公开(公告)号：US09634388B2

公开(公告)日：2017-04-25

申请号：US13122181

申请日：2008-10-13

申请人： Juha Ylitalo ,  Taavi Hirvonen

发明人： Juha Ylitalo ,  Taavi Hirvonen

IPC分类号： H01Q3/30 ,  H04B7/0408 ,  H01Q21/08 ,  H01Q3/40 ,  H01Q21/29

CPC分类号： H01Q3/30 ,  H01Q3/40 ,  H01Q21/08 ,  H01Q21/29 ,  H04B7/0408

摘要： A fixed phase shift for each of a plurality of radio frequency signal components directed to or received from a plurality of antenna elements is formed in a phase shifter. A desired antenna beam pattern with at least one grating lobe is formed on the basis of the phase-shifted radio frequency signal components of the antenna elements in a predefined antenna structure.

公开(公告)号：US20110188595A9

公开(公告)日：2011-08-04

申请号：US12596230

申请日：2007-04-25

申请人： Juha Ylitalo

发明人： Juha Ylitalo

IPC分类号： H04B7/02

CPC分类号： H04B17/3912

摘要： A radio channel simulation system comprises a plurality of input buses for receiving a beam-specific transmit signal. A transformation module transforms a channel model from antenna domain to beam domain by using a transformation algorithm and beam forming weights. The channel model represented in the beam domain is inputted into a processing module which processes the beam-specific transmit signals according to the channel model represented in the beam domain.

摘要翻译： 无线电信道模拟系统包括用于接收波束专用发射信号的多个输入总线。 变换模块通过使用变换算法和波束形成权重将信道模型从天线域转换为波束域。 在波束域中表示的信道模型被输入到根据在波束域中表示的信道模型来处理波束特定发送信号的处理模块。

公开(公告)号：US07894857B2

公开(公告)日：2011-02-22

申请号：US10209195

申请日：2002-08-01

申请人： Juha Ylitalo

发明人： Juha Ylitalo

IPC分类号： H04M1/00 ,  H04B1/00

CPC分类号： H04B7/0615

摘要： The invention relates to a method and a system for improving operation of a radio link in a wireless communication system, such as a cellular radio system, by modifying the radiation pattern of an antenna array on the downlink by means of the information obtained from the uplink. The method comprises determining the location of a receiver for transmission by means of an angular power spectrum (400), for example. Then the radiation pattern of a transmitting antenna array is shaped on the basis of the location information on the receiver by selecting a window function which provides the desired radiation pattern and by implementing the form of the window function by means of antenna element specific coefficients (502, 504).

摘要翻译： 本发明涉及通过借助于从上行链路获得的信息修改下行链路上的天线阵列的辐射图案来改善诸如蜂窝无线电系统的无线通信系统中的无线电链路的操作的方法和系统 。 该方法包括例如通过角功率谱（400）来确定用于传输的接收机的位置。 然后，通过选择提供期望的辐射图案的窗口函数并且通过天线元素特定系数（502）来实现窗口函数的形式，基于接收机上的位置信息对发射天线阵列的辐射图案进行成形 ，504）。

公开(公告)号：US07792206B2

公开(公告)日：2010-09-07

申请号：US11068856

申请日：2005-03-02

申请人： Juha Ylitalo ,  Marcos Katz

发明人： Juha Ylitalo ,  Marcos Katz

IPC分类号： H04L1/02 ,  H04L27/00 ,  H03C7/00

CPC分类号： H04B7/0669 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0652 ,  H04L1/0618 ,  H04W52/42

摘要： A method includes receiving a reference signal and at least one delayed space-time encoded signal via at least two beams in which a time delay is associated with at least one of the at least two beams; determining channel state information based on the received reference signal and the received at least one delayed space-time encoded signal; and segmenting the channel state information into a plurality of channel state information segments.

摘要翻译： 一种方法包括经由至少两个波束接收参考信号和至少一个延迟的空时编码信号，其中时间延迟与至少两个波束中的至少一个相关联; 基于所接收的参考信号和所接收的至少一个延迟的空时编码信号来确定信道状态信息; 以及将所述信道状态信息分割成多个信道状态信息段。

公开(公告)号：US07403748B1

公开(公告)日：2008-07-22

申请号：US10240628

申请日：2000-04-07

申请人： Ilkka Keskitalo ,  Juha Ylitalo ,  Marcos Katz

发明人： Ilkka Keskitalo ,  Juha Ylitalo ,  Marcos Katz

IPC分类号： H04B7/02 ,  H04B17/00

CPC分类号： H04B7/0691 ,  H04B7/06 ,  H04B7/061 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/065 ,  H04B7/0669 ,  H04L1/0618

