专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20090175258A1 METHOD AND DEVICE OF GENERATING TIME-VARYING PREAMBLE SEQUENCE AND PSEUDORANDOM NOISE (PN) BINARY SEQUENCE IN DIRECT SEQUENCE SPREAD SPECTRUM (DSSS) COMMUNICATIONS 有权
标题翻译：在直接序列传播频谱（DSSS）通信中产生时变序列和PSEUDORANDOM噪声（PN）二进制序列的方法和装置
公开(公告)号：US20090175258A1
公开(公告)日：2009-07-09
申请号：US11971429
申请日：2008-01-09
申请人： Xinyu Wang , Igor Elgorriaga , Marcus R. Gahler , Robert P. Higgins , Yefim Poberezhskiy , Paul R. Norris , Brian J. Hatley , Michael S. Foster
发明人： Xinyu Wang , Igor Elgorriaga , Marcus R. Gahler , Robert P. Higgins , Yefim Poberezhskiy , Paul R. Norris , Brian J. Hatley , Michael S. Foster
IPC分类号： H04J3/06 , H04B1/00
CPC分类号： H04J13/00 , H04J13/0022 , H04J13/10 , H04W56/003
摘要： Embodiments of the disclosure provide methods, apparatus, and articles allowing two nodes to communicate in a slot-based direct sequencing spreading communication system. Both a preamble sequence and a payload data spreading PN sequence are generated from the Time of Day and a given user code. Generated sequences are synchronized between two communicating nodes to allow slot-based DSSS communication to take place. Generated sequences also change dynamically from slot to slot to provide waveform security.
摘要翻译：本公开的实施例提供允许两个节点在基于时隙的直接排序扩展通信系统中通信的方法，装置和文章。前导序列和有效载荷数据扩展PN序列都是从时间和给定的用户代码生成的。生成的序列在两个通信节点之间同步，以允许发生基于插槽的DSSS通信。生成的序列也可以从时隙到时隙动态地改变，以提供波形安全性。

2. 发明授权

US08254362B2 Method and device of generating time-varying preamble sequence and pseudorandom noise (PN) binary sequence in direct sequence spread spectrum (DSSS) communications 有权
标题翻译：在直接序列扩频（DSSS）通信中生成时变前导序列和伪随机噪声（PN）二进制序列的方法和装置
公开(公告)号：US08254362B2
公开(公告)日：2012-08-28
申请号：US11971429
申请日：2008-01-09
申请人： Xinyu Wang , Igor Elgorriaga , Marcus R. Gahler , Robert P. Higgins , Yefim Poberezhskiy , Paul R. Norris , Brian J. Hatley , Michael S. Foster
发明人： Xinyu Wang , Igor Elgorriaga , Marcus R. Gahler , Robert P. Higgins , Yefim Poberezhskiy , Paul R. Norris , Brian J. Hatley , Michael S. Foster
IPC分类号： H04J3/02
CPC分类号： H04J13/00 , H04J13/0022 , H04J13/10 , H04W56/003
摘要： Embodiments of the disclosure provide methods, apparatus, and articles allowing two nodes to communicate in a slot-based direct sequencing spreading communication system. Both a preamble sequence and a payload data spreading PN sequence are generated from the Time of Day and a given user code. Generated sequences are synchronized between two communicating nodes to allow slot-based DSSS communication to take place. Generated sequences also change dynamically from slot to slot to provide waveform security.
摘要翻译：本公开的实施例提供允许两个节点在基于时隙的直接排序扩展通信系统中通信的方法，装置和文章。前导序列和有效载荷数据扩展PN序列都是从时间和给定的用户代码生成的。生成的序列在两个通信节点之间同步，以允许发生基于插槽的DSSS通信。生成的序列也可以从时隙到时隙动态地改变，以提供波形安全性。

