公开(公告)号：US20020154619A1

公开(公告)日：2002-10-24

申请号：US10080123

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 as a channel response matrix at the multiple of the chip rate. A padded version of a spread data vector of a size corresponding to the multiple chip rate using a column of the channel response matrix, the estimated channel response matrix, the samples and a fourier transform. The spread data vector is estimated by eliminating elements of the padded version so that the estimated spread data vector is of a size corresponding to the chip rate.

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。 信道响应被估计为码片速率倍数的信道响应矩阵。 使用信道响应矩阵的列，估计的信道响应矩阵，样本和傅里叶变换来对应于多码片速率的大小的扩展数据矢量的填充版本。 通过消除填充版本的元素来估计扩展数据向量，使得估计的扩展数据向量具有与码片速率相对应的大小。

公开(公告)号：US20020136160A1

公开(公告)日：2002-09-26

申请号：US10080212

申请日：2002-02-21

Applicant: InterDigital Technology Corporation

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

IPC: H04B007/216 ,  H04J011/00

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 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：US20020015393A1

公开(公告)日：2002-02-07

申请号：US09910329

申请日：2001-07-20

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan ,  Ariela Zeira

IPC: H04B007/216 ,  H04J003/00

CPC classification number: H04W72/0446 ,  H04B7/2618 ,  H04L5/0073 ,  H04L5/14 ,  H04W52/143 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/082 ,  H04W72/1268 ,  H04W72/1273

Abstract: A particular cell of a hybrid time division multiple access/code division multiple access communication system has a base station and a plurality of user requirements. Timeslots having unacceptable interference for the uplink are estimated. Timeslots having unacceptable interference for the downlink are estimated. An availability list is produced. The availability list indicates available uplink and downlink timeslots having acceptable interference levels. Uplink and downlink timeslots are assigned using the availability list.

Abstract translation: 混合时分多址/码分多址通信系统的特定小区具有基站和多个用户需求。 估计对于上行链路具有不可接受的干扰的时隙。 估计对于下行链路具有不可接受的干扰的时隙。 生成可用性列表。 可用性列表指示具有可接受的干扰电平的可用上行链路和下行链路时隙。 上行链路和下行链路时隙使用可用性列表进行分配。

公开(公告)号：US20040196782A1

公开(公告)日：2004-10-07

申请号：US10618227

申请日：2003-07-11

Applicant: InterDigital Technology Corporation

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

IPC: H04J011/00

CPC classification number: H04L25/0232 ,  H04B2001/6912 ,  H04L27/103 ,  H04L27/2647

Abstract: 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.

Abstract translation: 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：US20030194969A1

公开(公告)日：2003-10-16

申请号：US10427174

申请日：2003-05-01

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan

IPC: H04Q007/20

CPC classification number: H04L5/0073 ,  H04B7/2618 ,  H04B2201/709709 ,  H04L5/0037 ,  H04W24/10 ,  H04W28/04 ,  H04W72/082 ,  H04W88/08

Abstract: A wireless time division duplex/code division multiple access user equipment measures an interference level in time slots. The interference measurements are transmitted. The transmitted interference measurements enable for each of a plurality of nearby user equipments potentially near the user equipment not in a cell of the user equipment to classify timeslots and to determine non-interfering and interfering ones of the nearby user equipments using the timeslots classifying. Communications are transmitted over timeslots assigned by a received timeslot assignment. The received timeslot assignment based on the determined non-interfering and interfering ones of the nearby user equipments. The received timeslot assignment is received. Communications are received over timeslots assigned by the received timeslot assignment.

Abstract translation: 无线时分双工/码分多址用户设备测量时隙中的干扰电平。 传输干扰测量。 所发送的干扰测量使得潜在地在用户设备附近的多个附近的用户设备中的每一个不在用户设备的小区中对时隙进行分类，并使用时隙分类来确定附近的用户设备中的不干扰和干扰的用户设备。 通过接收时隙分配分配的时隙发送通信。 所接收的时隙分配基于所确定的附近用户设备的不干扰和干扰的。 收到接收到的时隙分配。 通过接收时隙分配分配的时隙接收通信。

公开(公告)号：US20030021249A1

公开(公告)日：2003-01-30

申请号：US10174121

申请日：2002-06-18

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Jung-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.

Abstract translation: 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：US20020191577A1

公开(公告)日：2002-12-19

申请号：US10004370

申请日：2001-11-01

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan ,  Ariela Zeira

IPC: H04B007/216

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

Abstract: Data is to be estimated from a received plurality of data signals in a code division multiple access communication system. The data signals are transmitted in a shared spectrum at substantially a same time. A combined signal of the transmitted data signals are received over the shared spectrum and sampled. A channel response for the transmitted data signals is estimated. Data of the data signals is estimated using the samples and the estimated channel response. The data estimation uses a fourier transform based data estimating approach. An error in the data estimation introduced from a circulant approximation used in the fourier transform based approach is iteratively reduced.

Abstract translation: 在码分多址通信系统中，从接收到的多个数据信号中估计数据。 数据信号在基本上同时在共享频谱中发送。 传输的数据信号的组合信号通过共享频谱接收并采样。 估计发送的数据信号的信道响应。 使用样本和估计的信道响应来估计数据信号的数据。 数据估计使用基于傅里叶变换的数据估计方法。 从基于傅立叶变换的方法中使用的循环近似引入的数据估计中的误差被迭代地减少。

公开(公告)号：US20020145989A1

公开(公告)日：2002-10-10

申请号：US10052943

申请日：2001-11-07

Applicant: InterDigital Technology Corporation

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

IPC: H04B007/216

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

Abstract: A transmitter site transmits a plurality of data signals 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 first element of a spread data vector is determined using the combined signal samples and the estimated channel response. Using a factor from the first element determination, remaining elements of the spread data vector are determined. The data of the data signals is determined using the determined elements of the spread data vector.

Abstract translation: 发射机站在码分多址通信系统中通过共享频谱发送多个数据信号。 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的第一元素。 使用来自第一元素确定的因子，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确定数据信号的数据。

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。