公开(公告)号：US06415162B1

公开(公告)日：2002-07-02

申请号：US08728754

申请日：1996-10-11

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B138

CPC分类号： H04W16/12 ,  H01Q1/246 ,  H01Q25/00 ,  H04W16/02 ,  H04W16/24 ,  H04W16/28 ,  Y02D70/00 ,  Y02D70/1222

摘要： A method and apparatus for improving the reception characteristics for lower-power portable telephone units at a base station site is disclosed. A normal three-sector antenna site is divided into a plurality of sectors each having a central line of focus. The frequency channels assigned to the base station site are divided among the sectors, and an antenna within each sector radiates the assigned frequencies along the central line of focus for each of the sectors.

摘要翻译： 公开了一种用于在基站站点改善低功率便携式电话机的接收特性的方法和装置。 正常的三扇区天线位置被分成多个扇区，每个扇区具有中心焦点焦点。 分配给基站站点的频率信道在扇区之间分配，并且每个扇区内的天线沿着每个扇区的中心焦点对准辐射分配的频率。

公开(公告)号：US06411655B1

公开(公告)日：2002-06-25

申请号：US09216466

申请日：1998-12-18

申请人： Alan R. Holden ,  Paul W. Dent ,  William O. Camp, Jr.

发明人： Alan R. Holden ,  Paul W. Dent ,  William O. Camp, Jr.

IPC分类号： H03C100

CPC分类号： H04L27/361

摘要： A stream of complex numbers is converted into polar form, including an amplitude-representative part and a phase-representative part. The amplitude-representative part of each of the converted complex numbers is represented as a plurality of digits of decreasing numerical significance. The phase-representative part of each of the converted complex numbers is phase-modulated at the radio carrier frequency to produce a phase-modulated drive signal. The phase-modulated drive signal is amplified in a plurality of power amplifiers. A respective one of the power amplifiers provides a maximum output power level at a respective amplifier output that is related to a respective one of the decreasing numerical significance. The output amplitude of a respective one of the plurality of power amplifiers is controlled by applying a respective one of the plurality of digits of decreasing numerical significance to a respective one of the plurality of power amplifiers. The amplifier outputs of the plurality of power amplifiers are combined to form the modulated radio power signal.

摘要翻译： 复数流被转换成极性形式，包括振幅代表部分和相位代表部分。 每个转换的复数的振幅代表部分被表示为具有递减数值意义的多个数字。 每个转换的复数的相位代表部分在无线电载波频率下进行相位调制，以产生相位调制的驱动信号。 相位调制驱动信号在多个功率放大器中被放大。 功率放大器中的相应功率放大器在相应的放大器输出端提供与减小的数值含义中的相应的一个有关的最大输出功率电平。 多个功率放大器中的相应一个功率放大器的输出振幅通过将多个数字有效值的多个数字中的相应一个应用于多个功率放大器中的相应一个来控制。 多个功率放大器的放大器输出被组合以形成调制无线电功率信号。

公开(公告)号：US06400926B1

公开(公告)日：2002-06-04

申请号：US08263835

申请日：1994-06-22

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B7185

CPC分类号： H04B7/195

摘要： A radiocommunication system and method using a combination of a geostationary (GEO) and a plurality of medium earth orbit (MEO) satellites are disclosed. First, a GEO satellite is launched to provide initial system capacity. Next, MEO satellites are successively launched into positions where they can supplement the coverage of the GEO satellite during peak traffic hours. Finally, when a sufficient number of MEO satellites are in place, the GEO satellite can provide the supplementary capacity.

