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11. 发明申请

US20090207311A1 TECHNIQUE FOR TUNER AUTOMATIC GAIN CONTROL CIRCUIT FOR MOBILE TELEVISION APPLICATIONS 有权
标题翻译：用于移动电视应用的调谐器自动增益控制电路的技术
公开(公告)号：US20090207311A1
公开(公告)日：2009-08-20
申请号：US12033323
申请日：2008-02-19
申请人： Xiaoyu Fu , Jun Ma , Waleed M. Younis , Nabil Yousef , Janakan Sivasubramaniam , Edward Youssoufian
发明人： Xiaoyu Fu , Jun Ma , Waleed M. Younis , Nabil Yousef , Janakan Sivasubramaniam , Edward Youssoufian
IPC分类号： H04N5/52 , H04B1/06
CPC分类号： H04N5/52 , H03G3/001 , H03G3/3068 , H04N5/4446
摘要： A technique for providing stable tracking performance to an AGC loop circuit comprises amplifying a wideband radio frequency signal; detecting signals and blockers adjacent to the radio frequency signal; lowering a gain of the radio frequency signal; mixing a local oscillator signal with the radio frequency signal; shifting a frequency of the radio frequency signal from a radio frequency to an intermediate frequency; continuously varying a gain of the intermediate frequency signal; converting the intermediate frequency signal into a digital output signal; comparing the digital output signal with predefined thresholds comprising an upper threshold and a lower threshold; switching a post mixer amplifier (PMA) to a high gain state when an input of a variable gain amplifier (VGA) is greater than the upper threshold, and switching the PMA to a low gain state when an input of the VGA is lower than the lower threshold.
摘要翻译：一种用于向AGC环路电路提供稳定跟踪性能的技术包括放大宽带射频信号; 检测与射频信号相邻的信号和阻塞; 降低射频信号的增益; 将本地振荡器信号与射频信号混合; 将射频信号的频率从射频转换到中频; 连续地改变中频信号的增益; 将所述中频信号转换为数字输出信号; 将数字输出信号与包括上阈值和下阈值的预定阈值进行比较; 当可变增益放大器（VGA）的输入大于上阈值时，将后混频器放大器（PMA）切换到高增益状态，并且当VGA的输入低于该阈值时，将PMA切换到低增益状态较低的门槛。

12. 发明授权

US07944983B2 Coarse carrier frequency offset estimation for CMMB mobile TV receiver 有权
标题翻译： CMMB移动电视接收机的粗载波频偏估计
公开(公告)号：US07944983B2
公开(公告)日：2011-05-17
申请号：US12039799
申请日：2008-02-29
申请人： Xiaoyu Fu , Jun Ma , Nabil Yousef
发明人： Xiaoyu Fu , Jun Ma , Nabil Yousef
IPC分类号： H04K1/10
CPC分类号： H04L27/2676 , H04L27/2659
摘要： A method of estimating coarse frequency offset of received symbols based on a received frequency domain sample at a kth sub-carrier of a 53rd Orthogonal Frequency Division Multiplexing (OFDM) data symbol in a jth time slot (TS) of a receiver in a China Multimedia Mobile Broadcasting (CMMB) mobile television network includes dividing a received sample, Ykj, into two sets of noise only tones and data plus noise tones Dkj, obtaining a received sample only if there is a coarse frequency offset mismatch between a transmitter and the receiver, dividing a summation of a power of the data plus noise tones by a summation of a power of the noise only tones to obtain Λkj, and estimating an integer coarse frequency offset estimate, Δ{circumflex over (f)}Ij, of the received symbols when the Λkj is a maximum.
摘要翻译：一种基于中国多媒体接收机的第j个时隙（TS）中第53个正交频分复用（OFDM）数据符号的第k个子载波的接收频域样本估计接收符号的粗略偏移的方法移动广播（CMMB）移动电视网络包括将接收到的采样Ykj划分为两组仅噪声的音调和数据加噪声音调Dkj，仅在发射机和接收机之间存在粗略的频率偏移不匹配时才获得接收的采样，通过仅噪声音调的功率的总和除以数据的加权和噪声音调的和，以获得Λkj，并且估计所接收到的噪声的整数粗频率偏移估计，并且（D（f）} Ij） ∧kj为最大值时的符号。

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

US07970083B2 Estimating doppler frequency in ISDB-T systems 有权
标题翻译：估计ISDB-T系统中的多普勒频率
公开(公告)号：US07970083B2
公开(公告)日：2011-06-28
申请号：US12062678
申请日：2008-04-04
申请人： Li Liu , Yongru Gu , Jun Ma
发明人： Li Liu , Yongru Gu , Jun Ma
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04B7/01 , H04L5/0007 , H04L5/0048 , H04L27/2647 , H04L2027/0065
摘要： A technique for estimating maximum Doppler frequency of a wireless signal in a wireless communication system, wherein the method comprises receiving a wireless signal; determining an impulse response of the received wireless signal; determining an auto-correlation function (ACF) value of the impulse response of the received wireless signal; determining a power spectrum density of said received wireless signal based on the ACF value; and selecting an algorithm for performing demodulation of the received wireless signal by utilizing the determined power spectrum density.
摘要翻译：一种用于估计无线通信系统中的无线信号的最大多普勒频率的技术，其中所述方法包括接收无线信号; 确定所接收的无线信号的脉冲响应; 确定所接收的无线信号的脉冲响应的自相关函数（ACF）值; 基于所述ACF值确定所述接收到的无线信号的功率谱密度; 以及通过利用所确定的功率谱密度来选择用于对所接收的无线信号进行解调的算法。

17. 发明申请

US20090252263A1 ESTIMATING DOPPLER FREQUENCY IN ISDB-T SYSTEMS 有权
标题翻译：估计ISDB-T系统中的多普勒频率
公开(公告)号：US20090252263A1
公开(公告)日：2009-10-08
申请号：US12062678
申请日：2008-04-04
申请人： Li Liu , Yongru Gu , Jun Ma
发明人： Li Liu , Yongru Gu , Jun Ma
IPC分类号： H04L27/06
CPC分类号： H04B7/01 , H04L5/0007 , H04L5/0048 , H04L27/2647 , H04L2027/0065
摘要： A technique for estimating maximum Doppler frequency of a wireless signal in a wireless communication system, wherein the method comprises receiving a wireless signal; determining an impulse response of the received wireless signal; determining an auto-correlation function (ACF) value of the impulse response of the received wireless signal; determining a power spectrum density of said received wireless signal based on the ACF value; and selecting an algorithm for performing demodulation of the received wireless signal by utilizing the determined power spectrum density.
摘要翻译：一种用于估计无线通信系统中的无线信号的最大多普勒频率的技术，其中所述方法包括接收无线信号; 确定所接收的无线信号的脉冲响应; 确定所接收的无线信号的脉冲响应的自相关函数（ACF）值; 基于所述ACF值确定所述接收到的无线信号的功率谱密度; 以及通过利用所确定的功率谱密度来选择用于对所接收的无线信号进行解调的算法。

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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