公开(公告)号：US20080031310A1

公开(公告)日：2008-02-07

申请号：US11871076

申请日：2007-10-11

申请人： Kamilo Feher

发明人： Kamilo Feher

IPC分类号： H04B1/00

CPC分类号： H04L7/0008 ,  H04B1/69 ,  H04B1/707 ,  H04B7/0871 ,  H04B2201/70703 ,  H04L1/0056 ,  H04L25/03019 ,  H04L25/03828 ,  H04L25/4902 ,  H04L27/00 ,  H04L27/0004 ,  H04L27/0008 ,  H04L27/18 ,  H04L27/2017 ,  H04L27/2053 ,  H04L27/2071 ,  H04L27/22 ,  H04L27/2626 ,  H04L27/2637 ,  H04L27/2647 ,  H04L27/34 ,  H04L27/3405 ,  H04L27/362 ,  H04L27/38 ,  H04L2025/03547 ,  H04L2025/03681 ,  H04L2027/0087 ,  Y02D70/122 ,  Y02D70/124 ,  Y02D70/40 ,  Y02D70/444

摘要： Cross-Correlated Time Division Multiple Access (TDMA), Spread Spectrum, Code Division Multiple Access (CDMA) and Orthogonal Frequency Division Multiplexed (OFDM) modulated OFDM receiver and demodulator systems. Receiver for receiving a Time Division Multiple Access (TDMA) modulated signal having a first modulation format and a second modulated signal having a second modulation format and demodulator, filter and processor for demodulating, filtering and processing the received TDMA modulated signal and for filtered, processed cross-correlated in-phase and quadrature-phase baseband signals and demodulating the second modulated signal providing a demodulated baseband signal. A demodulator system containing two demodulators for demodulating the received signal. Receiver for receiving a Time Division Multiple Access (TDMA) and a Orthogonal Frequency Division Multiplexed (OFDM) modulated signal. A demodulator, filter and processor for demodulating, filtering and processing the received TDMA modulated signal and for providing demodulated filtered, processed TDMA cross-correlated in-phase and quadrature-phase baseband signals and demodulating the spread spectrum modulated signal and providing a demodulated filtered spread spectrum signal.

摘要翻译： 交叉相关时分多址（TDMA），扩频，码分多址（CDMA）和正交频分复用（OFDM）调制OFDM接收机和解调器系统。 接收器，用于接收具有第一调制格式的时分多址（TDMA）调制信号和具有第二调制格式的解调器和解调器的第二调制信号，用于解调，滤波和处理接收到的TDMA调制信号的滤波器和处理器， 交叉相位同相和正交相位基带信号，并解调提供解调基带信号的第二调制信号。 一个解调器系统，包含两个用于解调接收信号的解调器。 用于接收时分多址（TDMA）和正交频分复用（OFDM）调制信号的接收机。 一种解调器，滤波器和处理器，用于对接收的TDMA调制信号进行解调，滤波和处理，并用于提供经解调的经滤波处理的TDMA交叉相位同相和正交相位基带信号，并对扩展频谱调制信号进行解调并提供经解调的滤波扩展 频谱信号。

公开(公告)号：US20070042741A1

公开(公告)日：2007-02-22

申请号：US11464329

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： H04L1/0631 ,  H04B7/0413 ,  H04L25/0246 ,  H04L25/0248 ,  H04L2025/03426 ,  H04L2025/03547

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 QR 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： 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频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QR和特征值分解的信道脉冲响应（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：US20040240531A1

公开(公告)日：2004-12-02

申请号：US10629157

申请日：2003-07-28

发明人： Peter J. Black ,  Michael A. Howard

IPC分类号： H04B001/707

CPC分类号： H04B1/7115 ,  H04B1/7117 ,  H04B2201/7071 ,  H04L1/20 ,  H04L25/03019 ,  H04L2025/03547

摘要： Wireless communication receiver with hybrid equalizer and RAKE receiver. The receiver compares performance of the system for RAKE only and RAKE in combination with equalizer estimates. The receiver enables or disables the equalizer accordingly.

