-
公开(公告)号：US09121943B2
公开(公告)日：2015-09-01
申请号：US13461284
申请日：2012-05-01
CPC分类号： G01S13/89 , G01S13/003 , G01S13/06 , G01S13/42 , G01S13/885 , G01S13/887 , G01S13/888 , H01Q3/24 , H01Q3/26 , H01Q3/2605 , H01Q3/34
摘要： The present disclosure relates to a beam forming device, comprising a transmit unit comprising at least two transmit elements that transmit radiation towards a scene, a receiver unit comprising at least two receive elements that receive radiation from said scene and that generate receive signals from said received radiation, and a beam forming unit that performs beam forming to obtain beam formed output signals from said receive signals by use of beam forming weights, wherein said beam forming weights are adapted to a distance between the scene and one or more transmit elements and/or receive elements, said distance being indicated by a distance indicator, and wherein said beam forming weights are changed if said distance changes.
摘要翻译： 本公开涉及一种波束形成装置，包括：发射单元，包括至少两个向场景发射辐射的发射元件;接收器单元，包括接收来自所述场景的辐射的至少两个接收元件，并且从所述接收到的信号产生接收信号 辐射和波束形成单元，其执行波束成形以通过使用波束形成权重从所述接收信号获得波束形成的输出信号，其中所述波束形成权重适于场景与一个或多个发射元件之间的距离和/或 接收元件，所述距离由距离指示器指示，并且其中所述波束形成权重如果所述距离改变则改变。
-
公开(公告)号：US08582417B2
公开(公告)日：2013-11-12
申请号：US13084302
申请日：2011-04-11
CPC分类号： H04L27/2613 , H04B7/0669 , H04L1/0618 , H04L1/0625 , H04L1/0668 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L27/2601 , H04L27/2626
摘要： A transmitting device for transmitting data and pilot symbols in an OFDM transmission system having transmission antennas. The device includes symbol generating means for generating data and pilot symbols, means for transmitting the data and pilot symbols using subcarriers of the OFDM system. The symbol generating means generates a first and second type pilot symbol, the second having an inverted value of the first so that a first pilot symbol pattern to be transmitted by using one of said plurality of transmission antennas has a different pattern in the frequency and time dimension from a second pilot symbol pattern to be transmitted by using another transmission antenna. First and second pilot symbols are comprised in respective first and second pilot symbol patterns, where at least some of the first and second pilot symbols have the same time allocation and being alternately identical and inverted to each other.
摘要翻译： 一种发送装置，用于在具有发送天线的OFDM传输系统中发送数据和导频符号。 该装置包括用于产生数据和导频符号的符号产生装置，用于使用OFDM系统的子载波发送数据和导频符号的装置。 符号产生装置产生第一和第二类型导频符号，第二类型具有第一类型的导频符号，其中第二导频符号具有第一类型的反相值，使得通过使用所述多个发射天线之一发射的第一导频符号模式在频率和时间上具有不同的模式 从第二导频符号图案的尺寸，通过使用另一发送天线发送。 第一和第二导频符号包括在相应的第一和第二导频符号模式中，其中第一和第二导频符号中的至少一些具有相同的时间分配并且彼此交替地相同并且相反。
-
公开(公告)号：US08483039B2
公开(公告)日：2013-07-09
申请号：US13084293
申请日：2011-04-11
CPC分类号： H04L27/2613 , H04B7/0669 , H04L1/0618 , H04L1/0625 , H04L1/0668 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L27/2601 , H04L27/2626
摘要： A transmitting device for transmitting data and pilot symbols in an OFDM transmission system having transmission antennas. The device includes symbol generating means for generating data said pilot symbols, means for transmitting the data and pilot symbols using subcarriers of the OFDM system. The symbol generating means generates a first and second type pilot symbol, the second having an inverted value of the first so that a first pilot symbol pattern to be transmitted by using one of said plurality of transmission antennas has a different pattern in the frequency and time dimension from a second pilot symbol pattern to be transmitted by using another transmission antenna. First and second pilot symbols are comprised in respective first and second pilot symbol patterns, where at least some of the first and second pilot symbols have the same time allocation and being alternately identical and inverted to each other.
