公开(公告)号：US06839539B2

公开(公告)日：2005-01-04

申请号：US10173912

申请日：2002-06-17

申请人： Randolph L. Durrant ,  Logan Scott ,  John K. Reece

发明人： Randolph L. Durrant ,  Logan Scott ,  John K. Reece

IPC分类号： G01S5/14 ,  G01S11/02 ,  G01S19/25 ,  G01S19/48 ,  H04B7/26 ,  H04B7/15 ,  H04Q7/20

CPC分类号： H04B7/2606 ,  G01S5/0273 ,  G01S5/14 ,  G01S11/02 ,  H04B7/155 ,  H04W16/26

摘要： A RF signal repeater system is added to a wireless communications network which increases user data rates at the periphery of the cellular coverage area by boosting the downlink (base station to mobile user) signal and uplink (mobile user to base station) signal. The RF signal repeater system includes a signal tagging means that adds a unique electronic signature to the repeated signal such that position determination errors due to a non-line of sight propagation path can be corrected. The repeated signal is received and processed with a location measurement unit to determine the time of arrival and to extract the signal tag of the repeated signal. The time of arrival measurement and recovered signal tag are then processed at a mobile location center to determine the true position of the transmitter.

公开(公告)号：US06501955B1

公开(公告)日：2002-12-31

申请号：US09596653

申请日：2000-06-19

申请人： Randolph L. Durrant ,  Logan Scott ,  John K. Reece

发明人： Randolph L. Durrant ,  Logan Scott ,  John K. Reece

IPC分类号： H04Q720

CPC分类号： H04B7/2606 ,  G01S5/0273 ,  G01S5/14 ,  G01S11/02 ,  H04B7/155 ,  H04W16/26

摘要： A RF signal repeater system is added to a wireless communications network which increases user data rates at the periphery of the cellular coverage area by boosting the downlink (base station to mobile user) signal and uplink (mobile user to base station) signal. The RF signal repeater system includes a signal tagging means that adds a unique electronic signature to the repeated signal such that position determination errors due to a non-line of sight propagation path can be corrected. The repeated signal is received and processed with a location measurement unit to determine the time of arrival and to extract the signal tag of the repeated signal. The time of arrival measurement and recovered signal tag are then processed at a mobile location center to determine the true position of the transmitter.

摘要翻译： 将RF信号中继器系统添加到无线通信网络中，其通过将下行链路（基站到移动用户）信号和上行链路（移动用户到基站）信号升高来增加蜂窝覆盖区域的外围的用户数据速率。 RF信号中继器系统包括信号标签装置，其将独特的电子签名添加到重复信号，使得可以校正由于非线视线传播路径引起的位置确定错误。 用位置测量单元接收和处理重复的信号，以确定到达时间并提取重复信号的信号标签。 然后在移动位置中心处处理到达时间和恢复的信号标签，以确定发射机的真实位置。

公开(公告)号：US5754584A

公开(公告)日：1998-05-19

申请号：US480443

申请日：1995-06-07

申请人： Randolph L. Durrant ,  Mark T. Burbach ,  Ryan N. Jensen ,  Logan Scott ,  Claude M. Williams

发明人： Randolph L. Durrant ,  Mark T. Burbach ,  Ryan N. Jensen ,  Logan Scott ,  Claude M. Williams

IPC分类号： H04B20060101 ,  H04B1/707 ,  H04J13/00 ,  H04J14/00 ,  H04L27/20 ,  H04L27/227 ,  H04L27/233

CPC分类号： H04B1/707 ,  H04B1/708 ,  H04J13/10 ,  H04L27/2014 ,  H04L27/2278 ,  H04L27/2332 ,  H04B1/7093 ,  H04B2201/70701 ,  H04J14/005

摘要： A technique for modulating and demodulating CPM spread spectrum signals and variations of CPM spread spectrum signals. A spread spectrum transmitter includes a chip sequence generator for generating a chip sequence from a data stream, a switch for dividing said chip sequence into an odd chip sequence and an even chip sequence, and a modulator for generating and transmitting a continuous phase modulated signal from said odd chip sequence and said even chip sequence. A spread spectrum receiver comprises a plurality of non-coherent serial CPM correlators, each generating a correlation signal. In a preferred embodiment, the chip sequence generator of the transmitter comprises a table of symbol codes, each symbol code comprising a series of chips corresponding to a unique series of bits in said data stream, and each non-coherent serial CPM correlator is configured to detect one of the symbol codes. The spread spectrum receiver selects a data symbol based on said correlation signals output from the non-coherent serial CPM correlators. A spread spectrum preamble may be used to set initial timing for the non-coherent serial CPM correlators.

