信道质量信息CQI; （c）考虑波束抖动对估计的CQI的影响以获得抖动调整的CQI估计; （d），并且在用户调度期间使用抖动调整后的CQI估计，以便将来传输到用户终端。
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40.发明授权Method and apparatus for digital symbol detection using medium response estimates 有权使用介质响应估计的数字符号检测方法和装置公开(公告)号：US06603827B2
公开(公告)日：2003-08-05
申请号：US09769995
申请日：2001-01-25
IPC分类号： H04B169
CPC分类号： H04B1/707 , H04B7/005 , H04L25/0202 , H04L25/03178 , H04L25/03299
摘要： According to the present invention, the effects of the transmission medium on transmitted information symbols are estimated separately from other effects, e.g., those associated with receive and transmit filters, using knowledge of the pulse shaping. The medium response estimate is then used to detect information symbols. Previously, receivers had used estimates of the composite channel to detect symbols. This, however, assumed uncorrelated noise, which is not always the case.
摘要翻译： 根据本发明，利用脉冲整形的知识，传输介质对所发送的信息符号的影响与其他效果（例如与接收和发射滤波器相关的效果）分开估计。 然后使用介质响应估计来检测信息符号。 以前，接收机已经使用复合信道的估计来检测符号。 然而，这是假设不相关的噪音，并不总是这样。
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