3. 发明申请

US20090323766A1 METHOD AND DEVICE OF PEAK DETECTION IN PREAMBLE SYNCHRONIZATION FOR DIRECT SEQUENCE SPREAD SPECTRUM COMMUNICATION 有权
标题翻译：用于直接序列传播频谱通信的前同步中峰值检测的方法和设备
公开(公告)号：US20090323766A1
公开(公告)日：2009-12-31
申请号：US11308327
申请日：2006-03-16
申请人： Xinyu Wang , Marcus R Gahler , Igor Elgorriaga , Robert P. Higgins , Paul R. Norris
发明人： Xinyu Wang , Marcus R Gahler , Igor Elgorriaga , Robert P. Higgins , Paul R. Norris
IPC分类号： H04B1/00
CPC分类号： H04B1/7075 , H04B2201/70706
摘要： A spread-spectrum preamble synchronization peak detection system performs multiple statistical tests based on instant and time-averaged channel condition measurements to identify the synchronization peak. In a normalized peak-to-average test, a peak-to-average ratio measurement is normalized by a signal-to-noise ratio measurement to form a new statistical measure which effectively eliminates the impact of the wide dynamic range of the signal-to-noise ratio of the received samples. A transition SNR test is used to eliminate potential false alarms caused by spurious PARN peaks during the transition period at the onset of preamble arrival. Code-phase aligned time-averaging is used to estimate the signal and noise levels over a sliding window. The code-phase alignment of samples effectively separates signal and noise samples in the averaging process, and resulting in more accurate signal and noise measurements. In estimating noise levels, the system takes multi-path interference into account by excluding both the peak signal and the side-lobe signals caused by multi-path wireless channels, resulting in more accurate estimation of noise level.
摘要翻译：扩展频谱前导码同步峰值检测系统基于即时和时间平均信道条件测量来执行多个统计测试以识别同步峰值。在归一化的峰值对平均值测试中，通过信噪比测量对峰值平均比测量进行归一化，以形成新的统计测量，可有效地消除信号与宽度的宽动态范围的影响 - 接收样本的噪声比。过渡SNR测试用于消除在前导码到达开始时的过渡期间由寄生PARN峰引起的潜在的假警报。码相位对准时间平均用于估计滑动窗口上的信号和噪声水平。样本的码相位对准在平均过程中有效地分离信号和噪声样本，并产生更准确的信号和噪声测量。在估计噪声电平时，系统通过排除由多路径无线信道引起的峰值信号和旁瓣信号来考虑多径干扰，从而更准确地估计噪声电平。

4. 发明授权

US07688878B2 Method and device of peak detection in preamble synchronization for direct sequence spread spectrum communication 有权
标题翻译：用于直接序列扩频通信的前同步码中峰值检测的方法和装置
公开(公告)号：US07688878B2
公开(公告)日：2010-03-30
申请号：US11308327
申请日：2006-03-16
申请人： Xinyu Wang , Marcus R Gahler , Igor Elgorriaga , Robert P. Higgins , Paul R. Norris
发明人： Xinyu Wang , Marcus R Gahler , Igor Elgorriaga , Robert P. Higgins , Paul R. Norris
IPC分类号： H04B1/00
CPC分类号： H04B1/7075 , H04B2201/70706
摘要： A spread-spectrum preamble synchronization peak detection system performs multiple statistical tests based on instant and time-averaged channel condition measurements to identify the synchronization peak. In a normalized peak-to-average test, a peak-to-average ratio measurement is normalized by a signal-to-noise ratio measurement to form a new statistical measure which effectively eliminates the impact of the wide dynamic range of the signal-to-noise ratio of the received samples. A transition SNR test is used to eliminate potential false alarms caused by spurious PARN peaks during the transition period at the onset of preamble arrival. Code-phase aligned time-averaging is used to estimate the signal and noise levels over a sliding window. The code-phase alignment of samples effectively separates signal and noise samples in the averaging process, and resulting in more accurate signal and noise measurements. In estimating noise levels, the system takes multi-path interference into account by excluding both the peak signal and the side-lobe signals caused by multi-path wireless channels, resulting in more accurate estimation of noise level.
摘要翻译：扩展频谱前导码同步峰值检测系统基于即时和时间平均信道条件测量来执行多个统计测试以识别同步峰值。在归一化的峰值对平均值测试中，通过信噪比测量对峰值平均比测量进行归一化，以形成新的统计测量，可有效地消除信号与宽度的宽动态范围的影响 - 接收样本的噪声比。过渡SNR测试用于消除在前导码到达开始时的过渡期间由寄生PARN峰引起的潜在的假警报。码相位对准时间平均用于估计滑动窗口上的信号和噪声水平。样本的码相位对准在平均过程中有效地分离信号和噪声样本，并产生更准确的信号和噪声测量。在估计噪声电平时，系统通过排除由多路径无线信道引起的峰值信号和旁瓣信号来考虑多径干扰，从而更准确地估计噪声电平。

