公开(公告)号：US07639763B2

公开(公告)日：2009-12-29

申请号：US11466568

申请日：2006-08-23

申请人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

发明人： Zoltan Kemenczy ,  Huan Wu ,  Sean Simmons

IPC分类号： H04B1/10 ,  H04L27/06

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

摘要： A wireless communications device may include a housing and a wireless transmitter and a wireless receiver carried by the housing. The wireless receiver may include a joint demodulation filter for reducing co-channel interference between a desired signal and a co-channel interfering signal which 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： 无线通信设备可以包括外壳和由外壳承载的无线发射器和无线接收器。 无线接收机可以包括联合解调滤波器，用于减少期望信号和同信道干扰信号之间的同信道干扰，该信道干扰信号可以包括接收期望信号和同信道干扰信号的采样的输入，维特比解码器和 输入和维特比解码器之间的第一信号路径包括第一滤波器。 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：US20070049233A1

公开(公告)日：2007-03-01

申请号：US11464310

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： H04B1/10

CPC分类号： H04L25/0248 ,  H04B7/0617 ,  H04L25/0212

摘要： A wireless communications device may include a wireless transmitter and a wireless receiver. The wireless receiver may include a filter for reducing co-channel interference and 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 a singular value decomposition (SVD). 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 circuits

摘要翻译： 无线通信设备可以包括无线发射机和无线接收机。 无线接收机可以包括用于减少同信道干扰的滤波器，并且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滤波器权重来对通信信号分离的n个信号部分进行滤波， 基于奇异值分解（SVD）的信道脉冲响应（CIR）。 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：US20060268972A1

公开(公告)日：2006-11-30

申请号：US11420266

申请日：2006-05-25

申请人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

发明人： Huan Wu ,  Sean Simmons ,  Zoltan Kemenczy

IPC分类号： H04H1/00 ,  H03H7/30

CPC分类号： H04L25/0204 ,  H04L1/0631 ,  H04L25/0212

摘要： 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.

摘要翻译： 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）来对由至少一个虚拟天线接收的通信信号进行滤波， 。 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。

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：US20100111233A1

公开(公告)日：2010-05-06

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： H04B1/10 ,  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：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。