专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

US08509324B2 Methods and systems for reducing PAPR of an OFDM signal 失效
标题翻译：减少OFDM信号PAPR的方法和系统
公开(公告)号：US08509324B2
公开(公告)日：2013-08-13
申请号：US12169625
申请日：2008-07-08
申请人： Je Woo Kim , Ayman Fawzy Naguib , Jong Hyeon Park , Tae Ryun Chang
发明人： Je Woo Kim , Ayman Fawzy Naguib , Jong Hyeon Park , Tae Ryun Chang
IPC分类号： H04K1/10
CPC分类号： H04L5/0007 , H04L27/2602 , H04L27/2614
摘要： Certain embodiments of the present disclosure provide a method and an apparatus for peak-to-average power ratio (PAPR) reduction of a transmission signal in a single carrier frequency division multiple access (SC-FDMA) system. The method may utilize a permutation of a time domain signal, and/or a permutation of a frequency domain signal or a permutation of a signal transformed by a unitary matrix. The apparatus may include an M-point DFT or some other M×M unitary matrix, N-point IDFT, interpolation and frequency conversion units, and a pair of possibly different permutation matrices of size M×M, where M can be less or equal than N.
摘要翻译：本公开的某些实施例提供了在单载波频分多址（SC-FDMA）系统中发送信号的峰均功率比（PAPR）降低的方法和装置。该方法可以利用时域信号的置换和/或频域信号的置换或由酉矩阵变换的信号的置换。该装置可以包括M点DFT或一些其他M×M酉矩阵，N点IDFT，内插和频率转换单元，以及大小为M×M的一对可能不同的置换矩阵，其中M可以小于或等于比N.

92. 发明授权

US08498669B2 Antenna array calibration for wireless communication systems 有权
标题翻译：无线通信系统的天线阵列校准
公开(公告)号：US08498669B2
公开(公告)日：2013-07-30
申请号：US11398077
申请日：2006-04-04
申请人： Ayman Fawzy Naguib , Avneesh Agrawal , Alexei Gorokhov
发明人： Ayman Fawzy Naguib , Avneesh Agrawal , Alexei Gorokhov
IPC分类号： G08B5/22
CPC分类号： H01Q3/267
摘要： Calibration for a transmit chain of a device transmitting information to multiple devices over wireless links and receive chains of the multiple devices receiving information over one of the wireless links utilizing a plurality of forward link channel estimates received from at least some of the plurality of devices and a plurality of reverse link channel estimates from the plurality of devices.
摘要翻译：用于通过无线链路向多个设备发送信息的设备的发送链的校准，以及利用从多个设备中的至少一些设备接收的多个前向链路信道估计，通过无线链路之一接收信息的多个设备的链接;以及来自多个设备的多个反向链路信道估计。

93. 发明申请

US20120179448A1 METHODS AND APPARATUSES FOR USE IN PROVIDING TRANSLATION INFORMATION SERVICES TO MOBILE STATIONS 有权
标题翻译：用于向移动站提供翻译信息服务的方法和装置
公开(公告)号：US20120179448A1
公开(公告)日：2012-07-12
申请号：US12986003
申请日：2011-01-06
申请人： Rajarshi Gupta , Ayman Fawzy Naguib
发明人： Rajarshi Gupta , Ayman Fawzy Naguib
IPC分类号： G06F17/28 , H04W4/02
CPC分类号： G06F17/289 , H04W4/029
摘要： Techniques are provided which may be implemented using various methods and/or apparatuses to allow a mobile station to request and receive translation information associated with a location (e.g., a region, a point of interest, etc.). The translation information may be based, at least in part, on historical information associated with at least one other request associated with the location and previously obtained from at least one other mobile station.
摘要翻译：提供了技术，其可以使用各种方法和/或设备来实现，以允许移动台请求和接收与位置（例如，区域，兴趣点等）相关联的翻译信息。翻译信息可以至少部分地基于与至少一个与该位置相关联并且从先前从至少一个其他移动站获得的其它请求相关联的历史信息。

