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1. 发明授权

US08934330B2 Method and apparatus for channel estimation 有权
标题翻译：用于信道估计的方法和装置
公开(公告)号：US08934330B2
公开(公告)日：2015-01-13
申请号：US13519577
申请日：2009-12-29
申请人： Ben Niu , Gang Liu , Li Zou
发明人： Ben Niu , Gang Liu , Li Zou
IPC分类号： H04J11/00 , H04L25/02 , H04L27/26
CPC分类号： H04L27/2647 , H04L25/0204 , H04L25/022 , H04L25/0222 , H04L25/0232
摘要： The present invention provides a method for channel estimation used in a receiver of a multi-carrier communication system, including: receiving a multi-carrier symbols from a transmitter of the multi-carrier communication system; and obtaining channel information of sub-carriers carrying data of the multi-carrier symbols, using selectively time direction interpolation and frequency direction interpolation for channel information of a plurality of scatter pilots of the multi-carrier symbols.
摘要翻译：本发明提供一种用于多载波通信系统的接收机中的信道估计方法，包括：从多载波通信系统的发射机接收多载波符号; 以及使用多载波符号的多个散射导频的信道信息选择性地进行时间内插和频率方向插值来获得承载多载波符号数据的子载波的信道信息。

2. 发明申请

US20120287803A1 METHOD AND APPARATUS FOR CHANNEL ESTIMATION 有权
标题翻译：信道估计的方法和装置
公开(公告)号：US20120287803A1
公开(公告)日：2012-11-15
申请号：US13519577
申请日：2009-12-29
申请人： Ben Niu , Gang Liu , Li Zou
发明人： Ben Niu , Gang Liu , Li Zou
IPC分类号： H04L12/26
CPC分类号： H04L27/2647 , H04L25/0204 , H04L25/022 , H04L25/0222 , H04L25/0232
摘要： The present invention provides a method for channel estimation used in a receiver of a multi-carrier communication system, including: receiving a multi-carrier symbols from a transmitter of the multi-carrier communication system; and obtaining channel information of sub-carriers carrying data of the multi-carrier symbols, using selectively time direction interpolation and frequency direction interpolation for channel information of a plurality of scatter pilots of the multi-carrier symbols.
摘要翻译：本发明提供一种用于多载波通信系统的接收机中的信道估计方法，包括：从多载波通信系统的发射机接收多载波符号; 以及使用多载波符号的多个散射导频的信道信息选择性地进行时间内插和频率方向插值来获得承载多载波符号数据的子载波的信道信息。

3. 发明授权

US08879380B2 Method and apparatus for channel estimation 有权
公开(公告)号：US08879380B2
公开(公告)日：2014-11-04
申请号：US13519577
申请日：2009-12-29
申请人： Ben Niu , Gang Liu , Li Zou
发明人： Ben Niu , Gang Liu , Li Zou
IPC分类号： H04J11/00 , H04L25/02 , H04L27/26
摘要： The present invention provides a method for channel estimation used in a receiver of a multi-carrier communication system, including: receiving a multi-carrier symbols from a transmitter of the multi-carrier communication system; and obtaining channel information of sub-carriers carrying data of the multi-carrier symbols, using selectively time direction interpolation and frequency direction interpolation for channel information of a plurality of scatter pilots of the multi-carrier symbols.

4. 发明授权

US09106498B2 Method for symbol synchronization of received digital signal and digital signal receiver using the same method 有权
标题翻译：接收数字信号和数字信号接收机的符号同步方法采用相同的方法
公开(公告)号：US09106498B2
公开(公告)日：2015-08-11
申请号：US12448885
申请日：2007-01-18
申请人： Gang Liu , Li Zou
发明人： Gang Liu , Li Zou
IPC分类号： H04L7/00 , H04L27/26
CPC分类号： H04L27/2662 , H04L27/2678 , H04L27/2688
摘要： A method for symbol synchronization of received digital signal and a digital signal reception apparatus are provided. The method comprises steps of correlating the received digital signal with the received signal delayed by one symbol so as to obtain a first correlation value result as a combined effort of a strongest path and other paths; removing substantially effect of the strongest path from the first correlation result so as to obtain a second correlation result which exhibits contribution of a fastest path; searching a maximum correlation value and its position of the fastest path so as to determine symbol synchronization timing for initiating FFT processing. The digital signal reception apparatus is characterized by a symbol timing detecting unit for determining symbol synchronization timing of the fastest path through substantially removing the effect of a strongest path.
摘要翻译：提供了接收数字信号的符号同步的方法和数字信号接收装置。该方法包括以下步骤：将接收到的数字信号与延迟了一个符号的接收信号进行相关，以获得作为最强路径和其他路径的组合努力的第一相关值结果; 从第一相关结果中去除最强路径的基本影响，以便获得表现出最快路径贡献的第二相关结果; 搜索最大相关值及其最快路径的位置，以便确定用于启动FFT处理的符号同步定时。数字信号接收装置的特征在于符号定时检测单元，用于通过基本上消除最强路径的影响来确定最快路径的符号同步定时。

