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：US20020097699A1

公开(公告)日：2002-07-25

申请号：US10107465

申请日：2002-03-27

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 a method for transmitting a data field of symbols. A data field of symbols is generated and spread using a first channelization code, producing a first spread data field. The data field is again spread using a second channelization code, producing a second spread data field. Each of the channelization codes are uniquely associated with one of a first and second antenna. Then an RF signal including the first and second spread data fields is transmitted over the first and second antenna.

Abstract translation: 本发明是用于发送符号数据字段的方法。 使用第一信道化码产生和扩展符号的数据字段，产生第一扩展数据字段。 使用第二信道化码再次扩展数据字段，产生第二扩展数据字段。 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：US20040170229A1

公开(公告)日：2004-09-02

申请号：US10792336

申请日：2004-03-03

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim

IPC: H04B007/02

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：US20030086380A1

公开(公告)日：2003-05-08

申请号：US10171285

申请日：2002-06-13

Applicant: InterDigital Technology Corporation

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

IPC: H04J003/00

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

Abstract: Method and apparatus for interference signal code power noise variance estimation employing a reduced number of samples utilizing the equation 1 null ^ n 2 = T null null i = 1 N sample null null h n null ( i ) null 2 , where 2 T = G null null null ( r ) N sample , where NsamplenullLchestnullNp1nullKmax, where 3 null null ( r ) = [ 1 + ( 1 r - 1 ) null ln null ( 1 - r ) ] - 1 and where 4 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: 5 null ^ n 2 = 1 KW null null j = 1 K null null i = 1 W null null h i ( j ) - h ^ i ( j ) null 2 , where nulli(j) are the channel estimates after the post processing and the noise variance estimates {circumflex over (null)}nnull12, and the initial values of nulli(j) are all zeros.

公开(公告)号：US20020093927A1

公开(公告)日：2002-07-18

申请号：US10071903

申请日：2002-02-08

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 a method and apparatus for a base station to transmit a data field of symbols. A first data field of symbols is generated and encoded 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: 本发明是用于基站发送符号数据字段的方法和装置。 生成并编码符号的第一数据字段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：US20020080746A1

公开(公告)日：2002-06-27

申请号：US10079107

申请日：2002-02-20

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 a method for transmitting a data field of symbols. A first data field of symbols is generated and encoded 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: 本发明是用于发送符号数据字段的方法。 生成并编码符号的第一数据字段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：US20040202233A1

公开(公告)日：2004-10-14

申请号：US10834321

申请日：2004-04-28

Applicant: InterDigital Technology Corporation

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

IPC: H04B001/707

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.

Abstract translation: 接收多个通信信号。 每个通信信号具有相关代码。 至少两个通信信号具有不同的扩展因子。 相关代码具有扰码周期。 总系统响应矩阵具有块。 每个块具有长度M的一维和基于部分M的长度的另一维度和每个通信的扩展因子。 M基于扰码周期。 使用所构建的系统响应矩阵来接收所接收的多个通信信号的数据。

公开(公告)号：US20030058788A1

公开(公告)日：2003-03-27

申请号：US10040513

申请日：2001-12-28

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 method for orthogonal variable spreading factor (OVSF) codes introduces a single number mapped to the 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, it 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: 用于正交可变扩展因子（OVSF）码的代码索引方法引入映射到每个代码的单个数字。 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，它可以轻松快速地生成可用的代码列表，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：US20020101845A1

公开(公告)日：2002-08-01

申请号：US10005649

申请日：2001-12-03

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Ariela Zeira

IPC: H04B007/216

CPC classification number: H04L25/0202 ,  H04B1/707 ,  H04B7/0669 ,  H04L1/0041 ,  H04L1/0618 ,  H04L1/0643

Abstract: The present invention is a system and method for transmitting data symbols in a CDMA communication system including a transmitter having an antenna array and a receiver. The system generates a first and second data field of symbols, then encodes them to produce complex conjugates of the respective symbols. A first communication burst including the first and second data fields, which are separated by a midamble, over a first antenna, and a second communication burst produced using said complex conjugates of said first and second data fields, which are separated by a midamble, over a second antenna are then transmitted by the transmitter. The receiver then receives and decodes the first and second communication bursts to recover the first and second data fields.

Abstract translation: 本发明是一种用于在包括具有天线阵列和接收机的发射机的CDMA通信系统中发送数据符号的系统和方法。 系统产生符号的第一和第二数据字段，然后对它们进行编码以产生各个符号的复共轭。 包括第一和第二数据字段的第一通信突发，其通过第一天线由中间码分隔开，并且使用由中间码分隔的所述第一和第二数据字段的复共轭产生的第二通信突发， 然后由发射机发射第二天线。 然后，接收器接收并解码第一和第二通信突发，以恢复第一和第二数据字段。