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：US20050180495A1

公开(公告)日：2005-08-18

申请号：US11100901

申请日：2005-04-07

申请人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

发明人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

IPC分类号： H04B1/707 ,  H04B1/7097 ,  H04B7/204 ,  H04L5/22 ,  H04Q7/38

CPC分类号： H04B1/71052 ,  H04B1/71055

摘要： A circuit for use in a receiver receives a plurality of code division multiple access data signals simultaneously. Each data signal experiences a similar channel response. The circuit receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based in part on the estimated channel response. A spread data vector is determined based in part on a fast Fourier transform (FFT) decomposition of a circulant version of the channel response matrix or channel correlation matrix. The spread data vector is despread to recover data from the matrix.

摘要翻译： 用于接收机的电路同时接收多个码分多址数据信号。 每个数据信号经历类似的信道响应。 电路在时隙中通过共享频谱接收组合信号。 组合信号包括多个数据信号。 组合信号以组合信号的码片速率的倍数进行采样。 估计类似的信道响应。 部分基于估计的信道响应构建信道响应矩阵或信道相关矩阵。 部分地基于信道响应矩阵或信道相关矩阵的循环版本的快速傅里叶变换（FFT）分解来确定扩展数据向量。 扩展数据向量被解扩以从矩阵中恢复数据。

公开(公告)号：US06879578B2

公开(公告)日：2005-04-12

申请号：US10077509

申请日：2002-02-15

申请人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

发明人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

IPC分类号： H04B1/707 ,  H04B1/7097 ,  H04B7/204 ,  H04L5/22 ,  H04Q7/38 ,  H04B7/216

CPC分类号： H04B1/71052 ,  H04B1/71055

摘要： A time division duplex using code division multiple access user equipment receives a plurality of data signals in a time slot. Each data signal experiences a similar channel response. The user equipment receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based on in part the estimated channel response. A spread data vector is determined based on in part a fast fourier transform (FFT) decomposition of a circulant version of the channel response or channel correlation matrix. The spread data vector is despread to recover data from the matrix.

摘要翻译： 使用码分多址用户设备的时分双工在时隙中接收多个数据信号。 每个数据信号经历类似的信道响应。 用户设备在时隙中通过共享频谱接收组合信号。 组合信号包括多个数据信号。 组合信号以组合信号的码片速率的倍数进行采样。 估计类似的信道响应。 基于估计的信道响应部分构建信道响应矩阵或信道相关矩阵。 基于信道响应或信道相关矩阵的循环版本的部分快速傅立叶变换（FFT）分解来确定扩展数据向量。 扩展数据向量被解扩以从矩阵中恢复数据。

公开(公告)号：US20120314740A1

公开(公告)日：2012-12-13

申请号：US13535908

申请日：2012-06-28

申请人： Jaeyoung Kwak ,  Jung-Lin Pan ,  Ariela Zeira

发明人： Jaeyoung Kwak ,  Jung-Lin Pan ,  Ariela Zeira

IPC分类号： H04B1/38 ,  H04L27/01 ,  H04B1/10

CPC分类号： H04B1/71055 ,  H04B1/7093 ,  H04B1/71072 ,  H04B7/0854 ,  H04L1/06 ,  H04L25/0212 ,  H04L25/0226 ,  H04L25/03305 ,  H04L25/03318

摘要： A plurality of data signals are received over an antenna array having a plurality of antenna elements. The data signals are transmitted over a shared spectrum in a wireless communication system. A signal having each of the data signals is received over each antenna element. The plurality of data signals are grouped into a plurality of groups. The received signals of the antenna elements are matched filtered for a first group of the plurality of groups, producing a matched filtered result. Data is jointly detected of the first group using the matched filtered result. An interference correction signal is constructed using the detected data for each antenna element. The interference cancelled result is subtracted from the received signal of each antenna element, producing an interference cancelled result for each antenna element. Data is successively detected for remaining groups using the interference cancelled result for each antenna element.

