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. 发明授权

US08526358B2 System and method of doppler and local oscillator compensation in a TDMA system 失效
标题翻译： TDMA系统中的多普勒和本地振荡器补偿的系统和方法
公开(公告)号：US08526358B2
公开(公告)日：2013-09-03
申请号：US12690407
申请日：2010-01-20
申请人： Richard Booton , Clifford Hessel
发明人： Richard Booton , Clifford Hessel
IPC分类号： H04B7/212
CPC分类号： H04B7/2125 , H04B7/01 , H04B7/18513
摘要： System and method for determining an optimal transmission center frequency for a traffic station (30) in a satellite communication system (100) includes transmitting, by the traffic station (30) in a first uplink channel, a first burst of information in a first uplink TDMA frame to a satellite (10) and receiving, by the traffic station (30) in a first downlink channel, a downlink TDMA frame including a reference burst (210) and the first burst of information. A Doppler offset ratio is calculated based on a measured frequency shift of the received first burst of information. A local oscillator offset ratio is calculated based on a measured frequency shift of the reference burst and the Doppler offset ratio. An adjusted transmission frequency of a second uplink channel is calculated based on the Doppler offset ratio and the local oscillator offset ratio.
摘要翻译：用于确定卫星通信系统（100）中的业务站（30）的最佳传输中心频率的系统和方法包括由第一上行链路信道中的业务站（30）在第一上行链路中发送第一信息突发 TDMA帧到卫星（10）并且由第一下行链路信道中的业务站（30）接收包括参考突发（210）和第一信息突发的下行链路TDMA帧。基于接收到的第一信息突发的测量的频移来计算多普勒偏移比。基于参考突发和多普勒偏移比的测量频移来计算本地振荡器偏移比。基于多普勒偏移比和本地振荡器偏移比来计算第二上行链路信道的调整后的发送频率。

2. 发明申请

US20130223417A1 COMMUNICATION NETWORK FOR DETECTING UNCOOPERATIVE COMMUNICATIONS DEVICE AND RELATED METHODS 有权
标题翻译：用于检测非通信通信设备的通信网络及相关方法
公开(公告)号：US20130223417A1
公开(公告)日：2013-08-29
申请号：US13407964
申请日：2012-02-29
申请人： Paul E. VOGLEWEDE , Nick A. VAN STRALEN , William N. FURMAN , Clifford HESSEL , Fred C. KELLERMAN , James J. HOOD , Richard J. BUCKLEY , Dennis MARTINEZ
发明人： Paul E. VOGLEWEDE , Nick A. VAN STRALEN , William N. FURMAN , Clifford HESSEL , Fred C. KELLERMAN , James J. HOOD , Richard J. BUCKLEY , Dennis MARTINEZ
IPC分类号： H04W72/04 , H04B7/04
CPC分类号： H04W72/0446 , G01S5/0294 , G01S5/06 , H04B7/04 , H04W4/00 , H04W64/006 , H04W84/045 , H04W88/04
摘要： A communication network may be uncooperative with an uncooperative communications device. The communication network includes mobile wireless communications devices including a collection device and forward devices. Each forward device is configured to detect a received signal characteristic associated with the uncooperative communications device, and transmit the received signal characteristic to the collection device. The collection device is configured to selectively schedule reception of the received signal characteristic based upon a timing of communications among the forward devices, and determine a parameter associated with the uncooperative communications device based upon the received signal characteristic.
摘要翻译：通信网络可能与不合作的通信设备不协调。通信网络包括移动无线通信设备，包括收集设备和转发设备。每个正向设备被配置为检测与不协调通信设备相关联的接收信号特性，并将接收的信号特性发送到收集设备。收集装置被配置为基于正向设备之间的通信的定时来选择性地调度接收到的接收信号特性，并且基于接收的信号特性来确定与不合作的通信设备相关联的参数。

