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1. 发明授权

US09461773B2 Method and a node for detecting phase noise in MIMO communication systems 有权
标题翻译： MIMO通信系统中相位噪声检测方法和节点
公开(公告)号：US09461773B2
公开(公告)日：2016-10-04
申请号：US14420352
申请日：2012-08-09
申请人： Stefano Chinnici , Mats Rydstrom , Alberto Tarable , Guido Montorsi
发明人： Stefano Chinnici , Mats Rydstrom , Alberto Tarable , Guido Montorsi
IPC分类号： H03D1/00 , H04L27/06 , H04L1/00 , H04L25/02 , H04L27/00 , H04B7/04 , H04L7/00 , H04L7/033 , H04L27/26
CPC分类号： H04L1/0054 , H04B7/0413 , H04L7/0087 , H04L7/0331 , H04L25/0204 , H04L25/0232 , H04L27/0014 , H04L27/2659 , H04L27/266 , H04L2027/0067
摘要： A method for phase noise detection in a MIMO communication system comprises the step of computing an initial estimate of phase using received pilot symbols. A phase follows for interpolating between successive pilot symbol phase estimates to obtain a coarse resolution reference phase estimate. Then, it follows a phase for computing a fine resolution estimate of phase using said coarse resolution phase estimate together with data expressing characteristics of known phase noise processes, applying an expectation maximization (EM) algorithm. The application of the EM algorithm can be further refined using improved symbol decisions from a FEC decoding.
摘要翻译： MIMO通信系统中的相位噪声检测方法包括以下步骤：使用接收到的导频符号来计算相位的初始估计。在相继的导频符号相位估计之间进行内插以获得粗分辨率参考相位估计。然后，它遵循用于使用所述粗分辨率相位估计与表示已知相位噪声处理的特性的数据计算相位的精细分辨率估计的相位，应用期望最大化（EM）算法。可以使用来自FEC解码的改进的符号决定来进一步改进EM算法的应用。

2. 发明申请

US20150215071A1 METHOD AND A NODE FOR DETECTING PHASE NOISE IN MIMO COMMUNICATION SYSTEMS 有权
标题翻译： MIMO通信系统中检测相位噪声的方法和节点
公开(公告)号：US20150215071A1
公开(公告)日：2015-07-30
申请号：US14420352
申请日：2012-08-09
申请人： Stefano Chinnici , Mats Rydstrom , Alberto Tarable , Guido Montorsi
发明人： Stefano Chinnici , Mats Rydstrom , Alberto Tarable , Guido Montorsi
IPC分类号： H04L1/00 , H04L7/00 , H04L7/033 , H04B7/04
CPC分类号： H04L1/0054 , H04B7/0413 , H04L7/0087 , H04L7/0331 , H04L25/0204 , H04L25/0232 , H04L27/0014 , H04L27/2659 , H04L27/266 , H04L2027/0067
摘要： A method for phase noise detection in a MIMO communication system comprises the step of computing an initial estimate of phase using received pilot symbols. A phase follows for interpolating between successive pilot symbol phase estimates to obtain a coarse resolution reference phase estimate. Then, it follows a phase for computing a fine resolution estimate of phase using said coarse resolution phase estimate together with data expressing characteristics of known phase noise processes, applying an expectation maximization (EM) algorithm. The application of the EM algorithm can be further refined using improved symbol decisions from a FEC decoding.
摘要翻译： MIMO通信系统中的相位噪声检测方法包括以下步骤：使用接收到的导频符号来计算相位的初始估计。在相继的导频符号相位估计之间进行内插以获得粗分辨率参考相位估计。然后，它遵循用于使用所述粗分辨率相位估计与表示已知相位噪声处理的特性的数据计算相位的精细分辨率估计的相位，应用期望最大化（EM）算法。可以使用来自FEC解码的改进的符号决定来进一步改进EM算法的应用。

