公开(公告)号：US07639729B2

公开(公告)日：2009-12-29

申请号：US10618227

申请日：2003-07-11

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

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

IPC分类号： H04B1/00

CPC分类号： H04L25/0232 ,  H04B2001/6912 ,  H04L27/103 ,  H04L27/2647

摘要： A low cost method and system for efficiently implementing channel estimation in a wireless communication system using any desired length of a fast Fourier transform (FFT) independent of burst type or signal structure. The hardware complexity required to perform the channel estimation to process a plurality of different burst types is reduced. Simple tail zero-padding is used when the length of FFT is extended to a desired length for more efficient computation.

摘要翻译： 一种用于在无线通信系统中有效实现信道估计的低成本方法和系统，其使用独立于突发类型或信号结构的快速傅里叶变换（FFT）的任何期望长度。 减少执行信道估计以处理多个不同突发类型所需的硬件复杂度。 当FFT的长度扩展到期望的长度以便更有效的计算时，使用简单的尾部零填充。

公开(公告)号：US20090225815A1

公开(公告)日：2009-09-10

申请号：US12468354

申请日：2009-05-19

申请人： Jung-Lin Pan ,  Yuejin Huang ,  Donald M. Grieco

发明人： Jung-Lin Pan ,  Yuejin Huang ,  Donald M. Grieco

IPC分类号： H04B1/707

CPC分类号： H04B1/71052 ,  H04B1/71055 ,  H04B2201/70707 ,  H04L25/0206 ,  H04L25/0246

摘要： A wireless transmit/receive unit (WTRU) is configure to receive and sample wireless signals in a shared spectrum where the wireless signal comprise encoded symbols. The WTRU has a channel estimation device configured to process received signal samples to produce an estimate of a channel response of the received signals corresponding to a matrix H. The channel estimation device is preferably configured to process the received signal samples to produce an estimate of noise variance of the received signals. The WTRU preferably has a two stage data estimator that includes a channel equalizer and a despreader. The channel equalizer is configured to process received signal samples using the estimated channel response matrix H and the estimate of noise variance to produce a spread signal estimate of the received signals. The despreader is configured to process the spread signal estimate of the received signals produced by said channel equalizer to recover encoded symbols of the received signals.

摘要翻译： 无线发射/接收单元（WTRU）被配置为在无线信号包括编码符号的共享频谱中接收和采样无线信号。 WTRU具有被配置为处理接收的信号样本以产生对应于矩阵H的接收信号的信道响应的估计的信道估计装置。信道估计装置优选地被配置为处理接收的信号样本以产生噪声估计 接收信号的方差。 WTRU优选地具有包括信道均衡器和解扩器的两级数据估计器。 信道均衡器被配置为使用估计的信道响应矩阵H和噪声方差的估计来处理接收的信号样本，以产生接收信号的扩展信号估计。 解扩器被配置为处理由所述信道均衡器产生的接收信号的扩展信号估计，以恢复所接收信号的编码符号。

公开(公告)号：US07573963B2

公开(公告)日：2009-08-11

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： H04L1/02 ,  H03H7/30

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。

公开(公告)号：US07545851B2

公开(公告)日：2009-06-09

申请号：US12135577

申请日：2008-06-09

申请人： Jung-Lin Pan ,  Yuejin Huang ,  Donald M. Grieco

发明人： Jung-Lin Pan ,  Yuejin Huang ,  Donald M. Grieco

IPC分类号： H04B1/707 ,  H04K1/10

CPC分类号： H04B1/71052 ,  H04B1/71055 ,  H04B2201/70707 ,  H04L25/0206 ,  H04L25/0246

摘要： A wireless transmit/receive unit (WTRU) is configure to receive and sample wireless signals in a shared spectrum where the wireless signal comprise encoded symbols. The WTRU has a channel estimation device configured to process received signal samples to produce an estimate of a channel response of the received signals corresponding to a matrix H. The channel estimation device is preferably configured to process the received signal samples to produce an estimate of noise variance of the received signals. The WTRU preferably has a two stage data estimator that includes a channel equalizer and a despreader. The channel equalizer is configured to process received signal samples using the estimated channel response matrix H and the estimate of noise variance to produce a spread signal estimate of the received signals. The despreader is configured to process the spread signal estimate of the received signals produced by said channel equalizer to recover encoded symbols of the received signals.

