公开(公告)号：US07136369B2

公开(公告)日：2006-11-14

申请号：US10100997

申请日：2002-03-19

申请人： Alexander Reznik ,  Timothy J. Lubecki ,  Ariela Zeira

发明人： Alexander Reznik ,  Timothy J. Lubecki ,  Ariela Zeira

IPC分类号： H04B7/216

CPC分类号： H04B1/7105 ,  H04B1/7093 ,  H04B1/71052 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A multiuser detector that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser detector is compatible with ZF-BLE, MMSE, decorrelating detectors and the like using Cholesky decomposition to minimize numeric operations. The system and method arranges the columns of system transmission response matrices representing the response characteristics of individual users into a total system transmission response matrix which represents a plurality of matched-filter responses for a given block of received data. The invention in conjunction with Cholesky decomposition reduces the number of required mathematic operations prior to parallel matched filtering.

公开(公告)号：US06741653B2

公开(公告)日：2004-05-25

申请号：US10064307

申请日：2002-07-01

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC分类号： H04N712

CPC分类号： H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

摘要翻译： 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 相关代码具有扰码周期。 总系统响应矩阵具有块。 每个块具有长度M的一维和基于部分M的长度的另一维度和每个通信的扩展因子。 M基于扰码周期。 使用所构建的系统响应矩阵来接收所接收的多个通信信号的数据。

公开(公告)号：US06714527B2

公开(公告)日：2004-03-30

申请号：US10174121

申请日：2002-06-18

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC分类号： H04J1302

CPC分类号： H04B1/71052 ,  H04B1/7105 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A plurality of communication signals have differing spreading codes. Each communication has an associated code comprising chips. For each chip of each communication, a vector of that chip convolved with an impulse response is produced. For each communication, support blocks comprising the chip vectors are produced. A number of the chip vectors in a support block is based on that communication's spreading factor. A system response matrix is assembled. The system response matrix has symbol sub-matrices. Each symbol sub-matrix comprises a support block from each communication. Data of the communications is detected using the symbol response matrix.

摘要翻译： 多个通信信号具有不同的扩展码。 每个通信具有包括芯片的相关代码。 对于每个通信的每个芯片，产生与脉冲响应卷积的该芯片的矢量。 对于每个通信，产生包括芯片向量的支持块。 支持块中的多个码片向量基于该通信的扩频因子。 组合系统响应矩阵。 系统响应矩阵具有符号子矩阵。 每个符号子矩阵包括来自每个通信的支持块。 使用符号响应矩阵检测通信的数据。

公开(公告)号：US20100020856A1

公开(公告)日：2010-01-28

申请号：US12549959

申请日：2009-08-28

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC分类号： H04B1/707

CPC分类号： H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

摘要翻译： 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 相关代码具有扰码周期。 总系统响应矩阵具有块。 每个块具有长度M的一维和基于部分M的长度的另一维度和每个通信的扩展因子。 M基于扰码周期。 使用所构建的系统响应矩阵来接收所接收的多个通信信号的数据。

公开(公告)号：US07609794B2

公开(公告)日：2009-10-27

申请号：US12191702

申请日：2008-08-14

申请人： Alexander Reznik ,  Rui Yang ,  Bin Li ,  Ariela Zeira

发明人： Alexander Reznik ,  Rui Yang ,  Bin Li ,  Ariela Zeira

IPC分类号： H04B7/10

CPC分类号： H04L25/0242 ,  H04B1/71052 ,  H04L25/0212 ,  H04L25/03057 ,  H04L25/03292 ,  H04L2025/03426 ,  H04L2025/03509 ,  H04L2025/03605

摘要： Data estimation is performed in a wireless communication system using both oversampling and multiple reception antennas. A receive vector is produced for each antenna at a sampling interval which is a multiple of the chip rate of the received signal. A channel response matrix is produced for each antenna at a preferred multiple of the sampling rate. Each receive vector is processed using a sliding window based approach, where a plurality of successive windows are processed. For each window, a combined circulant channel response matrix is produced using the channel response matrices. Using the combined circulant channel response matrix and a combined received vector comprising each received vector in a discrete Fourier transform based approach to estimate a data vector corresponding to that window; and combining the data vector estimated in each window to form a combined data vector.

摘要翻译： 在使用过采样和多个接收天线的无线通信系统中执行数据估计。 以每个天线的采样间隔产生接收矢量，该采样间隔是接收信号的码片速率的倍数。 以采样率的优选倍数为每个天线产生信道响应矩阵。 使用基于滑动窗口的方法处理每个接收向量，其中处理多个连续的窗口。 对于每个窗口，使用信道响应矩阵来产生组合循环信道响应矩阵。 使用组合循环信道响应矩阵和包括基于离散傅立叶变换的方法中的每个接收向量的组合接收向量来估计对应于该窗口的数据矢量; 并组合在每个窗口中估计的数据矢量以形成组合的数据向量。

公开(公告)号：US07428279B2

公开(公告)日：2008-09-23

申请号：US10791244

申请日：2004-03-02

申请人： Rui Yang ,  Bin Li ,  Alexander Reznik ,  Ariela Zeira

发明人： Rui Yang ,  Bin Li ,  Alexander Reznik ,  Ariela Zeira

IPC分类号： H03D1/04

CPC分类号： H04L25/03057 ,  H04L25/0212 ,  H04L25/0242 ,  H04L25/03292 ,  H04L2025/03605

摘要： A sliding window based data estimation is performed. An error is introduced in the data estimation due to the communication model modeling the relationship between the transmitted and received signals. To compensate for an error in the estimated data, the data that was estimated in a previous sliding window step or terms that would otherwise be truncated as noise are used. These techniques allow for the data to be truncated prior to further processing reducing the data of the window.