5. 发明授权

US08111734B2 Device and method for fast transition from preamble synchronization to data demodulation in direct sequence spread spectrum (DSSS) communications 有权
标题翻译：用于从前同步码到直接序列扩频（DSSS）通信中的数据解调的快速转换的装置和方法
公开(公告)号：US08111734B2
公开(公告)日：2012-02-07
申请号：US12013542
申请日：2008-01-14
申请人： Xinyu Wang , Marcus Gahler , Robert P. Higgins , Paul R. Norris
发明人： Xinyu Wang , Marcus Gahler , Robert P. Higgins , Paul R. Norris
IPC分类号： H04B1/00
CPC分类号： H04B1/7085 , H04B1/7075 , H04B1/7093
摘要： A device for fast transition from preamble synchronization of a received baseband signal to demodulation of the received baseband signal may include a baseband chip tracking loop to generate an offset tracking value to track any initial chip phase offset and Doppler-caused baseband chip frequency drift associated with the received baseband signal. The device may also include a numerical controlled oscillator to correct any Doppler-caused phase rotation associated with the received signal. The device may additionally include a preamble synchronization unit to detect a preamble of the received baseband signal, and to measure a chip phase offset and a baseband Doppler frequency shift associated with the received baseband signal. The chip phase offset may be used to set an initial chip phase offset value of the chip tracking loop so that the chip tracking loop starts with approximately a zero pull-in error. The baseband Doppler frequency shift may be used to set initial frequency offset values in the chip tracking loop and the numerical controlled oscillator so that both start with substantially near-zero offset errors for substantially immediate demodulation of the received signal. The device may further include an output device to output the data demodulated from the received baseband signal.
摘要翻译：用于从接收到的基带信号的前导码同步到接收的基带信号的解调的快速转换的装置可以包括基带芯片跟踪环路，用于产生偏移跟踪值，以跟踪任何初始码片相位偏移和与多普勒频带相关的多普勒引起的基带芯片频率漂移接收的基带信号。该装置还可以包括数字控制振荡器，以校正与接收信号相关联的任何多普勒引起的相位旋转。该装置还可以包括前同步码单元，用于检测接收到的基带信号的前导码，并测量与接收的基带信号相关联的码片相位偏移和基带多普勒频移。芯片相位偏移可用于设置芯片跟踪回路的初始芯片相位偏移值，使得芯片跟踪回路以大致零拉入误差开始。基带多普勒频移可以用于设置芯片跟踪环路和数控振荡器中的初始频率偏移值，使得两者都从基本上接近零的偏移误差开始，以便基本上立即解调所接收的信号。该设备还可以包括输出设备，用于输出从接收的基带信号解调的数据。

