公开(公告)号：EP1687928A4

公开(公告)日：2006-11-15

申请号：EP04795890

申请日：2004-10-21

Applicant: INTERDIGITAL TECH CORP

Inventor： PIETRASKI PHILIP J ,  STERNBERG GREGORY S ,  YANG RUI ,  LI BIN

IPC: H04L1/00 ,  H04L1/20 ,  H04L25/02

CPC classification number: H04L1/0026 ,  H04L1/20 ,  H04L25/0202

Abstract: A method and apparatus for estimating and reporting the quality of a wireless communication channel between a wireless transmit/receive unit (WTRU) and a Node-B. A modulated signal is received from the Node-B over the communication channel and a channel estimation is performed on the modulated signal to provide a channel estimate. In one embodiment, the modulated signal is demodulated based on the channel estimate to provide a demodulated signal and a signal-to-interference (SIR) estimate based on the demodulated signal is obtained. The quality of the communication channel is estimated based on at least the SIR estimate. In an alternate embodiment, a SIR estimate based on the channel estimate is obtained. The quality of the communication channel is estimated based on the SIR estimate and additional information including at least one of delay spread, transmit power and WTRU velocity information.

Abstract translation: 一种用于估计和报告无线发射/接收单元（WTRU）与节点B之间的无线通信信道的质量的方法和装置。 通过通信信道从节点B接收调制信号，并且对调制信号执行信道估计以提供信道估计。 在一个实施例中，基于信道估计对调制信号进行解调以提供解调信号，并且获得基于解调信号的信号与干扰（SIR）估计。 通信信道的质量至少基于SIR估计来估计。 在替代实施例中，获得基于信道估计的SIR估计。 通信信道的质量基于SIR估计和包括延迟扩展，发射功率和WTRU速度信息中的至少一个的附加信息来估计。

公开(公告)号：EP1636910A4

公开(公告)日：2006-08-02

申请号：EP04754999

申请日：2004-06-10

Applicant: INTERDIGITAL TECH CORP

Inventor： PIETRASKI PHILIP J ,  STERNBERG GREGORY S ,  YANG RUI

IPC: H04B1/00 ,  H04B1/10 ,  H04B1/18 ,  H04L1/00 ,  H04L1/20

CPC classification number: H04L1/20 ,  H04B1/1027 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/1607

Abstract: A method for biasing signal-to-interference ratio (SIR) to generate channel quality indicator (CQI) includes measuring the packet error rate (PER) of a received signal and comparing the PER to a to the target PER to generate a correction term. The correction term is combined with the SIR estimation of a reference channel to generate a CQI. The CQI is reported to a transmitter to adjust signal configurations, such as code rate, modulation type, number of codes, power offset.

Abstract translation: 用于偏置信号干扰比（SIR）以生成信道质量指示符（CQI）的方法包括测量接收到的信号的分组差错率（PER）并将PER与a与目标PER进行比较以生成校正项。 校正项与参考信道的SIR估计组合以生成CQI。 CQI被报告给发射机以调整信号配置，例如码率，调制类型，码数，功率偏移。

公开(公告)号：EP1604466A4

公开(公告)日：2007-06-27

申请号：EP04716409

申请日：2004-03-02

Applicant: INTERDIGITAL TECH CORP

Inventor： YANG RUI ,  LI BIN ,  REZNIK ALEXANDER ,  ZEIRA ARIELA

IPC: H04B1/38 ,  H04L25/02 ,  H04L25/03

CPC classification number: H04L25/03057 ,  H04L25/0212 ,  H04L25/0242 ,  H04L25/03292 ,  H04L2025/03605

Abstract: A sliding window based data estimation is performed. An error is introduced in the data estimation to the communication modeling the relationship between the transmitted and received signals. To compensate for an error in the estimated data, the data that was estimated in a previous sliding window step (58) or terms that would otherwise be truncated as noise are used. These techniques (50, 52, 54, 56. 58, 60, 62 and 64) allow for data to be truncated prior to further processing reducing the data of the window.

公开(公告)号：EP1636900A4

公开(公告)日：2007-04-18

申请号：EP04756111

申请日：2004-06-24

Applicant: INTERDIGITAL TECH CORP

Inventor： REZNIK ALEXANDER ,  YANG RUI ,  LI BIN ,  ZEIRA ARIELA

IPC: H04L25/03 ,  H03D1/04 ,  H04B20060101 ,  H04B1/707

CPC classification number: H04L25/03305 ,  H04B1/71055 ,  H04L25/03331 ,  H04L25/03993

Abstract: The present invention has many aspects. One aspect of the invention is to perform equalization using a sliding window approach. A second aspect reuses information derived for each window for use by a subsequent window. A third aspect utilizes a discrete Fourier transform based approach for the equalization. A fourth aspect relates to handling oversampling of the received signals and channel responses. A fifth aspect relates to handling multiple reception antennas. A sixth embodiment relates to handling both oversampling and multiple reception antennas.

