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11. 发明授权

US07970070B2 Adaptive frequency domain equalization in OFDM based communication system 有权
标题翻译：基于OFDM的通信系统中的自适应频域均衡
公开(公告)号：US07970070B2
公开(公告)日：2011-06-28
申请号：US12120505
申请日：2008-05-14
申请人： Nabil Yousef , Jun Ma , Yongru Gu
发明人： Nabil Yousef , Jun Ma , Yongru Gu
IPC分类号： H04K1/10
CPC分类号： H04L25/03159 , H04L25/0216 , H04L25/0232 , H04L27/2601
摘要： An apparatus, system, and method of performing adaptive frequency domain equalization in an Orthogonal Frequency Domain Multiplexing (OFDM) based communication system transmitting data information, wherein the method comprises receiving OFDM symbols comprising scattered pilots; obtaining channel estimates on every third bin of the scattered pilots in a frequency domain, wherein the channel estimates are obtained by performing an interpolation in a time domain across the received OFDM symbols; estimating an original channel based on the channel estimates, wherein the original channel in the time domain is estimated by applying a finite impulse response (FIR) low-pass filter in a frequency domain, wherein the FIR low-pass filter is adaptive according to a delay span of an original channel impulse response and is sufficiently wide to cover the delay span of the original channel impulse response; and dividing the received OFDM symbols by the channel estimate to obtain transmitted data information.
摘要翻译：一种在基于正交频域复用（OFDM）的基于OFDM的通信系统中执行自适应频域均衡的装置，系统和方法，该方法包括：接收包含散射飞行员的OFDM符号; 在频域中获得所述散射导频的每第三个二进制的信道估计，其中所述信道估计是通过在所接收的OFDM符号中的时域执行内插而获得的; 基于信道估计来估计原始信道，其中通过在频域中应用有限脉冲响应（FIR）低通滤波器来估计时域中的原始信道，其中，FIR低通滤波器根据原始信道脉冲响应的延迟范围，并且足够宽以覆盖原始信道脉冲响应的延迟范围; 并且将所接收的OFDM符号除以信道估计以获得发送的数据信息。

12. 发明申请

US20090285314A1 ADAPTIVE FREQUENCY DOMAIN EQUALIZATION IN OFDM BASED COMMUNICATION SYSTEM 有权
标题翻译：基于OFDM的通信系统的自适应频域均衡
公开(公告)号：US20090285314A1
公开(公告)日：2009-11-19
申请号：US12120505
申请日：2008-05-14
申请人： Nabil Yousef , Jun Ma , Yongru Gu
发明人： Nabil Yousef , Jun Ma , Yongru Gu
IPC分类号： H04L27/28
CPC分类号： H04L25/03159 , H04L25/0216 , H04L25/0232 , H04L27/2601
摘要： An apparatus, system, and method of performing adaptive frequency domain equalization in an Orthogonal Frequency Domain Multiplexing (OFDM) based communication system transmitting data information, wherein the method comprises receiving OFDM symbols comprising scattered pilots; obtaining channel estimates on every third bin of the scattered pilots in a frequency domain, wherein the channel estimates are obtained by performing an interpolation in a time domain across the received OFDM symbols; estimating an original channel based on the channel estimates, wherein the original channel in the time domain is estimated by applying a finite impulse response (FIR) low-pass filter in a frequency domain, wherein the FIR low-pass filter is adaptive according to a delay span of an original channel impulse response and is sufficiently wide to cover the delay span of the original channel impulse response; and dividing the received OFDM symbols by the channel estimate to obtain transmitted data information.
摘要翻译：一种在基于正交频域复用（OFDM）的基于OFDM的通信系统中执行自适应频域均衡的装置，系统和方法，该方法包括：接收包含散射飞行员的OFDM符号; 在频域中获得所述散射导频的每第三个二进制的信道估计，其中所述信道估计是通过在所接收的OFDM符号中的时域执行内插而获得的; 基于信道估计来估计原始信道，其中通过在频域中应用有限脉冲响应（FIR）低通滤波器来估计时域中的原始信道，其中，FIR低通滤波器根据原始信道脉冲响应的延迟范围，并且足够宽以覆盖原始信道脉冲响应的延迟范围; 并且将所接收的OFDM符号除以信道估计以获得发送的数据信息。

