专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明授权

US08699367B1 Wireless LAN using transmission monitoring 有权
标题翻译：无线局域网使用传输监控
公开(公告)号：US08699367B1
公开(公告)日：2014-04-15
申请号：US13107850
申请日：2011-05-13
申请人： Jeffrey M. Gilbert , James Woo
发明人： Jeffrey M. Gilbert , James Woo
IPC分类号： H04L12/26
CPC分类号： H04W36/0083 , Y02D70/142
摘要： Transmission monitoring can be used to determine the optimum data rate for a channel. The transmission monitoring can include sending data packets in the channel using various data rates. At least some data packets are sent using the current optimum data rate, a rate lower than the current optimum data rate, and a rate higher than the current optimum data rate. One of these data rates can be selected as the new optimum data rate. In one embodiment, if the current optimum data rate is less than a predetermined data rate, then the client is triggered to begin scanning for other available access points.
摘要翻译：传输监控可用于确定通道的最佳数据速率。传输监视可以包括使用各种数据速率在信道中发送数据分组。使用当前最佳数据速率，比当前最佳数据速率低的速率以及高于当前最佳数据速率的速率来发送至少一些数据分组。可以选择这些数据速率之一作为新的最佳数据速率。在一个实施例中，如果当前最佳数据速率小于预定数据速率，则触发客户端开始扫描其他可用接入点。

62. 发明授权

US08599953B2 Multiple-input multiple-output system and method 有权
标题翻译：多输入多输出系统和方法
公开(公告)号：US08599953B2
公开(公告)日：2013-12-03
申请号：US13284803
申请日：2011-10-28
申请人： Qinfang Sun , Won-Joon Choi , Jeffrey M. Gilbert , Ardavan Maleki Tehrani
发明人： Qinfang Sun , Won-Joon Choi , Jeffrey M. Gilbert , Ardavan Maleki Tehrani
IPC分类号： H04B7/02 , H04L27/00
CPC分类号： H04B7/0421 , H04B7/0413 , H04B7/0613 , H04B7/0684 , H04L1/0041 , H04L1/0054 , H04L1/0061 , H04L1/06 , H04L1/0656 , H04L1/1819 , H04L1/1829 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L27/0014 , H04L2025/03426
摘要： A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may “stomp” on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.
摘要翻译：多输入多输出（MIMO）系统可以同时在多个天线上进行发射并同时在多个天线上进行接收。不幸的是，由于遗留802.11a / g设备不能解码多个数据流，所以这样的传统设备可能在完成MIMO分组的传输之前通过发送来“踩踏”MIMO分组。因此，本文提供MIMO系统和方法，以允许传统设备对MIMO分组的长度进行解码并且在该时间段内抑制发射。这些MIMO系统和方法被优化用于MIMO分组的有效传输。

63. 发明授权

US08184754B1 Spur mitigation techniques 有权
标题翻译：刺激减轻技术
公开(公告)号：US08184754B1
公开(公告)日：2012-05-22
申请号：US13081452
申请日：2011-04-06
申请人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
发明人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
IPC分类号： H04B1/00
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译：马刺在信号检测，放大器增益调整和信号解码方面造成重大问题。可以使用各种技术来减轻杂散对接收信号的影响。一般来说，这些技术通过取消或忽略杂散来工作。例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。维特比掩码可以基于支线和数据速率信息来确定子信道中的比特的加权。信道内插可以计算已知具有支路位置的子信道的伪信道估计，可以通过内插相邻的良好子信道的信道估计来计算。使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可以用于取消杂散。

64. 发明授权

US08014305B1 Wireless LAN using transmission monitoring 有权
标题翻译：无线局域网使用传输监控
公开(公告)号：US08014305B1
公开(公告)日：2011-09-06
申请号：US10139935
申请日：2002-05-06
申请人： Jeffrey M. Gilbert , James Woo
发明人： Jeffrey M. Gilbert , James Woo
IPC分类号： H04L12/26
CPC分类号： H04W36/0083 , Y02D70/142
摘要： Transmission monitoring can be used to determine the optimum data rate for a channel. The transmission monitoring can include sending data packets in the channel using various data rates. At least some data packets are sent using the current optimum data rate, a rate lower than the current optimum data rate, and a rate higher than the current optimum data rate. One of these data rates can be selected as the new optimum data rate. In one embodiment, if the current optimum data rate is less than a predetermined data rate, then the client is triggered to begin scanning for other available access points.
摘要翻译：传输监控可用于确定通道的最佳数据速率。传输监视可以包括使用各种数据速率在信道中发送数据分组。使用当前最佳数据速率，比当前最佳数据速率低的速率以及高于当前最佳数据速率的速率来发送至少一些数据分组。可以选择这些数据速率之一作为新的最佳数据速率。在一个实施例中，如果当前最佳数据速率小于预定数据速率，则触发客户端开始扫描其他可用接入点。