94. 发明授权

US08045988B2 Softer and soft handoff in an orthogonal frequency division wireless communication system 有权
标题翻译：在正交频分无线通信系统中更软和更软切换
公开(公告)号：US08045988B2
公开(公告)日：2011-10-25
申请号：US12818078
申请日：2010-06-17
申请人： Arak Sutivong , Ayman Fawzy Naguib , Dhananjay Gore , Alexei Gorokhov , Tingfang Ji
发明人： Arak Sutivong , Ayman Fawzy Naguib , Dhananjay Gore , Alexei Gorokhov , Tingfang Ji
IPC分类号： H04W36/00
CPC分类号： H04B1/713 , H04B7/022 , H04B7/0491 , H04L5/0012 , H04L5/0023 , H04L5/0048 , H04L5/006 , H04L5/0069 , H04L25/0226 , H04L27/2613 , H04W36/18 , H04W48/08
摘要： Transmission patterns for pilot symbols transmitted from a mobile station or base station are provided. The patterns may be selected according to a location of the mobile station with respect to one or more antennas are provided. In some aspects, the pattern may be selected based upon the distance between the mobile station and the one or more antennas. In other aspect, the pattern may be based upon whether the mobile station is in handoff.
摘要翻译：提供从移动台或基站发送的导频符号的传输模式。可以根据移动台相对于一个或多个天线的位置来选择模式。在一些方面，可以基于移动台与一个或多个天线之间的距离来选择该模式。在另一方面，该模式可以基于移动台是否处于切换状态。

95. 发明申请

US20110019649A1 METHODS AND SYSTEMS FOR MOBILE STATION LOCATION DETERMINATION IN WIMAX 审中-公开
标题翻译： WIMAX移动站位置确定方法与系统
公开(公告)号：US20110019649A1
公开(公告)日：2011-01-27
申请号：US12688750
申请日：2010-01-15
申请人： Pranav Dayal , Ayman Fawzy Naguib
发明人： Pranav Dayal , Ayman Fawzy Naguib
IPC分类号： H04J3/00
CPC分类号： G01S5/10 , G01S5/12 , H04W64/003
摘要： Certain embodiments of the present disclosure provide techniques for determining and communicating the location of a mobile station within a wireless communication system.
摘要翻译：本公开的某些实施例提供了用于确定和传送移动站在无线通信系统内的位置的技术。

96. 发明申请

US20100008432A1 METHODS AND SYSTEMS FOR REDUCING PAPR OF AN OFDM SIGNAL 失效
标题翻译：减少OFDM信号PAPR的方法和系统
公开(公告)号：US20100008432A1
公开(公告)日：2010-01-14
申请号：US12169625
申请日：2008-07-08
申请人： Je Woo Kim , Ayman Fawzy Naguib , Jong Hyeon Park , Tae Ryun Chang
发明人： Je Woo Kim , Ayman Fawzy Naguib , Jong Hyeon Park , Tae Ryun Chang
IPC分类号： H04L27/28
CPC分类号： H04L5/0007 , H04L27/2602 , H04L27/2614
摘要： Certain embodiments of the present disclosure provide a method and an apparatus for peak-to-average power ratio (PAPR) reduction of a transmission signal in a single carrier frequency division multiple access (SC-FDMA) system. The method may utilize a permutation of a time domain signal, and/or a permutation of a frequency domain signal or a permutation of a signal transformed by a unitary matrix. The apparatus may include an M-point DFT or some other M×M unitary matrix, N-point IDFT, interpolation and frequency conversion units, and a pair of possibly different permutation matrices of size M×M, where M can be less or equal than N.
摘要翻译：本公开的某些实施例提供了在单载波频分多址（SC-FDMA）系统中发送信号的峰均功率比（PAPR）降低的方法和装置。该方法可以利用时域信号的置换和/或频域信号的置换或由酉矩阵变换的信号的置换。该装置可以包括M点DFT或一些其他MxM酉矩阵，N点IDFT，内插和频率转换单元，以及大小为M×M的一对可能不同的置换矩阵，其中M可以小于或等于N.

97. 发明申请

US20090124265A1 ENHANCED PILOT SIGNAL 有权
标题翻译：增强引航信号
公开(公告)号：US20090124265A1
公开(公告)日：2009-05-14
申请号：US12113900
申请日：2008-05-01
申请人： Peter John Black , Qiang Wu , Roberto Padovani , Wanlun Zhao , Yeliz Tokgoz , Ayman Fawzy Naguib , Pranav Dayal , Parag Arun Agashe , Naga Bhushan , Je Woo Kim
发明人： Peter John Black , Qiang Wu , Roberto Padovani , Wanlun Zhao , Yeliz Tokgoz , Ayman Fawzy Naguib , Pranav Dayal , Parag Arun Agashe , Naga Bhushan , Je Woo Kim
IPC分类号： H04W64/00
CPC分类号： H04W4/02 , H03M1/185 , H04L5/0023 , H04L5/0048 , H04L27/261 , H04L27/2613 , H04W16/02 , H04W64/00
摘要： Briefly, in accordance with one embodiment, a method of transmitting signals is provided. Signal waveforms are transmitted from at least two respective sectors. The at least two respective sectors are from at least two different sets of a superset of sectors. The transmitted signal waveforms include signal waveforms at least nearly mutually orthogonal at least along a particular signal dimension. An advantage of such an embodiment, for example, is reduced signal interference.
摘要翻译：简而言之，根据一个实施例，提供一种发送信号的方法。信号波形从至少两个相应的扇区发送。所述至少两个相应扇区是来自扇区的超集的至少两组不同的集合。发送的信号波形包括至少沿着特定信号维度至少几乎相互正交的信号波形。例如，这样的实施例的优点是减少了信号干扰。