6. 发明申请

US20090180524A1 Device and method for fast transition from preamble synchronization to data demodulation in direct sequence spread spectrum (DSSS) communications 有权
标题翻译：用于从前同步码到直接序列扩频（DSSS）通信中的数据解调的快速转换的装置和方法
公开(公告)号：US20090180524A1
公开(公告)日：2009-07-16
申请号：US12013542
申请日：2008-01-14
申请人： Xinyu Wang , Marcus Gahler , Robert P. Higgins , Paul R. Norris
发明人： Xinyu Wang , Marcus Gahler , Robert P. Higgins , Paul R. Norris
IPC分类号： H04B1/707
CPC分类号： H04B1/7085 , H04B1/7075 , H04B1/7093
摘要： A device for fast transition from preamble synchronization of a received baseband signal to demodulation of the received baseband signal may include a baseband chip tracking loop to generate an offset tracking value to track any initial chip phase offset and Doppler-caused baseband chip frequency drift associated with the received baseband signal. The device may also include a numerical controlled oscillator to correct any Doppler-caused phase rotation associated with the received signal. The device may additionally include a preamble synchronization unit to detect a preamble of the received baseband signal, and to measure a chip phase offset and a baseband Doppler frequency shift associated with the received baseband signal. The chip phase offset may be used to set an initial chip phase offset value of the chip tracking loop so that the chip tracking loop starts with approximately a zero pull-in error. The baseband Doppler frequency shift may be used to set initial frequency offset values in the chip tracking loop and the numerical controlled oscillator so that both start with substantially near-zero offset errors for substantially immediate demodulation of the received signal. The device may further include an output device to output the data demodulated from the received baseband signal.
摘要翻译：用于从接收到的基带信号的前导码同步到接收的基带信号的解调的快速转换的装置可以包括基带芯片跟踪环路，用于产生偏移跟踪值，以跟踪任何初始的码片相位偏移和多普勒引起的基带芯片频率漂移接收的基带信号。该装置还可以包括数字控制振荡器，以校正与接收信号相关联的任何多普勒引起的相位旋转。该装置还可以包括前同步码单元，用于检测接收到的基带信号的前导码，并测量与接收的基带信号相关联的码片相位偏移和基带多普勒频移。芯片相位偏移可用于设置芯片跟踪回路的初始芯片相位偏移值，使得芯片跟踪回路以大致零拉入误差开始。基带多普勒频移可以用于设置芯片跟踪环路和数控振荡器中的初始频率偏移值，使得两者都从基本上接近零的偏移误差开始，以便基本上立即解调所接收的信号。该设备还可以包括输出设备，用于输出从接收的基带信号解调的数据。

7. 发明授权

US07831002B2 System, apparatus and method for synchronizing a spreading sequence transmitted during a plurality of time slots 有权
标题翻译：用于同步在多个时隙期间发送的扩展序列的系统，装置和方法
公开(公告)号：US07831002B2
公开(公告)日：2010-11-09
申请号：US11546877
申请日：2006-10-11
申请人： Yefim S. Poberezhskiy , Igor Elgorriaga , Xinyu Wang
发明人： Yefim S. Poberezhskiy , Igor Elgorriaga , Xinyu Wang
IPC分类号： H04L7/00
CPC分类号： H04B1/707 , H04W56/0085
摘要： A system for synchronizing a spreading sequence transmitted during a plurality of time slots includes a plurality of communication stations. Each communication station includes: (a) a control unit; (b) a spreading sequence unit for originating the spreading sequence; (c) at least one of a transmitter and a receiver; (d) at least one delay unit responding to the control unit for imparting a first delay to the spreading sequence presented to the transmitter unit and responding to the receiver unit for imparting a second delay to the spreading sequence presented to the receiver unit; and (e) a synchronizing sequence generator coupled with the transmitter unit. The synchronizing sequence unit in a first station presents a synchronizing sequence for transmission accompanying spread information transmitted during selected time slots. A receiver unit in a second station employs the synchronizing sequence in cooperation with the spreading sequence for despreading received spread information.
摘要翻译：用于同步在多个时隙期间发送的扩展序列的系统包括多个通信站。每个通信站包括：（a）控制单元; （b）用于发起扩展序列的扩展序列单元; （c）发射机和接收机中的至少一个; （d）响应于控制单元的至少一个延迟单元，用于对呈现给发射机单元的扩展序列赋予第一延迟，并响应于接收机单元，向呈现给接收机单元的扩展序列赋予第二延迟; 和（e）与所述发射机单元耦合的同步序列发生器。第一站中的同步序列单元呈现伴随在选定时隙期间传输的扩展信息的传输的同步序列。第二站中的接收机单元与扩频序列配合使用同步序列，用于解扩接收的扩展信息。

