公开(公告)号：WO2007030308A2

公开(公告)日：2007-03-15

申请号：PCT/US2006032643

申请日：2006-08-22

Applicant: INTERDIGITAL TECH CORP ,  DAI QINGYUAN ,  OLESEN ROBERT LIND ,  KOO CHANG-SOO ,  SHAH NIRAV

Inventor： DAI QINGYUAN ,  OLESEN ROBERT LIND ,  KOO CHANG-SOO ,  SHAH NIRAV

IPC: H04L5/12

CPC classification number: H04L27/3809 ,  H04L25/067

Abstract: A method and apparatus for de-mapping a symbol modulated by a high order quadrature amplitude modulation (QAM) are disclosed. A transmitting wireless transmit/receive unit (WTRU) maps N input bits to one of 2N symbols in a 2N-QAM constellation. A receiving WTRU receives a signal and generates a sample of the received signal. A soft bit value of the most significant bit (MSB) is calculated based on a value of the sample. A magnitude of the soft bit value of the MSB is subtracted from a threshold. The threshold is initially set with respect to the QAM order, N. A soft bit value of the next MSB is calculated based on the subtraction results. The calculation and subtraction steps are repeated for the next MSB until soft bit values of all the remaining bits are obtained while diving the threshold by 2 each iteration.

Abstract translation: 公开了一种用于解映射由高阶正交幅度调制（QAM）调制的符号的方法和装置。 发射无线发射/接收单元（WTRU）将N个输入比特映射到2N-QAM星座中的2N个符号之一。 接收WTRU接收信号并产生接收信号的采样。 基于样本的值计算最高有效位（MSB）的软比特值。 从阈值中减去MSB的软比特值的大小。 阈值初始设置为相对于QAM顺序，N根据减法结果计算下一个MSB的软比特值。 对于下一个MSB重复计算和减法步骤，直到获得所有剩余比特的软比特值，同时将阈值每次迭代2次。

公开(公告)号：WO2007081977A3

公开(公告)日：2008-02-14

申请号：PCT/US2007000579

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP ,  OLESEN ROBERT L ,  ZEIRA ELDAD M ,  VOLTZ PETER J ,  YANG YONGWEN ,  DAI QINGYUAN ,  KOO CHANG-SOO ,  LU I-TAI ,  TSAI KUNJUN

Inventor： OLESEN ROBERT L ,  ZEIRA ELDAD M ,  VOLTZ PETER J ,  YANG YONGWEN ,  DAI QINGYUAN ,  KOO CHANG-SOO ,  LU I-TAI ,  TSAI KUNJUN

IPC: H04L1/00 ,  H04B7/06 ,  H04L1/06

CPC classification number: H04L1/0643 ,  H04B7/0456 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0837 ,  H04B7/0891 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0631 ,  H04L27/2626 ,  H04L27/2647 ,  H04W84/12

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

Abstract translation: 公开了一种用于实现具有不等调制和编码方案（MCS）或流依赖MCS的空间处理的方法和装置。 输入数据可以被解析成多个数据流，并且对数据流执行空间处理以产生多个空间流。 独立地选择每个数据流的MCS。 空间流通过多个发射天线发射。 可以对空间时间块编码（STBC），空间频率块编码（SFBC），准正交Alamouti编码，时间反转空间时间块编码，线性空间处理和循环延迟分集（CDD）的技术中的至少一种进行 数据/空间流。 然后可以将天线映射矩阵应用于空间流。 空间流通过多个发射天线发射。 可以基于与数据流相关联的每个空间流的信噪比来确定每个数据流的MCS。

公开(公告)号：WO2007019171A3

公开(公告)日：2007-06-21

申请号：PCT/US2006030079

申请日：2006-08-02

Applicant: INTERDIGITAL TECH CORP ,  KOO CHANG-SOO ,  LU I-TAI ,  DAI QINGYUAN ,  VOLTZ PETER J ,  OLESEN ROBERT LIND

Inventor： KOO CHANG-SOO ,  LU I-TAI ,  DAI QINGYUAN ,  VOLTZ PETER J ,  OLESEN ROBERT LIND

IPC: H04B17/00

CPC classification number: H04L27/2613 ,  H04B17/336

Abstract: In a wireless communication system, a method and apparatus for noise estimation of a received OFDM communication signal, wherein the signal comprises a data frame with a preamble having at least one long training field (LTF) containing two identical OFDM symbols comprise examining the LTF for identical OFDM symbols. The noise power in the signal is estimated and the received signal power is measured. The signal to noise ratio is calculated and the signal power is determined by subtracting the noise power from the signal noise.

