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公开(公告)号：US08477592B2
公开(公告)日：2013-07-02
申请号：US10809538
申请日：2004-03-24
IPC分类号： H04J11/00
CPC分类号： H04L1/20 , H04L27/2647
摘要： Noise and interference can be independently measured in a multiple user Orthogonal Frequency Division Multiplexing (OFDM) system. Co-channel interference is measured in a frequency hopping, multiple user, OFDM system by tracking the sub-carriers assigned to all users in a particular service area or cell. The composite noise plus interference can be determined by measuring the amount of received power in a sub-carrier whenever it is not assigned to any user in the cell. A value is stored for each sub-carrier in the system and the value of noise plus interference can be a weighted average of the present value with previously stored values. The noise component can be independently determined in a synchronous system. In the synchronous system, all users in a system may periodically be prohibited from broadcasting over a sub-carrier and the received power in the sub-carrier measured during the period having no broadcasts.
摘要翻译： 噪声和干扰可以在多用户正交频分复用（OFDM）系统中独立测量。 通过跟踪分配给特定服务区域或小区中的所有用户的子载波，在跳频，多用户OFDM系统中测量同信道干扰。 复合噪声加干扰可以通过在子载波中没有分配给小区中的任何用户时测量子载波中的接收功率的量来确定。 为系统中的每个子载波存储一个值，并且噪声加干扰的值可以是具有先前存储的值的当前值的加权平均值。 噪声分量可以在同步系统中独立确定。 在同步系统中，系统中的所有用户可以周期地禁止通过子载波进行广播，并且在没有广播的时段期间测量的子载波中的接收功率。
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公开(公告)号：US08233555B2
公开(公告)日：2012-07-31
申请号：US11078176
申请日：2005-03-10
IPC分类号： H04L1/02
CPC分类号： H04B7/0671 , H04B7/0417 , H04B7/0632 , H04B7/0673 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0071 , H04L1/0618 , H04L25/0224 , H04L27/2602 , H04L27/2607 , H04L27/2631 , H04L27/2647 , H04W52/42
摘要： Methods and apparatuses that apply a time-varying delay to symbols to be transmitted from one or more antennas are provided. One such method may include providing a first symbol comprising a first plurality of samples to a first antenna. The first symbol is provided to a second antenna after a first delay period. A second symbol comprising a second plurality of samples is provided to the first antenna. The second symbol is provided to the second antenna after a second delay period that is different than the first delay period.
摘要翻译： 提供了对从一个或多个天线发送的符号应用时变延迟的方法和装置。 一种这样的方法可以包括向第一天线提供包括第一多个样本的第一符号。 第一符号在第一延迟周期之后被提供给第二天线。 包括第二多个样本的第二符号被提供给第一天线。 在与第一延迟周期不同的第二延迟周期之后，将第二符号提供给第二天线。
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公开(公告)号：US09100076B2
公开(公告)日：2015-08-04
申请号：US13550549
申请日：2012-07-16
CPC分类号： H04B7/0671 , H04B7/0417 , H04B7/0632 , H04B7/0673 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0071 , H04L1/0618 , H04L25/0224 , H04L27/2602 , H04L27/2607 , H04L27/2631 , H04L27/2647 , H04W52/42
摘要： Methods and apparatuses that apply a time-varying delay to symbols to be transmitted from one or more antennas are provided. In a first embodiment, first and second transmission orders for samples in first and second data symbols, respectively, are determined. First and second cyclic prefixes are appended to the beginnings of the first and second transmission orders, respectively. The first and second data symbols are then provided to the same antenna for transmissions beginning at different time slots in accordance with a delay diversity scheme. In a second embodiment, either the first data symbol or the second data symbol can be provided to different antennas for transmissions beginning at different time slots in accordance with a delay diversity scheme.
摘要翻译： 提供了对从一个或多个天线发送的符号应用时变延迟的方法和装置。 在第一实施例中，分别确定第一和第二数据符号中的采样的第一和第二传输顺序。 第一和第二循环前缀分别附加到第一和第二传输命令的开头。 然后根据延迟分集方案，将第一和第二数据符号提供给相同的天线，用于在不同时隙开始的传输。 在第二实施例中，根据延迟分集方案，可以将第一数据符号或第二数据符号提供给不同的天线以用于在不同时隙开始的传输。
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4.发明申请METHODS AND SYSTEMS FOR ADAPTIVE TRANSMISSION OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开无线通信系统中自适应传输控制信息的方法与系统公开(公告)号：US20090022178A1
公开(公告)日：2009-01-22
申请号：US12165644
申请日：2008-06-30
申请人： Tingfang Ji , Ayman Fawzy Naguib , Avneesh Agrawal
发明人： Tingfang Ji , Ayman Fawzy Naguib , Avneesh Agrawal
CPC分类号： H04W28/06 , H04L5/0053 , H04L5/0094 , H04L27/2602 , H04W72/1242 , H04W72/14
摘要： A method for adaptive transmission of control information in a wireless communication system may include generating a control segment carrying control information. The control segment may have a configurable size. The method may also include generating a pointer for the control segment. The pointer may indicate a location of the control segment in a downlink subframe. The pointer may also indicate a size of the control segment. The method may also include sending the pointer and the control segment.
