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1. 发明授权

US06747594B2 Calibration of differential frequency-dependent characteristics of a radio communications system 失效
标题翻译：校准无线电通信系统的差分频率相关特性
公开(公告)号：US06747594B2
公开(公告)日：2004-06-08
申请号：US10294948
申请日：2002-11-14
申请人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
发明人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
IPC分类号： G01S740
CPC分类号： H04B7/12 , H01Q3/267 , H04B7/0613 , H04B7/0837 , H04B17/12 , H04B17/21
摘要： A method and apparatus are provided that determine a frequency dependent calibration vector for a set of transmit or receive chains of a radio communications system using only differential phase and amplitude between the transmit chains and the receive chains, respectively. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal. A signal processor determines a frequency dependent calibration vector based on the at least two frequency bands of the transponder signal as received through the receive chain by comparing relative characteristics for the transponder signal at a first one of the at least two frequencies to relative characteristics for the transponder signal at a second one of the at least two frequencies.
摘要翻译：提供了一种方法和装置，其分别仅使用发射链和接收链之间的差分相位和幅度来确定无线电通信系统的一组发射或接收链的频率相关校准矢量。在一个实施例中，本发明包括适于与多个其他终端发送和接收无线电通信信号的天线阵列，通过天线阵列将校准信号发射到至少两个不同频带上的应答器的发射链，以及接收链，以通过天线阵列接收来自应答器的应答器信号，应答器信号在至少两个不同频带上被接收并且基于校准信号。信号处理器基于通过接收链接收的应答器信号的至少两个频带来确定与频率相关的校准矢量，通过将在至少两个频率中的第一个频率上的应答器信号的相对特性相对于在所述至少两个频率中的第二个频率处的应答器信号。

2. 发明授权

US06865377B1 Combined open and closed loop beam forming in a multiple array radio communication system 失效
标题翻译：在多阵列无线电通信系统中组合开和闭环波束形成
公开(公告)号：US06865377B1
公开(公告)日：2005-03-08
申请号：US10187036
申请日：2002-06-28
申请人： Erik D. Lindskog , Adam B. Kerr , Christopher Brunner , Mitchell D. Trott
发明人： Erik D. Lindskog , Adam B. Kerr , Christopher Brunner , Mitchell D. Trott
IPC分类号： H04B7/06 , H04B1/02 , H04C7/02
CPC分类号： H04B7/0634 , H04B7/0617 , H04B7/0632
摘要： A method and apparatus are provided that can combine the benefits of beamforming with transmit diversity. In one embodiment, the invention includes sampling a signal received from a remote radio at elements of an antenna array, deriving spatial parameters for transmitting a signal to the remote radio from an antenna array, sampling the signal received from the remote radio at elements of at least one additional antenna array, and deriving spatial parameters for transmitting a signal to the remote radio from the at least one additional antenna array. The invention further includes generating diversity parameters for transmitting a signal to the remote radio using each antenna array as an element of a diversity array, and transmitting a signal to the remote radio using the spatial parameters and the diversity parameters.
摘要翻译：提供了一种可以将波束成形与发射分集的优点组合的方法和装置。在一个实施例中，本发明包括对从天线阵列的元件的远程无线电接收的信号进行采样，导出用于从天线阵列向远程无线电发送信号的空间参数，至少一个附加天线阵列，以及导出用于从所述至少一个附加天线阵列向远程无线电发送信号的空间参数。本发明还包括生成用于使用每个天线阵列作为分集阵列的元件将信号发送到远程无线电的分集参数，以及使用空间参数和分集参数将信号发送到远程无线电装置。

