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1. 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。

2. 发明授权

US08401125B2 Receiving apparatus and method with no oversampling analog to digital conversion 失效
标题翻译：没有过采样模数转换的接收装置和方法
公开(公告)号：US08401125B2
公开(公告)日：2013-03-19
申请号：US12631070
申请日：2009-12-04
申请人： Zhaocheng Wang , Richard Stirling-Gallacher , Ralf Boehnke
发明人： Zhaocheng Wang , Richard Stirling-Gallacher , Ralf Boehnke
IPC分类号： H04L27/06 , H04L7/00
CPC分类号： H04L7/042
摘要： A receiving apparatus and a receiving method for receiving signals in a wireless communication system are presented, the signals including a dedicated channel estimation sequence. The apparatus includes an analog to digital converter that converts received signals into digital samples with a sampling rate identical to a symbol rate of the received signals, a channel estimation unit that performs a channel estimation based on the dedicated channel estimation sequence comprised in a digital samples of the received signals, an evaluation unit that evaluates the channel estimation result from the channel estimation unit, and a control unit that controls a phase of the sampling rate of the analog to digital converter based on an evaluation of the channel estimation result. The present invention further relates to a corresponding receiving method.
摘要翻译：提出了一种用于在无线通信系统中接收信号的接收装置和接收方法，所述信号包括专用信道估计序列。该装置包括模拟数字转换器，其以接收信号的符号率将接收到的信号转换为数字样本，信道估计单元，其基于包含在数字样本中的专用信道估计序列执行信道估计的评估单元，评估单元，其评估来自信道估计单元的信道估计结果;以及控制单元，其基于信道估计结果的评估来控制模数转换器的采样率的相位。本发明还涉及相应的接收方法。

3. 发明授权

US08447002B2 Receiving apparatus with frequency domain equalizer 有权
标题翻译：具有频域均衡器的接收装置
公开(公告)号：US08447002B2
公开(公告)日：2013-05-21
申请号：US12619847
申请日：2009-11-17
申请人： Richard Stirling-Gallacher , Ralf Boehnke , Zhaocheng Wang
发明人： Richard Stirling-Gallacher , Ralf Boehnke , Zhaocheng Wang
IPC分类号： H04B1/10
CPC分类号： H04L25/03159 , H04L25/0212 , H04L25/0224
摘要： The present invention relates to a receiving apparatus (1) for receiving signals in a wireless communication system, in which the signals comprise a dedicated channel estimation sequence, comprising a channel estimation means (6) adapted to perform a channel estimation on a dedicated channel estimation sequence comprised in a received signal, a noise reduction means (8) adapted to reduce noise in the channel estimation result obtained from the channel estimation means by setting complex samples of the channel estimation result which are below a noise threshold to zero, and a frequency domain equalizing means (12) adapted to perform an equalization on the received signal in the frequency domain on the basis of the noise reduced channel estimation result from the noise reduction means (8). The present invention further relates to corresponding method.The present invention enables an improvement of the equalization performance.
摘要翻译：本发明涉及一种用于在无线通信系统中接收信号的接收装置（1），其中信号包括专用信道估计序列，其包括信道估计装置（6），适用于对专用信道估计进行信道估计包括在接收信号中的序列，噪声降低装置（8），其适于通过将低于噪声阈值的信道估计结果的复样本设置为零来减少从信道估计装置获得的信道估计结果中的噪声，以及频率域均衡装置（12），其适于基于来自噪声降低装置（8）的噪声降低的信道估计结果对频域中的接收信号执行均衡。本发明还涉及相应的方法。本发明能够提高均衡性能。

4. 发明申请

US20100195710A1 RECEIVING APPARATUS WITH FREQUENCY DOMAIN EQUALIZER 有权
标题翻译：接收具有频域均衡器的设备
公开(公告)号：US20100195710A1
公开(公告)日：2010-08-05
申请号：US12619847
申请日：2009-11-17
申请人： Richard STIRLING-GALLACHER , Ralf Boehnke , Zhaocheng Wang
发明人： Richard STIRLING-GALLACHER , Ralf Boehnke , Zhaocheng Wang
IPC分类号： H04B1/10 , H03K5/159
CPC分类号： H04L25/03159 , H04L25/0212 , H04L25/0224
摘要： The present invention relates to a receiving apparatus (1) for receiving signals in a wireless communication system, in which the signals comprise a dedicated channel estimation sequence, comprising a channel estimation means (6) adapted to perform a channel estimation on a dedicated channel estimation sequence comprised in a received signal, a noise reduction means (8) adapted to reduce noise in the channel estimation result obtained from the channel estimation means by setting complex samples of the channel estimation result which are below a noise threshold to zero, and a frequency domain equalizing means (12) adapted to perform an equalization on the received signal in the frequency domain on the basis of the noise reduced channel estimation result from the noise reduction means (8). The present invention further relates to corresponding method.The present invention enables an improvement of the equalisation performance.
摘要翻译：本发明涉及一种用于在无线通信系统中接收信号的接收装置（1），其中信号包括专用信道估计序列，其包括信道估计装置（6），适用于对专用信道估计进行信道估计包括在接收信号中的序列，噪声降低装置（8），其适于通过将低于噪声阈值的信道估计结果的复样本设置为零来减少从信道估计装置获得的信道估计结果中的噪声，以及频率域均衡装置（12），其适于基于来自噪声降低装置（8）的噪声降低的信道估计结果对频域中的接收信号执行均衡。本发明还涉及相应的方法。本发明能够提高均衡性能。

5. 发明申请

US20110182378A1 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：US20110182378A1
公开(公告)日：2011-07-28
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 , H04B7/02
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。

6. 发明授权

US07664009B2 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：US07664009B2
公开(公告)日：2010-02-16
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： 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 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。

7. 发明授权

US07646700B2 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：US07646700B2
公开(公告)日：2010-01-12
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 , 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 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。

8. 发明授权

US08532133B2 Pilot pattern design for a STTD scheme in an OFDM system 有权
公开(公告)号：US08532133B2
公开(公告)日：2013-09-10
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： H04Q11/02
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.

9. 发明授权

US07746759B2 Pilot pattern design for an OFDM system 有权
公开(公告)号：US07746759B2
公开(公告)日：2010-06-29
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 , 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 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.

10. 发明授权

US07221645B2 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：US07221645B2
公开(公告)日：2007-05-22
申请号：US09898389
申请日：2001-07-03
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。

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