-
公开(公告)号：US09025575B2
公开(公告)日：2015-05-05
申请号：US13677781
申请日：2012-11-15
CPC分类号： H04W72/082 , H04B7/06 , H04B17/12 , H04L25/03949 , H04W72/044 , H04W72/0446 , H04W88/08
摘要： An antenna array of a base station is calibrated using outbound traffic signals. The antenna array includes a number of sub-arrays. A combiner in the antenna array combines the outbound traffic signals in the sub-arrays into a feedback signal. The outbound traffic signals are captured simultaneously for use as reference signals before the outbound traffic signals enter transmit paths in a radio unit of the base station. Each of the reference signals is one of the outbound traffic signals that is to be transmitted via one of the sub-arrays. An impairment estimator of the base station estimates the impairment for each of the outbound traffic signals based on the feedback signal and the reference signals. An approximate inverse of the impairment estimation is applied to the outbound traffic signals by a number of equalizers before the outbound traffic signals enter the transmit paths.
摘要翻译： 使用出站交通信号对基站的天线阵列进行校准。 天线阵列包括多个子阵列。 天线阵列中的组合器将子阵列中的出站业务信号组合成反馈信号。 在出站业务信号在基站的无线电单元中进入发送路径之前，同时捕获出站业务信号用作参考信号。 每个参考信号是要经由子阵列中的一个发送的出站业务信号之一。 基站的减值估计器基于反馈信号和参考信号来估计每个出站交通信号的损害。 在出站交通信号进入发送路径之前，通过多个均衡器将损害估计的近似逆向应用于出站交通信号。
-
公开(公告)号：US20140133470A1
公开(公告)日：2014-05-15
申请号：US13677781
申请日：2012-11-15
CPC分类号： H04W72/082 , H04B7/06 , H04B17/12 , H04L25/03949 , H04W72/044 , H04W72/0446 , H04W88/08
摘要： An antenna array of a base station is calibrated using outbound traffic signals. The antenna array includes a number of sub-arrays. A combiner in the antenna array combines the outbound traffic signals in the sub-arrays into a feedback signal. The outbound traffic signals are captured simultaneously for use as reference signals before the outbound traffic signals enter transmit paths in a radio unit of the base station. Each of the reference signals is one of the outbound traffic signals that is to be transmitted via one of the sub-arrays. An impairment estimator of the base station estimates the impairment for each of the outbound traffic signals based on the feedback signal and the reference signals. An approximate inverse of the impairment estimation is applied to the outbound traffic signals by a number of equalizers before the outbound traffic signals enter the transmit paths.
摘要翻译： 使用出站交通信号对基站的天线阵列进行校准。 天线阵列包括多个子阵列。 天线阵列中的组合器将子阵列中的出站业务信号组合成反馈信号。 在出站业务信号在基站的无线电单元中进入发送路径之前，同时捕获出站业务信号用作参考信号。 每个参考信号是要经由子阵列中的一个发送的出站业务信号之一。 基站的减值估计器基于反馈信号和参考信号来估计每个出站交通信号的损害。 在出站交通信号进入发送路径之前，通过多个均衡器将损害估计的近似逆向应用于出站交通信号。
-
公开(公告)号：US08548085B2
公开(公告)日：2013-10-01
申请号：US13162748
申请日：2011-06-17
CPC分类号： H04L27/2624
摘要： Peak power reduction in transmit chains of frequency hopping, multi-band radiocommunication devices is performed. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path. Alternatively, a sufficiently high sample rate can be used in support of error signal generation.
摘要翻译： 跳频发射链中的峰值功率降低，多频带无线电通信设备被执行。 只能在误差信号路径中或在误差信号路径和主信号路径两者中进行正在处理的用于峰值功率降低的信号的滤波和可选的内插。 或者，可以使用足够高的采样率来支持误差信号产生。
-
公开(公告)号：US08817900B2
公开(公告)日：2014-08-26
申请号：US13443398
申请日：2012-04-10
IPC分类号： H04L27/28
CPC分类号： H04L27/2614
摘要： A system and method are provided for frequency domain peak power reduction on a plurality of orthogonal frequency divisional multiplexing (OFDM) signals in a communications system, wherein frequency domain processing of at least one OFDM signal carrier is iteratively performed to reduce peak power transmissions. OFDM signal carriers can include both in-band sub-carrier signals, and guard-band sub-carrier signals. Each iteration of peak power reduction takes as an input the frequency domain representation of the signal from the previous iteration that has been altered with respect to an error signal also represented in the frequency domain, determines an error signal (in the frequency domain), and subtracts this from the input to produce a further peak power reduced frequency domain signal. If there are no peaks above the configured peak power reduction threshold, then the signal passes through the FPPR iterations with no change.