摘要翻译： 用于调制和解调CPM扩频信号和CPM扩频信号变化的技术。 扩频发射机包括用于从数据流产生码片序列的码片序列发生器，用于将所述码片序列划分为奇数码片序列和偶数码片序列的开关，以及调制器，用于产生和发送连续相位调制信号 所述奇数芯片序列和所述均匀码片序列。 扩频接收机包括多个非相干串行CPM相关器，每个相关器产生相关信号。 在优选实施例中，发射机的码片序列发生器包括符号码表，每个符号码包括对应于所述数据流中唯一一系列比特的一系列码片，并且每个非相干序列CPM相关器被配置为 检测其中一个符号代码。 扩频接收机基于从非相干串行CPM相关器输出的所述相关信号来选择数据符号。 可以使用扩展频谱前同步码来设置非相干串行CPM相关器的初始定时。

公开(公告)号：US5856998A

公开(公告)日：1999-01-05

申请号：US769187

申请日：1996-12-18

申请人： Randolph L. Durrant ,  Mark Burbach

发明人： Randolph L. Durrant ,  Mark Burbach

IPC分类号： H04B1/707 ,  H04B1/708 ,  H04B1/7093 ,  H04J13/10 ,  H04L27/20 ,  H04L27/227 ,  H04L27/233

CPC分类号： H04B1/708 ,  H04B1/707 ,  H04B1/7093 ,  H04J13/10 ,  H04L27/2014 ,  H04L27/2278 ,  H04L27/2332 ,  H04B2201/70701

摘要： A technique for modulating and demodulating continuous phase modulation (CPM) spread spectrum signals and variations thereof. A transmitter encodes M data bits using a selected spread spectrum code, divides the spread spectrum code into a plurality of chip codes (such as even chips and odd chips), independently modulates the even and odd chips with orthogonal carrier signals using CPM or a related technique, and superposes the plurality of resultants for transmission. A receiver receives the superposed spread spectrum signal, divides the spread spectrum signal into duplicate signals, separately demodulates the duplicate signals into an odd chip signal and an even chip signal, simultaneously attempts to correlate the odd chip signal with a locally generated odd chip sequence and the even chip signal with a locally generated even chip sequence, and interleaves the correlation signals into a unified correlation signal. The unified correlation signal may be compared against other correlation signals to determine the content of the transmitted data.

摘要翻译： 用于调制和解调连续相位调制（CPM）扩频信号及其变化的技术。 发射机使用所选择的扩频码对M个数据比特进行编码，将扩频码划分成多个码片（例如偶数码片和奇数码片），使用CPM或相关的方式用正交载波信号独立调制偶数和奇数码片 技术，并叠加多个传输结果。 接收机接收叠加的扩频信号，将扩展频谱信号分解为重复信号，将重复信号单独解调为奇数芯片信号和均匀码片信号，同时尝试将奇数芯片信号与本地生成的奇数码片序列相关， 具有本地产生的均匀码片序列的偶数码片信号，并将相关信号交织为统一的相关信号。 可以将统一的相关信号与其他相关信号进行比较，以确定发送数据的内容。

公开(公告)号：US5963586A

公开(公告)日：1999-10-05

申请号：US486824

申请日：1995-06-07

申请人： Randolph L. Durrant ,  Mark Burbach

发明人： Randolph L. Durrant ,  Mark Burbach

IPC分类号： H04B20060101 ,  H04B1/707 ,  H04J13/00 ,  H04J14/00 ,  H04L27/20 ,  H04L27/227 ,  H04L27/233

CPC分类号： H04B1/707 ,  H04B1/708 ,  H04J13/10 ,  H04L27/2014 ,  H04L27/2278 ,  H04L27/2332 ,  H04B1/7093 ,  H04B2201/70701 ,  H04J14/005

摘要： A technique for modulating and demodulating CPM spread spectrum signals and variations of CPM spread spectrum signals. A transmitter divides a signal data stream into a plurality of data streams (such as I and Q data streams), independently modulates the I and Q data streams using CPM or a related technique, and superposes the plurality of resultants for transmission. A receiver receives the superposed spread spectrum signal and simultaneously attempts to correlate for a plurality of chip sequences (such as I and Q chip sequences), and interleaves the correlated I and Q data streams into a unified signal data stream. In one embodiment, the receiver separates the received spread spectrum signal into real and imaginary parts, attempts to correlate both real and imaginary parts for a plurality of chip sequences, and combines the real I, real Q, imaginary I, and imaginary Q signals into a unified signal data stream. The demodulating reference signal in the receiver may or may not be frequency or phase matched with the transmitter. In other embodiments, single bit or multi-bit digitization of the received spread spectrum signal for both I and Q signals (or real I, real Q, imaginary I, and imaginary Q signals) is carried out prior to correlation. In another embodiment, the transmitter differentially phase encodes the information to be transmitted, and the receiver decodes the phase encoded information by determining a quantized phase angle of the received signal.