65. 发明授权

US07915909B2 RF integrated circuit test methodology and system 有权
标题翻译：射频集成电路测试方法和系统
公开(公告)号：US07915909B2
公开(公告)日：2011-03-29
申请号：US12059757
申请日：2008-03-31
申请人： Clifford J. Dunn , George Palmer , Jeffrey M. Gilbert
发明人： Clifford J. Dunn , George Palmer , Jeffrey M. Gilbert
IPC分类号： G01R31/00
CPC分类号： G01R31/2822
摘要： Over the air or radiated testing of an RF microelectronic or integrated circuit device under test (DUT) that has an integrated millimeter wave (mmw) antenna structure, is described. The antenna structure may have multiple elements in an array design that may be driven and/or sensed by integrated RF transmitter and/or receiver circuitry. An interface printed wiring board (e.g., a tester load board or a wafer probe card assembly) has formed in it a mmw radiation passage that is positioned to pass mmw radiation to and/or from the integrated antenna of the DUT. Test equipment may be conductively coupled to contact points of the interface board, to transmit and/or receive signals for testing of the DUT and/or provide dc power to the DUT. A test antenna is designed and positioned to receive and/or transmit mmw radiation through the passage, from and/or to the integrated DUT antenna. Other embodiments are also described and claimed.
摘要翻译：描述了具有集成毫米波（mmw）天线结构的RF微电子或被测试的集成电路器件（DUT）的空中或辐射测试（DUT）。天线结构可以具有可由集成RF发射器和/或接收器电路驱动和/或感测的阵列设计中的多个元件。接口印刷电路板（例如，测试仪负载板或晶片探针卡组件）中形成有一个mmw辐射通道，该辐射通道定位成通过与DUT的集成天线之间的辐射。测试设备可以导电耦合到接口板的接触点，以发射和/或接收用于测试DUT的信号和/或向DUT提供直流电力。测试天线被设计和定位成接收和/或传输穿过通道，从和/或到集成的DUT天线的mmw辐射。还描述和要求保护其他实施例。

66. 发明授权

US07835456B2 Spur mitigation techniques 有权
标题翻译：刺激减轻技术
公开(公告)号：US07835456B2
公开(公告)日：2010-11-16
申请号：US11952040
申请日：2007-12-06
申请人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
发明人： Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang , Xiaoru Zhang
IPC分类号： H04L27/28
CPC分类号： H04L25/0232 , H04L1/0045 , H04L27/2647
摘要： Spurs cause significant problems with signal detecting, amplifier gain adjustment, and signal decoding. Various techniques can be used to mitigate the effects of spurs on a received signal. Generally, these techniques work by either canceling or ignoring the spurs. For example, a pilot mask can be used to ignore pilot information in one or more sub-channels. A Viterbi mask can determine the weighting given to bits in a sub-channel based on spur and data rate information. Channel interpolation can compute a pseudo channel estimate for a sub-channel known to have a spur location can be computed by interpolating the channel estimates of adjacent good sub-channels. Filtering of the received signal using a low-pass filter, a growing box filter, or a low-pass filter with self-correlation can be used to cancel a spur.
摘要翻译：马刺在信号检测，放大器增益调整和信号解码方面造成重大问题。可以使用各种技术来减轻杂散对接收信号的影响。一般来说，这些技术通过取消或忽略杂散来工作。例如，可以使用导频掩码来忽略一个或多个子信道中的导频信息。维特比掩码可以基于支线和数据速率信息来确定子信道中的比特的加权。信道内插可以计算已知具有支路位置的子信道的伪信道估计，可以通过内插相邻的良好子信道的信道估计来计算。使用低通滤波器，增长盒滤波器或具有自相关的低通滤波器对接收信号进行滤波可以用于取消杂散。

67. 发明授权

US07672220B2 Apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals 有权
标题翻译：多天线接收机组合高数据率宽带分组化无线通信信号的装置和方法
公开(公告)号：US07672220B2
公开(公告)日：2010-03-02
申请号：US12043694
申请日：2008-03-06
申请人： Ardavan Maleki Tehrani , Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang
发明人： Ardavan Maleki Tehrani , Won-Joon Choi , Jeffrey M. Gilbert , Yi-Hsiu Wang
IPC分类号： H04L5/04
CPC分类号： H04L27/2657 , H04B7/0845 , H04B7/0848 , H04L27/2663 , H04L27/2665 , H04L27/2675
摘要： The present invention provides an apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals, where the apparatus includes M receive antennas, receiving M high data rate wideband packetized wireless communication signals, where each of the signals includes N frequency bins. The apparatus, in an exemplary embodiment, includes (1) a joint timing recovery units that perform joint coarse signal timing estimation, joint frequency offset estimation, and joint fine timing estimation on each of the signals, (2) M Fast Fourier Transform units (FFTs) that each convert the digital data for each of the M signals into frequency domain information for each of the N received frequencies and that output Q pilots for each of the signals, where Q is a positive integer, and (3) a combiner that weights and combines the outputs of the M FFTs for each of the N received frequencies.
摘要翻译：本发明提供了一种多天线接收机组合的高数据率宽带分组化无线通信信号的装置和方法，其中该装置包括M个接收天线，接收M个高数据速率宽带分组化无线通信信号，其中每个信号包括N个频率箱子。在一个示例性实施例中，该装置包括（1）联合定时恢复单元，其对每个信号执行联合粗略信号定时估计，联合频率偏移估计和联合精细定时估计，（2）M个快速傅里叶变换单元 FFT），其将每个M个信号的数字数据转换为N个接收频率中的每一个的频域信息，并且为每个信号输出Q个导频，其中Q是正整数，以及（3）组合器，对N个接收频率中的每一个进行加权并组合M FFT的输出。

