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91. 发明授权

US07110385B2 Single user detection base station 有权
公开(公告)号：US07110385B2
公开(公告)日：2006-09-19
申请号：US10080124
申请日：2002-02-21
申请人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
发明人： Parthapratim De , Ariela Zeira , Jung-Lin Pan , Raj Mani Misra
IPC分类号： H04B7/216
CPC分类号： H04B1/7105 , H04B1/71052 , H04B2201/70707 , H04L25/0212
摘要： A code division multiple access base station is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over a shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A first element of a spread data vector is determined using the combined signal samples and the estimated channel response. A factor from the first element determination is used to determine remaining elements of the spread data vector. Data of the data signals is estimated using the determined elements of the spread data vector.

92. 发明申请

US20060126704A1 System for estimating data using iterative fast fourier transform error correction 审中-公开
标题翻译：使用迭代快速傅里叶变换误差校正来估计数据的系统
公开(公告)号：US20060126704A1
公开(公告)日：2006-06-15
申请号：US11352581
申请日：2006-02-13
申请人： Jung-Lin Pan , Ariela Zeira
发明人： Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B1/707
CPC分类号： H04B1/71052 , H04B1/7105 , H04B2201/70707
摘要： A system for estimating data from a received plurality of data signals in a code division multiple access communication system. The data signals are transmitted in a shared spectrum at substantially the same time. A receiver receives a combined signal of the transmitted data signals and a sampling device samples the combined signal. A channel estimating device estimates a channel response for the transmitted data signals. A data detection device estimates data of the data signals using the samples and the estimated channel response. The data estimation uses a Fourier transform based data estimating approach. An error in the data estimation introduced from a circulant approximation used in the Fourier transform based approach is iteratively reduced.
摘要翻译：一种用于在码分多址通信系统中从接收的多个数据信号估计数据的系统。数据信号在基本上同时在共享光谱中传输。接收器接收所发送的数据信号的组合信号，并且采样装置对组合的信号进行采样。信道估计装置估计所发送的数据信号的信道响应。数据检测装置使用样本和估计的信道响应来估计数据信号的数据。数据估计使用基于傅里叶变换的数据估计方法。从基于傅立叶变换的方法中使用的循环近似引入的数据估计中的误差被迭代地减少。

93. 发明申请

US20060114974A1 Normalized least mean square chip-level equalization advanced diversity receiver 审中-公开
标题翻译：归一化最小均方芯片级均衡高级分集接收机
公开(公告)号：US20060114974A1
公开(公告)日：2006-06-01
申请号：US11210949
申请日：2005-08-24
申请人： Ariela Zeira , Philip Pietraski , Jung-Lin Pan , Mihaela Beluri , Rui Yang
发明人： Ariela Zeira , Philip Pietraski , Jung-Lin Pan , Mihaela Beluri , Rui Yang
IPC分类号： H04B1/707 , H04B1/10
CPC分类号： H04L25/03044 , H04B1/7097 , H04B7/0854 , H04L2025/03375 , H04L2025/03426 , H04L2025/03477 , H04L2025/03509 , H04L2025/03617
摘要： A receiver which includes at least one equalizer filter and a tap coefficients generator for implementing receive diversity. The equalizer filter processes a signal derived from signals received by a plurality of antennas. In one embodiment, sample data streams from the antennas are merged into one sample data stream. The merged sample data stream is processed by a single extended equalizer filter, whereby filter coefficients are adjusted in accordance with a joint error signal. A filter coefficient correction term used by the equalizer filter is generated by the tap coefficients generator using a normalized least mean square (NLMS) algorithm. In another embodiment, a plurality of equalizer filters are utilized, whereby each equalizer receives a sample data stream from a specific one of the antennas. In yet another embodiment, the sample data streams are combined after being processed by a plurality of matched filters based on respective estimated channel impulse responses.
摘要翻译：包括至少一个均衡器滤波器和用于实现接收分集的抽头系数发生器的接收机。均衡器滤波器处理由多个天线接收的信号导出的信号。在一个实施例中，来自天线的采样数据流被合并成一个采样数据流。合并的采样数据流由单个扩展均衡器滤波器处理，由此根据联合误差信号调整滤波器系数。由均衡器滤波器使用的滤波器系数校正项由抽头系数发生器使用归一化最小均方（NLMS）算法生成。在另一个实施例中，利用多个均衡器滤波器，由此每个均衡器从特定天线接收采样数据流。在另一个实施例中，基于相应估计的信道脉冲响应，在由多个匹配滤波器处理之后组合采样数据流。

