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11. 发明授权

US08582417B2 Pilot pattern design for a STTD scheme in an OFDM system 有权
标题翻译： OFDM系统中STTD方案的导频模式设计
公开(公告)号：US08582417B2
公开(公告)日：2013-11-12
申请号：US13084302
申请日：2011-04-11
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H04J11/00 , H04J4/00
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。

12. 发明授权

US08483039B2 Pilot pattern design for a STTD scheme in an OFDM system 有权
标题翻译： OFDM系统中STTD方案的导频模式设计
公开(公告)号：US08483039B2
公开(公告)日：2013-07-09
申请号：US13084293
申请日：2011-04-11
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H04J11/00 , H04J4/00
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。

13. 发明授权

US07885175B2 Pilot pattern design for an OFDM system 有权
标题翻译： OFDM系统的导频模式设计
公开(公告)号：US07885175B2
公开(公告)日：2011-02-08
申请号：US12250295
申请日：2008-10-13
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H04J11/00 , H04J4/00
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。

14. 发明申请

US20100266082A1 RECEIVING APPARATUS AND METHOD WITH CLOCK DRIFT ESTIMATION AND COMPENSATION 失效
标题翻译：收到装置和方法与时间变化估计和补偿
公开(公告)号：US20100266082A1
公开(公告)日：2010-10-21
申请号：US12730357
申请日：2010-03-24
申请人： Zhaocheng WANG , Qi Wang , Richard Stirling-Gallacher , Ralf Boehnke
发明人： Zhaocheng WANG , Qi Wang , Richard Stirling-Gallacher , Ralf Boehnke
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。

15. 发明授权

US07012882B2 Channel estimator for OFDM system 失效
标题翻译： OFDM系统的信道估计器
公开(公告)号：US07012882B2
公开(公告)日：2006-03-14
申请号：US09919040
申请日：2001-07-30
申请人： Zhaocheng Wang , Richard Stirling-Gallacher , Thomas Dölle
发明人： Zhaocheng Wang , Richard Stirling-Gallacher , Thomas Dölle
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。

16. 发明授权

US08345532B2 Transmitting device and method for transmitting signals in a wireless communication system, receiving device and method for receiving signals in a wireless communication system 有权
标题翻译：用于在无线通信系统中发送信号的发送装置和方法，用于在无线通信系统中接收信号的接收装置和方法
公开(公告)号：US08345532B2
公开(公告)日：2013-01-01
申请号：US12041181
申请日：2008-03-03
申请人： Richard Stirling-Gallacher , Zhaocheng Wang
发明人： Richard Stirling-Gallacher , Zhaocheng Wang
IPC分类号： H04J11/00
CPC分类号： H04B1/0475 , H04B7/0617 , H04B7/0669 , H04B7/0671 , H04B7/068 , H04B7/0695 , H04B7/0697 , H04B7/086
摘要： A transmitting device for transmitting signals in a wireless communication system, includes at least two beam antennas, each beam antenna having a main beaming direction at a different angle and generating means for generating a number of signal streams to be transmitted within the wireless communication system, whereby the signal to be transmitted is split into these different streams and said number of signal streams corresponds to the number of beam antennas, whereby each signal stream is transmitted via a different beam antenna. Transmitting device for transmitting signals in a wireless communication system, comprising at least two beam antennas, each beam antenna having a main beaming direction at a different angle and generating means for generating a number of signal streams to be transmitted within the wireless communication system, whereby each of these signal streams comprises a different version of the data, and said number of signal streams corresponds to the number of beam antennas, whereby each signal stream is transmitted via a different beam antenna.
摘要翻译：一种用于在无线通信系统中发送信号的发送装置，包括至少两个波束天线，每个波束天线具有不同角度的主发射方向，以及生成装置，用于生成将在无线通信系统内发送的多个信号流，由此将待传输的信号分成这些不同的流，并且所述信号流的数量对应于波束天线的数量，由此每个信号流经由不同的波束天线发射。用于在无线通信系统中传输信号的发射装置，包括至少两个波束天线，每个波束天线具有不同角度的主发射方向，以及产生装置，用于产生将在无线通信系统内传输的多个信号流，由此这些信号流中的每一个包括数据的不同版本，并且信号流的数量对应于波束天线的数量，由此每个信号流经由不同的波束天线发射。

