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1.发明授权公开(公告)号：US08358967B1
公开(公告)日：2013-01-22
申请号：US12325942
申请日：2008-12-01
IPC分类号： H04B7/15
CPC分类号： H04B7/18506 , H04B7/18504
摘要： The present invention relates to a towed wireless network communications subsystem for use in flight by a towing aircraft. The towed wireless network communications subsystem includes an aerodynamic enclosure having a tether attachment and configured to be towed by the towing aircraft. A directional antenna is disposed on the aerodynamic enclosure and is capable of forming one or more directional communications beams within a wireless network. A communications device is disposed in the aerodynamic enclosure and is coupled to the directional antenna(s). The communications device is configured to relay communications data between the towing aircraft and the wireless network.
摘要翻译： 牵引无线网络通信子系统技术领域本发明涉及一种由牵引飞机在飞行中使用的拖曳无线网络通信子系统。 牵引的无线网络通信子系统包括具有系绳附件并被构造成被牵引飞机牵引的空气动力学外壳。 定向天线设置在空气动力学外壳上，并且能够在无线网络内形成一个或多个定向通信波束。 通信设备设置在空气动力学外壳中并且耦合到定向天线。 通信设备被配置为中继牵引飞行器和无线网络之间的通信数据。
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2.发明授权公开(公告)号：US08073084B1
公开(公告)日：2011-12-06
申请号：US12691578
申请日：2010-01-21
IPC分类号： H03D1/00
CPC分类号： H04B1/7093 , H04B1/7075
摘要： An apparatus and method for correlating a signal over a correlation interval while accommodating spreading code frequency offset is described. In one embodiment, the apparatus includes a plurality of correlators, where each correlator forms a correlation result corresponding to a unique code frequency offset hypothesis. Each correlator selects samples from a tapped delay line at a tap position moved along the delay line at a rate corresponding to the correlator unique code frequency offset hypothesis.
摘要翻译： 描述了一种用于在适应扩展码频率偏移的同时在相关间隔上相关信号的装置和方法。 在一个实施例中，该装置包括多个相关器，其中每个相关器形成对应于唯一代码频率偏移假设的相关结果。 每个相关器以对应于相关器唯一代码频率偏移假设的速率沿着延迟线移动的抽头位置处的抽头延迟线选择样本。
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3.发明授权Method and apparatus for FDD and TDD terminal entry into a wireless communication network 有权用于FDD和TDD终端进入无线通信网络的方法和装置公开(公告)号：US07962161B1
公开(公告)日：2011-06-14
申请号：US11986578
申请日：2007-11-21
IPC分类号： H04W88/02
摘要： Entry of a terminal into a wireless communications network is facilitated for terminals which may operate in either frequency-division duplex or time-division duplex mode. Join request messages transmitted by the terminals include a duplex capability indicator defining a carrier frequency which can be used to response to the terminals.
摘要翻译： 对于可以在频分双工或时分双工模式下操作的终端，便于对终端进入无线通信网络。 由终端发送的加入请求消息包括定义可用于响应于终端的载波频率的双工能力指示符。
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公开(公告)号：US07944351B1
公开(公告)日：2011-05-17
申请号：US12350096
申请日：2009-01-07
IPC分类号： G08B1/08
CPC分类号： G08B25/016 , G08B25/014 , G08B29/28
摘要： An emergency locating system can include emergency transceivers and rescue transceivers. The emergency transceivers can be capable of repeat transmission of a distress message using a variable power level and variable spreading factor. A receive transceiver can be capable of receiving the distress messages and sending a confirmation message to the emergency transceiver. The emergency transceiver can be capable of receiving the confirmation message and terminating transmission of the distress message.
摘要翻译： 紧急定位系统可以包括应急收发器和救援收发器。 应急收发器能够使用可变功率电平和可变扩频因子重复发送遇险消息。 接收收发器能够接收遇险消息并向紧急收发机发送确认消息。 应急收发器能够接收确认消息并终止遇险消息的传输。
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公开(公告)号：US07558238B1
公开(公告)日：2009-07-07
申请号：US11335439
申请日：2006-01-18
IPC分类号： H04B7/216
CPC分类号： H04B7/2615 , H04B7/2618 , H04W74/02
摘要： A method for partitioning communication resource among multiple users partitions a portion of an available communication resource into a series of time-frequency slots, and allows multiple users to transmit in one of at least two available modes within a time-frequency slot. Preferably, one mode is time division of the time-frequency slot into time sub-slots, and another mode is code division of the time-frequency slot according to different spreading codes that spread an individual user's signal only within the subject time-frequency slot. Further details as to pilot signals, guard intervals, and payloads are described.