94. 发明授权

US06993002B2 Code power measurement for dynamic channel allocation 失效
公开(公告)号：US06993002B2
公开(公告)日：2006-01-31
申请号：US09901289
申请日：2001-07-09
申请人： Jung-Lin Pan , Ariela Zeira
发明人： Jung-Lin Pan , Ariela Zeira
IPC分类号： H04B7/216
CPC分类号： H04W72/082 , H04B1/7103 , H04B2201/709709 , H04J13/16 , H04W16/14 , H04W24/10 , H04W52/0216 , H04W52/0219 , H04W72/0446 , H04W72/0466 , H04W74/04 , Y02D70/1242 , Y02D70/40
摘要： Resource units are assigned within a cell of a wireless time division duplex communication system using code division multiple access. Each resource units is associated with a time slot and a code. For selected ones of the cell's resource units, the code interference level is measured during that unit's time slot and using that unit's code. The code interference level is compared to a threshold to determine whether that unit has an acceptable code interference level. Resource units are assigned to communications out of the unit's having acceptable interference levels.

95. 发明授权

US06963546B2 Multi-user detection using an adaptive combination of joint detection and successive interface cancellation 有权
标题翻译：使用联合检测和连续接口消除的自适应组合的多用户检测
公开(公告)号：US06963546B2
公开(公告)日：2005-11-08
申请号：US09783792
申请日：2001-02-15
申请人： Raj Mani Misra , Ariela Zeira , Jung-Lin Pan
发明人： Raj Mani Misra , Ariela Zeira , Jung-Lin Pan
IPC分类号： H04B1/7103 , H04B1/707 , H04B1/7093 , H04J3/00 , H04L25/03 , H04Q7/38 , H04L5/14
CPC分类号： H04B1/7105 , H04B1/71072 , H04L25/03305 , H04L25/03331
摘要： A time division duplex communication system using code division multiple access transmits a plurality of data signals over a shared spectrum in a time slot. A combined signal is received over the shared spectrum in the time slot. The plurality of data signals are grouped into a plurality of groups. The combined signal is matched filtered based on in part symbol responses associated with the data signals of one of the groups. Data from each data signal in the one group is jointly detected. An interference signal is constructed based on in part the one group detected data. The constructed interference signal is subtracted from the combined signal. Data from the other groups is detected by processing the subtracted signal.
摘要翻译：使用码分多址的时分双工通信系统在时隙中通过共享频谱发送多个数据信号。在时隙中通过共享频谱接收组合信号。多个数据信号被分组成多个组。基于与组中的一个的数据信号相关联的部分符号响应来对组合的信号进行匹配滤波。来自一组中的每个数据信号的数据被共同检测。部分地基于一组检测数据构建干扰信号。从组合信号中减去构成的干扰信号。通过处理相减信号来检测来自其他组的数据。

96. 发明申请

US20090316762A1 SCALING USING GAIN FACTORS FOR USE IN DATA DETECTION 失效
标题翻译：使用增益因子进行数据检测
公开(公告)号：US20090316762A1
公开(公告)日：2009-12-24
申请号：US12549912
申请日：2009-08-28
申请人： Jung-Lin Pan , Younglok Kim , Donald Grieco
发明人： Jung-Lin Pan , Younglok Kim , Donald Grieco
IPC分类号： H04B1/707 , H04M1/00
CPC分类号： H04B1/71055 , H04B1/1027 , H04B1/7103 , H04L25/0202 , H04L25/0204 , H04L25/0212 , H04L25/0224 , H04L25/03006
摘要： Data is estimated from a received vector comprising a plurality of communications. A received wireless signal is converted to a baseband signal, which is sampled to produce a received vector. Channel responses are estimated for the received communications. The noise variance is estimated. The noise variance is scaled by a scaling factor. Samples are processed using the estimated channel responses and the scaled noise variance to produce a spread data vector. The spread data vector is despread to recover the data of the received wireless signal.
摘要翻译：从包括多个通信的接收向量估计数据。接收到的无线信号被转换为基带信号，其被采样以产生接收的矢量。对接收到的通信估计通道响应。估计噪声方差。噪声方差用比例因子缩放。使用估计的信道响应和缩放的噪声方差来处理样本以产生扩展数据向量。扩展数据向量被解扩以恢复所接收的无线信号的数据。