摘要翻译： 无线通信系统中的控制信息的自适应传输方法可以包括生成携带控制信息的控制段。 控制段可以具有可配置的大小。 该方法还可以包括生成用于控制段的指针。 指针可以指示下行链路子帧中的控制段的位置。 指针也可以指示控制段的大小。 该方法还可以包括发送指针和控制段。
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公开(公告)号：US20120328045A1
公开(公告)日：2012-12-27
申请号：US13550549
申请日：2012-07-16
IPC分类号： H04L27/00
CPC分类号： H04B7/0671 , H04B7/0417 , H04B7/0632 , H04B7/0673 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0071 , H04L1/0618 , H04L25/0224 , H04L27/2602 , H04L27/2607 , H04L27/2631 , H04L27/2647 , H04W52/42
摘要： Methods and apparatuses that apply a time-varying delay to symbols to be transmitted from one or more antennas are provided.
摘要翻译： 提供了对从一个或多个天线发送的符号应用时变延迟的方法和装置。
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公开(公告)号：US08391196B2
公开(公告)日：2013-03-05
申请号：US11923761
申请日：2007-10-25
申请人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
发明人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
IPC分类号： G08C17/00
CPC分类号： H04W52/30 , H04L5/0007 , H04L5/0037 , H04L5/0058 , H04W52/04 , H04W72/06 , Y02B30/50
摘要： Systems and methodologies are described that facilitate mitigating effect of non-linear distortion from a power amplifier on a spectral mask margin. Power limit indications can be analyzed in scheduling mobile devices. Mobile devices with power limits can be scheduled on inner subbands. The power limits can be based at least in part on power amplifier headroom information. Other mobile devices can employ remaining portions of an allocated spectrum. Further, mobile devices can evaluate and establish a power amplifier backoff based upon the subband scheduling.
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7.发明申请SYSTEMS AND METHODS FOR BACK-OFF AND CLIPPING CONTROL IN WIRELESS COMMUNICATION SYSTEMS 审中-公开用于无线通信系统中的后退和剪辑控制的系统和方法公开(公告)号：US20080200204A1
公开(公告)日：2008-08-21
申请号：US12106960
申请日：2008-04-21
IPC分类号： H04B7/00
CPC分类号： H04L27/2624 , H04W52/34 , H04W52/42
摘要： Systems and methods for controlling transmission power are provided. The systems and methods vary the power of a signal provided to a power amplifier based upon the location of a frequency or frequencies of signals to be transmitted within the transmission frequency band, the location of a hop region within the transmission frequency band, the bandwidth of signals to be transmitted, or combinations of these approaches.
摘要翻译： 提供了用于控制传输功率的系统和方法。 系统和方法基于在发送频带内要发送的信号的频率或频率的位置，发送频带内的跳频区域的位置，发送频带内的跳频区域的位置， 要发送的信号，或这些方法的组合。
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公开(公告)号：US20080130589A1
公开(公告)日：2008-06-05
申请号：US11923761
申请日：2007-10-25
申请人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
发明人： Alexei Gorokhov , Mohammad J. Borran , Avneesh Agrawal , Naga Bhushan , Tamer Kadous , Ayman Fawzy Naguib
IPC分类号： H04J3/00
CPC分类号： H04W52/30 , H04L5/0007 , H04L5/0037 , H04L5/0058 , H04W52/04 , H04W72/06 , Y02B30/50
摘要： Systems and methodologies are described that facilitate mitigating effect of non-linear distortion from a power amplifier on a spectral mask margin. Power limit indications can be analyzed in scheduling mobile devices. Mobile devices with power limits can be scheduled on inner subbands. The power limits can be based at least in part on power amplifier headroom information. Other mobile devices can employ remaining portions of an allocated spectrum. Further, mobile devices can evaluate and establish a power amplifier backoff based upon the subband scheduling.
摘要翻译： 描述了有助于减轻来自功率放大器的非线性失真对光谱掩模余量的影响的系统和方法。 功率限制指示可以在调度移动设备中进行分析。 具有功率限制的移动设备可以在内部子带上进行调度。 功率限制可以至少部分地基于功率放大器余量信息。 其他移动设备可以使用所分配频谱的剩余部分。 此外，移动设备可以基于子带调度来评估和建立功率放大器的退避。
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公开(公告)号：US08498669B2
公开(公告)日：2013-07-30
申请号：US11398077
申请日：2006-04-04
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。
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公开(公告)号：US07012912B2
公开(公告)日：2006-03-14
申请号：US10809605
申请日：2004-03-24
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。
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