13. 发明申请

US20090252239A1 ROBUST FINE FREQUENCY AND TIME ESTIMATION IN MEDIALFLO SYSTEM RECEIVERS 有权
标题翻译： MEDIALFLO系统接收器中的稳健精细频率和时间估计
公开(公告)号：US20090252239A1
公开(公告)日：2009-10-08
申请号：US12062774
申请日：2008-04-04
申请人： Jun Ma , Nabil Yousef
发明人： Jun Ma , Nabil Yousef
IPC分类号： H04L27/28 , H04L27/06
CPC分类号： H04L27/2657 , H04L27/2662 , H04L27/2675
摘要： A technique for estimating a carrier frequency offset and a timing offset in a MediaFLO™ (Forward Link Only) system, wherein the method comprises receiving Orthogonal Frequency Division Multiplexing (OFDM) symbols; interpolating pilots on odd or even symbols of the received OFDM symbols; determining a phase difference between two successive symbols using the interpolated pilots; obtaining an estimate of the carrier frequency offset and the timing offset from the determined phase difference between two successive symbols; and correcting a sampling frequency in accordance with the estimated carrier frequency offset and timing offset.
摘要翻译：一种用于估计MediaFLO TM（仅前向链路）系统中的载波频率偏移和定时偏移的技术，其中所述方法包括接收正交频分复用（OFDM）符号; 在所接收的OFDM符号的奇数或偶数符号上内插导频; 使用内插导频确定两个连续符号之间的相位差; 从两个连续符号之间确定的相位差获得载波频率偏移和定时偏移的估计; 以及根据估计的载波频率偏移和定时偏移来校正采样频率。

14. 发明申请

US20070291864A1 Low complexity soft-input Viterbi decoding for digital communication systems 有权
标题翻译：用于数字通信系统的低复杂度软输入维特比解码
公开(公告)号：US20070291864A1
公开(公告)日：2007-12-20
申请号：US11471187
申请日：2006-06-20
申请人： Jun Ma , Nabil Yousef
发明人： Jun Ma , Nabil Yousef
IPC分类号： H04L23/02 , H04L5/12
CPC分类号： H04L25/067 , H04L1/0041 , H04L1/0052 , H04L1/0054 , H04L1/006 , H04L1/0071 , H04L27/34 , H04L27/38
摘要： A DVB-H bit-interleave coded modulation/demodulation system and method includes a convolutional encoder; an interleaver operatively connected to the convolutional encoder; a quadrature amplitude modulation (QAM) mapper operatively connected to the interleaver; a channel component operatively connected to the QAM mapper; a QAM demapper operatively connected to the channel component; a de-interleaver operatively connected to the QAM demapper; and a Viterbi decoder operatively connected to the de-interleaver. Preferably, the interleaver comprises a bit-wise interleaver and a symbol-wise interleaver operatively connected to the bit-wise interleaver. Preferably, the de-interleaver comprises a bit-wise de-interleaver; and a symbol-wise de-interleaver operatively connected to the bit-wise de-interleaver. The de-interleaver may be adapted to decode a soft decision metric for any of a QPSK, 16 QAM, and 64 QAM modulation. The de-interleaver may be adapted to decode a soft decision metric computation comprising a log-likelihood ratio soft decision metric of a binary bit stream of a signal.
摘要翻译： DVB-H位交织编码调制/解调系统和方法包括卷积编码器; 可操作地连接到卷积编码器的交织器; 可操作地连接到交织器的正交幅度调制（QAM）映射器; 可操作地连接到QAM映射器的信道分量; 可操作地连接到信道分量的QAM解映射器; 可操作地连接到QAM解映射器的解交织器; 以及可操作地连接到解交织器的维特比解码器。优选地，交织器包括可操作地连接到逐位交织器的逐位交织器和符号方式的交织器。优选地，解交织器包括位逐去交织器; 以及可操作地连接到逐位解交织器的符号式解交织器。解交织器可以适于解码用于QPSK，16QAM和64QAM调制中的任何一个的软判决度量。解交织器可以适于解码包括信号的二进制比特流的对数似然比软判决度量的软判决度量计算。