摘要翻译： 一种发送装置，用于在具有发送天线的OFDM传输系统中发送数据和导频符号。 该装置包括用于产生数据所述导频符号的符号产生装置，用于使用OFDM系统的子载波发送数据和导频符号的装置。 符号产生装置产生第一和第二类型导频符号，第二类型具有第一类型的导频符号，其中第二导频符号具有第一类型的反相值，使得通过使用所述多个发射天线之一发射的第一导频符号模式在频率和时间上具有不同的模式 从第二导频符号图案的尺寸，通过使用另一发送天线发送。 第一和第二导频符号被包括在相应的第一和第二导频符号模式中，其中第一和第二导频符号中的至少一些具有相同的时间分配并且彼此交替地相同并且相互反转。
-
公开(公告)号：US08442443B2
公开(公告)日：2013-05-14
申请号：US12652184
申请日：2010-01-05
IPC分类号： H04B1/00
CPC分类号： H04B7/0695 , H04B7/088
摘要： The present invention relates to a method which analysis the characteristics of the received signal and selects the best beam arrangement for a transmitter/receiver pair for a given situation in a communication system. In particular, the channel delay profile provides characteristics which help to determine and evaluate the quality of a signal link. The result of this evaluation is used for selecting the best beam arrangement.
摘要翻译： 本发明涉及一种分析接收信号的特性并为通信系统中的给定情况选择用于发射机/接收机对的最佳波束布置的方法。 特别地，信道延迟分布提供了有助于确定和评估信号链路的质量的特征。 该评估的结果用于选择最佳的光束布置。
-
公开(公告)号：US08155248B2
公开(公告)日：2012-04-10
申请号：US12375844
申请日：2007-07-03
IPC分类号： H04L27/06
CPC分类号： H04L25/03331 , H04L25/0204 , H04L25/03191 , H04L25/03292 , H04L25/03305 , H04L25/03318 , H04L27/2647 , H04L2025/03426
摘要： An equalizing structure and method for a wireless communication system receiving device, in which two or more transmit signals transmitted in parallel from one or more transmitters are received in received signal vectors representing two or more received data streams, the signals including information modulated onto carrier signals according to a modulation scheme, all possible transmit signals being represented by candidate constellation values in the signal constellation of the modulation scheme. A processor calculates an estimate for a constellation value of a received signal and determines a number of candidate constellation values in the vicinity of the estimated constellation value in the signal constellation. A metric value calculator calculates metric values based on the received signal vectors and the product of channel estimation values with candidate signal vectors, each candidate signal vector including a candidate constellation value for each of the two or more transmit signals, wherein the metric values are calculated for each constellation value of the number of candidate constellation values and the estimated constellation value. A maximum likelihood detector detects one of the candidate signal vectors having a minimum Euclidean distance to a respective receive signal vector as a most likely transmit signal vector based on the metric values.
摘要翻译： 一种用于无线通信系统接收设备的均衡结构和方法，其中从表示两个或多个接收的数据流的接收信号向量中接收从一个或多个发射机并行发送的两个或多个发射信号，所述信号包括调制到载波信号上的信息 根据调制方案，所有可能的发射信号由调制方案的信号星座中的候选星座值表示。 处理器计算接收信号的星座值的估计，并且确定信号星座图中估计星座值附近的候选星座值的数量。 度量值计算器基于接收的信号向量和信道估计值与候选信号向量的乘积来计算度量值，每个候选信号向量包括用于两个或更多个发射信号中的每一个的候选星座值，其中度量值被计算 对于候选星座值的数量和估计的星座值的每个星座值。 最大似然检测器基于度量值检测具有到相应接收信号向量的最小欧几里德距离的候选信号向量中的一个作为最可能的发射信号向量。
-
公开(公告)号：US07885175B2
公开(公告)日：2011-02-08
申请号：US12250295
申请日：2008-10-13
CPC分类号： H04L27/2613 , H04B7/0669 , H04L1/0618 , H04L1/0625 , H04L1/0668 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0226 , H04L27/2601 , H04L27/2626
摘要： The present invention relates to a transmitting device and a receiving device in a wireless orthogonal frequency division multiplex (OFDM) communication system with space time transmit diversity (STTD). Further, the present invention relates to a channel estimation method for performing a channel estimation in such a wireless communication system, in which the transmitting device comprises a first and a second antenna for transmitting signals with space time transmit diversity. The first and the second antenna means are arranged spaced apart from each other in a space diversity arrangement, whereby first and second pilot symbols are transmitted via said first and said second antenna means, respectively. Some of the second pilot symbols are orthogonal to corresponding ones of the first pilot symbols, so that a channel estimation to separately determine the transmission quality of signals transmitted from the first and the second antenna means, respectively, can be performed in a receiving device which receives the signals with only one single antenna.
