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1. 发明申请

US20110228710A1 INTERFERENCE CANCELLATION IN A SPREAD SPECTRUM COMMUNICATION SYSTEM 审中-公开
标题翻译：传播频谱通信系统中的干扰消除
公开(公告)号：US20110228710A1
公开(公告)日：2011-09-22
申请号：US13117233
申请日：2011-05-27
申请人： David K. Mesecher , Alexander Reznik , Donald M. Grieco , Gary Cheung
发明人： David K. Mesecher , Alexander Reznik , Donald M. Grieco , Gary Cheung
IPC分类号： H04W88/08 , H04J3/00 , H04J1/00 , H04W88/02
CPC分类号： H04B1/7103 , H04B1/7097 , H04B1/712 , H04B7/0613 , H04B7/0615 , H04B7/0619 , H04B7/0634 , H04B7/0678 , H04B7/0845 , H04B7/0854 , H04B7/0857 , H04B7/0891 , H04B2201/70701 , H04J13/0003
摘要： A code division multiple access communication system transmits a pilot and traffic signal over a shared spectrum. The pilot and traffic signal have an associated code and are received over the shared spectrum. The received signals are sampled and the samples are delayed to produce a window. A weighted value for each despread pilot code window sample is determined using an adaptive algorithm. Each window sample is despread with a traffic code. Each despread traffic code window sample is weighted according to a weight corresponding to its respective pilot code sample.
摘要翻译：码分多址通信系统通过共享频谱发送导频和业务信号。导频和业务信号具有相关代码，并通过共享频谱接收。接收到的信号被采样，样品被延迟以产生窗口。使用自适应算法确定每个解扩导频码窗口样本的加权值。每个窗口样本都使用流量代码进行解扩。每个去扩展的交通码窗口样本根据与其各自的导频码样本相对应的权重进行加权。

2. 发明授权

US07949037B2 Base station for carrier offset recovery 有权
标题翻译：用于载波偏移恢复的基站
公开(公告)号：US07949037B2
公开(公告)日：2011-05-24
申请号：US11532589
申请日：2006-09-18
申请人： Fatih M Ozluturk , David K Mesecher , Alexander M Jacques
发明人： Fatih M Ozluturk , David K Mesecher , Alexander M Jacques
IPC分类号： H04B1/00
CPC分类号： H04B1/7085 , H04B1/30 , H04B1/707 , H04B1/70755 , H04B1/7093 , H04B1/7115 , H04B2201/70701 , H04L25/0212 , H04L27/0014 , H04L2027/0067
摘要： A base station for carrier offset recovery. An adaptive matched filter produces a filtered signal. A rake receiver provides relative path values of multipath components. A mixer generates channel impulse response estimates. A channel despreader despreads the filtered signal using the pseudo-noise signal generated to produce a despread channel signal of the selected channel. A pilot channel despreader despreads the filtered signal using a pseudo-noise signal generator to produce a despread pilot signal of the pilot channel. A hard decision processor determines a symbol value of the despread channel signal. A complex conjugate processor generates a complex conjugate of the symbol value as a correction signal. A phase-locked loop produces a phase correction signal to recover carrier offset.
摘要翻译：用于载波偏移恢复的基站。自适应匹配滤波器产生滤波信号。耙式接收器提供多径分量的相对路径值。混频器产生信道脉冲响应估计。信道去扩展器使用所生成的伪噪声信号来对经滤波的信号进行解扩，以产生所选信道的解扩频道信号。导频信道解扩器使用伪噪声信号发生器对经滤波的信号进行解扩，以产生导频信道的解扩导频信号。硬决策处理器确定解扩频道信号的符号值。复共轭处理器产生符号值的复共轭作为校正信号。锁相环产生相位校正信号以恢复载波偏移。

