公开(公告)号：US06885654B2

公开(公告)日：2005-04-26

申请号：US09814346

申请日：2001-03-22

Applicant: Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

Inventor： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

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

CPC classification number: H04B1/71052 ,  H04B1/71055

Abstract: A combined signal is received over a shared spectrum in a time slot in a time division duplex communication system using code division multiple access. Each data signal experiences a similar channel response. The similar channel response is estimated. A matrix representing a channel of the data signals based on in part the estimated channel response is constructed. A spread data vector is determined based on in part a fast fourier transform (FFT) decomposition of a circulant version of the channel matrix. The spread data vector is despread to recover data from the received combined signal.

Abstract translation: 在使用码分多址的时分双工通信系统的时隙中，通过共享频谱接收组合信号。 每个数据信号经历类似的信道响应。 估计类似的信道响应。 基于部分估计的信道响应，构成表示数据信号的信道的矩阵。 部分地基于信道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接收到的组合信号中恢复数据。

公开(公告)号：US20050002356A1

公开(公告)日：2005-01-06

申请号：US10901796

申请日：2004-07-29

Applicant: Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira

Inventor： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira

IPC: H04B17/00 ,  H04B7/216 ,  H04J1/00 ,  H04J3/00 ,  H04L1/20 ,  H04Q7/00

CPC classification number: H04B1/7103 ,  H04B1/7105 ,  H04B1/71055 ,  H04B1/71057 ,  H04L1/20

Abstract: 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：US06747947B2

公开(公告)日：2004-06-08

申请号：US10419485

申请日：2003-04-21

Applicant: Younglok Kim ,  Jung-Lin Pan

Inventor： Younglok Kim ,  Jung-Lin Pan

IPC: H04J1300

CPC classification number: H04J13/12 ,  H04J13/0044 ,  H04J13/0048 ,  H04J13/20

Abstract: A code indexing system for a CDMA communication station that uses orthogonal variable spreading factor (OVSF) codes has a single number mapped to each code. The new code number itself not only provides the code signature, but it is also used for the OVSF code generation. In addition, the system provides easy and fast generation of the available code list without the help of look-up table. This capability improves the dynamic code assignment.

Abstract translation: 使用正交可变扩频因子（OVSF）码的CDMA通信站的码索引系统具有映射到每个码的单个号码。 新的代码本身不仅提供了代码签名，而且还用于生成OVSF代码。 此外，系统提供了方便快捷地生成可用代码列表，而无需查找表的帮助。 此功能可以改进动态代码分配。

公开(公告)号：US06608859B2

公开(公告)日：2003-08-19

申请号：US10081304

申请日：2002-02-20

Applicant: Parthapratim De ,  Jung-Lin Pan ,  Ariela Zeira

Inventor： Parthapratim De ,  Jung-Lin Pan ,  Ariela Zeira

IPC: H04B169

CPC classification number: H04B1/7105

Abstract: A code division multiple access base station receives K data signals over a shared spectrum. The base station receives and samples a combined signal having the K transmitted data signals. A combined channel response matrix is produced. A block column of a cross correlation matrix is determined using the combined channel response matrix. Each block entry of the block column is a K by K matrix. Each block entry of the block column is a K by K matrix. A fourier transform of a complex conjugate transpose of the combined channel response matrix multiplied to the combined signal samples is taken. An inverse of a fourier transform of each block entry is multiplied to a result of the fourier transform to produce a fourier transform of the data vector. An inverse fourier transform of the data vector fourier transform is taken to produce data of the K signals.

公开(公告)号：US20130100995A1

公开(公告)日：2013-04-25

申请号：US13706811

申请日：2012-12-06

Applicant: Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

Inventor： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

IPC: H04L27/26

CPC classification number: H04L5/0007 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0073 ,  H04L27/2601 ,  H04L27/2647

Abstract: A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method are disclosed. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data.