摘要翻译： 公开了使用地球静止（GEO）和多个中等地球轨道（MEO）卫星的组合的无线电通信系统和方法。 首先，发射一颗GEO卫星提供初始系统容量。 接下来，MEO卫星陆续发射到高峰时段可以补充GEO卫星覆盖的位置。 最后，当有足够数量的MEO卫星到位时，GEO卫星可以提供补充能力。

公开(公告)号：US06377558B1

公开(公告)日：2002-04-23

申请号：US09055490

申请日：1998-04-06

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B7212

CPC分类号： H01Q3/40 ,  H01Q21/061 ,  H01Q25/00

摘要： A transmitter is provided for simultaneously transmitting a plurality of signals in a plurality of directive beams to corresponding destination stations, each destination station located in a separate fan within a service area. The transmitter includes a plurality of beamformers, each beamformer receiving one of the signals to be transmitted to an associated fan, each of the beamformers having a plurality of outputs for each different signal to be transmitted. A plurality of Butler matrices each receive one of the plurality of outputs from the plurality of beamformers for each different signal to be transmitted, each Butler matrix having a plurality of outputs in phased relationship to one another, wherein each of the signals to be transmitted is simultaneously provided across the outputs of each Butler matrix in a phased relationship. An antenna is provided with an aperture within which a two-dimensional array of antenna elements are disposed, wherein equal fractions of adjacent antenna elements are connected to the outputs of each Butler matrix, and wherein each of the plurality of signals are simultaneously transmitted by the entire two-dimensional array of antenna elements. Each of the plurality of beamformers receives steering control signals for steering the direction of each beam within its respective fan.

摘要翻译： 提供发射机用于同时将多个指向波束中的多个信号发送到对应的目的地站，每个目的地站位于服务区域内的单独的风扇中。 发射机包括多个波束形成器，每个波束形成器接收要传输到相关联的风扇的信号之一，每个波束形成器具有用于每个不同信号的多个输出。 多个巴特勒矩阵每个接收来自多个波束形成器的多个波束形成器中的一个，用于要发送的每个不同信号，每个巴特勒矩阵具有彼此定相关系的多个输出，其中要被发送的每个信号是 同时在分阶段的关系中跨越每个巴特勒矩阵的输出。 天线设置有孔，其中设置有天线元件的二维阵列，其中相邻天线元件的相等部分连接到每个巴特勒矩阵的输出，并且其中多个信号中的每一个同时由 整个天线元素的二维阵列。 多个波束形成器中的每一个接收转向控制信号，用于转向其各自风扇内的每个波束的方向。

公开(公告)号：US06195555B1

公开(公告)日：2001-02-27

申请号：US08881253

申请日：1997-06-24

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04Q720

CPC分类号： H04W88/06 ,  H04B7/18545 ,  H04B7/1855 ,  H04B7/18563 ,  H04W8/10 ,  H04W68/00 ,  H04W68/02 ,  H04W68/12

摘要： A method of directing a call to a mobile telephone in a dual mode cellular satellite communications network is disclosed. An alert signal is transmitted to the mobile telephone using base stations of the cellular network if the mobile telephone is currently registered as active in a cellular network. When the alert signal is received at the mobile telephone, the mobile telephone transmits a response to the cellular network as an acknowledgement. When an acknowledgement is not received by the cellular network within a defined period of time, the cellular network transmits the last known location of the mobile telephone to the satellite earth station. Upon receipt of the last known location of the mobile telephone, the satellite earth station using the last known location determines a satellite antenna beam most likely to be received by the mobile telephone and transmits an alert signal to the mobile telephone via the satellite using the antenna beam.

摘要翻译： 公开了一种在双模蜂窝卫星通信网络中将呼叫引导到移动电话的方法。 如果移动电话当前在蜂窝网络中被注册为活动，则使用蜂窝网络的基站将警报信号发送到移动电话。 当在移动电话处接收到警报信号时，移动电话作为确认发送对蜂窝网络的响应。 当蜂窝网络在定义的时间段内没有接收到确认时，蜂窝网络将移动电话的最后已知位置发送到卫星地球站。 在接收到移动电话的最后一个已知位置后，使用最后一个已知位置的卫星地球站确定最有可能由移动电话接收的卫星天线波束，并使用天线通过卫星向移动电话发送警报信号 光束。