3. 发明申请

US20110176479A1 SYSTEM AND METHOD OF DOPPLER AND LOCAL OSCILLATOR COMPENSATION IN A TDMA SYSTEM 失效
标题翻译： TDMA系统中多普勒和局部振荡器补偿的系统与方法
公开(公告)号：US20110176479A1
公开(公告)日：2011-07-21
申请号：US12690407
申请日：2010-01-20
申请人： Richard Booton , Clifford Hessel
发明人： Richard Booton , Clifford Hessel
IPC分类号： H04B7/212
CPC分类号： H04B7/2125 , H04B7/01 , H04B7/18513
摘要： System and method for determining an optimal transmission center frequency for a traffic station (30) in a satellite communication system (100) includes transmitting, by the traffic station (30) in a first uplink channel, a first burst of information in a first uplink TDMA frame to a satellite (10) and receiving, by the traffic station (30) in a first downlink channel, a downlink TDMA frame including a reference burst (210) and the first burst of information. A Doppler offset ratio is calculated based on a measured frequency shift of the received first burst of information. A local oscillator offset ratio is calculated based on a measured frequency shift of the reference burst and the Doppler offset ratio. An adjusted transmission frequency of a second uplink channel is calculated based on the Doppler offset ratio and the local oscillator offset ratio.
摘要翻译：用于确定卫星通信系统（100）中的业务站（30）的最佳传输中心频率的系统和方法包括由第一上行链路信道中的业务站（30）在第一上行链路中发送第一信息突发 TDMA帧到卫星（10）并且由第一下行链路信道中的业务站（30）接收包括参考突发（210）和第一信息突发的下行链路TDMA帧。基于接收到的第一信息突发的测量的频移来计算多普勒偏移比。基于参考突发和多普勒偏移比的测量频移来计算本地振荡器偏移比。基于多普勒偏移比和本地振荡器偏移比来计算第二上行链路信道的调整后的发送频率。

4. 发明授权

US07577116B2 Timeslot assignment mechanism for satellite communication network 失效
标题翻译：卫星通信网络时隙分配机制
公开(公告)号：US07577116B2
公开(公告)日：2009-08-18
申请号：US11550023
申请日：2006-10-17
申请人： James A. Norris , Gerald Saeva , Thomas Kenney , Kenneth Arndt , Kenneth Symons , Clifford Hessel
发明人： James A. Norris , Gerald Saeva , Thomas Kenney , Kenneth Arndt , Kenneth Symons , Clifford Hessel
IPC分类号： H04B7/212 , H04J3/00
CPC分类号： H04B7/212
摘要： A time division multiple access (TDMA) waveform for controlling a MIL-STD-188-183 compliant demand assignment multiple access (DAMA) satellite communication network contains a short duration and minimal data content, time-hack, that is repeatedly transmitted by a supervisory control radio, so that the time hack occurs twice within a DAMA frame, ensuring that every radio can acquire frame synchronization, irrespective of overlap in receipt of one of the time-hacks with a voice/data channel transmission by that radio. The time-hack also identifies which one among a list of different frame formats stored in the radio is to be employed.
摘要翻译：用于控制符合MIL-STD-188-183标准的需求分配多址（DAMA）卫星通信网络的时分多址（TDMA）波形包含由监视器重复发送的短时间和最小数据内容，最小数据内容控制无线电，使得在DAMA帧内发生两次时间攻击，确保每个无线电可以获取帧同步，而不管该收音机通过语音/数据信道传输来收到一个时间间隔的重叠。时间黑客还识别要使用存储在无线电中的不同帧格式的列表中的哪一个。