3. 发明授权

US07039016B1 Calibration of wideband radios and antennas using a narrowband channel 有权
标题翻译：使用窄带通道校准宽带无线电和天线
公开(公告)号：US07039016B1
公开(公告)日：2006-05-02
申请号：US09967127
申请日：2001-09-28
申请人： Erik D. Lindskog , Mitchell D. Trott
发明人： Erik D. Lindskog , Mitchell D. Trott
IPC分类号： H04Q7/34
CPC分类号： H01Q3/267 , H04W24/00
摘要： A method and apparatus are provided that calibrate a wideband radio communications system without causing significant interference with simultaneous users of the system. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals the communications signals each using a particular minimum bandwidth. A transmit chain transmits a calibration signal through the antenna array to a transponder, and a receive chain receives through the antenna array a transponder signal from the transponder, the transponder signal being based on the calibration signal and having a bandwidth narrower than the minimum bandwidth. A signal processor measures characteristics of the transponder signal as received through the receive chain. These can be used to determine spatial signatures and to calibrate the transmit chain and the receive chain.
摘要翻译：提供了一种校准宽带无线电通信系统而不对系统的同时用户造成显着干扰的方法和装置。在一个实施例中，本发明包括天线阵列，其适于与多个其他终端发送和接收每个使用特定最小带宽的通信信号的无线电通信信号。发射链通过天线阵列将校准信号发送到应答器，并且接收链通过天线阵列接收来自应答器的应答器信号，应答器信号基于校准信号并且具有比最小带宽窄的带宽。信号处理器测量通过接收链接收的应答器信号的特性。这些可用于确定空间签名并校准传输链和接收链。

4. 发明授权

US06738020B1 Estimation of downlink transmission parameters in a radio communications system with an adaptive antenna array 失效
标题翻译：具有自适应天线阵列的无线电通信系统中下行链路传输参数的估计
公开(公告)号：US06738020B1
公开(公告)日：2004-05-18
申请号：US10153515
申请日：2002-05-21
申请人： Erik D. Lindskog , Mitchell D. Trott , Hafedh Trigui , Serge de la Barbosa
发明人： Erik D. Lindskog , Mitchell D. Trott , Hafedh Trigui , Serge de la Barbosa
IPC分类号： H01Q300
CPC分类号： H04B7/0634 , H01Q3/2605 , H04B7/0643 , H04W52/42
摘要： A method and apparatus are provided that allows system calibration to be incorporated into a single function that also derives transmit parameters from receive parameters in a spatial diversity system. In one embodiment, the invention includes receiving signals at an antenna array from a plurality of different locations, deriving characterizations of the spatial parameters of the received signals, receiving measurements of a plurality of different signals transmitted from the antenna array to a plurality of different locations, deriving characterizations of the spatial parameters of the transmitted signals from the received measurements, and generating a transformation function for producing transmit spatial parameters based on measurements of received signals using the receive spatial parameter characterizations and the transmit spatial parameter characterizations.
摘要翻译：提供了一种方法和装置，其允许系统校准被并入单个功能，其也从空间分集系统中的接收参数导出发射参数。在一个实施例中，本发明包括从多个不同位置在天线阵列处接收信号，导出接收信号的空间参数的表征，接收从天线阵列发送到多个不同位置的多个不同信号的测量值从接收到的测量中导出所发射信号的空间参数的特性，以及基于使用接收空间参数表征和传输空间参数表征的接收信号的测量来生成用于产生发射空间参数的变换函数。

5. 发明授权

US06570527B1 Calibration of differential frequency-dependent characteristics of a radio communications system 有权
标题翻译：校准无线电通信系统的差分频率相关特性
公开(公告)号：US06570527B1
公开(公告)日：2003-05-27
申请号：US09967258
申请日：2001-09-28
申请人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
发明人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
IPC分类号： G01S740
CPC分类号： H04B7/12 , H01Q3/267 , H04B7/0613 , H04B7/0837 , H04B17/12 , H04B17/21
摘要： A method and apparatus are provided that determine a frequency dependent calibration vector for a set of transmit or receive chains of a radio communications system using only differential phase and amplitude between the transmit chains and the receive chains, respectively. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal. A signal processor determines a frequency dependent calibration vector based on the at least two frequency bands of the transponder signal as received through the receive chain by comparing relative characteristics for the transponder signal at a first one of the at least two frequencies to relative characteristics for the transponder signal at a second one of the at least two frequencies.
摘要翻译：提供了一种方法和装置，其分别仅使用发射链和接收链之间的差分相位和幅度来确定无线电通信系统的一组发射或接收链的频率相关校准矢量。在一个实施例中，本发明包括适于与多个其他终端发送和接收无线电通信信号的天线阵列，通过天线阵列将校准信号发射到至少两个不同频带上的应答器的发射链，以及接收链，以通过天线阵列接收来自应答器的应答器信号，应答器信号在至少两个不同频带上被接收并且基于校准信号。信号处理器基于通过接收链接收的应答器信号的至少两个频带来确定与频率相关的校准矢量，通过将在至少两个频率中的第一个频率上的应答器信号的相对特性相对于在所述至少两个频率中的第二个频率处的应答器信号。

