公开(公告)号：US5428668A

公开(公告)日：1995-06-27

申请号：US148828

申请日：1993-11-04

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

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

IPC分类号： H04J3/00 ,  H04B15/00 ,  H04J3/16 ,  H04L12/28 ,  H04L12/56 ,  H04W12/06 ,  H04W16/16 ,  H04W16/32 ,  H04W28/26 ,  H04W74/08 ,  H04W84/14 ,  H04Q7/22 ,  H04Q7/30

CPC分类号： H04W16/16 ,  H04W12/06 ,  H04W74/006 ,  H04W16/32 ,  H04W28/26 ,  H04W74/0833 ,  H04W84/045 ,  H04W84/14

摘要： Transceiver frequency and optionally power level are allocated to a radio personal communications system which includes a base station connected to a wire telephone network and a cellular terminal operating within a region of a wide area cellular network to minimize interference between communications over the wide area cellular network and communications between the base station and the cellular terminal. The same cellular terminal may thus be used to communicate over the lower cost wire network when within range of the base station and over the wide area cellular network otherwise. The frequency for communications between the cellular terminal and the base station are optionally assigned by the operator of the wide area cellular network so appropriate frequencies and power levels can be assigned for base stations, to minimize same channel interference with the wide area cellular network.

摘要翻译： 收发机频率和可选的功率电平被分配给无线电个人通信系统，该无线电个人通信系统包括连接到有线电话网络的基站和在广域蜂窝网络的区域内操作的蜂窝终端，以最小化在广域蜂窝网络上的通信之间的干扰 以及基站和蜂窝终端之间的通信。 因此，相同的蜂窝终端可以用于在基站的范围内以及广域蜂窝网络上通过较低成本的有线网络进行通信。 蜂窝终端和基站之间的通信频率可选地由广域蜂窝网络的运营商分配，从而可以为基站分配适当的频率和功率电平，以最小化与广域蜂窝网络的相同信道干扰。

公开(公告)号：US5425049A

公开(公告)日：1995-06-13

申请号：US140468

申请日：1993-10-25

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B1/713 ,  H04B1/715 ,  H04J13/00 ,  H04W16/02 ,  H04W16/12

CPC分类号： H04W16/12 ,  H04B1/713 ,  H04B1/715 ,  H04J13/00 ,  H04W16/02 ,  H04B2001/7154

摘要： A communication system having a frequency hopping scheme which provides increased interferer diversity without increased system delay is disclosed. The frequency hopping scheme includes providing a staggered offset period between hops of neighboring or adjacent base stations so as to create additional interference situations (diversity).

摘要翻译： 公开了一种具有跳频方案的通信系统，其提供增加的干扰源分集而不增加系统延迟。 跳频方案包括在相邻或相邻基站的跳跃之间提供交错的偏移周期，以便产生额外的干扰情况（分集）。

公开(公告)号：US5390245A

公开(公告)日：1995-02-14

申请号：US43758

申请日：1993-04-07

申请人： Paul W. Dent ,  Alex K. Raith ,  Jan. E. A. S. Dahlin

发明人： Paul W. Dent ,  Alex K. Raith ,  Jan. E. A. S. Dahlin

IPC分类号： H04W12/06 ,  H04L9/32

CPC分类号： H04W12/06 ,  H04W12/12

摘要： Methods for carrying out an authentication check in a mobile telephone system in which an authentic base station serves a plurality of mobile stations. A prior method carried out a unidirectional check from the base to a calling mobile, permitting a false base to carry out a false authentication check by collecting a number of so-called RAND-Response pairs. To avoid this problem, another unidirectional, base-to-mobile, authentication check and an authentication check from the mobile to the base are carried out. In one embodiment, only the bi-directional authentication check is carried out.

摘要翻译： 在真实基站服务于多个移动台的移动电话系统中执行认证检查的方法。 先前的方法执行从基地到呼叫移动台的单向检查，允许假基地通过收集许多所谓的RAND-响应对来执行虚假认证检查。 为了避免这个问题，进行了从移动到基地的另一个单向，基站到移动的认证检查和认证检查。 在一个实施例中，仅执行双向认证检查。

公开(公告)号：US5361404A

公开(公告)日：1994-11-01

申请号：US61038

申请日：1993-05-14

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B7/08 ,  H04L1/06 ,  H04B17/02

CPC分类号： H04L1/06 ,  H04B7/0857

摘要： Two or more signal paths are provided for receiving a radio frequency signal. One or more signal paths include conventional bandpass filters for eliminating interference and noise signals. One or more remaining signal paths include reduced filtering devices for increasing the sensitivity of a radio frequency receiver to the desired signal. Each of the receiving paths is coupled to a respective radio frequency amplifier. Provided that each radio frequency amplifier has equivalent current-source output impedances, the output signals from each amplifier are added constructively if they are in-phase. If the output signals are out-of-phase, a phase inverter inverts the phase of one signal so that the signals may be added constructively. The combined signals of the two or more radio frequency amplifiers pass through various signal processing components associated with conventional superheterodyne receivers. A control unit produces gain variation signals for controlling the gain of each radio frequency amplifier. Accordingly, the control unit controls whether the desired signal is received from a first signal path, a second signal path, or as a weighted combination of two or more signal paths.