5. 发明授权

US07460618B2 System and method for obtaining accurate symbol rate and carrier phase, frequency, and timing acquisition for minimum shift keyed waveform 失效
标题翻译：用于获得最小移动键控波形的精确符号速率和载波相位，频率和定时采集的系统和方法
公开(公告)号：US07460618B2
公开(公告)日：2008-12-02
申请号：US11594734
申请日：2006-11-09
申请人： James A. Norris , Clifford Hessel
发明人： James A. Norris , Clifford Hessel
IPC分类号： H03D1/00 , H04L27/14
CPC分类号： H04L27/18 , H04L2027/0095
摘要： The present invention relates generally to communication systems, both wired and wireless, employing a continuous phase modulation (“CPM”) waveform with a minimum shift keying (“MSK”) preamble. The present inventive system and method uses information from contiguous Fourier Transforms taken on contiguous data blocks to determine baud rate, phase, frequency offset, and bit timing of the CPM waveform or can be used to determine the frequency of continuous wave waveform. More particularly, the inventive system and method is applicable to the military satellite communications UHF frequency band for deciding whether a signal of interest is.
摘要翻译：本发明一般涉及有线和无线的通信系统，其采用具有最小移位键控（“MSK”）前导码的连续相位调制（“CPM”）波形。本发明的系统和方法使用来自连续数据块的连续傅里叶变换的信息来确定CPM波形的波特率，相位，频率偏移和比特定时，或者可以用于确定连续波形波形的频率。更具体地，本发明的系统和方法适用于军事卫星通信UHF频带，用于确定感兴趣的信号是否是。

6. 发明申请

US20070053459A1 System and method for obtaining accurate symbol rate and carrier phase, frequency, and timing acquisition for minimum shift keyed waveform 失效
公开(公告)号：US20070053459A1
公开(公告)日：2007-03-08
申请号：US11594734
申请日：2006-11-09
申请人： James Norris , Clifford Hessel
发明人： James Norris , Clifford Hessel
IPC分类号： H04K1/10 , H04L27/00
CPC分类号： H04L27/18 , H04L2027/0095
摘要： The present invention relates generally to communication systems, both wired and wireless, employing a continuous phase modulation (“CPM”) waveform with a minimum shift keying (“MSK”) preamble. The present inventive system and method uses information from contiguous Fourier Transforms taken on contiguous data blocks to determine baud rate, phase, frequency offset, and bit timing of the CPM waveform or can be used to determine the frequency of continuous wave waveform. More particularly, the inventive system and method is applicable to the military satellite communications UHF frequency band for deciding whether a signal of interest is.

7. 发明授权

US07031382B2 Non-linear equalizer system and method 有权
公开(公告)号：US07031382B2
公开(公告)日：2006-04-18
申请号：US09983110
申请日：2001-10-23
申请人： Clifford Hessel , James A. Norris
发明人： Clifford Hessel , James A. Norris
IPC分类号： H03H7/40 , H03D3/22
CPC分类号： H04L27/2332 , H04L2027/0067
摘要： A system and method for compensating for angular distortion of a received waveform is disclosed. One embodiment measures the angular position of a current symbol, the preceding symbol and the succeeding symbol, calculates the phase shift between the current symbol and a preceding symbol and the phase shift between the current symbol and a succeeding symbol, uses the phase shifts to enter a 2-D lookup table to extract a phase correction factor, then uses the phase correction factor to modify the angular position of the current symbol.

8. 发明授权

US06389078B1 Configurable circuits for field programmable radio frequency communications equipment and methods therefor 有权
标题翻译：用于现场可编程射频通信设备的可配置电路及其方法
公开(公告)号：US06389078B1
公开(公告)日：2002-05-14
申请号：US09184940
申请日：1998-11-03
申请人： Clifford Hessel , Michael E. Kreeger , Christopher D. Mackey
发明人： Clifford Hessel , Michael E. Kreeger , Christopher D. Mackey
IPC分类号： H04L2700
CPC分类号： H04L27/3416 , H03G3/345 , H03M13/256 , H03M13/3961 , H03M13/41 , H03M13/4123 , H03M13/6325 , H03M13/6502 , H03M13/6508 , H03M13/6569 , H04B1/00 , H04B1/0003 , H04B1/0007 , H04B1/28 , H04B1/40 , H04B1/406 , H04L1/0001 , H04L1/0054 , H04L1/006 , H04L1/18 , H04L25/497 , H04L27/0008 , H04L27/183 , H04L2027/003 , H04L2027/0065
摘要： A system and method for providing a configurable signal processing circuit for a field configurable radio frequency communication system that is adaptable to be configured to function with a variety of signaling schemes or waveforms, and including an intermediate frequency (IF) digital signal processing circuit. A “tool box” of configurable signal processing circuits is available for processing multi-bit digital signals into and out of the IF circuit. Control registers receive digital instructions to select, interconnect and configure various circuits from the tool box to provide added signal processing for the selected the transmitter or receiver mode of operation as a function of the selected signaling scheme.
摘要翻译：一种用于为现场可配置射频通信系统提供可配置信号处理电路的系统和方法，其适于被配置为利用各种信令方案或波形进行功能，并且包括中频（IF）数字信号处理电路。可配置信号处理电路的“工具箱”可用于处理多位数字信号进出IF电路。控制寄存器接收数字指令以从工具箱中选择，互连和配置各种电路，以根据所选择的信令方案为选定的发射机或接收机操作模式提供附加的信号处理。