摘要翻译： 具有混合均衡器和RAKE接收机的无线通信接收机。 接收机将RAKE系统的性能与RAKE结合使用均衡器估算。 接收器相应地启用或禁用均衡器。

公开(公告)号：US20040219896A1

公开(公告)日：2004-11-04

申请号：US10484959

申请日：2004-01-27

发明人： Lajos Gazsi ,  Matthias Schoebinger

IPC分类号： H04B017/02

CPC分类号： H04L25/03057 ,  H04L2025/03547 ,  H04L2025/03617

摘要： The invention relates to a device for correcting a receiver signal which is associated with an emission signal transmitted in a distorted transmission system. The emission signal comprises periods which can be determined by analyzing the received signal wherein determined properties are exhibited which are suitable for adjusting the correction. According to one embodiment, the device comprises a component for adjusting the correction based upon an analysis of the received signal and a component for monitoring and enabling the adjusting component when the received signal associated with the transmission signal exhibits certain characteristics.

公开(公告)号：US06671339B1

公开(公告)日：2003-12-30

申请号：US09615716

申请日：2000-07-13

申请人： Keun Hee Ahn

发明人： Keun Hee Ahn

IPC分类号： H03K501

CPC分类号： H03L7/095 ,  H04L27/3827 ,  H04L2025/03547 ,  H04L2027/0038

摘要： A lock detecting apparatus for a multimedia digital broadcasting receiver is disclosed. The present invention is a general purpose lock detecting apparatus applicable to a channel equalizer as well as a carrier recovery unit. Also, the present lock detecting apparatus uses two lock threshold values throughout a pull-in and lock-in, to improve the reliability of the lock detector for a false lock.

摘要翻译： 公开了一种用于多媒体数字广播接收机的锁定检测装置。 本发明是适用于信道均衡器以及载波恢复单元的通用锁定检测装置。 此外，本锁定检测装置在整个拉入和锁定期间使用两个锁定阈值，以提高锁定检测器的假锁的可靠性。

公开(公告)号：US6057877A

公开(公告)日：2000-05-02

申请号：US151208

申请日：1998-09-11

申请人： Allen LeRoy Limberg

发明人： Allen LeRoy Limberg

IPC分类号： H04N5/21 ,  H04N5/44 ,  H04N5/38

CPC分类号： H04N5/4401 ,  H04L1/00 ,  H04L25/03178 ,  H04L27/02 ,  H04N5/21 ,  H04L2025/03547

摘要： A first comb filter differentially combines an I- or Q-channel baseband signal supplied as input signal to a co-channel NTSC interference detector for a DTV receiver with that signal as subjected to a first amount of differential delay. This generates a first comb filter response in which artifacts arising from synchronous detection of the co-channel interfering analog television signal are suppressed. The detector includes a second comb filter that combines the input signal with that signal as subjected to a second amount of differential delay to generate a second comb filter response in which artifacts of the co-channel interference are reinforced. The first and second comb filters both use the same type of linear combiner so the direct term of input signal is treated similarly in the first comb filter response and in the second comb filter response. First and second amplitude detectors detect the respective amplitudes of these comb filter responses. An amplitude comparator compares the first and second amplitude detection responses and indicates, when and only when the first and second amplitude detection responses differ more than a prescribed amount, that co-channel interference is of sufficient strength to be objectionable.

摘要翻译： 第一梳状滤波器将作为输入信号提供的I或Q通道基带信号差分地组合到具有经受第一量差分延迟的信号的DTV接收机的同信道NTSC干扰检测器。 这产生了第一梳状滤波器响应，其中抑制了由同频道干扰模拟电视信号的同步检测产生的伪影。 检测器包括第二梳状滤波器，其将输入信号与经受第二数量的差分延迟的信号组合以产生第二梳状滤波器响应，其中增强了同频道干扰的伪影。 第一和第二梳状滤波器都使用相同类型的线性组合器，使得在第一梳状滤波器响应和第二梳状滤波器响应中类似地处理输入信号的直接项。 第一和第二振幅检测器检测这些梳状滤波器响应的相应振幅。 振幅比较器比较第一和第二振幅检测响应，并且当第一和第二幅度检测响应差异超过规定量时，当并且仅当该信道干扰具有足够强度才能令人反感时。

公开(公告)号：US09160576B1

公开(公告)日：2015-10-13

申请号：US14247921

申请日：2014-04-08

申请人： ARRIS Enterprises, Inc.

发明人： Ayham Al-Banna

IPC分类号： H03H7/30 ,  H04L25/03

CPC分类号： H04L25/03057 ,  H04L25/03343 ,  H04L2025/03547

摘要： Methods, systems, and computer readable media can be operable to conditionally use feedback equalization during equalization of a signal. In embodiments, a feedback component of a receiver can be turned off during initial ranging and periodic maintenance intervals, and resulting pre-equalization coefficients can be used to pre-distort subsequent data signals at a transmitter.

