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    Joint space-time optimum filters for interference cancellation
    3.
    发明公开
    Joint space-time optimum filters for interference cancellation 有权
    Gemeinsamer Raum-Zeit优化过滤器zurInterferenzunterdrückung

    公开(公告)号：EP1993247A1

    公开(公告)日：2008-11-19

    申请号：EP08163814.0

    申请日：2006-05-25

    Applicant: Research In Motion Limited

    Inventor： Wu, Huan ,  Simmons, Sean ,  Kemenczy, Zoltan

    IPC: H04L25/03 ,  H04B7/08

    CPC classification number: H04L25/03006 ,  H04B7/0854 ,  H04L25/0242 ,  H04L25/0248 ,  H04L25/03178 ,  H04L2025/03426 ,  H04L2025/03535 ,  H04L2025/03605

    Abstract: A filter for reducing co-channel interference within a communications receiver may include a multi-channel, space-time filter circuit that filters n signal parts that have been split from a communications signal by jointly estimating space-time filter weights and multi-channel impulse responses (CIRs). The filter may further include a multi-channel, matched filter circuit that receives multi-channel signals from the multi-channel, space-time filter circuit and has a filter response that is provided by a channel impulse response estimation from the space-time filter circuit.

    Abstract translation: 用于减少通信接收机内的同信道干扰的滤波器可以包括多信道空时滤波器电路，其通过联合估计空时滤波器权重和多信道脉冲来对从通信信号分离的n个信号部分进行滤波 回应（CIR）。 滤波器还可以包括多通道匹配滤波器电路，其从多通道时空滤波器电路接收多信道信号，并且具有由来自时空滤波器的信道脉冲响应估计提供的滤波器响应 电路。

    Method and receiver for estimating the channel impulse response using a constant modulus algorithm
    4.
    发明公开
    Method and receiver for estimating the channel impulse response using a constant modulus algorithm 有权
    该方法和接收器使用恒模算法来估计信道脉冲响应

    公开(公告)号：EP1843533A1

    公开(公告)日：2007-10-10

    申请号：EP06251911.1

    申请日：2006-04-05

    Applicant: Research In Motion Limited

    Inventor： Wu, Huan ,  Simmons, Sean ,  Kemenczy, Zoltan

    IPC: H04L25/02

    CPC classification number: H04L25/03057 ,  H04L25/0212 ,  H04L25/024 ,  H04L25/03292 ,  H04L25/03305 ,  H04L2025/03611

    Abstract: A receiver and associated method estimates a channel impulse response of the communications signal. A communications signal is received as a burst of transmitted symbols, including a known training sequence. The joint estimation of timing offset and initial channel impulse response is determined based on the cross-correlations of the known transmitted symbols and received communications signal. A constant modulus interference removal iteration is applied to improve the initial channel impulse estimation.

    Abstract translation: 一种接收机，和相关方法估计的通信信号的信道脉冲响应。 一种通信信号被接收作为脉冲串的反式mitted符号，包括锻炼已知序列。 定时的联合估计偏移和初始信道脉冲响应是确定性的开采基于已知的反式mitted符号和接收的通信信号的交叉相关。 恒模干扰去除迭代被施加到改善的初始信道脉冲估计。

    Method and receiver for estimating the channel impulse response using a constant modulus algorithm
    5.
    发明公开
    Method and receiver for estimating the channel impulse response using a constant modulus algorithm 有权
    在恒模干扰去除交互信道脉冲响应的评价的方法和接收器

    公开(公告)号：EP2009859A1

    公开(公告)日：2008-12-31

    申请号：EP08166372.6

    申请日：2006-04-05

    Applicant: Research In Motion Limited

    Inventor： Wu, Huan ,  Simmons, Sean ,  Kemenczy, Zoltan

    IPC: H04L25/02 ,  H04L25/03

    CPC classification number: H04L25/03057 ,  H04L25/0212 ,  H04L25/024 ,  H04L25/03292 ,  H04L25/03305 ,  H04L2025/03611

    Abstract: A receiver and associated method estimates a channel impulse response of the communications signal. A communications signal is received as a burst of transmitted symbols, including a known training sequence. The joint estimation of timing offset and initial channel impulse response is determined based on the cross-correlations of the known transmitted symbols and received communications signal. A constant modulus interference removal iteration is applied to improve the initial channel impulse estimation.

    Abstract translation: 一种接收机，和相关方法估计的通信信号的信道脉冲响应。 一种通信信号被接收作为脉冲串的反式mitted符号，包括锻炼已知序列。 定时的联合估计偏移和初始信道脉冲响应是确定性的开采基于已知的反式mitted符号和接收的通信信号的交叉相关。 恒模干扰去除迭代被施加到改善的初始信道脉冲估计。

    Correction circuit for improving performance in a channel decoder
    6.
    发明公开
    Correction circuit for improving performance in a channel decoder 有权
    一种用于在信道解码器的功能改善校正电路

    公开(公告)号：EP1802061A1

    公开(公告)日：2007-06-27

    申请号：EP05112539.1

    申请日：2005-12-20

    Applicant: Research In Motion Limited

    Inventor： Simmons, Sean ,  Wu, Huan ,  Kemenczy, Zoltan

    IPC: H04L25/03

    CPC classification number: H04L27/22 ,  H04L25/03178

    Abstract: A receiver for a mobile communication system includes a channel equalizer for receiving a burst and generating a soft decision output associated with the burst, a soft decision correction circuit follows the channel equalizer and a decoder receives and decodes a block of bursts. The soft decision correction circuit calculates a correction factor based on the soft decision output for the burst and applies the correction factor to the burst prior to the burst entering the decoder.

    Joint space-time optimum filters for interference cancellation
    7.
    发明公开
    Joint space-time optimum filters for interference cancellation 有权
    Gemeinsame Raum-Zeit optimale过滤器zurInterferenzunterdrückung

    公开(公告)号：EP1755298A1

    公开(公告)日：2007-02-21

    申请号：EP06252731.2

    申请日：2006-05-25

    Applicant: Research In Motion Limited

    Inventor： Wu, Huan ,  Simmons, Sean ,  Kemenczy, Zoltan

    IPC: H04L25/03 ,  H04B7/08

    CPC classification number: H04B7/0854 ,  H04L25/0242 ,  H04L25/03178 ,  H04L2025/03535

    Abstract: A wireless communications device may include at least one virtual antenna, and a space-time filter circuit for filtering a communications signal received by the at least one virtual antenna by jointly estimating space-time filter weights and at least one channel impulse response (CIR). The wireless communications device may further include a matched filter circuit downstream from the space-time filter circuit and having a filter response that is provided by a channel impulse response estimation from the space-time filter circuit.

    Abstract translation: 无线通信设备可以包括至少一个虚拟天线和空时滤波器电路，用于通过联合估计空时滤波器权重和至少一个信道脉冲响应（CIR）来过滤由至少一个虚拟天线接收的通信信号， 。 无线通信设备还可以包括空时滤波器电路下游的匹配滤波器电路，并且具有由来自时空滤波器电路的信道脉冲响应估计提供的滤波器响应。

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