摘要翻译： 本发明涉及具有时空发射分集（STTD）的无线正交频分复用（OFDM）通信系统中的发送装置和接收装置。 此外，本发明涉及一种用于在这种无线通信系统中执行信道估计的信道估计方法，其中发送设备包括用于发送具有空时传输分集的信号的第一和第二天线。 第一和第二天线装置在空间分集装置中彼此间隔开排列，从而分别经由所述第一和第二天线装置传送第一和第二导频符号。 第二导频符号中的一些与第一导频符号中的相应导频符号正交，从而可以在接收装置中执行分别确定从第一和第二天线装置发送的信号的传输质量的信道估计， 只用一个天线接收信号。
-
37.发明申请公开(公告)号：US20100266082A1
公开(公告)日：2010-10-21
申请号：US12730357
申请日：2010-03-24
IPC分类号： H04L7/00
CPC分类号： H04L7/042 , H04L25/03159 , H04L27/2663 , H04L27/2672 , H04L27/2678
摘要： The present invention relates to a receiving apparatus 1 for receiving signals in a communication system, in which the signals are transmitted on the basis of frames, each frame comprising a data part comprising data blocks, wherein the data blocks are respectively separated by a guard sequence, said receiving apparatus 1 comprising correlation means 14 adapted to perform a correlation on the guard sequences of a received signal, clock drift estimation means 15 adapted to perform a clock drift estimation in the frequency domain on the basis of the correlation results from the correlation means 14, and clock drift compensation means 16 adapted to compensate the clock drift of the received signal on the basis of the clock drift estimation. The present invention further relates to a corresponding receiving method.
摘要翻译： 本发明涉及一种用于在通信系统中接收信号的接收装置1，其中基于帧发送信号，每个帧包括包括数据块的数据部分，其中数据块分别由保护序列分隔开 所述接收装置1包括适于对接收信号的保护序列执行相关性的相关装置14，时钟偏移估计装置15适于根据来自相关装置的相关结果在频域中执行时钟漂移估计 14以及时钟漂移补偿装置16，其适于基于时钟漂移估计来补偿接收信号的时钟漂移。 本发明还涉及相应的接收方法。
-
公开(公告)号：US20090310719A1
公开(公告)日：2009-12-17
申请号：US12376125
申请日：2007-05-23
IPC分类号： H03D1/00
CPC分类号： H04L25/067 , H04L25/03159 , H04L2025/03414
摘要： An equalizing structure and method for a wireless communication system receiving device, in which two or more transmit signals transmitted in parallel from one or more transmitters are received in received signal vectors representing two or more received data streams, the signals including information modulated onto carrier signals according to a modulation scheme, all possible transmit signals being represented by candidate constellation values in the signal constellation of the modulation scheme. A metric value calculator calculates metric values based on the received signal vectors and the product of channel estimation values with candidate signal vectors using absolute value calculations, each candidate signal vector including a candidate constellation value for each of the two or more transmit signals. A maximum likelihood detector detects one of the candidate signal vectors having a minimum Euclidean distance to a respective receive signal vector as a most likely transmit signal vector based on metric values.