3. 发明授权

US07519395B2 Adaptive cancellation of fixed interferers 失效
标题翻译：固定干扰源的自适应消除
公开(公告)号：US07519395B2
公开(公告)日：2009-04-14
申请号：US11204883
申请日：2005-08-16
申请人： David K. Mesecher , Fatih Ozluturk
发明人： David K. Mesecher , Fatih Ozluturk
IPC分类号： H04B1/38
CPC分类号： H04B1/126 , H01Q1/246 , H01Q3/2629
摘要： An improved base station which cancels the effects of known fixed interference sources produces a signal substantially free from the interference sources thereby increasing total channel capacity. The adaptive interference canceller base station includes a main antenna for receiving signals from other communication stations and at least one directional antenna directed toward an interference source. The main and directional antennas are coupled together such that an output signal substantially free from the interference is generated.
摘要翻译：一种改进的基站，其消除已知固定干扰源的影响并且产生基本上不受干扰源的信号，从而增加总信道容量。自适应干扰消除器基站包括用于从其他通信站接收信号的主天线和指向干扰源的至少一个定向天线。主和定向天线耦合在一起，使得产生基本上不受干扰的输出信号。

4. 发明授权

US06748008B2 Base station for distance determination 有权
标题翻译：基站距离测定
公开(公告)号：US06748008B2
公开(公告)日：2004-06-08
申请号：US10074398
申请日：2002-02-12
申请人： David K. Mesecher
发明人： David K. Mesecher
IPC分类号： H04B1500
CPC分类号： H04W64/00 , G01S5/0215 , G01S5/12
摘要： A base station transmits a first spread spectrum signal having a first code. It receives and analyzes an impulse response of multipath components of a second spread spectrum signal having a second code to determine a first received component. The second signal is time synchronized with the first spread spectrum signal. A distance determination is made based on in part a timing difference between the second code of the received second signal and the first code of the base station's transmitted first signal and the determined first received components for that base station's received second signal.
摘要翻译：基站发送具有第一码的第一扩频信号。它接收并分析具有第二码的第二扩频信号的多径分量的脉冲响应，以确定第一接收分量。第二信号与第一扩频信号时间同步。基于部分地基于接收到的第二信号的第二代码与基站发送的第一信号的第一代码和所确定的基站接收的第二信号的第一接收分量之间的定时差进行距离确定。

5. 发明授权

US06278726B1 Interference cancellation in a spread spectrum communication system 有权
标题翻译：扩频通信系统中的干扰消除
公开(公告)号：US06278726B1
公开(公告)日：2001-08-21
申请号：US09659858
申请日：2000-09-11
申请人： David K. Mesecher , Alexander Reznik , Donald Grieco , Gary Cheung
发明人： David K. Mesecher , Alexander Reznik , Donald Grieco , Gary Cheung
IPC分类号： H04B1707
CPC分类号： H04B1/7103 , H04B1/7097 , H04B1/712 , H04B7/0613 , H04B7/0615 , H04B7/0619 , H04B7/0634 , H04B7/0678 , H04B7/0845 , H04B7/0854 , H04B7/0857 , H04B7/0891 , H04B2201/70701 , H04J13/0003
摘要： A transmitter transmits a spread spectrum pilot and data signal. Each signal has an associated chip code. A receiver receives the transmitted pilot and data signal. The received pilot signal is filtered using the pilot chip code and weights are determined for components of the received pilot signal using an adaptive algorithm. The received data signal is weighted by the determined weights and filtered with the data signal chip code to recover data from the received data signal.
摘要翻译：发射机发射扩频导频和数据信号。每个信号都有相关的芯片代码。接收机接收发送的导频和数据信号。使用导频芯片码对接收的导频信号进行滤波，并使用自适应算法确定接收到的导频信号的分量的权重。接收到的数据信号通过确定的权重进行加权，并用数据信号芯片代码进行滤波，以从接收到的数据信号中恢复数据。

