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1. 发明申请

US20100215113A1 Method and System for Pre-Coding For Frequency Selective Radio Communication Channel 有权
标题翻译：用于频率选择无线电通信信道的预编码方法和系统
公开(公告)号：US20100215113A1
公开(公告)日：2010-08-26
申请号：US12682706
申请日：2007-10-15
申请人： Ulf Lindgren , Leonid Krasny , Henrik Sahlin
发明人： Ulf Lindgren , Leonid Krasny , Henrik Sahlin
IPC分类号： H04B7/02 , H04L27/00
CPC分类号： H04L25/03343 , H04B7/0617 , H04B7/0626 , H04L2025/03426 , H04L2025/03802
摘要： A method for processing signals to be transmitted in a MIMO system from a transmitter having at least two transmitting antennas to a receiver having at least two receiving antennas on a frequency selective communication channel. The method comprises estimating elements of a channel matrix H(q−1) based on time delays and complex valued coefficients associated with the communication channel to provide an estimated frequency variation function of each element of the channel matrix, and pre-coding the signals to be transmitted based on the estimated frequency variation function for each element. The invention also relates to a MIMO system; and a transmitter and a receiver for use in a MIMO system.
摘要翻译：一种用于处理在MIMO系统中从具有至少两个发射天线的发射机发射到在频率选择性通信信道上具有至少两个接收天线的接收机的信号的方法。该方法包括基于与通信信道相关联的时间延迟和复值系数来估计信道矩阵H（q-1）的元素，以提供信道矩阵的每个元素的估计频率变化函数，并将该信号预编码为基于每个元素的估计频率变化函数来发送。本发明还涉及MIMO系统; 以及用于MIMO系统的发射机和接收机。

2. 发明授权

US09628232B2 Method of and a radio transmission system and radio access equipment for cellular wireless radio transmission 有权
公开(公告)号：US09628232B2
公开(公告)日：2017-04-18
申请号：US12936301
申请日：2008-04-07
申请人： Henrik Sahlin , Ulf Lindgren , Kambiz Zangi
发明人： Henrik Sahlin , Ulf Lindgren , Kambiz Zangi
IPC分类号： H04L5/06 , H04L5/26 , H04W56/00 , H04W88/08 , H04W92/10 , H04L5/00
CPC分类号： H04L5/0037 , H04L5/0023 , H04W56/0005 , H04W88/085 , H04W92/10
摘要： Radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based cellular wireless radio transmission system, wherein radio access equipment of the system connects to multiple geographically spread radio antennas of a Distributed Antenna System, DAS, for transmitting to and receiving radio signals from user equipment. Transmit timings for radio transmission between the user equipment and the antennas of the DAS are established. The radio transmission is scheduled based on the established transmit timings.

3. 发明申请

US20120219098A1 CONTROLLABLE FILTER TO DIAGONALIZE A TRANSMISSION CHANNEL 有权
标题翻译：可控滤波器，用于使传输通道对齐
公开(公告)号：US20120219098A1
公开(公告)日：2012-08-30
申请号：US13502432
申请日：2009-10-20
申请人： Ulf Lindgren , Henrik Sahlin
发明人： Ulf Lindgren , Henrik Sahlin
IPC分类号： H04B1/10 , H04L27/06
CPC分类号： H04L25/03114 , H04L25/0242 , H04L25/03993
摘要： The present invention relates to a node (1) in a wireless communication network, where the node (1) is arranged to receive at least two signals (y1(n), y2(n)) which correspond to at least two transmitted uncorrelated signal streams (x1(n), X2(n)) which have been transmitted to the node via a channel. The channel (2) is signals represented by means of a channel matrix (H(q−1)). The node (1) comprises a controllable filter structure (3) that is arranged to diagonalize the channel matrix (H(q−1)) such that a channel matrix estimation (Ĥ(q−1)) may be obtained. The present invention also relates to a corresponding method.
摘要翻译：本发明涉及无线通信网络中的节点（1），其中节点（1）被布置为接收与至少两个发送的不相关信号对应的至少两个信号（y1（n），y2（n）））已经通过信道被发送到节点的流（x1（n），X2（n））。信道（2）是通过信道矩阵（H（q-1））表示的信号。节点（1）包括可控滤波器结构（3），其被布置为使信道矩阵（H（q-1））对角化，使得可以获得信道矩阵估计（Ĥ（q-1））。本发明还涉及相应的方法。