3. 发明申请

US20140010271A1 SIGNAL PROCESSING FOR DIVERSITY COMBINING RADIO RECEIVER 有权
标题翻译：用于组合无线电接收机的信号处理
公开(公告)号：US20140010271A1
公开(公告)日：2014-01-09
申请号：US13977517
申请日：2010-12-28
申请人： Mats Rydstrom , Dan Weinholt
发明人： Mats Rydstrom , Dan Weinholt
IPC分类号： H04B7/08
CPC分类号： H04B7/0851 , H04B7/0854
摘要： A signal processing device for a diversity combining radio receiver is disclosed. Said device comprises a plurality of receive branches and a joint detector adapted to determine a joint received symbol based on a combined signal. Said device also comprises a control unit adapted to determine a branch signal error based on the joint received symbol and the input signal of that receive branch. Each receive branch further comprises an adaptive filter. The control unit is adapted to update the coefficients of the adaptive filter of each receive branch based on a weighted signal error combination, wherein weight of the weighted signal error combination is selected based on channel conditions. A corresponding diversity combining radio receiver, a corresponding electronic apparatus, a corresponding method, a corresponding computer program product, and a corresponding computer readable medium are also disclosed.
摘要翻译：公开了一种用于分集组合无线电接收机的信号处理装置。所述设备包括多个接收分支和联合检测器，其适于基于组合信号确定联合接收符号。所述设备还包括控制单元，其适于基于所述联合接收符号和所述接收分支的输入信号确定分支信号误差。每个接收分支还包括自适应滤波器。控制单元适于基于加权信号误差组合来更新每个接收分支的自适应滤波器的系数，其中基于信道条件选择加权信号误差组合的权重。还公开了相应的分集组合无线电接收机，对应的电子设备，相应的方法，相应的计算机程序产品和相应的计算机可读介质。

4. 发明授权

US09001877B2 Signal processing for diversity combining radio receiver 有权
标题翻译：用于分集组合无线电接收机的信号处理
公开(公告)号：US09001877B2
公开(公告)日：2015-04-07
申请号：US13977517
申请日：2010-12-28
申请人： Mats Rydstrom , Dan Weinholt
发明人： Mats Rydstrom , Dan Weinholt
IPC分类号： H04B7/08
CPC分类号： H04B7/0851 , H04B7/0854
摘要： A signal processing device for a diversity combining radio receiver is disclosed. Said device comprises a plurality of receive branches and a joint detector adapted to determine a joint received symbol based on a combined signal. Said device also comprises a control unit adapted to determine a branch signal error based on the joint received symbol and the input signal of that receive branch. Each receive branch further comprises an adaptive filter. The control unit is adapted to update the coefficients of the adaptive filter of each receive branch based on a weighted signal error combination, wherein weight of the weighted signal error combination is selected based on channel conditions. A corresponding diversity combining radio receiver, a corresponding electronic apparatus, a corresponding method, a corresponding computer program product, and a corresponding computer readable medium are also disclosed.
摘要翻译：公开了一种用于分集组合无线电接收机的信号处理装置。所述设备包括多个接收分支和联合检测器，其适于基于组合信号确定联合接收符号。所述设备还包括控制单元，其适于基于所述联合接收符号和所述接收分支的输入信号确定分支信号误差。每个接收分支还包括自适应滤波器。控制单元适于基于加权信号误差组合来更新每个接收分支的自适应滤波器的系数，其中基于信道条件选择加权信号误差组合的权重。还公开了相应的分集组合无线电接收机，对应的电子设备，相应的方法，相应的计算机程序产品和相应的计算机可读介质。

