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21. 发明申请

US20070086535A1 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：US20070086535A1
公开(公告)日：2007-04-19
申请号：US11608685
申请日：2006-12-08
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H04K1/10 , H04J11/00
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 mean, 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布置，由此分别经由所述第一和第二天线平均值发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。

22. 发明申请

US20060120273A1 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：US20060120273A1
公开(公告)日：2006-06-08
申请号：US11338645
申请日：2006-01-25
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H04J1/00 , H04J11/00
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。

23. 发明授权

US06973143B2 Soft-normalizer for a channel decoder 有权
标题翻译：用于信道解码器的软归一化器
公开(公告)号：US06973143B2
公开(公告)日：2005-12-06
申请号：US09940375
申请日：2001-08-27
申请人： Jens-Uwe Jürgensen , Richard Stirling-Gallacher , Zhaocheng Wang , Taku Nagase
发明人： Jens-Uwe Jürgensen , Richard Stirling-Gallacher , Zhaocheng Wang , Taku Nagase
IPC分类号： H03M13/39 , H03M13/00 , H03M13/45 , H04L1/00 , H04L1/20 , H04L27/22 , H04Q7/38 , H03D1/00 , H04L27/06
CPC分类号： H03M13/6325 , H03M13/45 , H03M13/6337 , H03M13/658 , H03M13/6591 , H04L1/0045
摘要： The invention proposes a device for generating, from incoming signal values (Xi,n), soft-values (Yi,n) to be input into a channel decoder of a communication device for use in a wireless communication system, comprising truncation means (24, 26, 28) for truncating the incoming signal values (Xi,n) such as to fall within a predetermined limit value range, and normalization means (30, 32) for normalizing the truncated signal values (Xti,n) such as to fit to an input range of the decoder. According to the invention, the truncation means (24, 26, 28) are adapted to determine the boundaries of the limit value range in dependence on information representative of a signal-to-noise ratio of the incoming signal values (Xi,n). The truncated signal values (Xti,n), after normalization, then are output as said soft-values (Yi,n).
摘要翻译：本发明提出了一种用于从输入信号值（X i，n n）生成要输入到信道解码器的信道解码器的软值（Y i，n n）的装置，一种用于无线通信系统的通信设备，包括截断装置（24,26,28），用于截断输入信号值（X SUB，n N），以便落入预定极限值范围内以及归一化装置（30,32），用于对截断的信号值（X，T，S，N，N）进行归一化，以适合于解码器的输入范围。根据本发明，截断装置（24,26,28）适于根据表示输入信号值（XII）的信噪比的信息来确定极限值范围的边界，n N）。然后，在归一化之后，截断的信号值（X，S，N，N，N）被输出为所述软值（Y i，n N）。

24. 发明授权

US08503586B2 Receiving apparatus and method with clock drift estimation and compensation 失效
标题翻译：具有时钟漂移估计和补偿的接收装置和方法
公开(公告)号：US08503586B2
公开(公告)日：2013-08-06
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 for receiving signals in a communication system in which the signals are transmitted on the basis of frames. Each frame includes a data part having data blocks, wherein the data blocks are respectively separated by a guard sequence. The receiving apparatus performs a correlation on the guard sequences of a received signal and performs a clock drift estimation in the frequency domain on the basis of the correlation results. The receiving apparatus also compensates the clock drift of the received signal on the basis of the clock drift estimation.
摘要翻译：本发明涉及在基于帧发送信号的通信系统中接收信号的接收装置。每帧包括具有数据块的数据部分，其中数据块分别由保护序列分隔开。接收装置对接收信号的保护序列进行相关，并根据相关结果对频域进行时钟漂移估计。接收装置还基于时钟漂移估计补偿接收信号的时钟漂移。

25. 发明申请

US20110188602A1 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：US20110188602A1
公开(公告)日：2011-08-04
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： 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 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。

26. 发明授权

US07948863B2 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：US07948863B2
公开(公告)日：2011-05-24
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： 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。

27. 发明申请

US20100226453A1 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：US20100226453A1
公开(公告)日：2010-09-09
申请号：US12769958
申请日：2010-04-29
申请人： Zhaocheng WANG , Richard Stirling-Gallacher
发明人： Zhaocheng WANG , Richard Stirling-Gallacher
IPC分类号： 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。

28. 发明授权

US07689242B2 Channel estimator for OFDM system 有权
标题翻译： OFDM系统的信道估计器
公开(公告)号：US07689242B2
公开(公告)日：2010-03-30
申请号：US09897910
申请日：2001-07-03
申请人： Richard Stirling-Gallacher , Zhaocheng Wang , Thomas Dölle
发明人： Richard Stirling-Gallacher , Zhaocheng Wang , Thomas Dölle
IPC分类号： H04M1/00
CPC分类号： H04L25/0202 , H04L27/2647
摘要： The present invention relates to a device for receiving signals in a wireless cellular OFDM system, in which data symbols are transmitted in frequency subcarriers and timeslots. The present invention further relates to a method for channel estimation in such a device. According to the present invention, a channel estimation on the basis of received pilot symbols is performed, whereby the channel estimation for data symbols between pilot symbols is performed by means of a filter, said filter being selected from a set of filters on the basis of an interference reference value.
摘要翻译：本发明涉及一种用于在无线蜂窝OFDM系统中接收信号的装置，其中在频率子载波和时隙中发送数据符号。本发明还涉及这种装置中的信道估计方法。根据本发明，执行基于接收到的导频符号的信道估计，由此通过滤波器执行导频符号之间的数据符号的信道估计，所述滤波器基于干扰参考值。

29. 发明授权

US07660228B2 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：US07660228B2
公开(公告)日：2010-02-09
申请号：US11338645
申请日：2006-01-25
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。

30. 发明申请

US20060120272A1 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：US20060120272A1
公开(公告)日：2006-06-08
申请号：US11338644
申请日：2006-01-25
申请人： Zhaocheng Wang , Richard Stirling-Gallacher
发明人： Zhaocheng Wang , Richard Stirling-Gallacher
IPC分类号： H04J11/00 , H04J1/00
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 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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