公开(公告)号：US07596171B2

公开(公告)日：2009-09-29

申请号：US11962779

申请日：2007-12-21

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：US20090168739A1

公开(公告)日：2009-07-02

申请号：US12368586

申请日：2009-02-10

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

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

IPC分类号： H04B7/216

CPC分类号： H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/71057 ,  H04L1/20

摘要： Method and apparatus employed by a UE for interference signal code power noise variance estimation employing a reduced number of samples utilizing the equation σ ^ n 2 = T · ∑ i = 1 N sample   h n  ( i )  2 , where T = G · γ  ( r ) N sample , where Nsample=Lchest−Np1·Kmax, and where γ  ( r ) = [ 1 + ( 1 r - 1 ) · ln  ( 1 - r ) ] - 1 and where r = N sample L chest . As an alternative, a recursive technique may be employed wherein the noise variance is estimated from the ignored coefficients of the estimated channel output and upgraded recursively as per the following: σ ^ n 2 = 1 KW  ∑ j = 1 K  ∑ i = 1 W   h i ( j ) - h ^ i ( j )  2 , where ĥi(j) are the channel estimates after the post processing and the noise variance estimates {circumflex over (σ)}n-12, and the initial values of ĥi(j) are all zeros.

公开(公告)号：US07539238B2

公开(公告)日：2009-05-26

申请号：US12173163

申请日：2008-07-15

申请人： Jung-Lin Pan ,  Yuejin Huang ,  Ariela Zeira

发明人： Jung-Lin Pan ,  Yuejin Huang ,  Ariela Zeira

IPC分类号： H04L27/06 ,  H04B1/707

CPC分类号： H04B1/71052 ,  H04L25/03159 ,  H04L2025/03414 ,  H04L2025/03522 ,  H04L2025/03605

摘要： A method of data estimation for a Time Division Duplex (TDD) Code Division Multiple Access (CDMA) system or any other system using an extended algorithm (EA) in preference to a truncated algorithm (TA). The EA avoids implementation errors by choice of proper extended matrices, and accepts the use of one piece of hardware. The EA also obviates loss of multiple signals in the tail part of each data field, and avoids errors due to transformation of a Toeplitz matrix to a circulant matrix.

摘要翻译： 一种用于时分双工（TDD）码分多址（CDMA）系统或使用优先于截断算法（TA）的扩展算法（EA）的任何其他系统的数据估计方法。 EA通过选择适当的扩展矩阵来避免实现错误，并接受使用一块硬件。 EA还消除了每个数据字段的尾部中的多个信号的丢失，并且避免了由于Toeplitz矩阵向循环矩阵的转换而导致的错误。

公开(公告)号：US07532667B2

公开(公告)日：2009-05-12

申请号：US11256047

申请日：2005-10-21

申请人： Jung-Lin Pan ,  Mihaela C. Beluri ,  Philip J. Pietraski

发明人： Jung-Lin Pan ,  Mihaela C. Beluri ,  Philip J. Pietraski

IPC分类号： H03H7/30

CPC分类号： H04L25/03038 ,  H04B1/712 ,  H04B2201/70701 ,  H04L25/03044 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/03617

摘要： A normalized least means square (NLMS) equalizer including two equalizer filters is disclosed. In one embodiment, a single correction term generator is used to generate correction terms for tap coefficient updates of each of the equalizer filters based on a pilot signal. In another embodiment, two different correction term generators are used to generate correction terms for each of the equalizer filters, whereby one of the correction term generators uses data received from a hard decision unit at the output of one of the equalizer filters to generate correction terms for both of the equalizer filters.

摘要翻译： 公开了包括两个均衡器滤波器的归一化最小均方（NLMS）均衡器。 在一个实施例中，单个校正项生成器用于基于导频信号产生每个均衡器滤波器的抽头系数更新的校正项。 在另一个实施例中，使用两个不同的校正项发生器来产生每个均衡器滤波器的校正项，由此校正项发生器之一使用在均衡器滤波器之一的输出处从硬判决单元接收的数据来产生校正项 两个均衡器滤波器。

公开(公告)号：US20090074036A1

公开(公告)日：2009-03-19

申请号：US12277918

申请日：2008-11-25

申请人： Jung-Lin Pan ,  Ariela Zeira

发明人： Jung-Lin Pan ,  Ariela Zeira

IPC分类号： H04B1/00

CPC分类号： H04B1/7105 ,  H04B1/707

摘要： Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector of sequential samples. The received vector is processed to produce a plurality of segments. Each segment is processed separately to estimate data of the received communications.