6. 发明授权

US07372911B1 Beam forming and transmit diversity in a multiple array radio communications system 有权
标题翻译：波束形成和多阵列无线电通信系统中的发射分集
公开(公告)号：US07372911B1
公开(公告)日：2008-05-13
申请号：US10187231
申请日：2002-06-28
申请人： Erik D. Lindskog , Mitchell D. Trott
发明人： Erik D. Lindskog , Mitchell D. Trott
IPC分类号： H04L1/02
CPC分类号： H04B7/0689 , H04B7/0617
摘要： A method and apparatus are provided for selecting transmission parameters for multiple transmit antenna arrays. In one embodiment, the invention includes receiving a signal from a remote radio, measuring the transmit coherency of the received signal, selecting, based on the transmit coherency, whether to apply coherent combining to signals transmitted to the remote radio using each of two transmit antenna arrays to each form a beam to coherently combine with each other beam upon receipt by the remote radio, selecting, based on the transmit coherency, whether to apply transmit diversity to signals transmitted to the remote radio using each of the two transmit antenna arrays as diversity antennas. The embodiment further includes determining signal transmission parameters to apply to the two antenna arrays for transmissions to the remote radio based on the selections, and transmitting a signal to the remote radio from the two transmit antenna arrays by applying the determined signal transmission parameters to the two transmit antenna arrays.
摘要翻译：提供一种用于选择多个发射天线阵列的传输参数的方法和装置。在一个实施例中，本发明包括从远程无线电接收信号，测量接收信号的发射一致性，基于发射一致性，选择是否使用两个发射天线中的每一个发射到远程无线电的信号应用相干组合阵列到每个形成一个波束，以便在被远程无线电接收时相互组合地彼此组合，基于发射一致性来选择是否使用两个发射天线阵列中的每一个发射到远程无线电的信号作为分集天线。该实施例还包括基于选择确定应用于两个天线阵列的信号传输参数以传输到远程无线电，并且通过将确定的信号传输参数应用于两个发射天线阵列，将信号从两个发射天线阵列发射到远程无线电装置发射天线阵列。

7. 发明授权

US07342912B1 Selection of user-specific transmission parameters for optimization of transmit performance in wireless communications using a common pilot channel 有权
标题翻译：选择用户特定的传输参数，以优化使用公共导频信道的无线通信中的传输性能
公开(公告)号：US07342912B1
公开(公告)日：2008-03-11
申请号：US10187026
申请日：2002-06-28
申请人： Adam B. Kerr , Erik D. Lindskog , Christopher Brunner , Mitchell D. Trott
发明人： Adam B. Kerr , Erik D. Lindskog , Christopher Brunner , Mitchell D. Trott
IPC分类号： H04B7/212 , H04B1/76
CPC分类号： H04B7/0615 , H04L25/0224
摘要： A method and apparatus are provided that optimizes a transmitted user-specific signal. In one embodiment, the invention includes receiving signals from a remote radio, deriving estimates of receive channels corresponding to the received signals using the received signals, deriving a model of an expected transmit channel to the remote radio based on the receive channel estimates, deriving a set of transmit parameters to be applied to an array of transmit antennas to transmit a signal to the remote radio by optimizing a transmit power criteria using the model of the expected transmit channel and constraints on the estimated quality of a signal transmitted over the expected transmit channel, and transmitting to the remote radio by applying the derived set of transmit parameters to the transmit antenna array.
摘要翻译：提供了一种优化发送的用户特定信号的方法和装置。在一个实施例中，本发明包括从远程无线电接收信号，使用接收到的信号导出对应于接收信号的接收信道的估计，基于接收信道估计导出到远程无线电的期望发射信道的模型，导出通过使用预期发射信道的模型优化发射功率标准并对通过预期发射信道传输的信号的估计质量的约束来将应用于发射天线阵列的发射参数集合发射到远程无线电信号。并且通过将衍生的发射参数集合应用于发射天线阵列来发射到远程无线电装置。

