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公开(公告)号：US6044120A
公开(公告)日：2000-03-28
申请号：US850132
申请日：1997-05-01
申请人： Israel Bar-David , Glenn David Golden , Thomas Louis Marzetta , Nelson Ray Sollenberger , Jack Harriman Winters
发明人： Israel Bar-David , Glenn David Golden , Thomas Louis Marzetta , Nelson Ray Sollenberger , Jack Harriman Winters
IPC分类号： H04B7/08
CPC分类号： H04B7/0854
摘要： An apparatus for performance improvement of a digital wireless receiver comprises a processing circuit for processing a plurality of received signals and providing a processed signal, wherein a plurality of weights is applied to the plurality of received signals producing a plurality of weighted received signals. The plurality of weighted received signals are combined to provide the processed signal. A weight generation circuit generates the plurality of weights, wherein weights are generated so as to solve a minimization problem that penalizes excessive time variability in the weights.
摘要翻译： 一种用于数字无线接收机的性能改进的装置包括处理电路，用于处理多个接收信号并提供处理的信号，其中多个权重被应用于产生多个加权接收信号的多个接收信号。 多个加权接收信号被组合以提供经处理的信号。 权重生成电路生成多个权重，其中生成权重以便解决惩罚权重中的过多时间变化性的最小化问题。
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公开(公告)号：US6014413A
公开(公告)日：2000-01-11
申请号：US850896
申请日：1997-05-02
CPC分类号： H04L1/06 , H04B7/0851
摘要： A system and method for applying channel weights in a communication system are presented. The application of weights derived from a sample window is time-shifted into that sample window, decreasing the effects of channel variation and partially compensating for degradation due to differential detection.
摘要翻译： 提出了一种在通信系统中应用信道权重的系统和方法。 从样本窗口导出的权重的应用被时移到该采样窗口中，减少了信道变化的影响，并且部分补偿由差分检测引起的退化。
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公开(公告)号：US06278752B1
公开(公告)日：2001-08-21
申请号：US08850738
申请日：1997-05-02
IPC分类号： H04B110
摘要： A system and method for generating a coherent reference signal for extracting desired user signals from received signals even after error propagation is underway, are presented. A data symbol preceding a sequence whose relative phases are known is used as an absolute phase reference. Since errors in detection of the phase reference symbol are usually caused by error propagation already underway, the sequence can be used to reacquire the desired signal with merely an absolute phase shift in detected data, which allows accurate differential detection of the desired user signal even in the absence of absolute phase knowledge.
摘要翻译： 提出了即使在错误传播之后也产生用于从接收信号中提取所需用户信号的相干参考信号的系统和方法。 使用相对相位已知的序列之前的数据符号作为绝对相位参考。 由于相位参考符号的检测中的误差通常是由正在进行的误差传播引起的，所以该序列可用于仅在所检测的数据中用绝对相移来重新获取期望的信号，这允许精确的差分检测期望的用户信号，即使在 缺乏绝对阶段的知识。
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4.发明授权Output signal modification providing phase amplified information for soft decision decoding 失效输出信号修改提供用于软判决解码的相位放大信息
公开(公告)号：US6125152A
公开(公告)日：2000-09-26
申请号：US695492
申请日：1996-08-12
CPC分类号： H04B1/0007 , H04B1/0003 , H04B1/28 , H04B1/38 , H04B7/0854 , H04L1/06 , H04L27/22
摘要： An improvement of a digital wireless receiver comprises a processing circuit for processing a plurality of received signals, and providing a processed signal having an amplitude; and an adjusting circuit for adjusting the amplitude of the processed signal, the adjusting circuit coupled to the processing circuit, where the adjusting circuit adjusts the amplitude as a function of distortion of the plurality of received signals. The processing circuit can weight and combine the plurality of received signals. The distortion can be estimated from a squared error of the plurality of received signals, which can be averaged over a sliding window. The function can comprise multiplying the processed signal by square root of the averaged squared error. Such amplitude adjustment is useful to maintain the soft decision information for the processed signal that is fed to a base station having soft decision decoding, or can be used in the base station with soft decoding.
摘要翻译： 数字无线接收机的改进包括处理电路，用于处理多个接收信号，并提供具有振幅的处理信号; 以及用于调整处理信号的幅度的调整电路，调整电路耦合到处理电路，其中调整电路根据多个接收信号的失真调整幅度。 处理电路可以对多个接收信号进行加权和组合。 可以从多个接收信号的平方误差估计失真，其可以在滑动窗口上进行平均。 该功能可以包括将经处理的信号乘以平均平方误差的平方根。 这种幅度调整对于维持馈送到具有软判决解码的基站的处理信号的软判决信息是有用的，或者可以在具有软解码的基站中使用。
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5.发明授权Adaptive communication system and method using unequal weighting of interface and noise 失效自适应通信系统和方法使用接口和噪声的不平等权重
公开(公告)号：US5819168A
公开(公告)日：1998-10-06
申请号：US850027
申请日：1997-05-01
CPC分类号： H01Q3/2611 , H04B1/126 , H04B7/0865
摘要： A communication system and method, particularly adapted for use in adaptive antenna arrays, are presented. A plurality of signals containing a desired signal, interference, and noise are received through an array of antennas connected to a base receiving station. The signal arriving at each antenna is weighted according to computations which adjust those weights as a function of received interference and noise power in an unequal manner, based on the estimation accuracy of the interference and noise, which in turn depends on factors such as interference to noise power ratios and fading rate.
