公开(公告)号：US07623605B2

公开(公告)日：2009-11-24

申请号：US11464542

申请日：2006-08-15

申请人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

发明人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

IPC分类号： H04B1/10

CPC分类号： H04L25/0228 ,  H04B7/0891 ,  H04L1/06

摘要： An interference cancelling matched filter (ICMF) may include an antenna array for receiving a signal burst including a training sequence therein, and an adaptive space-time filter connected to the virtual antenna array and having settable filter coefficients. The ICMF may further include a channel impulse response estimator for estimating a channel impulse response based upon the training sequence, and a signal blocker operatively connected between the channel impulse response estimator and the adaptive space-time filter so that the filter coefficients thereof are set based upon the training sequence and not the whole signal burst.

摘要翻译： 干扰消除匹配滤波器（ICMF）可以包括用于接收包括其中的训练序列的信号突发的天线阵列和连接到虚拟天线阵列并具有可设置的滤波器系数的自适应时空滤波器。 ICMF还可以包括用于基于训练序列估计信道脉冲响应的信道脉冲响应估计器，以及可操作地连接在信道脉冲响应估计器和自适应空时滤波器之间的信号阻塞器，使得其滤波器系数基于 在训练序列上而不是整个信号突发。

公开(公告)号：US07590197B2

公开(公告)日：2009-09-15

申请号：US11311178

申请日：2005-12-20

申请人： Sean Simmons ,  Huan Wu ,  Zoltan Kemenczy

发明人： Sean Simmons ,  Huan Wu ,  Zoltan Kemenczy

IPC分类号： H04L27/06 ,  H03M13/03

CPC分类号： H04L25/03171 ,  H04L25/03318

摘要： 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.

摘要翻译： 用于移动通信系统的接收机包括：信道均衡器，用于接收脉冲串并产生与脉冲串相关联的软判决输出，软判决校正电路跟随信道均衡器，并且解码器接收和解码突发块。 软决策校正电路基于脉冲串的软判决输出来计算校正因子，并在脉冲串进入解码器之前将校正因子应用于脉冲串。

公开(公告)号：US20070237268A1

公开(公告)日：2007-10-11

申请号：US11398043

申请日：2006-04-05

申请人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

发明人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

IPC分类号： H04L27/06

CPC分类号： H04L25/0212 ,  H04L25/0226 ,  H04L25/025 ,  H04L2025/03624

摘要： 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.

摘要翻译： 接收机和相关方法估计通信信号的信道脉冲响应。 通信信号被接收为发射符号的脉冲串，包括已知的训练序列。 基于已知发送符号和接收到的通信信号的互相关来确定定时偏移和初始信道脉冲响应的联合估计。 应用恒模干涉去除迭代来改善初始信道脉冲估计。

公开(公告)号：US20070133814A1

公开(公告)日：2007-06-14

申请号：US11464242

申请日：2006-08-14

申请人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

发明人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

IPC分类号： A61F11/06

CPC分类号： H04B7/0891 ,  H04B7/0845 ,  H04L1/0631 ,  H04L25/03006 ,  H04L2025/03426 ,  H04L2025/03605

摘要： 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) based upon Cholesky and eigenvalue decompositions. 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

摘要翻译： 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通信信号分离的n个信号部分进行滤波 响应（CIR）基于Cholesky和特征值分解。 滤波器还可以包括多信道匹配滤波器电路，其从多信道时空滤波器电路接收多信道信号，并且具有由来自空时滤波器的信道脉冲响应估计提供的滤波器响应 电路

公开(公告)号：US07970078B2

公开(公告)日：2011-06-28

申请号：US12686453

申请日：2010-01-13

申请人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

发明人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

IPC分类号： H04L27/00 ,  H04L25/08 ,  H04B1/10

CPC分类号： H04L25/0212 ,  H04L25/0226 ,  H04L25/025 ,  H04L2025/03624

摘要： 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.

摘要翻译： 接收机和相关联的方法估计通信信号的信道脉冲响应。 通信信号被接收为发射符号的脉冲串，包括已知的训练序列。 基于已知发送符号和接收到的通信信号的互相关来确定定时偏移和初始信道脉冲响应的联合估计。 应用恒模干涉去除迭代来改善初始信道脉冲估计。

公开(公告)号：US07940872B2

公开(公告)日：2011-05-10

申请号：US12616251

申请日：2009-11-11

申请人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

发明人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

IPC分类号： H04B1/10 ,  H04L27/00 ,  H03M13/03

CPC分类号： H04B1/123 ,  H04L25/0328 ,  H04L25/03292 ,  H04L25/03299

摘要： A joint demodulation filter for reducing co-channel interference between a desired signal and a co-channel interfering signal may include an input receiving samples of the desired signal and the co-channel interfering signal, a Viterbi decoder, and a first signal path between the input and the Viterbi decoder comprising a first filter. The joint demodulation filter may further include a second signal path between the input and the Viterbi decoder and comprising a linear finite impulse response (FIR) modeler for generating a channel impulse response estimate for the co-channel interfering signal. Additionally, a third signal path may be between the input and the Viterbi decoder and include a whitened matched filter for generating a channel impulse response estimate for the desired signal.

