公开(公告)号：US20020141373A1

公开(公告)日：2002-10-03

申请号：US10080124

申请日：2002-02-21

Applicant: InterDigital Technology Corporation

Inventor： Parthapratim De ,  Ariela Zeira ,  Jung-Lin Pan ,  Raj Mani Misra

IPC: H04B007/216

CPC classification number: H04B1/7105 ,  H04B1/71052 ,  H04B2201/70707 ,  H04L25/0212

Abstract: 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.

Abstract translation: 码分多址基站用于在共享频谱上接收多个数据信号。 每个接收的数据信号经历类似的信道响应。 接收到的数据信号的组合信号通过共享频谱接收。 组合信号以芯片速率的倍数进行采样。 估计频道响应。 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的第一元素。 使用来自第一元素确定的因子来确定扩展数据向量的剩余元素。 使用所确定的扩展数据矢量的元素来估计数据信号的数据。

公开(公告)号：US20020131384A1

公开(公告)日：2002-09-19

申请号：US10080185

申请日：2002-02-21

Applicant: InterDigital Technology Corporation

Inventor： Parthapratim De ,  Ariela Zeira ,  Jung-Lin Pan ,  Raj Mani Misra

IPC: H04B007/216

CPC classification number: H04B1/7105 ,  H04B1/71052 ,  H04B2201/70707 ,  H04L25/0212

Abstract: 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 the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated at the multiple of the chip rate. The multiple chip rate estimated channel response is combined as an effective chip rate channel response. A spread data vector is determined using the effective samples, the effective channel response and a fourier transform. Data of the data signals is estimated using the spread data vector.

Abstract translation: 码分多址基站用于在共享频谱上接收多个数据信号。 每个接收的数据信号经历类似的信道响应。 接收的数据信号的组合信号通过共享频谱接收。 组合信号以芯片速率的倍数进行采样。 信道响应以芯片速率的倍数估计。 多码片速率估计信道响应被组合为有效的码片速率信道响应。 使用有效样本，有效信道响应和傅立叶变换来确定扩展数据向量。 使用扩展数据向量来估计数据信号的数据。

公开(公告)号：US20020126646A1

公开(公告)日：2002-09-12

申请号：US10080140

申请日：2002-02-21

Applicant: InterDigital Technology Corporation

Inventor： Parthapratim De ,  Ariela Zeira ,  Jung-Lin Pan ,  Raj Mani Misra

IPC: H04B007/216

CPC classification number: H04B1/7105 ,  H04B1/71052 ,  H04B2201/70707 ,  H04L25/0212

Abstract: A code division multiple access user equipment 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 the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A cross correlation matrix is determined using the estimated channel response. A subblock of the cross correlation matrix is selected. A Cholesky factor for the subblock is determined. The Cholesky factor is extended. The spread data vector is determined using the extended Cholesky factor, a version of the channel response and the samples. Data of the data signals is estimated using the spread data vector.

Abstract translation: 码分多址用户设备用于在共享频谱上接收多个数据信号。 每个接收的数据信号经历类似的信道响应。 接收的数据信号的组合信号通过共享频谱接收。 组合信号以芯片速率的倍数进行采样。 估计频道响应。 使用估计的信道响应来确定互相关矩阵。 选择互相关矩阵的子块。 确定子块的Cholesky因子。 Cholesky因子得到延长。 扩展数据向量使用扩展的Cholesky因子，信道响应的版本和样本来确定。 使用扩展数据向量来估计数据信号的数据。

公开(公告)号：US20020080765A1

公开(公告)日：2002-06-27

申请号：US10081809

申请日：2002-02-22

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Sung-Hyuk Shin ,  Steven G. Dick

IPC: H04B007/185

CPC classification number: H04W52/225 ,  H04W52/12 ,  H04W52/24

Abstract: Outer loop/weighted open loop power control method controls transmission power levels in a spread spectrum time division duplex communication base station. The base station receives a communication including a transmitted power level and measures its received power level. Based in part on the measured power level and the transmitted power level, a path loss estimate is determined. A quality of the path loss estimate is also determined. The transmission power level for a communication from the base station is based in part on weighting the path loss estimate in response to the estimate's quality.

Abstract translation: 外环/加权开环功率控制方法控制扩频时分双工通信基站中的发射功率电平。 基站接收包括发射功率电平的通信并测量其接收功率电平。 部分地基于测量的功率电平和发射功率电平，确定路径损耗估计。 路径损耗估计的质量也被确定。 来自基站的通信的发射功率电平部分地基于响应于估计的质量对路径损耗估计进行加权。

公开(公告)号：US20020080747A1

公开(公告)日：2002-06-27

申请号：US10080896

申请日：2002-02-22

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Sung-Hyuk Shin ,  Steven G. Dick

IPC: H04B007/216 ,  H04J003/00

CPC classification number: H04W52/225 ,  H04W52/12 ,  H04W52/24

Abstract: Outer loop/weighted open loop power control apparatus controls transmission power levels in a spread spectrum time division duplex communication user equipment (UE). The user equipment receives a communication including an transmitted power level and measures its received power level. Based in part on the measured power level and the transmitted power level, a path loss estimate is determined. A quality of the path loss estimate is also determined. The transmission power level for a communication from the user equipment is based on in part weighting the path loss estimate in response to the estimate's quality.