8. 发明申请

US20080319114A1 RGD POLYPEPTIDE GRAFTED POLY (GLYCOLIC ACID-L-LYSINE-L-LACTIC ACID) / BETA TRICALCIUM PHOSPHATE COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF 有权
标题翻译： RGD多肽接枝聚（甘油酸-L-赖氨酸-L-柠檬酸）/磷酸三钙复合材料及其制备方法
公开(公告)号：US20080319114A1
公开(公告)日：2008-12-25
申请号：US12170643
申请日：2008-07-10
申请人： Shipu Li , Yingchao Han , Yuhua Yan , Tao Wan , Xinyu Wang , Lin Yuan , Honglian Dai , Qiongjiao Yan
发明人： Shipu Li , Yingchao Han , Yuhua Yan , Tao Wan , Xinyu Wang , Lin Yuan , Honglian Dai , Qiongjiao Yan
IPC分类号： C08K3/32
CPC分类号： A61L27/46 , A61L27/18 , A61L27/227 , A61L27/54 , A61L2300/252 , A61L2430/32 , C07K14/75 , C07K14/78 , C08L67/04
摘要： An RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid)/β-tricalcium phosphate composite material is composed of β-tricalcium phosphate particles and RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) with mass ratio of 1:10-1:100, in which the β-tricalcium phosphate particles are uniformly dispersed in the RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) matrix. The preparation method includes that poly (glycolic acid-L-lysine-L-lactic acid) is polymerized with GRGDY short peptide (glycin-arginine-glycin-aspartic acid-tyrosine sequence) to obtain RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid), and then RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) is compounded with β-tricalcium phosphate particles. The composite material exhibits favorable biocompatibility, cellular affinity, biodegradability and mechanical behavior, and can avoid aseptic necrosis of tissues, which may be used as nerve guide or porous bone scaffold for repairing nerve tissue and bone tissue.
摘要翻译： RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸）/β-磷酸三钙复合材料由β-磷酸三钙颗粒和RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸），其中β-磷酸三钙颗粒均匀分散在RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸）基质中，质量比为1:10-1:100。制备方法包括聚（乙醇酸-L-赖氨酸-L-乳酸）与GRGDY短肽（甘氨酸 - 精氨酸 - 甘氨酸 - 天冬氨酸 - 酪氨酸序列）聚合，得到RGD多肽接枝的聚（乙醇酸-L-乳酸）赖氨酸-L-乳酸），然后将RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸）与β-磷酸三钙颗粒复合。复合材料表现出良好的生物相容性，细胞亲和力，生物降解性和机械性能，可以避免组织的无菌性坏死，可用作修复神经组织和骨组织的神经导管或多孔骨架。