摘要翻译： 一种用于在多个用户中分配通信资源的方法将可用通信资源的一部分划分成一系列时隙，并且允许多个用户以时隙内的至少两种可用模式之一进行发送。 优选地，一种模式是时间 - 时隙到时间子时隙的时分，另一种模式是根据不同的扩展码对时间 - 时隙进行码分割，这些扩展码仅在主体时隙内扩展单个用户的信号 。 对导频信号，保护间隔和有效负载的进一步细节进行了说明。
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6.发明授权Adaptive power amplifier linearization in time division duplex communication systems 有权时分双工通信系统中的自适应功率放大器线性化公开(公告)号：US07529524B1
公开(公告)日：2009-05-05
申请号：US11259850
申请日：2005-10-26
IPC分类号： H04B1/04
CPC分类号： H03F1/3247 , H03F1/34 , H03F3/24 , H03F2200/204 , H03F2200/207 , H04B2001/0433
摘要： In an aspect of the invention, a method is performed in a transceiver for adaptive power amplifier linearization in time division duplex communication systems. The method comprises, in response to a first condition, performing, using a feedback signal generated by receiving subsystem circuitry, adaptive power amplifier linearization on a signal to be transmitted. The method additionally comprises, in response to a second condition, performing operations in order to determine receive data from a received radio frequency (RF) signal. The operations use at least the receiving subsystem circuitry. In a further aspect of the present invention, a transceiver is disclosed.
摘要翻译： 在本发明的一个方面，在用于时分双工通信系统中的自适应功率放大器线性化的收发器中执行一种方法。 该方法包括响应于第一条件，使用由接收子系统电路产生的反馈信号，对要发送的信号进行自适应功率放大器线性化。 该方法还包括响应于第二条件执行操作以便从接收到的射频（RF）信号确定接收数据。 该操作至少使用接收子系统电路。 在本发明的另一方面，公开了一种收发器。
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公开(公告)号：US07099372B2
公开(公告)日：2006-08-29
申请号：US10037422
申请日：2001-10-24
IPC分类号： H04B1/707
CPC分类号： H04B1/7097 , H01Q1/246 , H01Q21/205 , H04B1/707 , H04B2201/70703 , H04B2201/709709 , H04J13/0074 , H04L1/0003 , H04L1/0009 , H04W16/12
摘要： Disclosed is a method for operating a code division multiple access communications system, and a system that operates in accordance with the method. The method operates within a coverage area of a base station by assigning a set of spreading codes to individual ones of a plurality of subscriber stations and then, during transmissions within the cell, by periodically hopping amongst spreading code within the set of spreading codes such that at any given time no two subscriber stations operate with the same spreading code. The set of spreading codes may include the all one's spreading code. The step of periodically hopping preferably changes from a currently used spreading code to a next spreading code at a symbol rate or at a multiple of the symbol rate. The set of spreading codes may be a hopped sub-set of a larger set of spreading codes, and in this case the method further operates to assign a non-hopped sub-set of the larger set of spreading codes to individual ones of the plurality of subscriber stations for use on a system access channel and/or on a system control channel or, more generally, for use on a non-traffic channel. The system may be a fixed data rate system or a variable data rate system. In the latter case the step of periodically hopping may change from a currently used spreading code to a next spreading code at the symbol rate, or at a multiple of the symbol rate of the lowest or the highest symbol rate users.
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公开(公告)号：US06999446B2
公开(公告)日：2006-02-14
申请号：US10039514
申请日：2001-10-26
申请人： Eric K. Hall , Thomas R. Giallorenzi , Richard B. Ertel , Lee A. Butterfield , Dan M. Griffin , Philip L. Stephenson
发明人： Eric K. Hall , Thomas R. Giallorenzi , Richard B. Ertel , Lee A. Butterfield , Dan M. Griffin , Philip L. Stephenson
IPC分类号： H04J3/24
CPC分类号： H04W16/12 , H01Q1/246 , H01Q21/205 , H04B1/707 , H04B2201/70701 , H04B2201/70703 , H04B2201/709709 , H04J13/0074 , H04L1/0003 , H04L1/0009 , H04W16/02
摘要： A method is disclosed for operating a wireless communications system, such as a DS-CDMA communications system, by transmitting a waveform that includes a plurality of repeating frames each having x header training base symbols in a header training symbol field (TH) and y tail training base symbols in a tail training symbol field (TT). The frame is received and functions as one of a plurality of different types of frames depending on the content of at least TT. In the preferred embodiment the frame functions as one of a normal traffic frame, a termination frame, or a legacy frame providing backwards compatibility with another waveform. A given one of the frames includes four equal-size data fields separated by three equal-sized control fields, the header training symbol field (TH) and the tail training symbol field (TT).