9. 发明授权

US09066320B2 Method to bootstrap into a frequency agile ad hoc network of radios that use a non-deterministic frequency pattern 有权
标题翻译：引导到使用非确定性频率模式的无线电频率敏捷ad hoc网络的方法
公开(公告)号：US09066320B2
公开(公告)日：2015-06-23
申请号：US13367418
申请日：2012-02-07
申请人： Nick A. Van Stralen , Clifford Hessel
发明人： Nick A. Van Stralen , Clifford Hessel
IPC分类号： H04W72/02 , H04W84/18 , H04W72/08
CPC分类号： H04W72/02 , H04W72/082 , H04W84/18
摘要： A method to facilitate late entry of a late entrant node into an ad-hoc radio network involves accessing from a memory at the late entrant node an initial frequency hopping sequence for the ad-hoc radio network. The late entrant node uses at least the initial frequency hopping sequence to determine a first frequency to monitor during a communication epoch corresponding to one of the frequency hops. The late entrant node thereafter monitors the first frequency to detect the presence of a beacon signal transmitted by a participating node of the network. Subsequently, the late entrant node determines a second frequency included in the current hopping sequence of the network based on information contained in the beacon signal.
摘要翻译：一种促进晚期进入节点进入到自组织无线电网络的方法包括从晚期进入节点的存储器访问用于自组织无线电网络的初始跳频序列。后期入口节点至少使用初始跳频序列来确定在对应于跳频之一的通信时段期间监视的第一频率。后来的入口节点此后监视第一频率以检测由网络的参与节点发送的信标信号的存在。随后，后期进入节点根据包含在信标信号中的信息确定包括在网络的当前跳频序列中的第二频率。

10. 发明授权

US09054901B2 Simplified blind signal detector 有权
标题翻译：简化盲信号检测器
公开(公告)号：US09054901B2
公开(公告)日：2015-06-09
申请号：US13413805
申请日：2012-03-07
申请人： Clifford Hessel
发明人： Clifford Hessel
IPC分类号： H04B15/00 , H04B1/38 , H04B1/40 , H04B1/46 , H04L27/00 , H04W16/14
CPC分类号： H04L27/0006 , H04L27/0012 , H04W16/14
摘要： A method for detecting a presence of an RF signal begins by forming with at least one computer processor a sample correlation matrix A from a sample of a radio frequency channel. Thereafter, the at least one computer processor determines a trace tr(A) of the sample correlation matrix and a determinant det(A) of the sample correlation matrix. The at least one processor then selectively determines a presence or absence of a signal on the radio frequency channel based exclusively on the trace, the determinant and a threshold value T. The invention also includes a cognitive radio which includes a radio receiver configured to detect an RF signal and at least one computer processing device for performing the above-described method.
摘要翻译：用于检测RF信号的存在的方法开始于与至少一个计算机处理器一起形成来自射频信道的样本的样本相关矩阵A. 此后，至少一个计算机处理器确定采样相关矩阵的迹线tr（A）和样本相关矩阵的行列式det（A）。然后至少一个处理器选择性地基于迹线，行列式和阈值T来确定射频信道上的信号的存在或不存在。本发明还包括认知无线电设备，其包括被配置为检测 RF信号和用于执行上述方法的至少一个计算机处理装置。

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