5. 发明授权

US09231805B2 Device for carrier phase recovery 有权
标题翻译：载体相恢复装置
公开(公告)号：US09231805B2
公开(公告)日：2016-01-05
申请号：US14413478
申请日：2012-07-09
申请人： Thomas Eriksson , Mats Rydstrom
发明人： Thomas Eriksson , Mats Rydstrom
IPC分类号： H04B15/00 , H04L27/227 , H04L27/00 , H04L27/20 , H04L27/36 , H04L27/38 , H04L25/03
CPC分类号： H04L27/2278 , H04L25/03121 , H04L25/03343 , H04L25/03993 , H04L27/0014 , H04L27/2075 , H04L27/367 , H04L27/3872 , H04L2025/0342 , H04L2027/0018 , H04L2027/0028
摘要： A transmitter comprising a baseband modulator arranged to modulate a complex baseband signal and to output a complex modulated signal xin(n) with amplitude g and phase q, i.e. xin(n)=g(n)ejq(n), to the input port of a filter, the filter in turn having its output coupled to a transmit unit, said filter being arranged to output a filtered complex output signal xout(n) with amplitude g but phase m, i.e. xout(n)=g(n)ejm(n), so that the filter is arranged to affect the phase but not the amplitude of its input signal. The filter is arranged to have as its transfer function for the phase of its input signal the z-transform F(z)=1+wz−1, where w is a weighting function whose value is determined by means of the additive noise autocorrelation, the phase noise autocorrelation and the signal amplitude of xin.
摘要翻译：一种发射机，包括：基带调制器，被配置为调制复基带信号，并输出具有振幅g和相位q（即xin（n）= g（n）ejq（n））的复调制信号xin（n）滤波器又具有耦合到发射单元的输出，所述滤波器被布置成输出具有振幅g但相位m的滤波复输出信号xout（n），即xout（n）= g（n）ejm （n），使得滤波器被布置成影响其输入信号的相位而不影响其幅度。滤波器被布置成具有用于其输入信号的相位的传递函数，z变换F（z）= 1 + wz-1，其中w是其值通过加性噪声自相关确定的加权函数，相位噪声自相关和信号幅度。

6. 发明申请

US20150215145A1 DEVICE FOR CARRIER PHASE RECOVERY 有权
标题翻译：用于载波相位恢复的装置
公开(公告)号：US20150215145A1
公开(公告)日：2015-07-30
申请号：US14413478
申请日：2012-07-09
申请人： Thomas Eriksson , Mats Rydstrom
发明人： Thomas Eriksson , Mats Rydstrom
IPC分类号： H04L27/227 , H04L25/03
CPC分类号： H04L27/2278 , H04L25/03121 , H04L25/03343 , H04L25/03993 , H04L27/0014 , H04L27/2075 , H04L27/367 , H04L27/3872 , H04L2025/0342 , H04L2027/0018 , H04L2027/0028
摘要： A transmitter comprising a baseband modulator arranged to modulate a complex baseband signal and to output a complex modulated signal xin(n) with amplitude g and phase q, i.e. xin(n)=g(n)ejq(n), to the input port of a filter, the filter in turn having its output coupled to a transmit unit, said filter being arranged to output a filtered complex output signal xout(n) with amplitude g but phase m, i.e. xout(n)=g(n)ejm(n), so that the filter is arranged to affect the phase but not the amplitude of its input signal. The filter is arranged to have as its transfer function for the phase of its input signal the z-transform F(z)=1+wz−1, where w is a weighting function whose value is determined by means of the additive noise autocorrelation, the phase noise autocorrelation and the signal amplitude of xin.
摘要翻译：一种发射机，包括：基带调制器，被配置为调制复基带信号，并输出具有振幅g和相位q（即xin（n）= g（n）ejq（n））的复调制信号xin（n）滤波器又具有耦合到发射单元的输出，所述滤波器被布置成输出具有振幅g但相位m的滤波复输出信号xout（n），即xout（n）= g（n）ejm （n），使得滤波器被布置成影响其输入信号的相位而不影响其幅度。滤波器被布置成具有用于其输入信号的相位的传递函数，z变换F（z）= 1 + wz-1，其中w是其值通过加性噪声自相关确定的加权函数，相位噪声自相关和信号幅度。

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