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9.发明授权Fixed wireless loop system that ranks non-assigned PN codes to reduce interference 失效固定无线环路系统，排列未分配的PN码以减少干扰
公开(公告)号：US6023462A
公开(公告)日：2000-02-08
申请号：US988413
申请日：1997-12-10
CPC分类号： H04J13/16 , H04M1/72502 , H04W84/14
摘要： Disclosed is a method for operating a fixed wireless system (FWS) having a radio base unit (RBU) that uses a code division multiple access (CDMA) airlink for communicating with a plurality of subscriber units (SUs) within a coverage area of the RBU. The method includes establishing, from a set of pseudonoise (PN) spreading codes, a subset of PN spreading codes that are currently assigned to SUs and a subset of PN spreading codes that are currently not assigned to SUs. The method further ranks the PN spreading codes from the subset of non-assigned PN spreading codes by an amount of interference experienced by the use of each non-assigned PN spreading code, and assigns to an SU requiring a PN spreading code a PN spreading code from the set of non-assigned PN spreading codes that is ranked as having a least amount of interference. The step of ranking the non-assigned PN spreading codes is preferably performed periodically, and includes the steps of assigning, in turn, individual ones of the PN spreading codes from the set of non-assigned PN spreading codes to a correlator of the RBU, and determining an amount of noise output from the correlator resulting from the use of the PN spreading code.
摘要翻译： 公开了一种用于操作具有无线电基站单元（RBU）的固定无线系统（FWS）的方法，该无线电基站单元（RBU）使用码分多址（CDMA）空中链路来与RBU的覆盖区域内的多个用户单元（SU）进行通信 。 该方法包括从一组伪噪声（PN）扩展码建立当前分配给SU的PN扩展码的子集和当前未分配给SU的PN扩展码的子集。 该方法将PN扩展码从未分配的PN扩展码的子集排列为使用每个未分配的PN扩展码所经历的干扰量，并且分配给需要PN扩展码的PN扩频码 从被排列为具有最小干扰量的未分配PN扩展码的集合。 对未分配的PN扩展码进行排序的步骤优选地周期性地进行，并且包括以下步骤：将PN扩展码中的各个PN扩展码从所述一组未分配的PN扩展码分配给所述RBU的相关器， 以及确定从使用PN扩展码产生的相关器输出的噪声量。
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10.发明授权
公开(公告)号：US5619492A
公开(公告)日：1997-04-08
申请号：US491033
申请日：1995-06-16
CPC分类号： H04J13/16 , H04B7/264 , H04J3/1694 , H04J14/005
摘要： A CDMA communication system is provided in which bit rates are dynamically allocated by a single CDMA receiving station to a plurality of CDMA transmitting stations, all of which are intercoupled to each other over a CDMA channel and a feedback channel. Each CDMA transmitting station includes a control circuit which sends control signals on the CDMA channel in spaced apart time intervals which request respective bit rates on the CDMA channel; and, the CDMA receiving station includes a bit rate allocating circuit which receives and responds to the control signals by sending feedback messages over the feedback channel that address individual CDMA transmitting stations and grant respective bit rates to the addressed station. In one preferred embodiment, each transmitting station includes a data buffer which stores a time varying number of data bytes that are to be sent, and each transmitting station requests respective bit rates on the CDMA channel by including that number in the control signals.
摘要翻译： 提供了一种CDMA通信系统，其中单个CDMA接收站动态地将比特率分配给多个CDMA发射台，所有CDMA发射台都通过CDMA信道和反馈信道相互耦合。 每个CDMA发射台包括一个控制电路，该控制电路在CDMA信道上以间隔的时间间隔发送控制信号，这些时间间隔请求CDMA信道上的各个比特率; 并且，CDMA接收站包括比特率分配电路，其通过在寻址各个CDMA发射台的反馈信道上发送反馈消息来接收并响应控制信号，并向所寻址的站授予相应的比特率。 在一个优选实施例中，每个发送站包括一个数据缓冲器，存储要发送的数据字节的时变数，并且每个发送站通过在控制信号中包括该数目来在CDMA信道上请求相应的比特率。
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