公开(公告)号：US20030218998A1

公开(公告)日：2003-11-27

申请号：US10153477

申请日：2002-05-22

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Ariela Zeira

IPC: H04B007/216

CPC classification number: H04B1/7105 ,  G06F17/16

Abstract: Data is to be detected in a wireless communication system. A plurality of communication signals are received. A solution for estimating data of the received communication signals is modeled using a linear system requiring a matrix inversion. Columns or rows of an approximate Cholesky factor are determined. A difference between the determined columns or rows is determined. If the determined difference is less than a threshold, subsequent columns or rows are determined by previously determined columns or rows. The data of the received communication signals is estimated using the approximate Cholesky factor.

Abstract translation: 将在无线通信系统中检测数据。 接收多个通信信号。 用于估计接收到的通信信号的数据的解决方案是使用需要矩阵求逆的线性系统来建模的。 确定近似Cholesky因子的列或行。 确定确定的列或行之间的差异。 如果所确定的差值小于阈值，则通过先前确定的列或行来确定随后的列或行。 接收到的通信信号的数据使用近似的Cholesky因子来估计。

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：US20030123418A1

公开(公告)日：2003-07-03

申请号：US10034824

申请日：2001-12-27

Applicant: InterDigital Technology Corporation

Inventor： Ryan Samuel Buchert ,  Chayil Timmerman ,  Younglok Kim

IPC: H04J003/00

CPC classification number: G06F7/24 ,  H04J3/047

Abstract: An insertion sorter circuit and method are provided which are particularly useful for sorting channel response values of a communication signal. The sorter circuit includes a series of sorter elements which each have a register. The circuit is configured to cascade values downwardly when one register receives a greater value than it has stored, which value is not greater than the value stored in any upstream register. At the end of processing the values, the most significant values are stored in the registers, the sum of which are the channel power estimate. The channel noise variance is obtainable by applying a system dependent scaling factor to the sum of the least significant values processed.

Abstract translation: 提供了一种插入分拣机电路和方法，其特别用于对通信信号的通道响应值进行排序。 分拣机电路包括各自具有寄存器的一系列分拣机元件。 该电路被配置为当一个寄存器接收到比它存储的值更大的值时向下级联值，该值不大于存储在任何上游寄存器中的值。 在处理这些值的最后，最重要的值存储在寄存器中，其总和是信道功率估计。 通过将系统相关的缩放因子应用于所处理的最低有效值的和来获得信道噪声方差。

公开(公告)号：US20020136188A1

公开(公告)日：2002-09-26

申请号：US10034793

申请日：2001-12-27

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim

IPC: H04B007/216

CPC classification number: H04B1/71055 ,  H04B7/0669 ,  H04L1/0618

Abstract: The present invention is a method and system for receiving data transmitted using block space time transmit diversity (BSTTD) in a code division multiple access (CDMA) communication system. The system comprises a transmitter, for transmitting a first data field using a first antenna and a second data field using a second antenna, and a receiver. The receiver includes an antenna for receiving the first and second transmitted data fields, and a BSTTD joint detector which determines symbols of the first and second transmitted data fields using a minimum mean square error block linear equalizer model and an approximated Cholesky decomposition of the model.

Abstract translation: 本发明是一种用于在码分多址（CDMA）通信系统中接收使用块空时发射分集（BSTTD）传输的数据的方法和系统。 该系统包括用于使用第一天线发送第一数据字段的发射机和使用第二天线的第二数据字段以及接收机。 接收机包括用于接收第一和第二传输数据字段的天线以及使用最小均方误差块线性均衡器模型和模型的近似Cholesky分解来确定第一和第二传输数据字段的符号的BSTTD联合检测器。

公开(公告)号：US20020089953A1

公开(公告)日：2002-07-11

申请号：US10071917

申请日：2002-02-08

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Zeira Ariela

IPC: H04B007/216

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

Abstract: The present invention is a method and 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: 本发明是用于用户设备（UE）发送符号数据字段的方法和装置。 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。