摘要翻译： 提出了一种特别适用于自适应天线阵列的通信系统和方法。 通过连接到基站接收站的天线阵列来接收包含所需信号，干扰和噪声的多个信号。 根据计算，根据干扰和噪声的估计精度，根据接收到的干扰和噪声功率的函数调整这些权重的计算来对每个天线的到达信号进行加权，反过来依赖于干扰和噪声的干扰 噪声功率比和衰落速率。
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6.发明授权Method and apparatus for enhanced 911 location using power control in a wireless system 有权在无线系统中使用功率控制来增强911位置的方法和装置公开(公告)号：US08174445B2
公开(公告)日：2012-05-08
申请号：US11293412
申请日：2005-12-02
IPC分类号： G01S1/24
CPC分类号： H04W52/283 , G01S5/02 , H04W4/02 , H04W4/90 , H04W8/18 , H04W52/367 , H04W52/50 , H04W76/50
摘要： Methods of selecting a transmitter power for a mobile telephone include receiving a telephone number and transmitting a control message associated with selection of a transmitter power if the telephone number meets a predetermined criterion. For example, if the telephone number is an emergency service number or number associated with a navigation assistance service, the control message is transmitted.
摘要翻译： 选择用于移动电话的发射机功率的方法包括：如果电话号码满足预定标准，则接收电话号码并发送与选择发射机功率相关联的控制消息。 例如，如果电话号码是与导航辅助服务相关联的紧急服务号码或号码，则发送控制消息。
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公开(公告)号：US08121022B2
公开(公告)日：2012-02-21
申请号：US12621335
申请日：2009-11-18
IPC分类号： H04J11/00
CPC分类号： H04L27/2601 , H04L1/0618
摘要： A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.
摘要翻译： MIMO OFDM系统包括用于对具有独立时空码的各个数据块进行编码的多个时空编码器。 经变换的数据块信号由多个发射天线发射并由多个接收天线接收。 接收的数据在最大似然检测之前被预先白化。 在一个实施例中，可以起诉连续的干扰消除以改善系统性能。 可以通过基于偏离平均值的信道脉冲响应估计来加权信道参数估计。
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公开(公告)号：US20100061484A1
公开(公告)日：2010-03-11
申请号：US12621335
申请日：2009-11-18
IPC分类号： H04L27/00
CPC分类号： H04L27/2601 , H04L1/0618
摘要： A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.
摘要翻译： MIMO OFDM系统包括用于对具有独立时空码的各个数据块进行编码的多个时空编码器。 经变换的数据块信号由多个发射天线发射并由多个接收天线接收。 接收的数据在最大似然检测之前被预先白化。 在一个实施例中，可以起诉连续的干扰消除以改善系统性能。 可以通过基于偏离平均值的信道脉冲响应估计来加权信道参数估计。
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公开(公告)号：US09426009B2
公开(公告)日：2016-08-23
申请号：US13296610
申请日：2011-11-15
CPC分类号： H04L27/2601 , H04L1/0618
摘要： A MIMO OFDM system includes a plurality of space-time encoders for encoding respective data blocks with independent space-time codes. The transformed data block signals are transmitted by a plurality of transmit antennas and received by a plurality of receive antennas. The received data is pre-whitened prior to maximum likelihood detection. In one embodiment, successive interference cancellation can be sued to improve system performance. Channel parameter estimation can be enhanced by weighting the channel impulse response estimates based upon a deviation from average.
摘要翻译： MIMO OFDM系统包括用于对具有独立时空码的各个数据块进行编码的多个时空编码器。 经变换的数据块信号由多个发射天线发射并由多个接收天线接收。 接收的数据在最大似然检测之前被预先白化。 在一个实施例中，可以起诉连续的干扰消除以改善系统性能。 可以通过基于偏离平均值的信道脉冲响应估计来加权信道参数估计。
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公开(公告)号：US20120140759A1
公开(公告)日：2012-06-07
申请号：US13372313
申请日：2012-02-13
CPC分类号： H04B1/0475 , H04B7/0413 , H04B7/0669 , H04L5/0023 , H04L27/2626 , H04L27/2647 , H04W88/08
摘要： A wireless multiple-input multiple output (MIMO) communication system includes signaling simulcasting. Base stations include a plurality of transmit antennas and terminals include a plurality of receive antennas to form MIMO channels. In one embodiment, a simulcasting MIMO wireless communication system includes orthogonal frequency division multiplexing (OFDM). This arrangement achieves the spectral efficiency advantages of OFDM and simulcasting.
摘要翻译： 无线多输入多输出（MIMO）通信系统包括信令同时广播。 基站包括多个发射天线，并且终端包括多个接收天线以形成MIMO信道。 在一个实施例中，同时广播的MIMO无线通信系统包括正交频分复用（OFDM）。 这种安排实现了OFDM和同时播送的频谱效率优势。
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