摘要翻译： 用于调制和解调CPM扩频信号和CPM扩频信号变化的技术。 发射机将信号数据流分割成多个数据流（例如I和Q数据流），使用CPM或相关技术独立地调制I和Q数据流，并将多个结果叠加以进行传输。 接收机接收叠加的扩频信号，并同时尝试对多个码片序列（例如I和Q码片序列）进行相关，并将相关的I和Q数据流交织成统一的信号数据流。 在一个实施例中，接收机将接收到的扩展频谱信号分离成实部和虚部，尝试将多个码片序列的实部和虚部相关，并将实际I，实数Q，虚数I和虚数Q信号组合成 一个统一的信号数据流。 接收机中的解调参考信号可以是或可以不是与发射机频率或相位匹配的。 在其他实施例中，在相关之前执行用于I和Q信号（或实数I，实数Q，虚I和虚信号Q）的接收扩展频谱信号的单比特或多比特数字化。 在另一个实施例中，发射机对待发射的信息进行差分相位编码，并且接收机通过确定接收信号的量化相位角来解码相位编码信息。

公开(公告)号：US5832028A

公开(公告)日：1998-11-03

申请号：US480914

申请日：1995-06-07

申请人： Randolph L. Durrant ,  Mark Burbach

发明人： Randolph L. Durrant ,  Mark Burbach

IPC分类号： H04B20060101 ,  H04B1/707 ,  H04J13/00 ,  H04J14/00 ,  H04L27/20 ,  H04L27/227 ,  H04L27/233 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

CPC分类号： H04B1/707 ,  H04B1/708 ,  H04J13/10 ,  H04L27/2014 ,  H04L27/2278 ,  H04L27/2332 ,  H04B1/7093 ,  H04B2201/70701 ,  H04J14/005

摘要： A technique for modulating and demodulating CPM spread spectrum signals and variations of CPM spread spectrum signals. A transmitter divides a signal data stream into a plurality of data streams (such as I and Q data streams), independently modulates the I and Q data streams using CPM or a related technique, and superposes the plurality of resultants for transmission. A receiver receives the superposed spread spectrum signal and simultaneously attempts to correlate for a plurality of chip sequences (such as I and Q chip sequences), and interleaves the correlated I and Q data streams into a unified signal data stream. In one embodiment, the receiver separates the received spread spectrum signal into real and imaginary parts, attempts to correlate both real and imaginary parts for a plurality of chip sequences, and combines the real I, real Q, imaginary I, and imaginary Q signals into a unified signal data stream. The demodulating reference signal in the receiver may or may not be frequency or phase matched with the transmitter. In other embodiments, single bit or multi-bit digitization of the received spread spectrum signal for both I and Q signals (or real I, real Q, imaginary I, and imaginary Q signals) is carried out prior to correlation. In another embodiment, the transmitter differentially phase encodes the information to be transmitted, and the receiver decodes the phase encoded information by determining a quantized phase angle of the received signal.

摘要翻译： 用于调制和解调CPM扩频信号和CPM扩频信号变化的技术。 发射机将信号数据流划分为多个数据流（例如I和Q数据流），使用CPM或相关技术独立地调制I和Q数据流，并将多个结果叠加以进行传输。 接收机接收叠加的扩频信号，并同时尝试对多个码片序列（例如I和Q码片序列）进行相关，并将相关的I和Q数据流交织成统一的信号数据流。 在一个实施例中，接收机将接收到的扩展频谱信号分离成实部和虚部，尝试将多个码片序列的实部和虚部相关，并将实际I，实数Q，虚数I和虚数Q信号组合成 一个统一的信号数据流。 接收机中的解调参考信号可以是或可以不是与发射机频率或相位匹配的。 在其他实施例中，在相关之前执行用于I和Q信号（或实数I，实数Q，虚I和虚信号Q）的接收扩展频谱信号的单比特或多比特数字化。 在另一个实施例中，发射机对待发射的信息进行差分相位编码，并且接收机通过确定接收信号的量化相位角来解码相位编码信息。