摘要翻译： 无线发射/接收单元（WTRU）被配置为在无线信号包括编码符号的共享频谱中接收和采样无线信号。 WTRU具有被配置为处理接收的信号样本以产生对应于矩阵H的接收信号的信道响应的估计的信道估计装置。信道估计装置优选地被配置为处理接收的信号样本以产生噪声估计 接收信号的方差。 WTRU优选地具有包括信道均衡器和解扩器的两级数据估计器。 信道均衡器被配置为使用估计的信道响应矩阵H和噪声方差的估计来处理接收的信号样本，以产生接收信号的扩展信号估计。 解扩器被配置为处理由所述信道均衡器产生的接收信号的扩展信号估计，以恢复所接收信号的编码符号。

公开(公告)号：US07529210B2

公开(公告)日：2009-05-05

申请号：US11305283

申请日：2005-12-16

申请人： Stephen G. Dick ,  Charles Dennean ,  Eldad Zeira ,  Jung-Lin Pan ,  Sung-Hyuk Shin ,  Ariela Zeira

发明人： Stephen G. Dick ,  Charles Dennean ,  Eldad Zeira ,  Jung-Lin Pan ,  Sung-Hyuk Shin ,  Ariela Zeira

IPC分类号： H04B7/216

CPC分类号： H04B7/2628 ,  H04B1/707 ,  H04B1/7077 ,  H04B1/7093 ,  H04J13/00 ,  H04J13/10

摘要： One out of sixteen preamble signatures is selected. A code is produced based on the selected preamble signature. The produced code is phase rotated to produce a processed preamble signature signal. The processed preamble signature signal is used in processing the CDMA RACH signal and the CDMA RACH signal is used to access a CDMA system.

摘要翻译： 选择十六个前缀签名中的一个。 基于所选择的前导签名生成代码。 产生的代码被相位旋转以产生经处理的前导签名信号。 经处理的前导签名信号用于处理CDMA RACH信号，CDMA RACH信号用于接入CDMA系统。

公开(公告)号：US20090046692A1

公开(公告)日：2009-02-19

申请号：US12258884

申请日：2008-10-27

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： H04B7/216

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

摘要： A method for the simultaneous reception of data from multiple sources having different spreading factors. A plurality of transmission response matrices are generated and grouped together for equal spreading factors. A plurality of spreading factor group matrices are assembled. A base matrix is formed based upon the spreading factor group matrix having a lowest spreading factor. An additional spreading factor group matrix is selected for consideration. Column placement reference index for the base matrix is derived. A reference location for the base matrix is derived. A column set from the selected spreading factor group matrix is derived. The column set is inserted into the base matrix. A total transmission response matrix is assembled.

摘要翻译： 一种用于从具有不同扩频因子的多个源同时接收数据的方法。 生成多个传输响应矩阵并将其分组在一起用于相等的扩展因子。 组合了多个扩频因子组矩阵。 基于具有最低扩展因子的扩展因子组矩阵形成基本矩阵。 选择一个附加的扩散因子组矩阵来考虑。 导出基础矩阵的列​​放置参考索引。 导出基础矩阵的参考位置。 导出从所选择的扩展因子组矩阵中设置的列。 列集合插入到基本矩阵中。 组合总传输响应矩阵。

公开(公告)号：US07460580B2

公开(公告)日：2008-12-02

申请号：US10878742

申请日：2004-06-28

申请人： Jung-Lin Pan ,  Ariela Zeira

发明人： Jung-Lin Pan ,  Ariela Zeira

IPC分类号： H04L27/30

CPC分类号： H04B1/7105 ,  H04B1/707

摘要： Data is estimated of a plurality of received spread spectrum signals. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector. 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： 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向量。 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：US07443828B2

公开(公告)日：2008-10-28

申请号：US10785866

申请日：2004-02-23

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： H04B7/216

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：US07408978B2

公开(公告)日：2008-08-05

申请号：US10657435

申请日：2003-09-08

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

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

IPC分类号： H04B1/707 ,  H04L27/28

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：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。