15. 发明申请

US20070053470A1 Iterative data-aided carrier frequency offset estimation for code division multiple access systems 有权
公开(公告)号：US20070053470A1
公开(公告)日：2007-03-08
申请号：US11592286
申请日：2006-11-02
申请人： Nabil Yousef , Jun Ma , Jonathan Min
发明人： Nabil Yousef , Jun Ma , Jonathan Min
IPC分类号： H04L27/06
CPC分类号： H04B1/707 , H04B2201/70701 , H04L2027/0055
摘要： Iterative data-aided carrier CFO estimation for CDMA systems. Any communication receiver may be adapted to perform the iterative data-aided carrier CFO estimation. The iterative data-aided carrier CFO estimation is performed using a high accuracy method. The operation may be described as follows: a received signal is despread and buffered. Using the received preamble sequence, an initial estimate of the CFO is obtained. This estimate is used to correct the whole despread data. The corrected data using the initial CFO estimate is sliced. Each despread data symbol is divided by the corresponding sliced data decision. The obtained sequence is then averaged across different codes to obtain a less noisy sequence, which is then used to estimate the CFO again. The procedure can be repeated (iterated) to obtain a more accurate carrier frequency offset estimate; the number of times in which the procedure is repeated may be programmable or predetermined.

16. 发明授权

US07941117B2 Digital approach for image rejection correction in low intermediate frequency conversion tuner 有权
标题翻译：低中频转换调谐器中的图像抑制校正的数字方法
公开(公告)号：US07941117B2
公开(公告)日：2011-05-10
申请号：US12039806
申请日：2008-02-29
申请人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
发明人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
IPC分类号： H04B1/10
CPC分类号： H04B1/30 , H04L27/3863 , H04L27/3872
摘要： A method of processing an in-phase signal component and a quadrature signal component of a low intermediate frequency (LIF) signal includes estimating and correcting an amplitude imbalance between a digitized in-phase signal component and a digitized quadrature signal component at a first point in time, and estimating and correcting a phase imbalance between the digitized in-phase signal component and the digitized quadrature signal component at a second point in time in response to the correcting process. The digitized in-phase signal component corresponds to the in-phase signal component at the first point in time and the digitized quadrature signal component corresponds to the quadrature signal component at the first point in time. The second point in the time is subsequent to the first point in time.
摘要翻译：处理低中频（LIF）信号的同相信号分量和正交信号分量的方法包括：估计和校正数字化的同相信号分量与数字化正交信号分量之间的振幅不平衡时间，并且响应于校正处理，在第二时间点估计和校正数字化同相信号分量和数字化正交信号分量之间的相位不平衡。数字化的同相信号分量对应于第一时间点的同相信号分量，数字化的正交信号分量对应于第一时间点的正交信号分量。第二点在第一时间点之后。

17. 发明申请

US20090221255A1 DIGITAL APPROACH FOR IMAGE REJECTION CORRECTION IN LOW INTERMEDIATE FREQUENCY CONVERSION TUNER 有权
标题翻译：低频中频转换调谐器图像抑制校正的数字方法
公开(公告)号：US20090221255A1
公开(公告)日：2009-09-03
申请号：US12039806
申请日：2008-02-29
申请人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
发明人： Jun Ma , Ahmed Eltawil , Xiaoyu Fu
IPC分类号： H04B1/10 , H03H11/16 , H03L5/00
CPC分类号： H04B1/30 , H04L27/3863 , H04L27/3872
摘要： A method of processing an in-phase signal component and a quadrature signal component of a low intermediate frequency (LIF) signal includes estimating and correcting an amplitude imbalance between a digitized in-phase signal component and a digitized quadrature signal component at a first point in time, and estimating and correcting a phase imbalance between the digitized in-phase signal component and the digitized quadrature signal component at a second point in time in response to the correcting process. The digitized in-phase signal component corresponds to the in-phase signal component at the first point in time and the digitized quadrature signal component corresponds to the quadrature signal component at the first point in time. The second point in the time is subsequent to the first point in time.
摘要翻译：处理低中频（LIF）信号的同相信号分量和正交信号分量的方法包括：估计和校正数字化的同相信号分量与数字化正交信号分量之间的振幅不平衡时间，并且响应于校正处理，在第二时间点估计和校正数字化同相信号分量和数字化正交信号分量之间的相位不平衡。数字化的同相信号分量对应于第一时间点的同相信号分量，数字化的正交信号分量对应于第一时间点的正交信号分量。第二点在第一时间点之后。