98. 发明申请

US20080144738A1 BEAM SPACE TIME CODING AND TRANSMIT DIVERSITY 有权
标题翻译：光束空间时间编码和传输多样性
公开(公告)号：US20080144738A1
公开(公告)日：2008-06-19
申请号：US11684527
申请日：2007-03-09
申请人： Ayman Fawzy Naguib
发明人： Ayman Fawzy Naguib
IPC分类号： H04L27/00
CPC分类号： H04B7/0667 , H04B7/0617 , H04B7/0669 , H04B7/0671 , H04L1/0625
摘要： Methods and apparatus for increasing diversity gain at a receiver by applying beamforming to transmit diversity space-time coded signals. Transmit diversity can be provided at a signal source by space-time coding the signal. A transmit signal is space-time coded over a plurality of space-time antenna groups, with each space-time antenna group associated with a specific space-time code. The signal at each space-time antenna group is beamformed over the plurality of antenna in the space-time antenna group. Each of the plurality of antenna in a space-time antenna group is weighted with a distinct weight, relative to the other antenna in the space-time group. Each weight can have a distinct amplitude, phase, or combination of amplitude and phase. The weights can be static or dynamic. The dynamic weights can vary amplitude, phase, or a combination of amplitude and phase of each weight over time.
摘要翻译：通过应用波束形成来发射分集时空编码信号来增加接收机分集增益的方法和装置。可以通过对信号进行空时编码来在信号源处提供发射分集。发射信号在多个时空天线组上进行时空编码，每个时空天线组与特定时空码相关联。每个时空天线组中的信号在时空天线组中的多个天线上被波束形成。空时天线组中的多个天线中的每一个相对于时空组中的另一个天线以不同的权重加权。每个重量可以具有明显的振幅，相位或振幅和相位的组合。权重可以是静态或动态的。动态权重可以随着时间的推移改变每个权重的振幅，相位或振幅和相位的组合。

99. 发明授权

US07012912B2 Power control and scheduling in an OFDM system 有权
标题翻译： OFDM系统中的功率控制和调度
公开(公告)号：US07012912B2
公开(公告)日：2006-03-14
申请号：US10809605
申请日：2004-03-24
申请人： Ayman Fawzy Naguib , Avneesh Agrawal , Arak Sutivong
发明人： Ayman Fawzy Naguib , Avneesh Agrawal , Arak Sutivong
IPC分类号： H04J1/00
CPC分类号： H04W52/24 , H04L5/0007 , H04L5/0044 , H04L5/0058 , H04L5/006
摘要： A system and method for power control and scheduling of sub-carriers in an OFDM communication system. The receiver dynamic range can be minimized by a power control loop that attempts to maintain received power over a noise floor in a predetermined range. If the received power relative to a noise floor in allocated sub-carriers exceeds the predetermined range and the total received power is at the minimum, the scheduling system allocates an additional sub-carrier to the communication link. Additionally, if the received power relative to the noise floor is less than the predetermined range minimum, and the total received power is at a maximum, the scheduling system de-allocates a sub-carrier from the communication link. The scheduling system may also adjust an encoding rate to maintain a relatively constant symbol rate in each sub-carrier.
摘要翻译：一种用于OFDM通信系统中的子载波的功率控制和调度的系统和方法。可以通过功率控制环路来最小化接收器动态范围，该功率控制环路尝试在预定范围内的噪声基底上保持接收功率。如果所分配的子载波中相对于本底噪声的接收功率超过预定范围并且总接收功率处于最小，则调度系统向通信链路分配附加子载波。此外，如果相对于本底噪声的接收功率小于预定范围最小值，并且总接收功率处于最大值，则调度系统从通信链路去分配子载波。调度系统还可以调整编码速率以在每个子载波中维持相对恒定的符号率。

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