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1. 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.

2. 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。

3. 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.

4. 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。

5. 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。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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。

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