摘要翻译： 执行基于滑动窗口的数据估计。 由于通信模型对发送和接收信号之间的关系建模，在数据估计中引入了误差。 为了补偿估计数据中的错误，使用在先前的滑动窗口步骤中估计的数据或否则将被截断为噪声的术语。 这些技术允许在进一步处理之前对数据进行截断以减少窗口的数据。

公开(公告)号：US07127014B2

公开(公告)日：2006-10-24

申请号：US11327738

申请日：2006-01-06

申请人： Bin Li ,  Rui Yang ,  Alexander Reznik ,  Ariela Zeira

发明人： Bin Li ,  Rui Yang ,  Alexander Reznik ,  Ariela Zeira

IPC分类号： H04B1/10 ,  H04B7/216

CPC分类号： H04B1/7113 ,  H04B1/7115 ,  H04L25/03038 ,  H04L25/03987 ,  H04L2025/03592

摘要： A receiver which suppresses inter-cluster multipath interference by processing an impulse channel response consisting of two multipath clusters, each cluster having groups of signals with multiple delays. In one embodiment, the receiver includes a single antenna and parallel-connected delay units used to align the groups of signals before being input into respective sliding window equalizers. The outputs of the equalizers are combined at chip level via a combiner which provides a single output. In another embodiment, a cluster multipath interference suppression (CMIS) circuit is incorporated into the receiver. The CMIS circuit includes a hard decision unit and a plurality of signal regeneration units to generate replicas of the multipath clusters. The replicas are subtracted from the respective outputs of the delay units and the results are input to the respective sliding window equalizers. In another embodiment, multiple antennas are used to receive and process the clusters.

摘要翻译： 一种通过处理由两个多径簇组成的脉冲信道响应来抑制簇间多径干扰的接收机，每个簇具有多个延迟的信号组。 在一个实施例中，接收机包括单个天线和并联连接的延迟单元，用于在输入到相应的滑动窗口均衡器之前将信号组对准。 均衡器的输出通过提供单个输出的组合器在芯片级组合。 在另一个实施例中，集群多径干扰抑制（CMIS）电路被并入到接收机中。 CMIS电路包括硬决策单元和多个信号再生单元以生成多路径簇的副本。 从延迟单元的相应输出中减去副本，并将结果输入到各个滑动窗均衡器。 在另一个实施例中，使用多个天线来接收和处理簇。

公开(公告)号：US20060034398A1

公开(公告)日：2006-02-16

申请号：US11265932

申请日：2005-11-03

申请人： Alexander Reznik ,  Rui Yang ,  Bin Li ,  Ariela Zeira

发明人： Alexander Reznik ,  Rui Yang ,  Bin Li ,  Ariela Zeira

IPC分类号： H04L27/06

CPC分类号： H04L25/0242 ,  H04B1/71052 ,  H04L25/0212 ,  H04L25/03057 ,  H04L25/03292 ,  H04L2025/03426 ,  H04L2025/03509 ,  H04L2025/03605

摘要： Data estimation is performed in a wireless communication system using both oversampling and multiple reception antennas. A receive vector is produced for each antenna at a sampling interval which is a multiple of the chip rate of the received signal. A channel response matrix is produced for each antenna at a preferred multiple of the sampling rate. Each receive vector is processed using a sliding window based approach, where a plurality of successive windows are processed. For each window, a combined circulant channel response matrix is produced using the channel response matrices. Using the combined circulant channel response matrix and a combined received vector comprising each received vector in a discrete Fourier transform based approach to estimate a data vector corresponding to that window; and combining the data vector estimated in each window to form a combined data vector.

公开(公告)号：US20120269237A1

公开(公告)日：2012-10-25

申请号：US13544771

申请日：2012-07-09

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC分类号： H04B1/707

CPC分类号： H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals have a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

摘要翻译： 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 相关代码具有扰码周期。 总系统响应矩阵具有块。 每个块具有长度M的一维和基于部分M的长度的另一维度和每个通信的扩展因子。 M基于扰码周期。 使用所构建的系统响应矩阵来接收所接收的多个通信信号的数据。

公开(公告)号：US08218607B2

公开(公告)日：2012-07-10

申请号：US12549959

申请日：2009-08-28

申请人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

发明人： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC分类号： H04B1/707

CPC分类号： H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

摘要： A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

摘要翻译： 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 相关代码具有扰码周期。 总系统响应矩阵具有块。 每个块具有长度M的一维和基于部分M的长度的另一维度和每个通信的扩展因子。 M基于扰码周期。 使用所构建的系统响应矩阵来接收所接收的多个通信信号的数据。