摘要： The present invention relates to a method and system for transmitting a transmission signal from an antenna array (19) to a receiving means (20) of a wireless communication system, wherein a signal quality measurement is performed at the receiving means (20) for predetermined antennas or beams of said antenna array (19). Based on a feedback information derived from the signal quality measurement, at least two of the predetermined antennas or beams of the antenna array (19) are selected. The selected antennas or beams are used for transmitting said transmission signal according to a transmit diversity or beamforming scheme. Thus, spectral efficiency and diversity gain can be enhanced by using only selected ones of the predetermined antennas or beams.

摘要翻译： 本发明涉及一种用于从天线阵列（19）向无线通信系统的接收装置（20）发送发送信号的方法和系统，其中在接收装置（20）处执行信号质量测量以预定 天线阵列（19）的天线或光束。 基于从信号质量测量导出的反馈信息，选择天线阵列（19）中的至少两个预定天线或波束。 所选择的天线或波束用于根据发射分集或波束成形方案传输所述传输信号。 因此，可以通过仅使用预定天线或波束中的选定的那些来增强频谱效率和分集增益。

公开(公告)号：US07171241B2

公开(公告)日：2007-01-30

申请号：US10712255

申请日：2003-11-14

申请人： Juha Ylitalo

发明人： Juha Ylitalo

IPC分类号： H04M1/00

CPC分类号： H04W52/42 ,  H01Q3/26 ,  H04B7/0452 ,  H04B7/0617 ,  H04W52/346

摘要： A method for determining weight factors of antenna beams, the method comprising using at least one directional antenna beam implemented with an antenna array to establish a radio link, forming a radio cell with the antenna beam, dividing the radio cell into at least two different cells by dividing the antenna beam, selecting weight factors of antenna elements of the antenna array such that the antenna element specific sums of weight factors of a radio cell formed with the antenna array and corresponding weight factors of at least one, second radio cell formed with the same antenna array are at least substantially equal within predetermined limits in order to achieve a predetermined power balance between different antenna elements.

摘要翻译： 一种用于确定天线波束的权重因子的方法，所述方法包括使用由天线阵列实现的至少一个定向天线波束建立无线电链路，与天线波束形成无线电小区，将无线电小区划分成至少两个不同的小区 通过分割天线波束，选择天线阵列的天线元件的重量因子，使得天线元件与天线阵列形成的无线电单元的加权因子的特定和和与形成有天线阵列的至少一个第二无线电单元的相应权重因子 相同的天线阵列在预定限度内至少基本相等，以便实现不同天线元件之间的预定功率平衡。

公开(公告)号：US20050101253A1

公开(公告)日：2005-05-12

申请号：US10760532

申请日：2004-01-21

申请人： Kari Pajukoski ,  Esa Tiirola ,  Juha Ylitalo

发明人： Kari Pajukoski ,  Esa Tiirola ,  Juha Ylitalo

IPC分类号： H04B17/40 ,  H04B1/707 ,  H04B7/08 ,  H04B7/005

CPC分类号： H04B7/0857

摘要： A multi-user receiver which uses at least two antenna elements and in which the influence of interference is reduced, the receiver comprises: means (200) for pre-filtering a wideband antenna signal, the pre-filtering means being determined on the basis of a spatial covariance matrix estimate, which spatial covariance matrix estimate is obtained from wideband antenna signals by sampling, arranging sampled values into a signal vector and by multiplying the signal vector by its conjugate transpose vector, means (210, 218) for removing the whitening from signals of predetermined users by using an inverse matrix of the matrix used in the whitening filter, means (202, 204, 206, 208, 210) for performing multi-path combining and multi-antenna combining.

摘要翻译： 一种使用至少两个天线元件并且其中减少了干扰影响的多用户接收机，所述接收机包括：用于对宽带天线信号进行预滤波的装置（200），所述预滤波装置基于 空间协方差矩阵估计，通过采样从宽带天线信号获得空间协方差矩阵估计，将采样值排列到信号向量中，并通过将信号向量乘以其共轭转置向量，将装置（210,218）从 通过使用在白化滤波器中使用的矩阵的逆矩阵来预定用户的信号，用于执行多路径组合和多天线组合的装置（202,204,206,208,210）。