Abstract translation: 在无线通信系统中，用于接收的OFDM通信信号的噪声估计的方法和装置，其中所述信号包括具有前导码的数据帧，所述前同步码具有至少一个包含两个相同的OFDM符号的长训练场（LTF），包括检查所述LTF用于 相同的OFDM符号。 估计信号中的噪声功率并测量接收信号功率。 计算信噪比，通过从信号噪声中减去噪声功率来确定信号功率。

公开(公告)号：AU2007204966B2

公开(公告)日：2010-05-13

申请号：AU2007204966

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP

Inventor： DAI QINGYUAN ,  LU I-TAI ,  TSAI KUN-JU ,  KOO CHANG-SOO ,  VOLTZ PETER J ,  OLESEN ROBERT L ,  YANG YONGWEN ,  ZEIRA ELDAD M

IPC: H04L1/00 ,  H04B7/06 ,  H04L1/06

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

公开(公告)号：AR058978A1

公开(公告)日：2008-03-05

申请号：ARP070100110

申请日：2007-01-11

Applicant: INTERDIGITAL TECH CORP

Inventor： OLESEN ROBERT L ,  ZEIRA ELDAD M ,  VOLTZ PETER ,  YANG YONGWEN ,  DAI QINGYUAN ,  KOO CHANG-SOO ,  TSAI KUNJU

IPC: H04B7/06 ,  H04L1/00

Abstract: Se revela un método y aparato para la implementacion del procesamiento espacial con esquemas de codificacion y modulacion (MCS) variables o MCS que depende de la corriente. Los datos de entrada pueden ser analizados en una variedad de corrientes de datos, y el procesamiento espacial se realiza en las corrientes de datos para generar una pluralidad de corrientes espaciales. Se selecciona independientemente un MCS para cada corriente de datos. Las corrientes espaciales se transmiten por antenas transmisoras multiples. Al menos una de las técnicas de la codificacion de bloque espacio temporal (STBC), codificacion de bloque de frecuencia de espacio (SFBC), codificacion de Alamaouti cuasiortogonal, codificacion del bloque espacio temporal de inversion cronologica, procesamiento espacial lineal y diversidad de demora cíclica (CDD), puede realizarse en la corriente espacial o de datos. Entonces se aplica una matriz de asignacion por antena a las corrientes espaciales. Las corrientes espaciales se transmiten por antenas transmisoras multiples. El MCS para cada corriente de datos puede ser determinado basándose en una SNR de cada corriente espacial asociada con la corriente de datos.

公开(公告)号：BRPI0706859A2

公开(公告)日：2011-04-12

申请号：BRPI0706859

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP

Inventor： DAI QINGYUAN ,  LU I-TAI ,  TSAI KUN-JU ,  KOO CHANG-SOO ,  VOLTZ PETER J ,  OLESEN ROBERT L ,  YANG YONGWEN ,  ZEIRA ELDAD M

IPC: H04L1/00 ,  H04B7/06 ,  H04L1/06

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

公开(公告)号：CA2636157C

公开(公告)日：2016-06-07

申请号：CA2636157

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP

Inventor： OLESEN ROBERT L ,  ZEIRA ELDAD M ,  VOLTZ PETER J ,  YANG YONGWEN ,  DAI QINGYUAN ,  KOO CHANG-SOO ,  LU I-TAI ,  TSAI KUN-JU