摘要翻译： 通过具有多个天线元件的天线阵列接收多个数据信号。 数据信号通过无线通信系统中的共享频谱传输。 在每个天线元件上接收具有每个数据信号的信号。 多个数据信号被分组成多个组。 天线元件的接收信号对于多个组中的第一组进行匹配滤波，产生匹配的滤波结果。 使用匹配的过滤结果联合检测第一组的数据。 使用每个天线元件的检测数据构建干扰校正信号。 从每个天线元件的接收信号中减去干扰消除结果，产生每个天线元件的干扰消除结果。 使用每个天线元件的干扰消除结果对剩余组连续检测数据。

公开(公告)号：US20100254440A1

公开(公告)日：2010-10-07

申请号：US12819516

申请日：2010-06-21

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： 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：US20100240411A1

公开(公告)日：2010-09-23

申请号：US12793060

申请日：2010-06-03

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： H04M1/00

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：US07715305B2

公开(公告)日：2010-05-11

申请号：US11370113

申请日：2006-03-07

申请人： Jung-Lin Pan ,  Ariela Zeira ,  Parthapratim De

发明人： Jung-Lin Pan ,  Ariela Zeira ,  Parthapratim De

IPC分类号： H04J11/00 ,  H04B7/216 ,  H04B1/00

CPC分类号： H04B1/71052 ,  H04B1/71055

摘要： A method of recovering data for use in a receiver that simultaneously receives a plurality of code division multiple access data signals, each data signal experiencing a similar channel response. A combined signal over the shared spectrum in a time slot is received and sampled. The combined signal comprises the plurality of data signals. The sampled signal is used to estimate the similar channel response, and a channel response matrix is constructed. A channel correlation matrix is constructed based in part on the estimated channel response matrix. A fast Fourier transform (FFT) decomposition of a circulant matrix approximation of the channel correlation matrix, and the sampled data signals, are used to determine a spread data vector. The spread data vector is despread to recover data from the matrix.

摘要翻译： 一种恢复用于同时接收多个码分多址数据信号的接收机中的数据的方法，每个数据信号经历类似的信道响应。 在时隙中的共享频谱上的组合信号被接收和采样。 组合信号包括多个数据信号。 采样信号用于估计类似的信道响应，并构建信道响应矩阵。 部分基于估计的信道响应矩阵构建信道相关矩阵。 使用信道相关矩阵和采样数据信号的循环矩阵近似的快速傅立叶变换（FFT）分解来确定扩展数据向量。 扩展数据向量被解扩以从矩阵中恢复数据。

公开(公告)号：US20090323769A1

公开(公告)日：2009-12-31

申请号：US12555307

申请日：2009-09-08

申请人： Jung-Lin Pan ,  Ariela Zeira

发明人： Jung-Lin Pan ,  Ariela Zeira

IPC分类号： H04B1/69

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.

公开(公告)号：US20090201905A1

公开(公告)日：2009-08-13

申请号：US12424914

申请日：2009-04-16

申请人： Jaeyoung Kwak ,  Donald M. Grieco ,  Jung-Lin Pan ,  Ariela Zeira

发明人： Jaeyoung Kwak ,  Donald M. Grieco ,  Jung-Lin Pan ,  Ariela Zeira

IPC分类号： H04B7/216

CPC分类号： H04B1/7103 ,  H04B1/70735 ,  H04B17/327 ,  H04B2201/70701

摘要： A method and apparatus for estimating channelization codes in a wireless transmit/receive unit (WTRU) using blind code detection (BCD). A WTRU receives communication bursts and detects a midamble in the received burst. A candidate code list is generated in accordance with the detected midamble. The candidate code list includes channelization codes intended for both the intended WTRU and other WTRUs. Active channelization codes among the codes in the candidate list are identified, and the identified codes are forwarded to a multi-user detector (MUD). Since the orthogonal variable spreading factor code maintains the orthogonality between codes of different SF, SFs of other WTRUs follow the SF of the intended WTRU. Moreover, since the data for other WTRUs is not used in symbol processing after MUD, the performance of MUD for the intended WTRU is preserved with the SF ambiguity of other WTRUs.

摘要翻译： 一种使用盲码检测（BCD）估计无线发射/接收单元（WTRU）中的信道化码的方法和装置。 WTRU接收通信突发并检测接收到的突发中的中间码。 根据检测到的中间码产生候选码列表。 候选代码列表包括旨在用于预期的WTRU和其他WTRU的信道化代码。 识别候选列表中的代码之间的主动信道化代码，并将所识别的代码转发到多用户检测器（MUD）。 由于正交可变扩频因子码维持不同SF的码之间的正交性，其他WTRU的SF遵循预期的WTRU的SF。 此外，由于在MUD之后的其他WTRU的数据不用于符号处理，所以对于预定的WTRU的MUD的性能由其他WTRU的SF模糊性来保留。