9. 发明申请

US20080089394A1 System, apparatus and method for synchronizing a spreading sequence transmitted during a plurality of time slots 有权
标题翻译：用于同步在多个时隙期间发送的扩展序列的系统，装置和方法
公开(公告)号：US20080089394A1
公开(公告)日：2008-04-17
申请号：US11546877
申请日：2006-10-11
申请人： Yefim S. Poberezhskiy , Igor Elgorriage , Xinyu Wang
发明人： Yefim S. Poberezhskiy , Igor Elgorriage , Xinyu Wang
IPC分类号： H04B1/707
CPC分类号： H04B1/707 , H04W56/0085
摘要： A system for synchronizing a spreading sequence transmitted during a plurality of time slots includes a plurality of communication stations. Each communication station includes: (a) a control unit; (b) a spreading sequence unit for originating the spreading sequence; (c) at least one of a transmitter and a receiver; (d) at least one delay unit responding to the control unit for imparting a first delay to the spreading sequence presented to the transmitter unit and responding to the receiver unit for imparting a second delay to the spreading sequence presented to the receiver unit; and (e) a synchronizing sequence generator coupled with the transmitter unit. The synchronizing sequence unit in a first station presents a synchronizing sequence for transmission accompanying spread information transmitted during selected time slots. A receiver unit in a second station employs the synchronizing sequence in cooperation with the spreading sequence for despreading received spread information.
摘要翻译：用于同步在多个时隙期间发送的扩展序列的系统包括多个通信站。每个通信站包括：（a）控制单元; （b）用于发起扩展序列的扩展序列单元; （c）发射机和接收机中的至少一个; （d）响应于控制单元的至少一个延迟单元，用于对呈现给发射机单元的扩展序列赋予第一延迟，并响应于接收机单元，向呈现给接收机单元的扩展序列赋予第二延迟; 和（e）与所述发射机单元耦合的同步序列发生器。第一站中的同步序列单元呈现伴随在选定时隙期间传输的扩展信息的传输的同步序列。第二站中的接收机单元与扩频序列配合使用同步序列，用于解扩接收的扩展信息。

10. 发明授权

US07989532B2 RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) / β tricalcium phosphate composite material and preparation method thereof 有权
标题翻译： RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸）/ bgr; 磷酸三钙复合材料及其制备方法
公开(公告)号：US07989532B2
公开(公告)日：2011-08-02
申请号：US12170643
申请日：2008-07-10
申请人： Shipu Li , Yingchao Han , Yuhua Yan , Tao Wan , Xinyu Wang , Lin Yuan , Honglian Dai , Qiongjiao Yan
发明人： Shipu Li , Yingchao Han , Yuhua Yan , Tao Wan , Xinyu Wang , Lin Yuan , Honglian Dai , Qiongjiao Yan
IPC分类号： C08K3/32 , C08K3/10 , C08K3/22 , C07K1/04 , C08F283/00 , C08G63/48 , C08G63/91
CPC分类号： A61L27/46 , A61L27/18 , A61L27/227 , A61L27/54 , A61L2300/252 , A61L2430/32 , C07K14/75 , C07K14/78 , C08L67/04
摘要： An RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid)/β-tricalcium phosphate composite material is composed of β-tricalcium phosphate particles and RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) with mass ratio of 1:10-1:100, in which the β-tricalcium phosphate particles are uniformly dispersed in the RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) matrix. The preparation method includes that poly (glycolic acid-L-lysine-L-lactic acid) is polymerized with GRGDY short peptide (glycin-arginine-glycin-aspartic acid-tyrosine sequence) to obtain RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid), and then RGD polypeptide grafted poly (glycolic acid-L-lysine-L-lactic acid) is compounded with β-tricalcium phosphate particles. The composite material exhibits favorable biocompatibility, cellular affinity, biodegradability and mechanical behavior, and can avoid aseptic necrosis of tissues, which may be used as nerve guide or porous bone scaffold for repairing nerve tissue and bone tissue.
摘要翻译： RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸）/磷酸三钙复合材料由磷酸三钙颗粒和RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L- 乳酸），质量比为1：10-1：100，其中磷酸三钙颗粒均匀分散在RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸）基质中。制备方法包括聚（乙醇酸-L-赖氨酸-L-乳酸）与GRGDY短肽（甘氨酸 - 精氨酸 - 甘氨酸 - 天冬氨酸 - 酪氨酸序列）聚合，得到RGD多肽接枝的聚（乙醇酸-L-乳酸）赖氨酸-L-乳酸），然后将RGD多肽接枝的聚（乙醇酸-L-赖氨酸-L-乳酸）与磷酸二钙颗粒复合。复合材料表现出良好的生物相容性，细胞亲和力，生物降解性和机械性能，可以避免组织的无菌性坏死，可用作修复神经组织和骨组织的神经导管或多孔骨架。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式