公开(公告)号：BRPI0715290A2

公开(公告)日：2013-06-11

申请号：BRPI0715290

申请日：2007-09-28

Applicant: INTERDIGITAL TECH CORP

Inventor： ZEIRA ELDAD ,  REZNIK ALEXANDER ,  YANG RUI ,  PIETRASKI PHILIP J ,  YANG YONGWEN

IPC: H04L1/00 ,  H04L69/40

Abstract: A method and apparatus for encoding channel quality indicator, CQI, bits, are disclosed. The method comprises: generating CQI bits (108); encoding the CQI bits (104); generating a signal conveying the CQI bits (106); applying a gain factor b hs to the CQI bits and sending the encoded CQI bits (106); wherein the gain factor b hs for the CQI bits is derived from a quantized amplitude ratio A hs =b hs /b c , wherein b c is a gain factor for a dedicated physical control channel, DPCCH, A hs is translated from ” CQI , which is signalled by a higher layer, and the translation of ” CQI into the quantized amplitude ratio A hs is performed in accordance with a predefined table.

公开(公告)号：MX2009003525A

公开(公告)日：2009-06-01

申请号：MX2009003525

申请日：2007-09-28

Applicant: INTERDIGITAL TECH CORP

Inventor： PIETRASKI PHILIP J ,  ZEIRA ELDAD ,  REZNIK ALEXANDER ,  YANG RUI ,  YANG YONGWEN

IPC: H04L25/03 ,  H04L69/40

Abstract: Se muestra un método y aparato para codificar un indicador de calidad de canal (CQI) y precodificar bits de control de información. Cada uno de los bits de entrada, tal como bits CQI y/o bits PCI, tiene un significado particular. Los bits de entrada se codifican con una codificación linear de bloque. Los bits de entrada se proporcionan con una protección desigual de error en base al significado de cada bit de entrada. Los bits de entrada pueden ser duplicados en base al significado de cada bit de entrada y puede ser lograda una codificación idéntica de protección. Una matriz generadora para la decodificación puede ser generada mediante una operación elemental de secuencias de base convencional para proporcionar más protección a un bit más significativo (MSB).

公开(公告)号：NO20081022A

公开(公告)日：2008-02-26

申请号：NO20081022

申请日：2008-02-26

Applicant: INTERDIGITAL TECH CORP

Inventor： PAN JUNG-LIN ,  BULTAN AYKUT ,  YANG RUI ,  KEARNEY KENNETH P

IPC: H04B1/06

CPC classification number: H03J7/04

公开(公告)号：AR055121A1

公开(公告)日：2007-08-08

申请号：ARP060103566

申请日：2006-08-16

Applicant: INTERDIGITAL TECH CORP

Inventor： PAN JUNG-LIN ,  YANG RUI ,  TERRY STEPHEN E

IPC: H04L1/10

Abstract: Se divulgan un método y aparato de comunicacion inalámbrica para detectar y decodificar transmisiones de canal de indicador de pedido híbrido de repeticion automática (H-ARQ) de canal dedicado mejorado (E-DCH) (E-HICH). Una unidad inalámbrica de transmision/recepcion (WTRU) recibe transmisiones de E-HICH y detecta un indicador de H-ARQ transmitido a través del E-HICH, efectuando una prueba de hipotesis binaria. La WTRU genera luego un mensaje de confirmacion (ACK) o un mensaje de no confirmacion (NACK) en base al indicador de H-ARQ detectado. Una prueba de confiabilidad puede ser llevada a cabo, además, a fin de mejorar la performance, por lo cual la prueba de hipotesis binaria puede ser efectuada solamente si se pasa la prueba de confiabilidad.

公开(公告)号：CA2588262A1

公开(公告)日：2006-05-18

申请号：CA2588262

申请日：2005-11-02

Applicant: INTERDIGITAL TECH CORP

Inventor： STERNBERG GREGORY S ,  DEMIR ALPASLAN ,  PAN JUNG-LIN ,  LI BIN ,  YANG RUI ,  BELURI MIHAELA ,  PIETRASKI PHILIP J

IPC: H03H7/30 ,  G06F17/10 ,  H03K5/159 ,  H04B1/10 ,  H04B3/14

Abstract: An adaptive equalizer including an equalizer filter and a tap coefficients generator used to process a sample data stream derived from a plurality of received signals is disclosed. The tap coefficients generator includes an equalizer tap update unit, a vector norm square estimator, an active taps mask generator, a switch and a pilot amplitude reference unit used to minimize the dynamic range of the equalizer filter. A dynamic mask vector is used to mask active taps generated by the equalizer tap update unit when an unmasked signal output by the equalizer filter is selected by the switch to generate an error signal fed to the equalizer tap update unit. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal.

公开(公告)号：CA2586992A1

公开(公告)日：2006-05-18

申请号：CA2586992

申请日：2005-10-19

Applicant: INTERDIGITAL TECH CORP

Inventor： DEMIR ALPASLAN ,  PIETRASKI PHILIP J ,  YANG RUI ,  BELURI MIHAELA

IPC: H03H7/40

Abstract: An apparatus for estimating and correcting baseband frequency error in a receiver is disclosed. An equalizer performs equalization on a sample data stream and generates filter tap values based on the equalization. An estimated frequency error signal is generated based on at least one of the filter tap values. A rotating phasor is generated based on the estimated frequency error signal. The rotating phasor signal is multiplied with the sample data stream to correct the frequency of the sample data stream. Alternatively, a channel estimator performs channel estimation and generates Rake receive finger weights based on at least one of the finger weights. An estimated frequency error signal is generated based on at least one of the finger weights.