公开(公告)号：US6157811A

公开(公告)日：2000-12-05

申请号：US602707

申请日：1996-02-16

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H01Q1/28 ,  H01Q25/00 ,  H04B7/185 ,  H04B7/204

CPC分类号： H04B7/18515 ,  H01Q1/288 ,  H01Q25/00 ,  H01Q25/007 ,  H04B7/18543 ,  H04B7/2046

摘要： Radiocommunication systems and methods for minimizing co-channel interference are disclosed. The systems and methods are applicable to, for example, landmobile communications, satellite communication systems and hybrids thereof. Signal processing using matrix models of received and transmitted signals provides for minimized interference.

摘要翻译： 公开了用于最小化同信道干扰的无线电通信系统和方法。 该系统和方法适用于例如陆上通信，卫星通信系统及其混合动力。 使用接收和发射信号的矩阵模型的信号处理提供了最小化的干扰。

公开(公告)号：US6112094A

公开(公告)日：2000-08-29

申请号：US55262

申请日：1998-04-06

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B1/713 ,  H04B1/7143 ,  H04B1/715 ,  H04B7/26 ,  H04J13/00 ,  H04W16/02 ,  H04W16/12 ,  H04Q7/20

CPC分类号： H04W16/12 ,  H04B1/713 ,  H04B1/7143 ,  H04B7/2621 ,  H04J13/00 ,  H04W16/02 ,  H04B2001/7154

摘要： Frequency hopping techniques which provide greater interference averaging are described. Cells having the same hopping sequence select sequence offsets pseudo-randomly in a manner which ensures that stations within cells select different channel frequencies, but also that as between such cells, interferers change between hops. This can be accomplished by, for example, providing each station with a unique identifier that can be used in conjunction with a pseudo-random number to select from the set of hopping sequences assigned to the cell.

摘要翻译： 描述了提供更大干扰平均的跳频技术。 具有相同跳频序列的小区选择序列以确保小区内的站选择不同信道频率的方式伪随机地偏移，而且在这样的小区之间，干扰信号在跳数之间变化。 这可以通过例如为每个站提供可以与伪随机数结合使用以从分配给小区的跳频序列集合中选择的唯一标识符来实现。

公开(公告)号：US06091954A

公开(公告)日：2000-07-18

申请号：US831536

申请日：1997-04-07

申请人： Jacobus C. Haartsen ,  Paul W. Dent

发明人： Jacobus C. Haartsen ,  Paul W. Dent

IPC分类号： H04M15/16 ,  H04B7/005 ,  H04B7/26 ,  H04M15/00 ,  H04M15/12 ,  H04W4/24 ,  H04W8/18 ,  H04W8/22 ,  H04W16/12 ,  H04W28/18 ,  H04W52/28 ,  H04W72/08

CPC分类号： H04W28/18 ,  H04M15/00 ,  H04M15/12 ,  H04W4/24 ,  H04W52/283 ,  H04W8/22 ,  H04M2215/2026 ,  H04M2215/22 ,  H04M2215/32 ,  H04W16/12 ,  H04W28/16 ,  H04W28/24 ,  H04W48/20 ,  H04W72/04 ,  H04W72/08 ,  H04W8/18

摘要： In a multi-reuse level cellular communications system, a channel is assigned for use by a mobile unit by first determining whether the mobile unit is a non-enhanced mobile unit or an enhanced mobile unit. Then a determination is made as to the type of communication service being requested. A minimum link quality required by the mobile unit can then be established based on factors that include the mobile unit type and the type of communication service being requested. A base station that has the necessary receiver detection capabilities and transceiver processing capabilities is then selected, and a channel, corresponding to a highest reuse plan, available to the base station is assigned to the call.

