公开(公告)号：US20040247018A1

公开(公告)日：2004-12-09

申请号：US10878742

申请日：2004-06-28

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan ,  Ariela Zeira

IPC: H04B001/707

CPC classification number: H04B1/7105 ,  H04B1/707

Abstract: 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.

公开(公告)号：US20040196781A1

公开(公告)日：2004-10-07

申请号：US10831254

申请日：2004-04-23

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Jung-Lin Pan

IPC: H04J011/00 ,  H04B007/216

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.

公开(公告)号：US20040001528A1

公开(公告)日：2004-01-01

申请号：US10064307

申请日：2002-07-01

Applicant: InterDigital Technology Corporation

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

IPC: H04B001/69

CPC classification number: H04J13/0044 ,  H04B1/707 ,  H04B1/71052 ,  H04B1/71055 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blocks. Each block has one dimension of a length M and another dimension of a length based on in part M and the spreading factor of each communication. M is based on the scrambling code period. Data of the received plurality of communication signals is received using the constructed system response matrix.

公开(公告)号：US20020159415A1

公开(公告)日：2002-10-31

申请号：US10077527

申请日：2002-02-15

Applicant: InterDigital Technology Corporation

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

IPC: H04B007/216

CPC classification number: H04B1/71052 ,  H04B1/71055

Abstract: A time division duplex using code division multiple access base station receives a plurality of data signals in a time slot. Each data signal experiences a similar channel response. The base station 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.

Abstract translation: 使用码分多址基站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。 基站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：US20020159383A1

公开(公告)日：2002-10-31

申请号：US10080120

申请日：2002-02-21

Applicant: InterDigital Technology Corporation

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

IPC: H04J011/00 ,  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 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。 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：US20020131383A1

公开(公告)日：2002-09-19

申请号：US10080022

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. The spread data vector is determined using order recursions by determining a first spread data estimate using an element from the cross correlation matrix and recursively determining further estimates using additional elements of the cross correlation matrix. 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。 通过使用来自互相关矩阵的元素确定第一扩展数据估计并使用互相关矩阵的附加元素递归地确定另外的估计，使用顺序递归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：US20040131010A1

公开(公告)日：2004-07-08

申请号：US10657435

申请日：2003-09-08

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan ,  Yuejin Huang ,  Ariela Zeira

IPC: H04J011/00

CPC classification number: H04B1/71052 ,  H04L25/03159 ,  H04L2025/03414 ,  H04L2025/03522 ,  H04L2025/03605

Abstract: 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.

Abstract translation: 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：US20040013171A1

公开(公告)日：2004-01-22

申请号：US10327299

申请日：2002-12-20

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan ,  Younglok Kim ,  Donald Grieco

IPC: H04B001/707

CPC classification number: H04B1/71055 ,  H04B1/1027 ,  H04B1/7103 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/03006

Abstract: Data from a plurality of communications is transmitted in a code division multiple access communication system. The transmitted communications are received. Gain factors are determined for at least one of the received communications. Data of the received communications is detected using a scaling factor derived from the determined gain values.

Abstract translation: 来自多个通信的数据在码分多址通信系统中发送。 发送的通信被接收。 为接收到的通信中的至少一个确定增益因子。 使用从确定的增益值导出的缩放因子检测接收到的通信的数据。

公开(公告)号：US20030179699A1

公开(公告)日：2003-09-25

申请号：US10419485

申请日：2003-04-21

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Jung-Lin Pan

IPC: H04J011/00

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：US20030036358A1

公开(公告)日：2003-02-20

申请号：US10003487

申请日：2001-11-01

Applicant: InterDigital Technology Corporation

Inventor： Jung-Lin Pan

IPC: H04B001/10

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

Abstract: Potentially interfering user equipments with respect to a particular UE are identified in a time division duplex communication system using code division multiple access. Timeslots used for uplink transmissions by a plurality of nearby UEs are identified. Each nearby UE is not in a cell of the particular UE and is geographically close to the particular UE. At the particular UE, an interference level is measured in each of the identified timeslots. The identified timeslots are classified using the measured interference level. Non-interfering and interfering UEs are determined using the identified timeslots for each UE and the timeslot classification.