摘要翻译： 通过无线通信装置估计多个接收的扩频信号的数据。 多个接收到的通信在共享频谱中被接收。 接收到的通信被采样以产生接收的连续采样矢量。 处理所接收的矢量以产生多个段。 每个段被单独处理以估计接收到的通信的数据。

公开(公告)号：US07492750B2

公开(公告)日：2009-02-17

申请号：US10901796

申请日：2004-07-29

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

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

IPC分类号： H04J3/00

CPC分类号： H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/71057 ,  H04L1/20

摘要： Method and apparatus employed by a UE for interference signal code power noise variance estimation employing a reduced number of samples utilizing the equation σ ^ n 2 = T · ∑ i = 1 N sample ⁢  h n ⁡ ( i )  2 , where T = G · γ ⁡ ( r ) N sample , where Nsample=Lchest−Npl·Kmax, where γ ⁡ ( r ) = [ 1 + ( 1 r - 1 ) · ln ⁡ ( 1 - r ) ] - 1 and where r = N sample L chest . As an alternative, a recursive technique may be employed wherein the noise variance is estimated from the ignored coefficients of the estimated channel output and upgraded recursively as per the following: σ ^ n 2 = 1 KW ⁢ ∑ j = 1 K ⁢ ∑ i = 1 W ⁢  h i ( j ) - h ^ i ( j )  2 , where ĥi(j) are the channel estimates after the post processing and the noise variance estimates {circumflex over (σ)}n−12, and the initial values of ĥi(j) are all zeros.

公开(公告)号：US07483475B2

公开(公告)日：2009-01-27

申请号：US11926534

申请日：2007-10-29

申请人： Jaeyoung Kwak ,  John W. Haim ,  Ariela Zeira ,  Jung-Lin Pan

发明人： Jaeyoung Kwak ,  John W. Haim ,  Ariela Zeira ,  Jung-Lin Pan

IPC分类号： H04B1/00

CPC分类号： H04B1/71052 ,  H04B2201/70707

摘要： K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the; extended and approximated system and covariance matrices are determined by prime factor algorithm—fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.

摘要翻译： K个数据信号或脉冲串以码分多址通信格式通过共享频谱发送。 组合信号在共享频谱上被接收和采样，作为多个接收的矢量版本。 组合信号包括K个发送的数据信号。 产生多个系统矩阵和使用K个数据信号的代码和估计的脉冲响应的相关协方差矩阵。 每个系统矩阵对应于接收到的矢量版本。 系统和协方差矩阵被扩展和近似为块循环矩阵。 每个的对角矩阵; 扩展和近似系统和协方差矩阵通过素数因子算法 - 快速傅里叶变换（PFA-FFT）来确定，而不分割矩阵。 收到的矢量版本被扩展。 采用对角矩阵和扩展接收向量版本的乘积。 通过PFA-FFT对乘积的结果执行逆块离散傅里叶变换，以产生K个数据信号的估计数据。

公开(公告)号：US20080317103A1

公开(公告)日：2008-12-25

申请号：US12185878

申请日：2008-08-05

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： H04B1/707

CPC分类号： H04B1/7105 ,  H04B1/71052 ,  H04B2201/70707 ,  H04L25/0212

摘要： A transmitter site transmits a plurality of different data signals at a chip rate over a shared spectrum in a code division multiple access communication system. Each transmitted data signal experiences a similar channel response. A combined signal of the transmitted data signals is received. The combined signal is sampled at a multiple of the chip rate. The channel response for the combined signal is determined. A spread data vector is determined using the combined signal samples and the estimated channel response. The data of the different data signals is determined using the spread data vector.

摘要翻译： 发射机站在码分多址通信系统中通过共享频谱以码片速率发送多个不同的数据信号。 每个发送的数据信号经历类似的信道响应。 接收发送的数据信号的组合信号。 组合信号以芯片速率的倍数进行采样。 确定组合信号的信道响应。 使用组合的信号样本和估计的信道响应来确定扩展数据向量。 使用扩展数据向量来确定不同数据信号的数据。

公开(公告)号：US07313172B2

公开(公告)日：2007-12-25

申请号：US11408411

申请日：2006-04-21

申请人： Jung-Lin Pan ,  Younglok Kim ,  Donald M. Grieco

发明人： Jung-Lin Pan ,  Younglok Kim ,  Donald M. Grieco

IPC分类号： H04B1/707 ,  H04B1/10

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。

公开(公告)号：US20070253396A1

公开(公告)日：2007-11-01

申请号：US11824792

申请日：2007-07-02

申请人： Jung-Lin Pan

发明人： Jung-Lin Pan

IPC分类号： H04B7/216

CPC分类号： H04B1/70757 ,  H04B1/707 ,  H04B1/7115 ,  H04B2201/70707 ,  H04L25/03038 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/03617

摘要： A method and apparatus for reducing the processing rate when performing chip-level equalization (CLE) in a code division multiple access (CDMA) receiver which includes an equalizer filter. Signals received by at least one antenna of the receiver are sampled at M times the chip rate. Each sample stream is split into M sample data streams at the chip rate. Multipath combining is preferably performed on each split sample data stream. The sample data streams are then combined into one combined sample data stream at the chip rate. The equalizer filter performs equalization on the combined sample stream at the chip rate. Filter coefficients are adjusted by adding a correction term to the filter coefficients utilized by the equalizer filter for a previous iteration.

摘要翻译： 一种用于在包括均衡器滤波器的码分多址（CDMA）接收机中执行码片级均衡（CLE）时降低处理速率的方法和装置。 由接收机的至少一个天线接收的信号以芯片速率的M倍采样。 每个样本流以码片速率被分成M个采样数据流。 优选对每个分割样本数据流执行多路径组合。 然后将样本数据流以码片速率组合成一个组合的采样数据流。 均衡器滤波器以码片速率对组合的采样流进行均衡。 通过将校正项加到由均衡器滤波器用于先前迭代的滤波器系数来调整滤波器系数。