摘要翻译： 提供了一种在通信系统中的多个正交频分复用（OFDM）信号上进行频域峰值功率降低的系统和方法，其中迭代地执行至少一个OFDM信号载波的频域处理以减少峰值功率传输。 OFDM信号载波可以包括带内子载波信号和保护带子载波信号。 峰值功率降低的每次迭代将来自先前迭代的信号的频域表示作为输入，其相对于也在频域中表示的误差信号已被改变，确定误差信号（在频域中），以及 从输入中减去此值，以产生另一个峰值功率降低的频域信号。 如果在配置的峰值功率降低阈值以上没有峰值，则信号通过FPPR迭代而没有变化。
-
公开(公告)号：US08767851B2
公开(公告)日：2014-07-01
申请号：US13478526
申请日：2012-05-23
IPC分类号： H04K1/10
CPC分类号： H04L27/2655 , H04L27/2614
摘要： Disclosed is a system and method for peak power reduction on a plurality of frequency domain orthogonal frequency divisional multiplexing (OFDM) signal carriers and a plurality of time domain signal carriers in a communications system. The system includes a plurality of frequency domain carrier processing blocks configured to iteratively perform frequency domain processing of at least one frequency domain OFDM signal carrier to reduce peak power transmission and a plurality of time domain carrier processing blocks configured to iteratively perform time domain processing of at least one time domain signal carrier to reduce peak power transmission, wherein the system is further configured to perform the frequency domain processing and time domain processing substantially simultaneously, thereby spreading excess peak power to one or more of the plurality of frequency domain OFDM signal carriers and to one or more of the plurality of time domain signal carriers.
摘要翻译： 公开了一种在通信系统中的多个频域正交频分复用（OFDM）信号载波和多个时域信号载波上的峰值功率降低的系统和方法。 该系统包括多个频域载波处理块，被配置为迭代地执行至少一个频域OFDM信号载波的频域处理以减少峰值功率传输，并且多个时域载波处理块被配置为迭代地执行时域处理 至少一个时域信号载波以减少峰值功率传输，其中所述系统还被配置为基本上同时地执行频域处理和时域处理，从而将多个峰值功率扩展到所述多个频域OFDM信号载波中的一个或多个， 涉及多个时域信号载体中的一个或多个。
-
公开(公告)号：US20120064848A1
公开(公告)日：2012-03-15
申请号：US13125625
申请日：2010-09-15
CPC分类号： H04L27/2623
摘要： Peak power reduction in transmit chains of radiocommunication devices is performed using a low sample rate. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path.
摘要翻译： 无线电通信设备的发射链中的峰值功率降低使用低采样率来执行。 只能在误差信号路径中或在误差信号路径和主信号路径两者中进行正在处理的用于峰值功率降低的信号的滤波和可选的内插。
-
公开(公告)号：US08478325B2
公开(公告)日：2013-07-02
申请号：US13125625
申请日：2010-09-15
IPC分类号： H04B7/00
CPC分类号： H04L27/2623
摘要： Peak power reduction in transmit chains of radiocommunication devices is performed using a low sample rate. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path.
摘要翻译： 无线电通信设备的发射链中的峰值功率降低使用低采样率进行。 只能在误差信号路径中或在误差信号路径和主信号路径两者中进行正在处理的用于峰值功率降低的信号的滤波和可选的内插。
-
公开(公告)号：US09426827B2
公开(公告)日：2016-08-23
申请号：US14158993
申请日：2014-01-20
CPC分类号： H04W74/0833 , H04L27/265 , H04L27/2655
摘要： Methods and devices for extracting a RACH preamble using as input a number of Fast Fourier Transformed symbols, in order to extract a random access channel (RACH) preamble from a signal received in a base station from a user device, in a radio communication system, are provided. An initial cyclic prefix (symbol CP) is removed prior to performing FFT on symbols. After (1) selecting from the FFT of a symbol frequencies corresponding to the RACH band all other non-RACH frequency bins having been set to zero, (2) shifting the signal to baseband and (3) performing a FFT on the baseband signal, a phase adjustment is performed to compensate for group delays due to symbol CP gaps occurring when generating the baseband signal, the phase adjustment being determined individually for each symbol.