6. 发明授权

US10705176B2 Signal direction processing for an antenna array 有权
公开(公告)号：US10705176B2
公开(公告)日：2020-07-07
申请号：US14882034
申请日：2015-10-13
申请人： David K. Mesecher
发明人： David K. Mesecher
IPC分类号： G01S3/32 , G01S3/46 , H04B7/08 , H01Q3/26 , H04K3/00
摘要： Systems and methods are provided for determining a direction of a signal received at an antenna array. An antenna array includes a plurality of antenna elements, including a reference element. A signal combiner element is configured to combine weighted signals from a subset of the plurality of antenna elements to provide a composite output. An adaptive processing component is configured to determine an optimal set of weights for the subset of the plurality of antenna elements. An angle of arrival search component is configured to find a direction of minimum gain given the optimal set of weights.

7. 发明授权

US09036680B2 Interference cancellation in a spread spectrum communication system 有权
公开(公告)号：US09036680B2
公开(公告)日：2015-05-19
申请号：US13117233
申请日：2011-05-27
申请人： David K. Mesecher , Alexander Reznik , Donald M. Grieco , Gary Cheung
发明人： David K. Mesecher , Alexander Reznik , Donald M. Grieco , Gary Cheung
IPC分类号： H04B1/00 , H04B7/06 , H04B1/7097 , H04B1/712 , H04J13/00 , H04B7/08
CPC分类号： H04B1/7103 , H04B1/7097 , H04B1/712 , H04B7/0613 , H04B7/0615 , H04B7/0619 , H04B7/0634 , H04B7/0678 , H04B7/0845 , H04B7/0854 , H04B7/0857 , H04B7/0891 , H04B2201/70701 , H04J13/0003
摘要： A code division multiple access communication system transmits a pilot and traffic signal over a shared spectrum. The pilot and traffic signal have an associated code and are received over the shared spectrum. The received signals are sampled and the samples are delayed to produce a window. A weighted value for each despread pilot code window sample is determined using an adaptive algorithm. Each window sample is despread with a traffic code. Each despread traffic code window sample is weighted according to a weight corresponding to its respective pilot code sample.

8. 发明申请

US20110151923A1 HIGH-PERFORMANCE CELLULAR TELEPHONE RECEIVER 有权
标题翻译：高性能蜂窝电话接收机
公开(公告)号：US20110151923A1
公开(公告)日：2011-06-23
申请号：US12645683
申请日：2009-12-23
申请人： David K. Mesecher
发明人： David K. Mesecher
IPC分类号： H04B1/10 , H04M1/00 , H04L27/00 , H04L1/02 , H04B7/10
CPC分类号： H04B7/086 , H04L25/0204 , H04L25/0226 , H04L25/03343 , H04L2025/03426 , H04L2025/03783
摘要： A receiver includes a plurality of antennas; a plurality of front end circuits producing digital signals in response to signals received on the antennas; a beamforming unit weighting and summing the digital signals to produce a first signal; a first stage including a first plurality of modems producing first bit streams in response to components of the first signal, a first plurality of signal reconstruction units producing first signal replicas in response to the first bit streams, and a first active cancellation unit weighting the first signal replicas and subtracting the weighted first signal replicas from the first signal to produce a second signal; and a second stage including a second plurality of modems producing second bit streams in response to components of the second signal, a second plurality of signal reconstruction units producing second signal replicas in response to the second bit streams, and a second active cancellation unit weighting the second signal replicas and subtracting the weighted second signal replicas from the first signal to produce a third signal. A method implemented by the receiver is also provided.
摘要翻译：接收机包括多个天线; 多个前端电路响应于在天线上接收的信号产生数字信号; 波束成形单元对数字信号进行加权和求和以产生第一信号; 第一级，包括响应于第一信号的分量产生第一比特流的第一多个调制解调器，响应于第一比特流产生第一信号副本的第一多个信号重建单元，以及第一主动消除单元，信号副本，并从第一信号中减去加权的第一信号副本以产生第二信号; 以及第二级，包括响应于第二信号的分量产生第二比特流的第二多个调制解调器，响应于第二比特流产生第二信号副本的第二多个信号重建单元，以及第二主动消除单元，第二信号副本，并从第一信号中减去加权的第二信号副本以产生第三信号。还提供了由接收机实现的方法。