97. 发明申请

US20050013347A1 Generalized two-stage data estimation 失效
标题翻译：广义两阶段数据估计
公开(公告)号：US20050013347A1
公开(公告)日：2005-01-20
申请号：US10753631
申请日：2004-01-08
申请人： Jung-Lin Pan , Yuejin Huang , Donald Grieco
发明人： Jung-Lin Pan , Yuejin Huang , Donald Grieco
IPC分类号： H04B1/707
CPC分类号： H04B1/71052 , H04B1/71055 , H04B2201/70707 , H04L25/0206 , H04L25/0246
摘要： Symbols are to be recovered from signals received in a shared spectrum. Codes of the signals received in the shared spectrum are processed using a block Fourier transform (FT), producing a code block diagonal matrix. A channel response of the received signals is estimated. The channel response is extended and modified to produce a block circulant matrix and a block FT is taken, producing a channel response block diagonal matrix. The code block diagonal matrix is combined with the channel response block diagonal matrix. The received signals are sampled and processed using the combined code block diagonal matrix and the channel response block diagonal matrix with a Cholesky algorithm. A block inverse FT is performed on a result of the Cholesky algorithm to produce spread symbols. The spread symbols are despread to recover symbols of the received signals.
摘要翻译：符号将从在共享频谱中接收的信号中恢复。使用块傅里叶变换（FT）处理在共享频谱中接收的信号的码，产生码块对角矩阵。估计接收信号的信道响应。信道响应被扩展和修改以产生块循环矩阵，并采用块FT，产生信道响应块对角矩阵。码块对角矩阵与信道响应块对角矩阵组合。使用Cholesky算法使用组合码块对角矩阵和信道响应块对角矩阵对接收到的信号进行采样和处理。对Cholesky算法的结果执行块反向FT以产生扩展符号。扩展符号被解扩以恢复接收信号的符号。

98. 发明申请

US20080095216A1 SCALING USING GAIN FACTORS FOR USE IN DATA DETECTION 失效
标题翻译：使用增益因子进行数据检测
公开(公告)号：US20080095216A1
公开(公告)日：2008-04-24
申请号：US11962371
申请日：2007-12-21
申请人： Jung-Lin Pan , Younglok Kim , Donald Grieco
发明人： Jung-Lin Pan , Younglok Kim , Donald Grieco
IPC分类号： H04B1/10 , H04B1/707
CPC分类号： H04B1/71055 , H04B1/1027 , H04B1/7103 , H04L25/0202 , H04L25/0204 , H04L25/0212 , H04L25/0224 , H04L25/03006
摘要： Data is estimated from a received vector comprising a plurality of communications. A received wireless signal is converted to a baseband signal, which is sampled to produce a received vector. Channel responses are estimated for the received communications. The noise variance is estimated. The noise variance is scaled by a scaling factor. Samples are processed using the estimated channel responses and the scaled noise variance to produce a spread data vector. The spread data vector is despread to recover the data of the received wireless signal.
摘要翻译：从包括多个通信的接收向量估计数据。接收到的无线信号被转换为基带信号，其被采样以产生接收的矢量。对接收到的通信估计通道响应。估计噪声方差。噪声方差用比例因子缩放。使用估计的信道响应和缩放的噪声方差来处理样本以产生扩展数据向量。扩展数据向量被解扩以恢复所接收的无线信号的数据。

99. 发明申请

US20060188008A1 Scaling using gain factors for use in data detection 失效
公开(公告)号：US20060188008A1
公开(公告)日：2006-08-24
申请号：US11408411
申请日：2006-04-21
申请人： Jung-Lin Pan , Younglok Kim , Donald Grieco
发明人： Jung-Lin Pan , Younglok Kim , Donald Grieco
IPC分类号： H04B1/707
CPC分类号： H04B1/71055 , H04B1/1027 , H04B1/7103 , H04L25/0202 , H04L25/0204 , H04L25/0212 , H04L25/0224 , H04L25/03006
摘要： Data is estimated from a received vector comprising a plurality of communications. A received wireless signal is converted to a baseband signal, which is sampled to produce a received vector. Channel responses are estimated for the received communications. The noise variance is estimated. The noise variance is scaled by a scaling factor. Samples are processed using the estimated channel responses and the scaled noise variance to produce a spread data vector. The spread data vector is despread to recover the data of the received wireless signal.

100. 发明申请

US20050270991A1 Method and apparatus for reducing multi-user processing in wireless communication systems 失效
标题翻译：用于减少无线通信系统中的多用户处理的方法和装置
公开(公告)号：US20050270991A1
公开(公告)日：2005-12-08
申请号：US10924442
申请日：2004-08-24
申请人： Jung-Lin Pan , Jaeyoung Kwak , Donald Grieco
发明人： Jung-Lin Pan , Jaeyoung Kwak , Donald Grieco
IPC分类号： H04J3/00 , H04J11/00
CPC分类号： H04J13/0044 , H04B1/7105
摘要： A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a parent code is identified for each group of detected codes. A matrix A is constructed and joint detection is performed using the identified parent codes. Data symbols of the detected codes are obtained from the data symbols of the identified parent codes.
摘要翻译：公开了用于减少无线通信系统中接收机处的多用户处理的方法和装置。检测到的代码根据信道脉冲响应进行分组，并为每组检测到的代码识别父代码。构建矩阵A，并使用所识别的父代码执行联合检测。检测到的代码的数据符号从所识别的母代码的数据符号获得。

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