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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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公开(公告)号：US5887037A
公开(公告)日：1999-03-23
申请号：US606777
申请日：1996-02-27
CPC分类号： H04L1/06 , H04B7/0851
摘要： An apparatus for performance improvement of a burst mode digital wireless receiver has a processing circuit for processing a plurality of received signals and providing a processed signal and a delay circuit for introducing a predetermined delay to the processed signal. The delay circuit is coupled to the processing circuit. The predetermined delay is such that the processed signal is delayed to correspond with a later data burst. The processing circuit weights and combines the received signals, where the processing circuit reduces a mean squared error of an output signal. The processing circuit weights and combines the received signals using a predetermined symbol pattern within a sync sequence within a time slot.
摘要翻译： 用于突发模式数字无线接收机的性能改进的装置具有用于处理多个接收信号并提供经处理的信号的处理电路和用于向经处理的信号引入预定延迟的延迟电路。 延迟电路耦合到处理电路。 预定的延迟使得经处理的信号被延迟以与稍后的数据突发相对应。 处理电路对接收到的信号进行加权和组合，其中处理电路减小输出信号的均方误差。 处理电路使用在时隙内的同步序列内的预定符号模式对接收的信号进行加权和组合。
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4.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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公开(公告)号：US6038272A
公开(公告)日：2000-03-14
申请号：US716659
申请日：1996-09-06
CPC分类号： H04B1/0003 , H04B1/0007 , H04B1/28 , H04B1/38 , H04B7/0851 , H04L1/06 , H04L27/22
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 where the received signals are multiplied by weights and combined; and a weight generation circuit for generating the weights; wherein the received signals are sampled at a multiple of a symbol rate, different weights for each set of samples at a symbol rate are generated and the weights are selected to optimize performance.
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，并提供经处理的信号，其中接收信号乘以权重并进行组合; 以及用于产生所述重物的重量产生电路; 其中以符号速率的倍数对接收的信号进行采样，生成符号率下的每组采样的不同权重，并选择权重以优化性能。
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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：US6147985A
公开(公告)日：2000-11-14
申请号：US848945
申请日：1997-05-01
CPC分类号： H04B7/0848 , H04B1/126
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 based on a given number of interferers.
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。 权重产生电路产生多个权重，其中权重基于给定数量的干扰源。
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8.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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9.发明授权Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver 有权无线通信系统具有在发射机和接收机两端采用多单元天线的时空架构公开(公告)号：US06763073B2
公开(公告)日：2004-07-13
申请号：US09882120
申请日：2001-06-15
IPC分类号： H04L2728
CPC分类号： H04B7/204 , H01Q3/2611 , H04L1/0618
摘要： The bit rate at which a digital wireless communications system communicates data in scattering environments may be significantly increased by using multiple antennas at both the transmitter and receiver and by decomposing the channel into m subchannels. In the same frequency band, m one dimensional signals are transmitted into a scattering environment which makes these transmitted signals appear spatially independent at the receiver antenna array. The high bit rate is enabled by special receiver processing to maximize the minimum signal-to-noise ratio of the receiver detection process.
摘要翻译： 数字无线通信系统在散射环境中传送数据的比特率可以通过在发射机和接收机两者处使用多个天线以及将信道分解成m个子信道来显着增加。 在相同的频带中，一维信号被传输到散射环境中，这使得这些发射信号在接收机天线阵列处看起来在空间上独立。 通过专门的接收机处理来实现高比特率以最大化接收机检测过程的最小信噪比。
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10.发明授权Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver 失效无线通信系统具有在发射机和接收机两端采用多单元天线的时空架构公开(公告)号：US06317466B1
公开(公告)日：2001-11-13
申请号：US09060657
申请日：1998-04-15
IPC分类号： H04B110
CPC分类号： H04B7/204 , H01Q3/2611 , H04L1/0618
摘要： The bit rate at which a digital wireless communications system communicates data in scattering environments may be significantly increased by using multiple antennas at both the transmitter and receiver and by decomposing the channel into m subchannels. In the same frequency band, m one dimensional signals are transmitted into a scattering environment which makes these transmitted signals appear spatially independent at the receive antenna array. The high bit rate is enabled by special receiver processing to maximize the minimum signal-to-noise ratio of the receiver detection process.
摘要翻译： 数字无线通信系统在散射环境中传送数据的比特率可以通过在发射机和接收机两者处使用多个天线以及将信道分解成m个子信道来显着增加。 在相同的频带中，一维信号被传输到散射环境中，这使得这些发射信号在接收天线阵列处看起来在空间上独立。 通过专门的接收机处理来实现高比特率以最大化接收机检测过程的最小信噪比。
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