摘要翻译： 用于提取RACH前同步码的方法和装置，以便使用多个快速傅立叶变换符号来输入，以便在无线电通信系统中从用户装置在基站接收的信号中提取随机接入信道（RACH）前导码， 被提供。 在对符号执行FFT之前，删除初始循环前缀（符号CP）。 在（1）从FFT中选择与RACH频带对应的符号频率，所有其他非RACH频率仓已被设置为零，（2）将信号移位到基带，和（3）对基带信号执行FFT， 执行相位调整以补偿由于在生成基带信号时发生的符号CP间隙引起的组延迟，对于每个符号单独确定相位调整。
-
公开(公告)号：US20130315320A1
公开(公告)日：2013-11-28
申请号：US13478526
申请日：2012-05-23
IPC分类号： H04L27/28
CPC分类号： H04L27/2655 , H04L27/2614
摘要： Disclosed is a system and method for peak power reduction on a plurality of frequency domain orthogonal frequency divisional multiplexing (OFDM) signal carriers and a plurality of time domain signal carriers in a communications system. The system includes a plurality of frequency domain carrier processing blocks configured to iteratively perform frequency domain processing of at least one frequency domain OFDM signal carrier to reduce peak power transmission and a plurality of time domain carrier processing blocks configured to iteratively perform time domain processing of at least one time domain signal carrier to reduce peak power transmission, wherein the system is further configured to perform the frequency domain processing and time domain processing substantially simultaneously, thereby spreading excess peak power to one or more of the plurality of frequency domain OFDM signal carriers and to one or more of the plurality of time domain signal carriers.
摘要翻译： 公开了一种在通信系统中的多个频域正交频分复用（OFDM）信号载波和多个时域信号载波上的峰值功率降低的系统和方法。 该系统包括多个频域载波处理块，被配置为迭代地执行至少一个频域OFDM信号载波的频域处理以减少峰值功率传输，并且多个时域载波处理块被配置为迭代地执行时域处理 至少一个时域信号载波以减少峰值功率传输，其中所述系统还被配置为基本上同时地执行频域处理和时域处理，从而将多个峰值功率扩展到所述多个频域OFDM信号载波中的一个或多个， 涉及多个时域信号载体中的一个或多个。
-
10.发明授权Methods, testing apparatuses and devices for removing cross coupling effects in antenna arrays 有权用于去除天线阵列中的交叉耦合效应的方法，测试装置和装置公开(公告)号：US08913513B2
公开(公告)日：2014-12-16
申请号：US13126411
申请日：2010-09-24
申请人： Neil McGowan , Peter Deane
发明人： Neil McGowan , Peter Deane
CPC分类号： H01Q1/523 , H01Q3/2617
摘要： Methods and devices for removing cross coupling effects between elements of an antenna array (110) are provided. Cross coupling coefficients between all pairs of antenna elements of the antenna array are predetermined to minimize a total power in theoretical null points calculated without considering the cross element effects. A transceiver (100) includes a multiplexing block (105) configured to receive data signals to be transmitted via the antenna elements and to output to at least one of the antenna elements, a sum signal including (i) a data signal, which data signal is designated for the at least one antenna element, and (ii) a linear combination of data signals designated for other antenna elements of the antenna array, each of the data signals in the linear combination being weighted by a respective cross coupling coefficient between the at least one antenna element and an antenna element emitting the each of the data signals.
摘要翻译： 提供了用于去除天线阵列（110）的元件之间的交叉耦合效应的方法和装置。 预先确定天线阵列的所有天线元件对之间的交叉耦合系数以最小化在不考虑交叉元素效应的情况下计算的理论空点的总功率。 收发器（100）包括多路复用块（105），被配置为接收要通过天线元件传输的数据信号并将至少一个天线元件输出到和信号，该和信号包括（i）数据信号，哪个数据信号 被指定用于至少一个天线元件，以及（ii）被指定用于天线阵列的其他天线元件的数据信号的线性组合，线性组合中的每个数据信号由相应的交叉耦合系数 至少一个天线元件和发射每个数据信号的天线元件。
-
-
-
-
-
-
-
-
-
搜索结果
51 条记录 (耗时 0.028 秒)