Abstract translation: 外环/加权开环功率控制装置控制扩频时分双工通信用户设备（UE）中的发射功率电平。 用户设备接收包括发射功率电平的通信并测量其接收功率电平。 部分地基于测量的功率电平和发射功率电平，确定路径损耗估计。 路径损耗估计的质量也被确定。 来自用户设备的通信的发射功率电平部分地基于估计的质量部分地加权路径损耗估计。

公开(公告)号：US20020075832A1

公开(公告)日：2002-06-20

申请号：US10077565

申请日：2002-02-15

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Ariela Zeira

IPC: H04B007/216

CPC classification number: H04B1/707 ,  H04B7/0697 ,  H04L1/0618 ,  H04L1/0631 ,  H04L25/0202 ,  H04L25/03866

Abstract: The present invention is an apparatus for a user equipment (UE) to transmit a data field of symbols. A first data field of symbols is generated and encoded d to produce a second data field having complex conjugates of the symbols of the data field. The first and second data fields are then spread, wherein the first data field is spread using a first channelization code and the second data field is spread using a second channelization code. Each of the channelization codes are uniquely associated with one of a first and second antenna. An RF signal including the first and second spread data fields is then transmitted over a first and second antenna.

Abstract translation: 本发明是一种用于用户设备（UE）发送符号数据字段的装置。 产生符号的第一数据字段并且被编码d以产生具有数据字段的符号的复共轭的第二数据字段。 然后扩展第一和第二数据字段，其中使用第一信道化码扩展第一数据字段，并且使用第二信道化码扩展第二数据字段。 每个信道化码与第一和第二天线之一唯一地相关联。 然后，通过第一和第二天线发射包括第一和第二扩展数据字段的RF信号。

公开(公告)号：US20040223538A1

公开(公告)日：2004-11-11

申请号：US10748544

申请日：2003-12-30

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira

IPC: H04B001/707

CPC classification number: H04B1/123 ,  H04B1/7105 ,  H04B1/71072 ,  H04L25/03006

Abstract: A plurality of signals are received in a shared spectrum. Samples of the received user signals are produced as a received vector. The received vector is segmented into a plurality of segments. For each segment, successively determining symbols for each user or group of signals (the group of signals having similar received power) by determining symbols for one user/group and removing a contribution of that one user/group from the received vector. The determined symbols corresponding to each segment are assembled into a data vector.

Abstract translation: 在共享频谱中接收多个信号。 接收到的用户信号的样本作为接收向量产生。 接收的矢​​量被分割成多个段。 对于每个段，通过确定一个用户/组的符号并从接收的向量中去除该一个用户/组的贡献，连续地确定每个用户或信号组（具有类似的接收功率的信号组）的符号。 对应于每个段的确定的符号被组合成数据向量。

公开(公告)号：US20040202151A1

公开(公告)日：2004-10-14

申请号：US10731456

申请日：2003-12-09

Applicant: InterDigital Technology Corporation

Inventor： Alexander Reznik ,  Ariela Zeira

IPC: H04L012/66

CPC classification number: H04B1/7103 ,  H04B1/71055 ,  H04B2001/71077 ,  H04B2201/70705

Abstract: A first detector receives a received signal and extracts the data signals from the received signal. A hard decision converter converts soft symbols outputted by the first detector into hard symbols. An interference canceller extracts the voice signals from the received signal. A second detector is connected to the output of the interference canceller, and extracts the individual voice signals. The second detector is a different detector type than the first detector.

Abstract translation: 第一检测器接收接收信号并从接收信号中提取数据信号。 硬判决转换器将由第一检测器输出的软符号转换成硬符号。 干扰消除器从接收到的信号中提取语音信号。 第二检测器连接到干扰消除器的输出，并提取各个声音信号。 第二检测器是与第一检测器不同的检测器类型。

公开(公告)号：US20040165567A1

公开(公告)日：2004-08-26

申请号：US10785866

申请日：2004-02-23

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  June-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC: H04B007/216

CPC classification number: H04B1/71052 ,  H04B1/7105 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: 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.

公开(公告)号：US20040141483A1

公开(公告)日：2004-07-22

申请号：US10755759

申请日：2004-01-12

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Sung-Hyuk Shin ,  Stephen G. Dick

IPC: H04B007/216

CPC classification number: H04W52/225 ,  H04W52/12 ,  H04W52/24

Abstract: A transmission power level for a user equipment in a wireless time division duplex communication system using code division multiple access is determined. An interference level is measured. A pathloss estimate is determined. A long term average of pathloss estimates is determined. A first weighting factor, null, is determined by the determined pathloss estimate, producing a weighted pathloss estimate. (1nullnull) is multiplied to the determined long term average of pathloss estimates, producing a weighted long term pathloss estimate. A target signal to interference ratio is provided. The target signal to interference ratio is updated using outer loop power commands. A transmission power level of the user equipment is determined by adding the weighted pathloss estimate to the weighted long term pathloss estimate to the measured interference level to the updated target signal to interference ratio to a constant value.

Abstract translation: 确定使用码分多址的无线时分双工通信系统中的用户设备的发送功率电平。 测量干扰电平。 确定路径损耗估计。 确定路径损耗估计的长期平均值。 第一加权因子α由确定的路径损耗估计确定，产生加权路径损耗估计。 （1-α）乘以确定的路径损耗估计的长期平均值，产生加权的长期路径损耗估计。 提供目标信号与干扰比。 使用外环功率命令更新目标信号与干扰比。 通过将加权的路径损耗估计与加权的长期路径损耗估计相加到所测量的干扰电平，将更新的目标信号干扰比加到常数值来确定用户设备的发射功率电平。