IPC: H04L1/00 ,  H04B7/06 ,  H04L1/06

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

公开(公告)号：ES2720173T3

公开(公告)日：2019-07-18

申请号：ES16165127

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP

Inventor： OLESEN ROBERT L ,  ZEIRA ELDAD ,  VOLTZ PETER J ,  YANG YONGWEN ,  DAI QINGYUAN ,  KOO CHANG-SOO ,  LU I-TAI ,  TSAI KUNJUN

IPC: H04L1/00 ,  H04B7/06 ,  H04B7/08 ,  H04L1/06 ,  H04L27/26

Abstract: Un método para implementar el procesamiento espacial de datos, caracterizado el método por: seleccionar un primer esquema de modulación y codificación, MCS, y un segundo MCS, en donde el primer MCS se selecciona para que sea un MCS de orden superior que el segundo MCS, en donde el primer MCS seleccionado se ha de utilizar para un primer flujo espacial y el segundo MCS seleccionado se ha de utilizar para un segundo flujo espacial; generar el primer flujo espacial utilizando el primer MCS seleccionado y el segundo flujo espacial utilizando el segundo MCS seleccionado; realizar codificación de bloque espacio temporal, STBC, sobre el primer flujo espacial y el segundo flujo espacial para generar un primer flujo espacio temporal, un segundo flujo espacio temporal, y un tercer flujo espacio temporal, en donde el primer flujo espacio temporal y el segundo flujo espacio temporal se generan a partir del primer flujo espacial, y el tercer flujo espacio temporal se genera a partir del segundo flujo espacial; aplicar desplazamiento cíclico al primer flujo espacio temporal, al segundo flujo espacio temporal, y al tercer flujo espacio temporal para generar tres flujos espacio temporales desplazados cíclicamente; y transmitir los tres flujos espacio temporales desplazados cíclicamente a través de tres antenas.

公开(公告)号：RU2406234C2

公开(公告)日：2010-12-10

申请号：RU2008132817

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP

Inventor： DAI QINGYUAN ,  LU I-TAI ,  TSAI KUN-JU ,  KOO CHANG-SOO ,  VOLTZ PETER J ,  OLESEN ROBERT L ,  YANG YONGWEN ,  ZEIRA ELDAD M

IPC: H04L1/00

Abstract: Изобретениеотноситсяк системамбеспроводнойсвязи, вчастностик способами устройствамдляреализациипространственнойобработкисосхемамимодуляциии кодирования (MCS) илизависимымиотпотокасхемами MCS. Входныеданныемогутбытьразобранывомножествопотоковданных, ивыполняетсяпространственнаяобработкапотоковданных, чтобысформироватьмножествопространственныхпотоков, а MCS длякаждогопотокаданныхвыбираетсянезависимымобразом. Пространственныепотокипередаютсяпосредствоммножествапередающихантенн. Приобработкепространственныхпотоков/потоковданныхиспользуютодноизпространственно-частотногоблочногокодирования (SFBC), пространственно-временногоблочногокодирования (STBC), разнесенияциклическойзадержки (SDD), квазиортогональногокодированияАламутии пространственно-временногоблочногокодированияс обращениемвремени. Кпространственнымпотокамможетбытьпримененаматрицасопоставленияантенн. Пространственныепотокипередаютсяпосредствоммножествапередающихантенн. MCS длякаждогопотокаданныхможетбытьопределенанаоснованииотношениясигнал-шумкаждогопространственногопотока, связанногос этимпотокомданных. Техническийрезультат - обеспечитьпреимуществакоэффициентаусиленияприразнесенномприемедляпространственногопотока. 4 н. и 14 з.пф-лы, 5 ил., 1 табл.

公开(公告)号：CA2636157A1

公开(公告)日：2007-07-19

申请号：CA2636157

申请日：2007-01-10

Applicant: INTERDIGITAL TECH CORP

Inventor： DAI QINGYUAN ,  LU I-TAI ,  TSAI KUN-JU ,  KOO CHANG-SOO ,  VOLTZ PETER J ,  OLESEN ROBERT L ,  YANG YONGWEN ,  ZEIRA ELDAD M

IPC: H04L1/00 ,  H04B7/06 ,  H04L1/06

Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.