8. 发明授权

US06983127B1 Statistical calibration of wireless base stations 失效
标题翻译：无线基站的统计校准
公开(公告)号：US06983127B1
公开(公告)日：2006-01-03
申请号：US10209500
申请日：2002-07-31
申请人： Serge Barbosa Da Torre , David M. Parish , Athos Kasapi , Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
发明人： Serge Barbosa Da Torre , David M. Parish , Athos Kasapi , Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
IPC分类号： H04B17/00
CPC分类号： H04B17/20 , H04B7/04 , H04B7/0634 , H04B17/10
摘要： The present invention allows a radio receiver or a transmitter, with a plurality of antennas configured into an array, to be calibrated. In one embodiment, the method includes receiving a plurality of signals from a plurality of remote transmitters at the antenna array, sampling the signals received at at least two antennas of the array, computing a relative phase and amplitude of the sampled signals for each antenna, and computing calibration coefficients based on the relative phase and amplitude for the plurality of sampled signals from the plurality of remote transmitters for each antenna.
摘要翻译：本发明允许校准具有配置成阵列的多个天线的无线电接收机或发射机。在一个实施例中，该方法包括从天线阵列处的多个远程发射机接收多个信号，对在阵列的至少两个天线处接收的信号进行采样，计算每个天线的采样信号的相对相位和幅度，以及基于每个天线的来自多个远程发射机的多个采样信号的相对相位和幅度来计算校准系数。

9. 发明授权

US06788948B2 Frequency dependent calibration of a wideband radio system using narrowband channels 失效
标题翻译：使用窄带信道的宽带无线电系统的频率相关校准
公开(公告)号：US06788948B2
公开(公告)日：2004-09-07
申请号：US09967767
申请日：2001-09-28
申请人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
发明人： Erik D. Lindskog , Mitchell D. Trott , Adam B. Kerr
IPC分类号： G01S1374
CPC分类号： H01Q3/267
摘要： A method and apparatus are provided that determine group delay for a set of transmit or receive chains over a wide frequency band without causing significant interference with simultaneous users of the system. In one embodiment, the invention includes an antenna array adapted to transmit and receive radio communications signals with a plurality of other terminals, the communications signals each using a particular minimum bandwidth, a transmit chain to transmit a calibration signal through the antenna array to a transponder on at least two different frequency bands within the minimum bandwidth, and a receive chain to receive through the antenna array a transponder signal from the transponder, the transponder signal being received on at least two different frequency bands and being based on the calibration signal. A signal processor determines a frequency dependent calibration vector based on the at least two frequency bands of the transponder signal as received through the receive chain.
摘要翻译：提供了一种确定一组发射或接收链在宽频带上的组延迟而不对系统的同时用户造成显着干扰的方法和装置。在一个实施例中，本发明包括适于与多个其他终端发送和接收无线电通信信号的天线阵列，每个使用特定最小带宽的通信信号，通过天线阵列将校准信号发射到应答器的发射链在最小带宽内的至少两个不同的频带上，以及接收链，用于通过天线阵列接收来自应答器的应答器信号，应答器信号在至少两个不同频带上被接收并且基于校准信号。信号处理器基于通过接收链接收的应答器信号的至少两个频带来确定与频率相关的校准矢量。

10. 发明授权

US06999794B1 Transmission of a common pilot channel from a beamforming transmit antenna array 失效
标题翻译：从波束成形发射天线阵列传输公共导频信道
公开(公告)号：US06999794B1
公开(公告)日：2006-02-14
申请号：US10187064
申请日：2002-06-28
申请人： Erik D. Lindskog , Mitchell D. Trott
发明人： Erik D. Lindskog , Mitchell D. Trott
IPC分类号： H04B1/38
CPC分类号： H04B1/707 , H04B7/0408 , H04B7/0617 , H04B7/0684 , H04B2201/70701
摘要： A method and apparatus are provided that allows beamforming to be used on a user-specific signal together with a sector-wide pilot signal in a communication system, such as a CDMA system. In one embodiment, the invention includes a plurality of elements in a defined order to transmit spatially directed signals to specific receiving radio terminals, and a single element, substantially in the center of the ordering to transmit a single pilot signal simultaneously to a plurality of receiving radio terminals.
摘要翻译：提供了一种方法和装置，其允许在诸如CDMA系统的通信系统中将波束成形与扇区导频信号一起用于用户特定信号。在一个实施例中，本发明以定义的顺序包括多个元件，以将空间定向的信号传送到特定的接收无线电终端，以及单个元件，基本上位于将单个导频信号同时发送到多个接收的顺序的中心无线电终端。

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