摘要翻译： 提供两个或更多个信号路径用于接收射频信号。 一个或多个信号路径包括用于消除干扰和噪声信号的常规带通滤波器。 一个或多个剩余的信号路径包括用于增加射频接收机对期望信号的灵敏度的减小的滤波装置。 每个接收路径耦合到相应的射频放大器。 如果每个射频放大器具有等效的电流源输出阻抗，则如果它们同相，则来自每个放大器的输出信号被建设性地添加。 如果输出信号异相，则相位反相器将一个信号的相位反相，从而可以建设性地添加信号。 两个或更多个射频放大器的组合信号通过与常规超外差接收器相关联的各种信号处理部件。 控制单元产生用于控制每个射频放大器的增益的增益变化信号。 因此，控制单元控制是否从第一信号路径，第二信号路径或两个或更多个信号路径的加权组合接收期望的信号。

公开(公告)号：US5335250A

公开(公告)日：1994-08-02

申请号：US965848

申请日：1992-10-22

申请人： Paul W. Dent ,  Sandeep Chennakeshu

发明人： Paul W. Dent ,  Sandeep Chennakeshu

IPC分类号： H04B7/08 ,  H04L25/03 ,  H04L25/30 ,  H04L27/233 ,  H04L29/12 ,  H04Q1/20

CPC分类号： H04L27/2337 ,  H04B7/0857 ,  H04L25/03178 ,  H04L2025/0356

摘要： A method and apparatus for demodulating data symbols transmitted through a fading communication channel. A plurality of first predetermined data symbols, a plurality of unknown data symbols, and a plurality of second predetermined data symbols are sequentially received. The received pluralities of data symbols are stored, and first and second sets of reference signals from the stored pluralities of first and second predetermined data symbols, respectively, are determined. The stored unknown data symbols based on the first set of reference signals are forward-demodulated, beginning with unknown symbols received nearer the first predetermined data symbols. The stored unknown data symbols based on the second set of reference signals are backward-demodulated, beginning with the unknown data symbols received nearer the second predetermined data symbols. Quality values indicative of demodulation qualities of the forward- and backward-demodulated data symbols are determined. The quality values are compared, and either the forward- or backward-demodulated data symbols are selected based on the comparison of quality values.

摘要翻译： 一种解调通过衰落通信信道发送的数据符号的方法和装置。 依次接收多个第一预定数据符号，多个未知数据符号和多个第二预定数据符号。 存储所接收的多个数据符号，并且分别确定来自存储的多个第一和第二预定数据符号的第一和第二组参考信号。 基于第一组参考信号的存储的未知数据符号被正向解调，从接近第一预定数据符号的未知符号开始。 基于第二组参考信号存储的未知数据符号被从第二预定数据符号更接近的未知数据符号开始被反向解调。 确定表示前向和后向解调数据符号的解调质量的质量值。 比较质量值，并且基于质量值的比较来选择前向或后向解调的数据符号。

公开(公告)号：US5230003A

公开(公告)日：1993-07-20

申请号：US652544

申请日：1991-02-08

申请人： Paul W. Dent ,  Alex K. Raith

发明人： Paul W. Dent ,  Alex K. Raith

IPC分类号： H03M13/00 ,  H04L1/00

CPC分类号： H04L1/0059 ,  H03M13/00 ,  H04L1/0046 ,  H04L1/0071

摘要： A decoding system discriminates between different types of communications traffic signals. Each type of traffic signal is encoded using a different error correction code. Plural, parallel decoders each decode a received traffic signal using a different decoding technique. Each decoding technique operates in accordance with one of the error correction codes. A quantitative measurement of the reliability of a decoded result is generated by each decoder. A comparison processor accumulates the quantitative measurements made by each decoder and compares the accumulated values. That decoder having the most reliable, accumulated value is selected to decode the current traffic signals. The remaining decoders are deactivated to conserve processing time.

摘要翻译： 解码系统区分不同类型的通信业务信号。 每种类型的交通信号都使用不同的纠错码进行编码。 多个并行解码器使用不同的解码技术对接收到的交通信号进行解码。 每个解码技术根据纠错码之一进行操作。 每个解码器产生解码结果的可靠性的定量测量。 比较处理器累积由每个解码器进行的定量测量并比较累积值。 选择具有最可靠的累加值的解码器来解码当前的交通信号。 剩余的解码器被禁用以节省处理时间。

公开(公告)号：US5095288A

公开(公告)日：1992-03-10

申请号：US611523

申请日：1990-11-13

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H03L7/093 ,  H03L7/089 ,  H03L7/107

CPC分类号： H03L7/0893 ,  H03L7/107 ,  H03L2207/04 ,  H03L7/0898

摘要： The invention relates to a phase-locked loop having a variable bandwidth and comprising a controlled oscillator, a phase comparison device, two current generating devices (21-22, 25-26) and a loop filter (23-24). Each of the current generating devices is intended to produce a positive or a negative pulsed current in response to signals from the phase comparison device. The outputs of the current generating devices are each connected to a respective point in the loop filter. The loop bandwidth can be varied continuously while maintaining a desired damping factor, by increasing the amplitude of the currents from each of the current generating devices (21-22, 25-26) when the bandwidth is to be increased, and vice versa.