17. 发明授权

US08295340B2 Minimum mean square error equaliser with reduced complexity 失效
标题翻译：最小均方误差均衡器，复杂度降低
公开(公告)号：US08295340B2
公开(公告)日：2012-10-23
申请号：US12327205
申请日：2008-12-03
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H03H7/30
CPC分类号： H04L25/03159 , H04L2025/03414 , H04L2025/03426 , H04L2025/03522 , H04L2025/03535 , H04L2025/03726
摘要： The present invention relates to the field of communication devices, e.g. wireless communication devices. More particularly, the present invention relates to the field of signal equalization, especially minimum mean square error equalization. The present invention especially relates to an equalizer for a communication device, a method of equalizing one or more received signals and a software program product for carrying out the method. The present invention reduces the size of a look-up table needed for a division operation and, generally, provides for a reduced complexity of the equalizer and receiver. The equalizer for a communication device comprises a filter calculator for determining a channel power value based on one or more channel response values and selecting one of two or more equalizer structures based on said channel power value and based on at least one threshold value for separating the channel power values into at least two ranges; and a filter for equalizing one or more received signals according to the selected equalizer structure. Advantageously, at least one of said equalizer structures corresponds to an, at least approximated, minimum mean square error equalizer structure or to an, at least approximated, suboptimal minimum mean square error equalizer structure.
摘要翻译：本发明涉及通信设备的领域，例如，无线通信设备。更具体地说，本发明涉及信号均衡领域，特别是最小均方误差均衡。本发明特别涉及一种用于通信设备的均衡器，一种均衡一个或多个接收信号的方法和用于执行该方法的软件程序产品。本发明减小了划分操作所需的查找表的大小，并且通常提供了均衡器和接收机的复杂度降低。用于通信设备的均衡器包括滤波器计算器，用于基于一个或多个信道响应值来确定信道功率值，并且基于所述信道功率值选择两个或多个均衡器结构中的一个，并且基于至少一个阈值来分离通道功率值至少两个范围; 以及用于根据所选择的均衡器结构对一个或多个接收信号进行均衡的滤波器。有利地，所述均衡器结构中的至少一个对应于至少近似的最小均方误差均衡器结构或至少近似的次优最小均方误差均衡器结构。