68. 发明授权

US07616698B2 Multiple-input multiple output system and method 有权
标题翻译：多输入多输出系统及方法
公开(公告)号：US07616698B2
公开(公告)日：2009-11-10
申请号：US10981145
申请日：2004-11-03
申请人： Qinfang Sun , Won-Joon Choi , Jeffrey M. Gilbert , Ardavan Maleki Tehrani
发明人： Qinfang Sun , Won-Joon Choi , Jeffrey M. Gilbert , Ardavan Maleki Tehrani
IPC分类号： H04B7/02
CPC分类号： H04B7/0421 , H04B7/0413 , H04B7/0613 , H04B7/0684 , H04L1/0041 , H04L1/0054 , H04L1/0061 , H04L1/06 , H04L1/0656 , H04L1/1819 , H04L1/1829 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L27/0014 , H04L2025/03426
摘要： A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may “stomp” on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.
摘要翻译：多输入多输出（MIMO）系统可以同时在多个天线上进行发射并同时在多个天线上进行接收。不幸的是，由于遗留802.11a / g设备不能解码多个数据流，所以这样的传统设备可能在完成MIMO分组的传输之前通过发送来“踩踏”MIMO分组。因此，本文提供MIMO系统和方法，以允许传统设备对MIMO分组的长度进行解码并且在该时间段内抑制发射。这些MIMO系统和方法被优化用于MIMO分组的有效传输。

69. 发明授权

US07385914B2 Apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals 有权
标题翻译：高数据率宽带分组化无线通信信号的多天线发射机波束成形的装置和方法
公开(公告)号：US07385914B2
公开(公告)日：2008-06-10
申请号：US10682381
申请日：2003-10-08
申请人： Won-Joon Choi , Ardavan M. Tehrani , Jeffrey M. Gilbert , Samuel Ng
发明人： Won-Joon Choi , Ardavan M. Tehrani , Jeffrey M. Gilbert , Samuel Ng
IPC分类号： H04J11/00
CPC分类号： H04L27/2626 , H04B7/0617 , H04L25/0206 , H04L27/2608 , H04L27/2614
摘要： The present invention provides an apparatus and method of multiple antenna transmitter beamforming of high data rate wideband packetized wireless communication signals, where each of the signals comprises N frequencies, where N is a positive integer. The apparatus, in an exemplary embodiment, includes (1) a transmit beamformer that co-phases and weights the signals for each of the N frequencies across M antennas, thereby generating M co-phased and weighted frequency data and (2) M Inverse Fast Fourier Transform units (IFFTs) that convert the M co-phased and weighted frequency data into M digital outputs, and M transmit antennas transmitting the M co-phased and weighted signals, where M is an integer greater than or equal to 2.
摘要翻译：本发明提供了一种高数据速率宽带分组化无线通信信号的多天线发射机波束成形的装置和方法，其中每个信号包括N个频率，其中N是正整数。在示例性实施例中，该装置包括：（1）发射波束形成器，其对M个天线中的每个N个频率的信号进行共相并加权，由此产生M个同相和加权的频率数据;（2）M 将M个相位和加权频率数据转换为M个数字输出的傅里叶变换单元（IFFT），以及发射M个同相加权信号的M个发射天线，其中M是大于或等于2的整数。

70. 发明授权

US07123670B2 Fine frequency offset estimation and calculation and use to improve communication system performance 有权
公开(公告)号：US07123670B2
公开(公告)日：2006-10-17
申请号：US09963115
申请日：2001-09-24
申请人： Jeffrey M. Gilbert , Teresa H. Meng , John Thomson , Yi-Hsu Wang
发明人： Jeffrey M. Gilbert , Teresa H. Meng , John Thomson , Yi-Hsu Wang
IPC分类号： H04L27/06
CPC分类号： H04L25/022 , H04L25/023 , H04L25/063 , H04L27/266 , H04L27/2675
摘要： A method for correcting influence of frequency offset between a receiver and a transmitter by evaluating training symbols received during a preamble period. The method includes producing, based on at least one long training symbol, a first vector whose first vector angle is indicative of a fine offset between the receiver and the transmitter, producing a fine offset estimate based on the first vector angle, and multiplying, with a signal having a frequency based upon the fine offset estimate, data symbols that are received after the at least one long training symbol is received.

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