4. 发明申请

US20120014467A1 Method of and Equipment For Compensating Carrier Frequency Offset in an Orthogonal Frequency Division Multiplexing Wireless Radio Transmission System 有权
标题翻译：在正交频分复用无线传输系统中补偿载波频偏的方法和设备
公开(公告)号：US20120014467A1
公开(公告)日：2012-01-19
申请号：US13254075
申请日：2009-03-06
申请人： Ulf Lindgren , Henrik Sahlin
发明人： Ulf Lindgren , Henrik Sahlin
IPC分类号： H04L27/28
CPC分类号： H04L27/266 , H04L27/2659
摘要： For compensating carrier frequency generation in communication equipment for radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based wireless radio communication system, in which reference signals known communication equipment are transmitted in a regular time repetitive manner, carrier frequency generation is compensated (63) by a calculated carrier frequency offset estimate. The carrier frequency offset estimate in the communication equipment is calculated from coarse (61) and fine carrier frequency offset estimates (62). The coarse carrier frequency offset estimate (61) is calculated in the frequency domain from reference symbols of a reference signal received (60) at the communication equipment and the fine carrier frequency offset estimate (62) is calculated in the time domain from reference symbols of reference signals repetitively received (60) at said communication equipment. An algorithm and an estimator module (90) for calculating a coarse carrier frequency offset are provided.
摘要翻译：为了补偿在正交频分复用的基于OFDM的无线电通信系统中的用于无线电传输的通信设备中的载波频率产生，其中通信设备已知的参考信号以规则的时间重复方式发送，载波频率产生被补偿（ 63）通过计算的载波频率偏移估计。通信设备中的载波频率偏移估计由粗略（61）和精细载波频率偏移估计（62）计算。在通信设备处接收到的参考信号（60）的参考符号的频域中计算粗略载波频率偏移估计（61），并且在时域中从参考符号的参考符号计算精细载波频率偏移估计（62）在所述通信设备处重复地接收（60）的参考信号。提供了一种用于计算粗载波频率偏移的算法和估计器模块（90）。

5. 发明授权

US09184947B2 Controllable filter to diagonalize a transmission channel 有权
标题翻译：可控滤波器将传输通道对角化
公开(公告)号：US09184947B2
公开(公告)日：2015-11-10
申请号：US13502432
申请日：2009-10-20
申请人： Ulf Lindgren , Henrik Sahlin
发明人： Ulf Lindgren , Henrik Sahlin
IPC分类号： H04L27/06 , H04L25/03 , H04L25/02
CPC分类号： H04L25/03114 , H04L25/0242 , H04L25/03993
摘要： The present invention relates to a node (1) in a wireless communication network, where the node (1) is arranged to receive at least two signals (y1(n), y2(n)) which correspond to at least two transmitted uncorrelated signal streams (x1(n), X2(n)) which have been transmitted to the node via a channel. The channel (2) is signals represented by means of a channel matrix (H(q−1)). The node (1) comprises a controllable filter structure (3) that is arranged to diagonalize the channel matrix (H(q−1)) such that a channel matrix estimation (Ĥ(q−1)) may be obtained. The present invention also relates to a corresponding method.
摘要翻译：本发明涉及无线通信网络中的节点（1），其中节点（1）被布置为接收与至少两个发送的不相关信号对应的至少两个信号（y1（n），y2（n）））已经通过信道被发送到节点的流（x1（n），X2（n））。信道（2）是通过信道矩阵（H（q-1））表示的信号。节点（1）包括可控滤波器结构（3），其被布置为使信道矩阵（H（q-1））对角化，使得可以获得信道矩阵估计（Ĥ（q-1））。本发明还涉及相应的方法。