摘要翻译： 一种用于无线通信系统接收设备的均衡结构和方法，其中从表示两个或多个接收的数据流的接收信号向量中接收从一个或多个发射机并行发送的两个或多个发射信号，所述信号包括调制到载波信号上的信息 根据调制方案，所有可能的发射信号由调制方案的信号星座中的候选星座值表示。 度量值计算器基于所接收的信号向量和使用绝对值计算的具有候选信号向量的乘积乘积来计算度量值，每个候选信号向量包括用于两个或更多个发射信号中的每一个的候选星座值。 最大似然检测器基于度量值检测具有到相应接收信号向量的最小欧几里德距离的候选信号向量中的一个作为最可能的发射信号向量。
-
公开(公告)号：US20080198952A1
公开(公告)日：2008-08-21
申请号：US11912788
申请日：2005-12-19
IPC分类号： H04L27/06
CPC分类号： H04L25/03012 , H04L1/0618 , H04L25/0212 , H04L2025/03414
摘要： The present invention relates to an equalising structure (10) and method for a receiving device of a wireless communication system, in which two or more information signals are transmitted in parallel from one or more transmitters, wherein for the information signals transmit information is modulated onto carrier signals according to a modulation scheme, whereby all possible data symbols are represented as constellation points in the signal constellation of the modulation scheme and whereby the equalizing structure (10) performs, for each information signal, a maximum likelihood detection in order to determine a constellation point with a minimum Euclidean distance to a received signal vector as a most likely received signal vector by searching over the whole set of possible transmit signals, Sm, the equalising structure (10) comprises means (11) for detecting channel estimation information in the information signals and means. (31) for calculating the product of channel matrix, H,n, and transmit signal vector, sm, based on the channel estimation information detected by the detecting means (11), wherein the calculating means (31) calculates the product of channel matrix, Hm, and transmit signal vector, s,n, in at, least two steps, wherein in the first step a partial product of channel matrix, Hm, and transmit signal vector, sm, based on at least one or a part of the channel estimation information detected by the detecting means (11) is calculated. The reference signals used for channel estimation are sent from the different transmitter antennas with time offset from each other.
摘要翻译： 本发明涉及一种用于无线通信系统的接收装置的均衡结构（10）和方法，其中从一个或多个发射机并行发送两个或更多个信息信号，其中对于信息信号，发射信息被调制到 载波信号，其中所有可能的数据符号被表示为调制方案的信号星座图中的星座点，并且由此均衡结构（10）针对每个信息信号执行最大似然检测，以便确定 星座点，通过在整个可能的发射信号集合S上进行搜索，具有与接收信号向量最小的欧几里德距离作为最可能的接收信号向量，均衡结构（10）包括装置（11） ），用于检测信息信号和装置中的信道估计信息。 （31），用于基于由检测装置（11）检测到的信道估计信息来计算信道矩阵H，N n N的乘积和发送信号向量s m ），其中所述计算装置（31）在至少两个步骤中计算信道矩阵H s m和所述发送信号向量s，N n的乘积，其中 在第一步骤中，基于检测到的信道估计信息的至少一个或一部分，信道矩阵H m的一部分乘积和发送信号向量s m m 通过检测装置（11）计算。 用于信道估计的参考信号从不同的发射机天线发送，时间偏移彼此。
-
公开(公告)号：US07012882B2
公开(公告)日：2006-03-14
申请号：US09919040
申请日：2001-07-30
IPC分类号： H04J11/00
CPC分类号： H04L25/0224 , H04L27/2613 , H04L27/2657 , H04L27/2675
摘要： The present invention relates to a device (10) for receiving signals in a wireless orthogonal frequency division multiplex (OFDM) system and to a channel estimation method in such a system. The data symbols and pilot symbols are transmitted in frequency subcarriers and timeslots, whereby pilot symbols are transmitted in a continuous stream within at least one frequency subcarrier. A channel estimation for a data symbol is performed on the basis of received pilot symbols using a filter including a common phase error correction value from the continuous stream pilot symbol in the same timeslot as the data symbol to be channel estimated.The present invention thereby enables a correct and efficient channel estimation including a common phase error correction to be performed.
摘要翻译： 本发明涉及用于在无线正交频分多路复用（OFDM）系统中接收信号的装置（10）和在这种系统中的信道估计方法。 在频率子载波和时隙中发送数据符号和导频符号，由此在至少一个频率副载波内的连续流中发送导频符号。 基于接收到的导频符号，使用包括来自连续流导频符号的公共相位误差校正值的滤波器来执行数据符号的信道估计，该相位误差校正值与要被信道估计的数据符号相同的时隙。 因此，本发明能够进行包括公共相位误差校正的正确和有效的信道估计。
-
-
-
-
-
-
-
-
-
搜索结果
73 条记录 (耗时 0.029 秒)