9. 发明授权

US07684469B2 Code division multiple access transmission antenna weighting 有权
标题翻译：码分多址发射天线加权
公开(公告)号：US07684469B2
公开(公告)日：2010-03-23
申请号：US11567498
申请日：2006-12-06
申请人： David K Mesecher
发明人： David K Mesecher
IPC分类号： H04K1/00
CPC分类号： H04B1/712 , H04B7/0613 , H04B7/0615 , H04B7/0619 , H04B7/0634 , H04B7/0678 , H04B7/0845 , H04B7/0854 , H04B7/0857 , H04B7/0891 , H04B2201/70701 , H04J13/0003
摘要： A code division multiple access communication system has a base station with a plurality of transmitting antennas. From each transmitting antenna of the base station, a pilot signal is transmitted having a different chip sequence than the other transmitting antenna. At a user equipment, the transmitted pilot signals are received from each transmitting antenna. A weight adjustment is derived in response to the received transmitted pilot signals. The user equipment transmits the weight adjustment to the base station. The transmitted weight adjustment is received from the user equipment. A data signal is processed to produce a plurality of versions of the data signal. At least a portion of each processed data signal has a different chip sequence than the other processed data signal version. At least one processed data signal version is weighted by a weight value adjusted in response to the received transmitted weight adjustment. From each transmitting antenna, a different one of the data signal versions is transmitted and the transmitted data signal versions are received at the user equipment.
摘要翻译：码分多址通信系统具有具有多个发送天线的基站。从基站的每个发送天线发送具有与另一发送天线不同的码片序列的导频信号。在用户设备中，从每个发送天线接收所发送的导频信号。响应于接收到的发送导频信号导出权重调整。用户设备向基站发送权重调整。从用户设备接收发送的权重调整。处理数据信号以产生数据信号的多个版本。每个处理的数据信号的至少一部分具有与其它处理的数据信号版本不同的码片序列。至少一个经处理的数据信号版本通过响应于接收到的发送权重调整而调整的权重值加权。从每个发送天线，发送不同的数据信号版本，并且在用户设备处接收所发送的数据信号版本。

10. 发明授权

US07116701B2 Base station using an antenna array for location determination 有权
标题翻译：基站使用天线阵列进行位置确定
公开(公告)号：US07116701B2
公开(公告)日：2006-10-03
申请号：US10838599
申请日：2004-05-04
申请人： David K. Mesecher
发明人： David K. Mesecher
IPC分类号： A04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04W64/00 , G01S5/0215 , G01S5/12
摘要： A base station comprises a plurality of antennas. Each of the antennas is separated by a known distance. A first spread spectrum signal is transmitted having a first code. Using the plurality of antennas, a second spread spectrum signal is received having a second code. The second spread spectrum signal is time synchronized with the first spread spectrum signal. A distance determination is made based on in part a timing difference between the second code of the received second spread spectrum signal and the first code of the base station's transmitted first spread spectrum signal. A phase difference of a carrier signal of the second spread spectrum signal as received by each of the plurality of antennas is compared. An angle of the received second spread spectrum signal is determined using the known distance between the antennas and the phase difference. A location of a source of the second spread spectrum signal is determined using the determined angle and the distance determination.
摘要翻译：基站包括多个天线。每个天线以已知的距离分开。发送具有第一码的第一扩频信号。使用多个天线，接收具有第二码的第二扩频信号。第二扩频信号与第一扩频信号时间同步。基于部分地基于接收到的第二扩频信号的第二码与基站发送的第一扩频信号的第一码之间的定时差进行距离确定。比较由多个天线中的每一个接收的第二扩频信号的载波信号的相位差。使用天线之间的已知距离和相位差来确定接收的第二扩频信号的角度。使用所确定的角度和距离确定来确定第二扩频信号的源的位置。

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