5. 发明申请

US20100061478A1 METHOD FOR SYMBOL SYNCHRONIZATION OF RECEIVED DIGITAL SIGNAL AND DIGITAL SIGNAL RECEIVER USING THE SAME METHOD 有权
标题翻译：使用相同方法的接收数字信号和数字信号接收器的符号同步方法
公开(公告)号：US20100061478A1
公开(公告)日：2010-03-11
申请号：US12448885
申请日：2007-01-18
申请人： Gang Liu , Li Zou
发明人： Gang Liu , Li Zou
IPC分类号： H04L7/00 , H04B7/02
CPC分类号： H04L27/2662 , H04L27/2678 , H04L27/2688
摘要： A method for symbol synchronization of received digital signal and a digital signal reception apparatus are provided. The method comprises steps of correlating the received digital signal with the received signal delayed by one symbol so as to obtain a first correlation value result as a combined effort of a strongest path and other paths; removing substantially effect of the strongest path from the first correlation result so as to obtain a second correlation result which exhibits contribution of a fastest path; searching a maximum correlation value and its position of the fastest path so as to determine symbol synchronization timing for initiating FFT processing. The digital signal reception apparatus is characterized by a symbol timing detecting unit for determining symbol synchronization timing of the fastest path through substantially removing the effect of a strongest path.
摘要翻译：提供了接收数字信号的符号同步的方法和数字信号接收装置。该方法包括以下步骤：将接收到的数字信号与延迟了一个符号的接收信号进行相关，以获得作为最强路径和其他路径的组合努力的第一相关值结果; 从第一相关结果中去除最强路径的基本影响，以便获得表现出最快路径贡献的第二相关结果; 搜索最大相关值及其最快路径的位置，以便确定用于启动FFT处理的符号同步定时。数字信号接收装置的特征在于符号定时检测单元，用于通过基本上消除最强路径的影响来确定最快路径的符号同步定时。

6. 发明申请

US20220085614A1 RELATING TO POWER CONVERTERS 有权
公开(公告)号：US20220085614A1
公开(公告)日：2022-03-17
申请号：US17387857
申请日：2021-07-28
申请人： John Fradley , Li Zou , Carl Barker
发明人： John Fradley , Li Zou , Carl Barker
IPC分类号： H02J3/36 , H02M7/757 , H02H7/26
摘要： In the field of high voltage direct current (HVDC) power transmission networks there is a need for an improved power converter.
A power converter, for use in a HVDC power transmission network, comprises first and second DC terminals, for connection in use to a DC network and between which extends at least one converter limb. The or each converter limb includes first and second limb portions which are separated by an AC terminal, for connection in use to an AC network. Each limb portion includes a switching valve, and the power converter including a controller programmed to control switching of the switching valves to control the flow of a converter current (Imax) through the power converter and thereby in-use transfer power between the power converter and the AC network. The power transferred between the power converter and the AC network has an active component and a reactive component. The controller is further programmed in use to: (i) prioritize to a first extent the transfer of reactive power between the power converter and the AC network during a first operating condition, when the AC voltage (V) of the AC network lies outside a desired operating range, by allowing up to a first amount of the converter current (Imax) to be a reactive current; and (ii) prioritize to a second extent, less than the first extent, the transfer of reactive power between the power converter and the AC network during a second operating condition, when the AC voltage (V) of the AC network lies within the desired operating range, by limiting the amount of converter current (Imax) that can be a reactive current to a second amount, less than the first amount, the second amount being determined according to a measured operating frequency of the AC network.

7. 发明授权

US08433007B2 Receiver and method for receiving digital signal 有权
标题翻译：用于接收数字信号的接收机和方法
公开(公告)号：US08433007B2
公开(公告)日：2013-04-30
申请号：US12456981
申请日：2009-06-25
申请人： Juan Xiang , Li Zou
发明人： Juan Xiang , Li Zou
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L27/2657 , H04L27/2605 , H04L27/2678 , H04L27/3872 , H04L2027/0095
摘要： The present invention provides a receiver for receiving digital signals including frames with a binary modulated cyclic preamble, comprising: means for correlating at least part of a first cyclic preamble in a first frame and at least part of a second cyclic preamble in a second frame, and for determining a carrier frequency offset based on said correlation.
摘要翻译：本发明提供了一种用于接收包括具有二进制调制循环前导码的帧的数字信号的接收机，包括：用于在第一帧中将第一帧中的第一循环前同步码的至少一部分和至少部分第二循环前置码相关的装置，并且用于基于所述相关来确定载波频率偏移。