Abstract translation: 公开了一种混合正交频分多址（OFDMA）无线发射/接收单元（WTRU）和方法。 WTRU包括发射机和接收机。 接收机处理接收到的数据以恢复使用OFDMA映射到子载波的数据。 接收机通过从多用户扩展数据分离用户数据并从非扩展数据中恢复第二输入数据来恢复第一输入数据。

公开(公告)号：US08284854B2

公开(公告)日：2012-10-09

申请号：US12329985

申请日：2008-12-08

Applicant: Jaeyoung Kwak ,  Jung-Lin Pan ,  Ariela Zeira

Inventor： Jaeyoung Kwak ,  Jung-Lin Pan ,  Ariela Zeira

IPC: H04L1/02

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

Abstract: 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.

Abstract translation: 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：US20120195358A1

公开(公告)日：2012-08-02

申请号：US13439350

申请日：2012-04-04

Applicant: Jung-Lin Pan

Inventor： Jung-Lin Pan

IPC: H04L27/01 ,  H04B1/06

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

Abstract: 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.

Abstract translation: 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：US20120008617A1

公开(公告)日：2012-01-12

申请号：US13236147

申请日：2011-09-19

Applicant: Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

Inventor： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

IPC: H04W88/02

CPC classification number: H04L5/0007 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0073 ,  H04L27/2601 ,  H04L27/2647

Abstract: A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method are disclosed. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data.

Abstract translation: 公开了一种混合正交频分多址（OFDMA）无线发射/接收单元（WTRU）和方法。 WTRU包括发射机和接收机。 接收机处理接收到的数据以恢复使用OFDMA映射到子载波的数据。 接收机通过从多用户扩展数据分离用户数据并从非扩展数据中恢复第二输入数据来恢复第一输入数据。

公开(公告)号：US20110206015A1

公开(公告)日：2011-08-25

申请号：US13099674

申请日：2011-05-03

Applicant: Jung-Lin Pan

Inventor： Jung-Lin Pan

IPC: H04B7/216 ,  H04W4/00

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

Abstract: 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.

Abstract translation: 一种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：US20110142094A1

公开(公告)日：2011-06-16

申请号：US12984101

申请日：2011-01-04

Applicant: Jung-Lin Pan ,  Guodong Zhang ,  Yingming Tsai

Inventor： Jung-Lin Pan ,  Guodong Zhang ,  Yingming Tsai

IPC: H04B1/69

CPC classification number: H04B1/711 ,  H04L5/026 ,  H04L2025/03414

Abstract: An orthogonal frequency division multiplexing (OFDM)-code division multiple access (CDMA) system is disclosed. The system includes a transmitter and a receiver. At the transmitter, a spreading and subcarrier mapping unit spreads an input data symbol with a complex quadratic sequence code to generate a plurality of chips and maps each chip to one of a plurality of subcarriers. An inverse discrete Fourier transform is performed on the chips mapped to the subcarriers and a cyclic prefix (CP) is inserted to an OFDM frame. A parallel-to-serial converter converts the time-domain data into a serial data stream for transmission. At the receiver, a serial-to-parallel converter converts received data into multiple received data streams and the CP is removed from the received data. A discrete Fourier transform is performed on the received data streams and equalization is performed. A despreader despreads an output of the equalizer to recover the transmitted data.

Abstract translation: 公开了一种正交频分复用（OFDM）码分多址（CDMA）系统。 该系统包括发射机和接收机。 在发射机处，扩展和副载波映射单元利用复数二次序列码扩展输入数据符号，以产生多个码片，并将每个码片映射到多个副载波中的一个。 对映射到子载波的芯片执行逆离散傅立叶变换，并且将循环前缀（CP）插入到OFDM帧中。 并行到串行转换器将时域数据转换为串行数据流以进行传输。 在接收机处，串并转换器将接收的数据转换成多个接收的数据流，并从接收的数据中移除CP。 对接收的数据流执行离散付里叶变换，并进行均衡。 去扩展器对均衡器的输出进行解扩以恢复发送的数据。