18. 发明申请

US20200165436A1 METHOD AND APPARATUS FOR MODIFIED PVC PASTE RESIN 审中-公开
公开(公告)号：US20200165436A1
公开(公告)日：2020-05-28
申请号：US16200294
申请日：2018-11-26
申请人： Jun Ma
发明人： Jun Ma
IPC分类号： C08L27/22 , C08L83/04 , C08K5/00 , C08K11/00 , C08K3/36 , C08L77/00 , C08L71/02 , C08K5/20 , C08J3/00 , C08J3/12 , C08J3/18
摘要： The present invention discloses a modified polyvinyl chloride (PVC) paste resin and a method of making thereof. The PVC paste resin is prepared by mixing a PVC paste resin with polysiloxane (PBP), for example polyborodimethylsiloxanes.

19. 发明授权

US09126828B2 Mixed structures of single walled and multi walled carbon nanotubes 有权
标题翻译：单壁和多壁碳纳米管的混合结构
公开(公告)号：US09126828B2
公开(公告)日：2015-09-08
申请号：US11841676
申请日：2007-08-20
申请人： Jun Ma , Alan Fiseher , Robert Hoch
发明人： Jun Ma , Alan Fiseher , Robert Hoch
IPC分类号： C01B31/00 , C01B31/04 , C01B31/08 , B82B1/00 , B82Y30/00 , B82Y40/00 , C01B31/02
CPC分类号： B82B1/00 , B82Y30/00 , B82Y40/00 , C01B32/16 , C01B32/174
摘要： The invention relates to carbon nanotube structures containing both single walled and multi walled carbon nanotubes, and methods for preparing same. These carbon nanotube structures include but are not limited to macroscopic two and three dimensional structures of carbon nanotubes such as assemblages, mats, plugs, networks, rigid porous structures, extrudates, etc. The carbon nanotube structures of the present invention have a variety of uses, including but not limited to, porous media for filtration, adsorption, chromatography; electrodes and current collectors for supercapacitors, batteries and fuel cells; catalyst supports, (including electrocatalysis), etc.
摘要翻译：本发明涉及含有单壁和多壁碳纳米管的碳纳米管结构及其制备方法。这些碳纳米管结构包括但不限于碳纳米管的宏观二维和三维结构，例如组合物，垫，塞子，网络，刚性多孔结构，挤出物等。本发明的碳纳米管结构具有多种用途包括但不限于用于过滤，吸附，色谱的多孔介质; 用于超级电容器，电池和燃料电池的电极和集电器; 催化剂载体（包括电催化）等

20. 发明授权

US08950849B2 Water vapor control structure 有权
标题翻译：水汽控制结构
公开(公告)号：US08950849B2
公开(公告)日：2015-02-10
申请号：US13371937
申请日：2012-02-13
申请人： Andrew W. Hays , Jun Ma
发明人： Andrew W. Hays , Jun Ma
IPC分类号： B41J2/045 , B41J2/175
CPC分类号： B41J2/14233
摘要： In some aspects of the present application, an inkjet printing device is disclosed that can comprises an enclosed module configured to store ink and provide a path for ink flow; and an annular structure surrounding the path for ink flow, wherein the annular structure comprises a first polymer structure; a void structure arranged to surround the first polymer structure; and a second polymer structure arranged to surround the void structure.
摘要翻译：在本申请的一些方面，公开了一种喷墨打印装置，其可以包括被配置为存储墨水并提供油墨流动路径的封闭模块; 以及围绕所述油墨流动路径的环形结构，其中所述环形结构包括第一聚合物结构; 布置成围绕第一聚合物结构的空隙结构; 以及布置成围绕所述空隙结构的第二聚合物结构。

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