摘要翻译： 在多重复用级蜂窝通信系统中，通过首先确定移动单元是非增强型移动单元还是增强型移动单元，由移动单元分配信道以供使用。 然后确定所请求的通信服务的类型。 然后可以基于包括移动单元类型和所请求的通信服务的类型的因素来建立移动单元所需的最小链路质量。 然后选择具有必要的接收机检测能力和收发器处理能力的基站，并且将对基站可用的对应于最高重用计划的信道分配给该呼叫。

公开(公告)号：US6061568A

公开(公告)日：2000-05-09

申请号：US724469

申请日：1996-10-01

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04J1/00 ,  H04B7/26 ,  H04J1/12 ,  H04L5/06 ,  H04W72/04 ,  H04Q7/20

CPC分类号： H04L5/06 ,  H04J1/12 ,  H04W72/082 ,  H04W72/0453 ,  Y02B60/50

摘要： Method and apparatus for mitigating intermodulation distortion effects in frequency division multiple access (FDMA) communications systems. In one embodiment, an effective transmit power level is determined for each communication signal to be transmitted, and signals are allocated to frequency channels such that a smooth tapering of transmit power levels across contiguous frequency channels is achieved. Such smooth power tapering across frequency channels minimizes the possibility that two high power signals will generate an intermodulation distortion product sufficient to disrupt transmission of an immediately adjacent low power signal. In another exemplary embodiment, communication signals are allocated such that high power signals are positioned near a frequency band center, while low power signals are positioned near frequency band edges. As a result, intermodulation distortion between frequency bands in a multiple-band communication system is also minimized.

摘要翻译： 用于减轻频分多址（FDMA）通信系统中的互调失真效应的方法和装置。 在一个实施例中，为要发送的每个通信信号确定有效发射功率电平，并且将信号分配给频率信道，使得跨越连续频率信道的发射功率电平的平滑渐变实现。 跨频道的这种平滑功率逐渐减小，使得两个高功率信号将产生足以中断紧邻的低功率信号的传输的互调失真产物的可能性最小化。 在另一个示例性实施例中，分配通信信号，使得高功率信号位于频带中心附近，而低功率信号位于频带边缘附近。 结果，多频带通信系统中的频带之间的互调失真也被最小化。

公开(公告)号：US6047029A

公开(公告)日：2000-04-04

申请号：US931430

申请日：1997-09-16

申请人： H.ang.kan B. Eriksson ,  Kjell B. Gustafsson ,  Paul W. Dent

发明人： H.ang.kan B. Eriksson ,  Kjell B. Gustafsson ,  Paul W. Dent

IPC分类号： H03M3/02 ,  H03C3/09 ,  H03L7/183 ,  H03L7/197 ,  H04L27/20 ,  H04B14/06

CPC分类号： H03C3/0933 ,  H03C3/0925 ,  H03L7/1974 ,  H03L7/1976 ,  H04L27/2017

摘要： A frequency synthesizer has a phase locked loop, a .DELTA..SIGMA. modulator, and a filter. The phase locked loop includes a frequency divider that controls the frequency of the phase locked loop output signal. The output of the .DELTA..SIGMA. modulator is fed through the filter and the output of the filter is used to control a division factor in the frequency divider. Compensation may be performed at the input to the .DELTA..SIGMA. modulator in order to compensate for the filtering performed between the .DELTA..SIGMA. modulator and the frequency divider. The filter may be used to reduce quantization noise in an input to the frequency divider, and thereby reduces phase noise in an output of the phase locked loop.

摘要翻译： 频率合成器具有锁相环，DELTA SIGMA调制器和滤波器。 锁相环包括控制锁相环输出信号频率的分频器。 DELTA SIGMA调制器的输出通过滤波器馈送，滤波器的输出用于控制分频器中的分频因子。 可以在DELTA SIGMA调制器的输入端执行补偿，以补偿在DELTA SIGMA调制器和分频器之间执行的滤波。 滤波器可以用于减小分频器的输入中的量化噪声，从而减少锁相环输出中的相位噪声。