公开(公告)号：US5084669A

公开(公告)日：1992-01-28

申请号：US490330

申请日：1990-03-08

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L27/00 ,  G01R25/08 ,  H03D13/00 ,  H04L27/22

CPC分类号： H03D13/006

摘要： An electrical circuit for producing a digital value which is representative of instantaneous phase of an electrical input signal relative to a reference frequency signal. The circuit includes a digital counter for continuously generating a stored count representing a value resulting from dividing the reference frequency signal by a repeating count cycle frequency which is of the same order as an expected center frequency of the electrical input signal. A trigger unit produces a trigger pulse in response to the trigger unit receiving a sampling pulse and a transition edge of the electrical input signal. An intermediate register stores a momentary state of the counter circuit in response to receiving the trigger pulse. The momentary state of the counter circuit corresponds to an instantaneous phase value of the electrical input signal. A correcting circuit is provided for correcting a resulting numerical value in the intermediate register by removing an accumulating phase offset value. An output register is provided for storing the corrected resulting numerical value of the counter circuit.

公开(公告)号：US08401487B2

公开(公告)日：2013-03-19

申请号：US12650201

申请日：2009-12-30

申请人： Paul W. Dent ,  Leonid Krasny

发明人： Paul W. Dent ,  Leonid Krasny

IPC分类号： H04B17/00

CPC分类号： H04L25/022 ,  H04L25/0222 ,  H04L25/0232

摘要： A receiver and receive processing method described herein improves the accuracy of channel estimates by correcting for the assumption that the Doppler shift (or rate-of-change-of-delay) stays constant for each frequency within a signal bandwidth of a received signal. To that end, a receiver according to the present invention comprises a channel processor having multiple processing units. A first processing unit processes reference values (e.g., pilot signals) received for each of a plurality of frequencies within a signal bandwidth at a plurality of different signal times (or the complex propagation channel coefficients estimated therefrom) to determine a set of complex wave amplitudes either for each of multiple frequencies in the signal bandwidth or for each of the different signal times. A second processing unit subsequently processes the complex wave amplitudes to determine complex scattering coefficients, where each complex scattering coefficient corresponds to a respective scattering object in the wireless communication channel.

摘要翻译： 本文描述的接收机和接收处理方法通过校正多普勒频移（或延迟变化率）在接收信号的信号带宽内对于每个频率保持恒定的假设来提高信道估计的精度。 为此，根据本发明的接收机包括具有多个处理单元的信道处理器。 第一处理单元处理在多个不同信号时间（或从其估计的复数传播信道系数）内在信号带宽内的多个频率中的每一个接收的参考值（例如，导频信号），以确定一组复波幅度 对于信号带宽中的多个频率中的每一个或针对不同信号时间的每一个， 第二处理单元随后处理复波幅度以确定复散射系数，其中每个复散射系数对应于无线通信信道中的相应散射物体。

公开(公告)号：US08279745B2

公开(公告)日：2012-10-02

申请号：US12623751

申请日：2009-11-23

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04J11/00

CPC分类号： H04L25/22 ,  H04L5/20 ,  H04L25/03178 ,  H04L25/49 ,  H04L27/2626 ,  H04L27/2647 ,  H04L27/28 ,  H04L27/34

摘要： A wire-based infrastructure capable of delivering high data rates is described herein. A transmission system, reception system, and/or repeater uses wire-mapping code matrices to reduce interference in multi-wire cables to increase the data rate provided by such multi-wire cables. More particularly, code mapping matrices are applied to transmission and/or received input signals to generate a mapped signal for each output wire or corresponding to each input wire such that each mapped signal comprises a different combination of all of the input signals. Different ones of the wire-mapped signals are ultimately transmitted on different wires. In so doing, the present invention facilitates crosstalk reduction, and therefore, provides a technique that increases the data rate available on multi-wire cables.

摘要翻译： 这里描述了能够提供高数据速率的基于线的基础设施。 传输系统，接收系统和/或中继器使用线映射码矩阵来减少多线电缆中的干扰，以增加由这种多线电缆提供的数据速率。 更具体地，代码映射矩阵被应用于传输和/或接收的输入信号，以针对每个输出线产生映射信号或对应于每个输入线，使得每个映射信号包括所有输入信号的不同组合。 不同的有线映射信号最终在不同的导线上传输。 在这样做时，本发明便于减少串扰，因此提供了一种提高多线缆上可用数据速率的技术。