8. 发明申请

US20120134446A1 METHOD AND APPARATUS FOR RECEIVING DATA 有权
标题翻译：接收数据的方法和装置
公开(公告)号：US20120134446A1
公开(公告)日：2012-05-31
申请号：US13388820
申请日：2010-07-20
申请人： Wei Zhou , Li Zou , Yuping Zhao , Xiaoxin Zhang , Peng Liu , Charles Chuanming Wang
发明人： Wei Zhou , Li Zou , Yuping Zhao , Xiaoxin Zhang , Peng Liu , Charles Chuanming Wang
IPC分类号： H04L27/06 , H03D1/02
CPC分类号： H04L27/38 , H03M13/655 , H03M13/6552 , H04L27/2647 , H04L27/3405 , H04L27/3488
摘要： Modem coding and modulation techniques have greatly improved the transmission and reception of signals. A method is described including receiving a signal de-mapping the signal into a first and second substream, decoding the first and second substream using a low density parity check decoding process, and combining the first and second decoded substream into a single data stream. An apparatus is described including a symbol de-mapper that receives a signal de-maps the modulation symbols in the signal into a first and second substream, a first decoder that decodes the first substream using a low density parity check coding process at a first decoding rate, a second decoder that decodes the second substream at a second encoding rate, and a combiner that combines the first substream and the second substream into a single data stream.
摘要翻译：调制解调器编码和调制技术大大改善了信号的发送和接收。描述了一种方法，包括接收将信号解映射到第一和第二子流中的信号，使用低密度奇偶校验解码过程对第一和第二子流进行解码，以及将第一和第二解码子流合并成单个数据流。描述了一种装置，其包括接收将信号中的调制符号解映射成第一和第二子流的信号的符号解映射器，第一解码器，其在第一解码时使用低密度奇偶校验编码处理对第一子流进行解码速率，以第二编码速率解码第二子流的第二解码器，以及将第一子流和第二子流组合成单个数据流的组合器。

9. 发明申请

US20110129035A1 SELF-ADAPTIVE FREQUENCY INTERPOLATOR FOR USE IN A MULTI-CARRIER RECEIVER 有权
标题翻译：用于多载波接收机的自适应频率插值器
公开(公告)号：US20110129035A1
公开(公告)日：2011-06-02
申请号：US12733455
申请日：2008-09-19
申请人： Peng Liu , Li Zou
发明人： Peng Liu , Li Zou
IPC分类号： H04L27/00
CPC分类号： H04L25/0232 , H04L25/0204 , H04L25/0216 , H04L27/2647
摘要： A Digital Video Broadcasting-Terrestrial/Handheld (DVB-T/H) receiver comprises a controller and a frequency interpolator for use in estimating channel state information (CSI) information of a received signal by frequency interpolation. The controller determines a multi-path delay (Tmax) for the received signal and adjusts the bandwidth of the frequency interpolator as a function of the determined multi-path delay. For example, when the multi-path delay is small, the bandwidth of the frequency interpolator is adjusted to be smaller than the bandwidth of the frequency interpolator when the multi-path delay is large. In addition, the controller may also change the coefficients of the frequency interpolator such that different word lengths are used for the coefficients as a function of the determined multi-path delay.
摘要翻译：数字视频广播 - 地面/手持（DVB-T / H）接收机包括控制器和频率插值器，用于通过频率插值来估计接收信号的信道状态信息（CSI）信息。控制器确定接收信号的多径延迟（Tmax），并根据确定的多径延迟调整频率插值器的带宽。例如，当多径延迟小时，当多路径延迟较大时，频率插值器的带宽被调整为小于频率插值器的带宽。另外，控制器还可以改变频率插值器的系数，使得不同的字长度被用作系数，作为确定的多径延迟的函数。

10. 发明申请

US20100034300A1 Receiver and method for receiving digital signal 有权
标题翻译：用于接收数字信号的接收机和方法
公开(公告)号：US20100034300A1
公开(公告)日：2010-02-11
申请号：US12456981
申请日：2009-06-25
申请人： Juan Xiang , Li Zou
发明人： Juan Xiang , Li Zou
IPC分类号： H04L27/14 , H04L27/28
CPC分类号： H04L27/2657 , H04L27/2605 , H04L27/2678 , H04L27/3872 , H04L2027/0095
摘要： The present invention provides a receiver for receiving digital signals including frames with a binary modulated cyclic preamble, comprising: means for correlating at least part of a first cyclic preamble in a first frame and at least part of a second cyclic preamble in a second frame, and for determining a carrier frequency offset based on said correlation.
摘要翻译：本发明提供了一种用于接收包括具有二进制调制循环前导码的帧的数字信号的接收机，包括：用于在第一帧中将第一帧中的第一循环前同步码的至少一部分和至少部分第二循环前置码相关的装置，并且用于基于所述相关来确定载波频率偏移。

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