6. 发明授权

US08660197B2 Method of and equipment for compensating carrier frequency offset in an orthogonal frequency division multiplexing wireless radio transmission system 有权
标题翻译：在正交频分复用无线电传输系统中补偿载频偏移的方法和设备
公开(公告)号：US08660197B2
公开(公告)日：2014-02-25
申请号：US13254075
申请日：2009-03-06
申请人： Ulf Lindgren , Henrik Sahlin
发明人： Ulf Lindgren , Henrik Sahlin
IPC分类号： H04K1/10
CPC分类号： H04L27/266 , H04L27/2659
摘要： For compensating carrier frequency generation in communication equipment for radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based wireless radio communication system, in which reference signals known communication equipment are transmitted in a regular time repetitive manner, carrier frequency generation is compensated (63) by a calculated carrier frequency offset estimate. The carrier frequency offset estimate in the communication equipment is calculated from coarse (61) and fine carrier frequency offset estimates (62). The coarse carrier frequency offset estimate (61) is calculated in the frequency domain from reference symbols of a reference signal received (60) at the communication equipment and the fine carrier frequency offset estimate (62) is calculated in the time domain from reference symbols of reference signals repetitively received (60) at said communication equipment. An algorithm and an estimator module (90) for calculating a coarse carrier frequency offset are provided.
摘要翻译：为了补偿在正交频分复用的基于OFDM的无线电通信系统中的用于无线电传输的通信设备中的载波频率产生，其中通信设备已知的参考信号以规则的时间重复方式发送，载波频率产生被补偿（ 63）通过计算的载波频率偏移估计。通信设备中的载波频率偏移估计由粗略（61）和精细载波频率偏移估计（62）计算。在通信设备处接收到的参考信号（60）的参考符号的频域中计算粗略载波频率偏移估计（61），并且在时域中从参考符号的参考符号计算精细载波频率偏移估计（62）在所述通信设备处重复地接收（60）的参考信号。提供了一种用于计算粗载波频率偏移的算法和估计器模块（90）。

7. 发明授权

US08711987B2 Method and receiver for jointly decoding received communication signals using maximum likelihood detection 有权
标题翻译：使用最大似然检测联合解码接收到的通信信号的方法和接收机
公开(公告)号：US08711987B2
公开(公告)日：2014-04-29
申请号：US13264192
申请日：2009-04-16
申请人： Henrik Sahlin , Ulf Lindgren , Peter Naucler , Chester Park
发明人： Henrik Sahlin , Ulf Lindgren , Peter Naucler , Chester Park
IPC分类号： H04L27/06
CPC分类号： H04L27/2647 , H04L25/0204 , H04L25/0246 , H04L25/025 , H04L25/03159 , H04L25/03216 , H04L25/03254 , H04L25/0328 , H04L25/03299 , H04L25/03305 , H04L25/03318 , H04L2025/03375
摘要： The present invention relates to a method in a receiver for decoding at least two received communication signals, wherein the communication signals are modulated, pre-coded by a discrete Fourier transform and transmitted by means of single-carrier frequency division multiple access scheme (SC-FDMA). The method comprises the steps of: performing an antenna combining and equalization on a signal observed at the receiver; performing inverse discrete Fourier transform on a model of the observed signal; whitening a time domain model of the observed signal; and jointly detecting the received at least two communication signals by performing soft value calculations based on maximum likelihood detection of a whitened time domain model using a whitened time domain channel estimate.
摘要翻译：本发明涉及用于对至少两个接收到的通信信号进行解码的接收机中的方法，其中通过离散付里叶变换对通信信号进行调制，预编码，并通过单载波频分多址方案（SC- FDMA）。该方法包括以下步骤：对接收机上观察到的信号执行天线组合和均衡; 对观测信号的模型执行逆离散傅里叶变换; 美白观察信号的时域模型; 并且通过使用白化的时域信道估计基于白化时域模型的最大似然检测执行软值计算来共同检测所接收的至少两个通信信号。

8. 发明授权

US08509334B2 Method and system for pre-coding for frequency selective radio communication channel 有权
标题翻译：用于频率选择无线电通信信道预编码的方法和系统
公开(公告)号：US08509334B2
公开(公告)日：2013-08-13
申请号：US12682706
申请日：2007-10-15
申请人： Ulf Lindgren , Leonid Krasny , Henrik Sahlin
发明人： Ulf Lindgren , Leonid Krasny , Henrik Sahlin
IPC分类号： H04B7/02 , H04L27/06
CPC分类号： H04L25/03343 , H04B7/0617 , H04B7/0626 , H04L2025/03426 , H04L2025/03802
摘要： A method for processing signals to be transmitted in a MIMO system from a transmitter having at least two transmitting antennas to a receiver having at least two receiving antennas on a frequency selective communication channel. The method comprises estimating elements of a channel matrix H(q−1) based on time delays and complex valued coefficients associated with the communication channel to provide an estimated frequency variation function of each element of the channel matrix, and pre-coding the signals to be transmitted based on the estimated frequency variation function for each element. The invention also relates to a MIMO system; and a transmitter and a receiver for use in a MIMO system.
摘要翻译：一种用于处理在MIMO系统中从具有至少两个发射天线的发射机发射到在频率选择性通信信道上具有至少两个接收天线的接收机的信号的方法。该方法包括基于与通信信道相关联的时间延迟和复值系数来估计信道矩阵H（q-1）的元素，以提供信道矩阵的每个元素的估计频率变化函数，并将该信号预编码为基于每个元素的估计频率变化函数来发送。本发明还涉及MIMO系统; 以及用于MIMO系统的发射机和接收机。

