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1.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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公开(公告)号：US5499236A
公开(公告)日：1996-03-12
申请号：US291648
申请日：1994-08-16
申请人： Thomas R. Giallorenzi , Mark T. Rafter , Kenneth C. Greenwood , Harry B. Press , Samuel C. Kingston
发明人： Thomas R. Giallorenzi , Mark T. Rafter , Kenneth C. Greenwood , Harry B. Press , Samuel C. Kingston
IPC分类号： H04B1/7085 , H04B1/7103 , H04J3/06 , H04J13/00 , H04J14/00 , H04J13/02 , H04L7/00
CPC分类号： H04J13/00 , H04B1/7085 , H04B1/7103 , H04J3/0682 , H04B2201/709709 , H04J14/005
摘要： A multipoint-to-point CDMA communication system comprises a plurality of CDMA transmitting stations and a single CDMA receiving station, all of which are intercoupled to each other over one CDMA channel and one feedback channel. On the one CDMA channel, the plurality of CDMA transmitting stations simultaneously send respective CDMA signals to the receiving station. In the receiving station, respective time differences are measured between a reference clock signal and the spreading codes in the CDMA signals from each of the CDMA transmitting stations; and these time differences are indicated in respective error signals which the CDMA receiving station sends on the feedback channel to each of the CDMA transmitting stations. Each CDMA station responds to its error signals by time shifting its spreading code such that it arrives in the receiving station in synchronization with the reference clock signal. This synchronization enables interference between the spreading codes at the receiving station to be reduced by using codes which have minimal cross-correlation when their time difference is zero; and consequently, the maximum number of stations that can simultaneously transmit is increased.
摘要翻译： 多点对点CDMA通信系统包括多个CDMA发射站和单个CDMA接收站，它们都通过一个CDMA信道和一个反馈信道相互耦合。 在一个CDMA信道上，多个CDMA发送站同时向接收站发送各自的CDMA信号。 在接收站中，在来自每个CDMA发射站的CDMA信号中的参考时钟信号和扩展码之间测量各自的时间差; 并且这些时间差在CDMA接收站在反馈信道上向每个CDMA发射站发送的各个误差信号中指示。 每个CDMA站通过对其扩展码进行时移来响应其误差信号，使得它们与参考时钟信号同步地到达接收站。 该同步使得当它们的时间差为零时，通过使用具有最小互相关的代码来减少接收站处的扩展码之间的干扰; 因此，可以同时发送的站的最大数量增加。
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公开(公告)号：US5583853A
公开(公告)日：1996-12-10
申请号：US563876
申请日：1995-11-28
申请人： Thomas R. Giallorenzi , Mark T. Rafter , Kenneth C. Greenwood , Harry B. Press , Samuel C. Kingston
发明人： Thomas R. Giallorenzi , Mark T. Rafter , Kenneth C. Greenwood , Harry B. Press , Samuel C. Kingston
IPC分类号： H04B1/7085 , H04B1/7103 , H04J3/06 , H04J13/00 , H04J14/00 , H04J13/02 , H04L7/00
CPC分类号： H04J13/00 , H04B1/7085 , H04B1/7103 , H04J3/0682 , H04B2201/709709 , H04J14/005
摘要： A multipoint-to-point CDMA communication system comprises a plurality of CDMA transmitting stations and a single CDMA receiving station, all of which are intercoupled to each other over one CDMA channel and one feedback channel. On the one CDMA channel, the plurality of CDMA transmitting stations simultaneously send respective CDMA signals to the receiving station. In the receiving station, respective time differences are measured between a reference clock signal and the spreading codes in the CDMA signals from each of the CDMA transmitting stations; and these time differences are indicated in respective error signals which the CDMA receiving station sends on the feedback channel to each of the CDMA transmitting stations. Each CDMA station responds to its error signals by time shifting its spreading code such that it arrives in the receiving station in synchronization with the reference clock signal. This synchronization enables interference between the spreading codes at the receiving station to be reduced by using codes which have minimal cross-correlation when their time difference is zero; and consequently, the maximum number of stations that can simultaneously transmit is increased.
摘要翻译： 多点对点CDMA通信系统包括多个CDMA发射站和单个CDMA接收站，它们都通过一个CDMA信道和一个反馈信道相互耦合。 在一个CDMA信道上，多个CDMA发送站同时向接收站发送各自的CDMA信号。 在接收站中，在来自每个CDMA发射站的CDMA信号中的参考时钟信号和扩展码之间测量各自的时间差; 并且这些时间差在CDMA接收站在反馈信道上向每个CDMA发射站发送的各个误差信号中指示。 每个CDMA站通过对其扩展码进行时移来响应其误差信号，使得它们与参考时钟信号同步地到达接收站。 该同步使得当它们的时间差为零时，通过使用具有最小互相关的代码来减少接收站处的扩展码之间的干扰; 因此，可以同时发送的站的最大数量增加。
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4.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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5.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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6.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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9.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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