摘要翻译： 方法，系统和计算机可读介质可用于有条件地在信号均衡期间使用反馈均衡。 在实施例中，可以在初始测距和周期性维护间隔期间关闭接收机的反馈分量，并且所得到的预均衡系数可用于在发射机处对后续数据信号进行预失真。

公开(公告)号：US08837651B2

公开(公告)日：2014-09-16

申请号：US11844243

申请日：2007-08-23

申请人： Jae-Hoon Jeon

发明人： Jae-Hoon Jeon

IPC分类号： H04B1/10 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26

CPC分类号： H04L25/0232 ,  H04L25/0256 ,  H04L27/2647 ,  H04L2025/03547 ,  H04L2025/03726

摘要： An apparatus and a method for estimating a channel in a broadband wireless access system. A receiving apparatus includes a first channel estimation filter having a tap coefficient which is channel-adaptively variable, the first channel estimation filter acquiring a channel impulse response by filtering received pilot symbols, a second channel estimation filter having a fixed tap coefficient, the second channel estimation filter acquiring a channel impulse response by filtering received pilot symbols, and a selector which selects the operation of one of the first and the second channel estimation filters according to channel correlativity.

摘要翻译： 一种用于估计宽带无线接入系统中的信道的装置和方法。 接收装置包括具有信道自适应变化的抽头系数的第一信道估计滤波器，第一信道估计滤波器通过对接收到的导频符号进行滤波来获取信道脉冲响应，具有固定抽头系数的第二信道估计滤波器，第二信道 估计滤波器通过对接收到的导频符号进行滤波来获取信道脉冲响应;以及选择器，其根据信道相关性选择第一和第二信道估计滤波器之一的操作。

公开(公告)号：US20140204991A1

公开(公告)日：2014-07-24

申请号：US14118127

申请日：2011-05-19

申请人： Jinliang Huang ,  Tore Mikael André

发明人： Jinliang Huang ,  Tore Mikael André

IPC分类号： H04L25/03 ,  H04L1/20 ,  H04L27/38

CPC分类号： H04L25/03057 ,  H03M13/09 ,  H03M13/2957 ,  H03M13/2975 ,  H03M13/3715 ,  H03M13/612 ,  H03M13/6331 ,  H03M13/6525 ,  H04L1/0036 ,  H04L1/005 ,  H04L1/206 ,  H04L25/03006 ,  H04L25/03171 ,  H04L25/03955 ,  H04L27/38 ,  H04L2025/03547

摘要： The present disclosure relates to a receiving node, and to a related method for determining when to apply a turbo equalization mode to compensate for Inter-Symbol Interference in a radio signal received over a radio channel from a transmitting node. The method comprises decoding the received radio signal into a decoded signal, determining a current error level in the decoded signal, predicting a turbo equalization gain based on instantaneous channel information of the radio channel and deciding whether to apply the turbo equalization mode depending on the predicted turbo equalization gain and the determined current error level in the decoded signal.

摘要翻译： 本公开涉及接收节点，以及一种用于确定何时应用turbo均衡模式以补偿通过无线电信道从发射节点接收的无线电信号中的符号间干扰的相关方法。 该方法包括将接收到的无线电信号解码为解码信号，确定解码信号中的当前误差电平，基于无线电信道的瞬时信道信息预测turbo均衡增益，并根据预测值决定是否应用turbo均衡模式 turbo均衡增益和解码信号中确定的电流误差电平。

公开(公告)号：US08391337B2

公开(公告)日：2013-03-05

申请号：US12408703

申请日：2009-03-22

申请人： Peter J. Black ,  Michael A. Howard

发明人： Peter J. Black ,  Michael A. Howard

IPC分类号： H04B1/00

CPC分类号： H04B1/7115 ,  H04B1/7117 ,  H04B2201/7071 ,  H04L1/20 ,  H04L25/03019 ,  H04L2025/03547

摘要： Wireless communication receiver with hybrid equalizer and RAKE receiver. The receiver compares performance of the system for RAKE only and RAKE in combination with equalizer estimates. The receiver enables or disables the equalizer accordingly.

摘要翻译： 具有混合均衡器和RAKE接收机的无线通信接收机。 接收机将RAKE系统的性能与RAKE结合使用均衡器估算。 接收器相应地启用或禁用均衡器。