9. 发明申请

US20120033683A1 Method and Receiver For Jointly Decoding Received Communication Signals Using Maximum Likelihood Detection 有权
标题翻译：用于使用最大似然检测联合解码接收到的通信信号的方法和接收器
公开(公告)号：US20120033683A1
公开(公告)日：2012-02-09
申请号：US13264192
申请日：2009-04-16
申请人： Henrik Sahlin , Ulf Lindgren , Peter Naucler , Chester Park
发明人： Henrik Sahlin , Ulf Lindgren , Peter Naucler , Chester Park
IPC分类号： H04J1/00
CPC分类号： H04L27/2647 , H04L25/0204 , H04L25/0246 , H04L25/025 , H04L25/03159 , H04L25/03216 , H04L25/03254 , H04L25/0328 , H04L25/03299 , H04L25/03305 , H04L25/03318 , H04L2025/03375
摘要： The present invention relates to a method in a receiver for decoding at least two received communication signals, wherein the communication signals are modulated, pre-coded by a discrete Fourier transform and transmitted by means of single-carrier frequency division multiple access scheme (SC-FDMA). The method comprises the steps of: performing an antenna combining and equalization on a signal observed at the receiver; performing inverse discrete Fourier transform on a model of the observed signal; whitening a time domain model of the observed signal; and jointly detecting the received at least two communication signals by performing soft value calculations based on maximum likelihood detection of a whitened time domain model using a whitened time domain channel estimate.
摘要翻译：本发明涉及用于对至少两个接收到的通信信号进行解码的接收机中的方法，其中通过离散付里叶变换对通信信号进行调制，预编码，并通过单载波频分多址方案（SC- FDMA）。该方法包括以下步骤：对接收机上观察到的信号执行天线组合和均衡; 对观测信号的模型执行逆离散傅里叶变换; 美白观察信号的时域模型; 并且通过使用白化的时域信道估计基于白化时域模型的最大似然检测执行软值计算来共同检测所接收的至少两个通信信号。

10. 发明申请

US20110026626A1 METHOD OF AND A RADIO TRANSMISSION SYSTEM AND RADIO ACCESS EQUIPMENT FOR CELLULAR WIRELESS RADIO TRANSMISSION 有权
标题翻译：无线电传输系统和无线电接入设备的无线电无线电传输方法和无线电接入设备
公开(公告)号：US20110026626A1
公开(公告)日：2011-02-03
申请号：US12936301
申请日：2008-04-07
申请人： Henrik Sahlin , Ulf Lindgren , Kambiz Zangi
发明人： Henrik Sahlin , Ulf Lindgren , Kambiz Zangi
IPC分类号： H04L27/28
CPC分类号： H04L5/0037 , H04L5/0023 , H04W56/0005 , H04W88/085 , H04W92/10
摘要： Radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based cellular wireless radio transmission system, wherein radio access equipment of the system connects to multiple geographically spread radio antennas of a Distributed Antenna System, DAS, for transmitting to and receiving radio signals from user equipment. Transmit timings for radio transmission between the user equipment and the antennas of the DAS are established. The radio transmission is scheduled based on the established transmit timings.
摘要翻译：在正交频分复用OFDM基于蜂窝无线电传输系统中的无线电传输，其中系统的无线电接入设备连接到分布式天线系统DAS的多个地理上扩展的无线电天线，用于发送和接收来自用户设备的无线电信号。建立用户设备和DAS天线之间无线电传输的发送定时。基于建立的发送定时来调度无线电传输。

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