18. 发明申请

US20090257487A1 VIDEO ROBUSTNESS USING SPATIAL AND TEMPORAL DIVERSITY 审中-公开
标题翻译：使用空间和时间多样性的视频运动
公开(公告)号：US20090257487A1
公开(公告)日：2009-10-15
申请号：US12366142
申请日：2009-02-05
申请人： Zhaocheng WANG , Fritz Hohl , Richard Stirling-Gallacher , Qi Wang
发明人： Zhaocheng WANG , Fritz Hohl , Richard Stirling-Gallacher , Qi Wang
IPC分类号： H04N11/02
CPC分类号： H04N19/186 , H04B7/0617 , H04B7/0695 , H04B7/086 , H04B7/088 , H04N19/37
摘要： The present invention relates to the fields of wireless communication, video transmission, unequal error protection, time diversity, space diversity. The present invention especially relates to a transmitter, a receiver, a method of transmitting video data and a method for receiving video data. The transmitter for transmitting video data comprises: A transmission section, said transmission section comprising a parser for dividing said video data into at least two classes and dividing each class into one or more blocks. Hereby, with each class there is associated a different number. Said transmission section is adapted to transmit at least one block of each class once on each communication channel of a set communication channels, the number of communication channels comprised in the respective set being given by the number associated with the respective class. Further, different communication channels correspond to different transmission times and/or different transmit paths. The receiver for receiving video data comprises: A receiving section for receiving said video data on a plurality of communication channels and generating a plurality of partial signals, each partial signal corresponding to a different communication channel. Different communication channels correspond to different transmission times and/or different receive paths. A decoding and validating section comprising a decoder for decoding a first block of said video data based on a partial signal of a first number of at least two partial signals and an error detector for determining if said decoded first block of video data is corrupted. In case said decoded first block of video data is determined to be corrupted, said decoder is configured to decode said first block of video data based on an other signal of said first number of partial signals.
摘要翻译：本发明涉及无线通信，视频传输，不等错误保护，时间分集，空间分集等领域。本发明特别涉及一种发射机，接收机，一种传输视频数据的方法和一种接收视频数据的方法。用于发送视频数据的发送器包括：发送部分，所述发送部分包括解析器，用于将所述视频数据分成至少两个类别，并将每个类别划分成一个或多个块。因此，每个类都有不同的数字。所述传输部分适于在设置的通信信道的每个通信信道上发送每个类别的至少一个块一次，包括在相应集合中的通信信道的数量由与相应类别相关联的数量给出。此外，不同的通信信道对应于不同的发送时间和/或不同的发送路径。用于接收视频数据的接收机包括：接收部分，用于在多个通信信道上接收所述视频数据并产生多个部分信号，每个部分信号对应于不同的通信信道。不同的通信信道对应于不同的传输时间和/或不同的接收路径。一种解码和验证部分，包括：解码器，用于基于第一数量的至少两个部分信号的部分信号来解码所述视频数据的第一块;以及错误检测器，用于确定所述解码的第一视频数据块是否被破坏。在所述解码的第一视频数据块被确定为被破坏的情况下，所述解码器被配置为基于所述第一数量的部分信号的其他信号来解码所述第一视频数据块。

19. 发明申请

US20090080561A1 PILOT PATTERN DESIGN FOR A STTD SCHEME IN AN OFDM SYSTEM 有权
标题翻译：用于OFDM系统中的STTD方案的引导模式设计
公开(公告)号：US20090080561A1
公开(公告)日：2009-03-26
申请号：US12251177
申请日：2008-10-14
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H04B7/02 , H04L27/00
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。

20. 发明申请

US20090041142A1 PILOT PATTERN DESIGN FOR AN OFDM SYSTEM 有权
标题翻译：用于OFDM系统的PILOT模式设计
公开(公告)号：US20090041142A1
公开(公告)日：2009-02-12
申请号：US12250306
申请日：2008-10-13
申请人： ZHAOCHENG WANG , Richard Stirling-Gallacher
发明人： ZHAOCHENG WANG , Richard Stirling-Gallacher
IPC分类号： H04J11/00 , H04L27/28
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 symbols and pilot symbols in an OFDM transmission system; the device comprising symbol generating means for generating said data symbols and said pilot symbols, means for transmitting said data symbols and pilot symbols respectively by using a plurality of subcarriers of said OFDM transmission system, wherein said symbol generating means is designed to selectively generate a first type pilot symbol and a second type pilot symbol being orthogonal to said first type pilot symbol so that a pilot symbol pattern in the frequency dimension comprises at least said first type pilot symbol to be transmitted by using a predefined subcarrier and second type pilot symbol to be transmitted by using other predefined subcarrier, and wherein said pilot symbol pattern has a different pattern from a succeeding pilot symbol pattern in time dimension.
摘要翻译：一种发送装置，用于在OFDM传输系统中发送数据符号和导频符号; 所述装置包括用于产生所述数据符号和所述导频符号的符号产生装置，用于分别通过使用所述OFDM传输系统的多个子载波来发送所述数据符号和导频符号的装置，其中所述符号产生装置被设计成选择性地产生第一类型导频符号和与所述第一类型导频符号正交的第二类型导频符号，使得频率维度中的导频符号模式至少包括要通过使用预定义子载波和第二类型导频符号来发送的所述第一类型导频符号通过使用其它预定义的子载波来发送，并且其中所述导频符号模式具有与时间维度中的后续导频符号模式不同的模式。

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