摘要翻译： 用于减少期望信号和同信道干扰信号之间的同信道干扰的联合解调滤波器可以包括接收所需信号和同信道干扰信号的采样的输入，维特比解码器和第二信号路径 输入和维特比解码器包括第一滤波器。 联合解调滤波器还可以包括在输入和维特比解码器之间的第二信号路径，并且包括用于产生同信道干扰信号的信道脉冲响应估计的线性有限脉冲响应（FIR）建模器。 此外，第三信号路径可以在输入和维特比解码器之间，并且包括用于产生期望信号的信道脉冲响应估计的白化匹配滤波器。

公开(公告)号：US07907692B2

公开(公告)日：2011-03-15

申请号：US12616251

申请日：2009-11-11

申请人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

发明人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

IPC分类号： H04B1/10 ,  H04L27/00

摘要： A joint demodulation filter for reducing co-channel interference between a desired signal and a co-channel interfering signal may include an input receiving samples of the desired signal and the co-channel interfering signal, a Viterbi decoder, and a first signal path between the input and the Viterbi decoder comprising a first filter. The joint demodulation filter may further include a second signal path between the input and the Viterbi decoder and comprising a linear finite impulse response (FIR) modeler for generating a channel impulse response estimate for the co-channel interfering signal. Additionally, a third signal path may be between the input and the Viterbi decoder and include a whitened matched filter for generating a channel impulse response estimate for the desired signal.

公开(公告)号：US20100054381A1

公开(公告)日：2010-03-04

申请号：US12616251

申请日：2009-11-11

申请人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

发明人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

IPC分类号： H04B1/10

CPC分类号： H04B1/123 ,  H04L25/0328 ,  H04L25/03292 ,  H04L25/03299

摘要： A joint demodulation filter for reducing co-channel interference between a desired signal and a co-channel interfering signal may include an input receiving samples of the desired signal and the co-channel interfering signal, a Viterbi decoder, and a first signal path between the input and the Viterbi decoder comprising a first filter. The joint demodulation filter may further include a second signal path between the input and the Viterbi decoder and comprising a linear finite impulse response (FIR) modeler for generating a channel impulse response estimate for the co-channel interfering signal. Additionally, a third signal path may be between the input and the Viterbi decoder and include a whitened matched filter for generating a channel impulse response estimate for the desired signal.

摘要翻译： 用于减少期望信号和同信道干扰信号之间的同信道干扰的联合解调滤波器可以包括接收所需信号和同信道干扰信号的采样的输入，维特比解码器和第二信号路径 输入和维特比解码器包括第一滤波器。 联合解调滤波器还可以包括在输入和维特比解码器之间的第二信号路径，并且包括用于产生同信道干扰信号的信道脉冲响应估计的线性有限脉冲响应（FIR）建模器。 此外，第三信号路径可以在输入和维特比解码器之间，并且包括用于产生期望信号的信道脉冲响应估计的白化匹配滤波器。

公开(公告)号：US07672412B2

公开(公告)日：2010-03-02

申请号：US11398043

申请日：2006-04-05

申请人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

发明人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

IPC分类号： H04B1/10 ,  H03H7/30

CPC分类号： H04L25/0212 ,  H04L25/0226 ,  H04L25/025 ,  H04L2025/03624

摘要： 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.

摘要翻译： 接收机和相关联的方法估计通信信号的信道脉冲响应。 通信信号被接收为发射符号的脉冲串，包括已知的训练序列。 基于已知发送符号和接收到的通信信号的互相关来确定定时偏移和初始信道脉冲响应的联合估计。 应用恒模干涉去除迭代来改善初始信道脉冲估计。

公开(公告)号：US20070254612A1

公开(公告)日：2007-11-01

申请号：US11414404

申请日：2006-04-28

申请人： Sean Simmons ,  Huan Wu ,  Zoltan Kemenczy

发明人： Sean Simmons ,  Huan Wu ,  Zoltan Kemenczy

IPC分类号： H04B1/18

CPC分类号： H04W48/16 ,  H03J1/0091 ,  H04B17/382

摘要： One illustrative method of scanning a radio frequency (RF) band (e.g. 850 MHz band) for valid RF carrier signals of a wireless communication network (e.g. a GSM network) includes the steps of monitoring an RF channel to receive a candidate RF carrier signal; identifying whether the candidate RF carrier signal is a valid RF carrier signal of the wireless communication network by estimating a bandwidth of the candidate RF carrier signal and, if the estimated bandwidth is different from a predetermined bandwidth associated with valid RF carrier signals of the wireless communication network, identifying that the candidate RF signal is not a valid RF carrier signal of the wireless communication network; and repeating the acts of monitoring and identifying for a next RF channel of a plurality of RF channels associated with the wireless communication network. Preferably, the RF bandwidth estimation is performed together with a system signal detection process (e.g. FCCH detection). Advantageously, the time required to scan the RF band is reduced.

摘要翻译： 扫描无线通信网络（例如GSM网络）的有效RF载波信号的射频（RF）频带（例如850MHz频带）的一种说明性方法包括以下步骤：监视RF信道以接收候选RF载波信号; 通过估计所述候选RF载波信号的带宽来识别所述候选RF载波信号是否是所述无线通信网络的有效RF载波信号，并且如果所估计的带宽与所述无线通信的有效RF载波信号相关联的预定带宽不同 识别候选RF信号不是无线通信网络的有效RF载波信号; 并且重复监视和识别与无线通信网络相关联的多个RF信道的下一个RF信道的动作。 优选地，RF带宽估计与系统信号检测处理（例如FCCH检测）一起执行。 有利地，扫描RF频带所需的时间减少。