公开(公告)号：US06671499B1

公开(公告)日：2003-12-30

申请号：US09609339

申请日：2000-07-05

申请人： Juha Ylitalo ,  Marcos Katz

发明人： Juha Ylitalo ,  Marcos Katz

IPC分类号： H04B702

CPC分类号： H04B7/0615 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0695 ,  H04B17/27 ,  H04B17/318

摘要： A method for directing an antenna beam, and a transceiver which comprises antenna arrays forming antenna beams in the transmission direction, by means of which beams a signal is transmitted, and which receives signals that propagate via different paths to the transceiver. The transceiver comprises estimating means for estimating directions of arrival of the received signals, when the transceiver receives signals propagated via different paths, measuring means for measuring the strengths of the signals received from different paths of arrival, and beam directing means. The directing means command the antenna array to form in the transmission direction the main antenna beam which is formed in the direction wherefrom the strongest signal is received, if the directions of arrival of the received signals differ only slightly from one another. If the directions of arrival of the received signals differ greatly from one another, the directing means command the antenna array to form, in addition to the main beam, one or more diversity beams, which are formed in the direction, wherefrom a signal exceeding the predetermined threshold value is received.

摘要翻译： 一种用于引导天线波束的方法，以及收发器，其包括在传输方向上形成天线波束的天线阵列，通过该天线波束发射信号，并且其接收经由不同路径传播到收发信机的信号。 收发器包括估计装置，用于当收发机接收经由不同路径传播的信号时，估计接收信号的到达方向，用于测量从不同到达路径接收的信号的强度的测量装置和波束定向装置。 如果接收信号的到达方向彼此稍微不同，则指导装置命令天线阵列在传输方向上形成沿接收最强信号的方向形成的主天线波束。 如果接收到的信号的到达方向彼此差异很大，除了主波束之外，引导装置还命令天线阵列形成一个或多个分集波束，该分集波束沿着方向形成，信号超过 接收预定的阈值。

公开(公告)号：US20090005120A1

公开(公告)日：2009-01-01

申请号：US11769973

申请日：2007-06-28

申请人： Juha Ylitalo

发明人： Juha Ylitalo

IPC分类号： H04Q7/20

CPC分类号： H04B7/0408 ,  H04B7/0667

摘要： A method and base station arrangement by which broadcast info messages can be transmitted using cyclic delays and a beamformer to the whole cell simultaneously. In the method during the broadcast info transmission cyclic delays are introduced to the transmitted symbols before the symbols are fed to a beamformer. The delayed symbols are transmitted using antennas connected to the beamformer. By utilizing cyclic delays dead zones can be avoided in the cell or sector. The method can be utilized for example in WiMAX, WiFi, UMTS or 3rd LTE networks.

摘要翻译： 一种方法和基站装置，通过该方法和基站装置，可以使用循环延迟发送广播信息消息，并且将波束形成器同时发送到整个小区。 在广播信息传输期间的方法中，在符号被馈送到波束形成器之前，将循环延迟引入到所发送的符号。 使用连接到波束形成器的天线发送延迟符号。 通过利用循环延迟，可以在单元或扇区中避免死区。 该方法可以用于例如WiMAX，WiFi，UMTS或第三LTE网络。

公开(公告)号：US07149547B2

公开(公告)日：2006-12-12

申请号：US10202638

申请日：2002-07-25

申请人： Marcos Katz ,  Juha Ylitalo

发明人： Marcos Katz ,  Juha Ylitalo

IPC分类号： H04M1/00 ,  H04Q7/20

CPC分类号： H04B7/0617 ,  H01Q3/26

摘要： The invention relates to a method and a system for implementing diversity in transmission utilizing orthogonal antenna beams formed using digital beam forming methods. In this method antenna beams are directed to be adjacent so as to set at least one of the estimated directions of arrival of the received signal within the range between antenna amplification maximums of the antenna beams and signal is sent using said antenna beams. An advantage provided by the method and system of the invention is to improve the performance of the system in the downlink direction and also to reduce the imbalance between the uplink performance and the downlink performance. The method of the Invention also allows to carry out power control specifically for each antenna beam.

摘要翻译： 本发明涉及使用数字波束形成方法形成的正交天线波束来实现传输中的分集的方法和系统。 在这种方法中，天线波束被引导为相邻，以便将接收信号的估计到达方向中的至少一个设置在天线波束的天线放大最大值和信号之间的范围内，并使用所述天线波束发送。 本发明的方法和系统提供的优点是提高系统在下行方向上的性能，并减少上行性能与下行性能之间的不平衡。 本发明的方法还允许特别为每个天线波束执行功率控制。