公开(公告)号：US5610940A

公开(公告)日：1997-03-11

申请号：US480668

申请日：1995-06-07

申请人： Randolph L. Durrant ,  Mark Burbach

发明人： Randolph L. Durrant ,  Mark Burbach

IPC分类号： H04B20060101 ,  H04B1/707 ,  H04J13/00 ,  H04J14/00 ,  H04L27/20 ,  H04L27/227 ,  H04L27/233 ,  H04L27/14

CPC分类号： H04B1/707 ,  H04B1/708 ,  H04J13/10 ,  H04L27/2014 ,  H04L27/2278 ,  H04L27/2332 ,  H04B1/7093 ,  H04B2201/70701 ,  H04J14/005

摘要： A technique for modulating and demodulating continuous phase modulation (CPM) spread spectrum signals and variations thereof. A transmitter encodes M data bits using a selected spread spectrum code, divides the spread spectrum code into a plurality of chip codes (such as even chips and odd chips), independently modulates the even and odd chips with orthogonal carrier signals using CPM or a related technique, and superposes the plurality of resultants for transmission. A receiver receives the superposed spread spectrum signal and divides it into a real signal and an imaginary signal. The real signal is connected to a real CPM correlator which demodulates its input into a real I signal and a real Q signal, separately correlates the real I signal with the odd chips of a chip code and the real Q signal with the even chips of the chip code, and combines the correlation signals into a real correlation signal. The imaginary signal is connected to an imaginary CPM correlator which demodulates its input into an imaginary I signal and an imaginary Q signal, separately correlates the imaginary I signal with the odd chips of the chip code and the imaginary Q signal with the inverse of the even chips of the chip code, and combines the correlation signals into an imaginary correlation signal. The real and imaginary correlation signals are combined into a unified correlation signal.

摘要翻译： 用于调制和解调连续相位调制（CPM）扩频信号及其变化的技术。 发射机使用所选择的扩频码对M个数据比特进行编码，将扩频码划分成多个码片（例如偶数码片和奇数码片），使用CPM或相关的方式用正交载波信号独立调制偶数和奇数码片 技术，并叠加多个传输结果。 接收机接收叠加的扩频信号，并将其分为实数信号和虚信号。 真实信号连接到真正的CPM相关器，其将其输入解调为实际I信号和实际Q信号，将实际I信号与芯片代码的奇数芯片和实际Q信号分别与 并将相关信号组合成实相关信号。 虚信号连接到虚拟CPM相关器，其将其输入解调为虚信号I和虚拟Q信号，将虚信号I与芯片码的奇数码和虚数Q信号分别相互关联， 芯片代码的芯片，并将相关信号组合成虚拟相关信号。 实数和虚拟相关信号被组合成统一的相关信号。

公开(公告)号：US07061924B1

公开(公告)日：2006-06-13

申请号：US09866505

申请日：2001-05-24

申请人： Randolph L. Durrant ,  Benjamin K. Gibbs

发明人： Randolph L. Durrant ,  Benjamin K. Gibbs

IPC分类号： H04L12/28

CPC分类号： G01D4/004 ,  H04L45/00 ,  H04W84/18 ,  H04W88/04 ,  Y02B90/242 ,  Y02B90/246 ,  Y04S20/322 ,  Y04S20/42

摘要： A monitoring system includes a central gateway. The central gateway is configured to interface the monitoring system to a WAN. The monitoring system also includes a network of radio telemetry devices. Each radio telemetry device includes a monitoring device, a radio module configured to communicate with other radio telemetry devices and the central gateway, and a processor. The radio telemetry device can be configured to acquire monitoring data and forward it to the central gateway. The radio telemetry device can also be configured to relay monitoring data from other radio telemetry devices to the central gateway allowing for the use of short range, low power radio modules.

摘要翻译： 监控系统包括一个中央网关。 中央网关配置为将监控系统连接到WAN。 该监控系统还包括无线电遥测设备网络。 每个无线电遥测装置包括监视装置，被配置为与其他无线电遥测装置和中央网关通信的无线电模块以及处理器。 无线电遥测装置可以配置成采集监控数据并将其转发到中央网关。 无线电遥测装置还可以被配置为将来自其他无线电遥测装置的监测数据中继到中央网关，允许使用短距离低功率无线电模块。

公开(公告)号：US5754585A

公开(公告)日：1998-05-19

申请号：US486883

申请日：1995-06-07

申请人： Randolph L. Durrant ,  Mark Burbach

发明人： Randolph L. Durrant ,  Mark Burbach

IPC分类号： H04B20060101 ,  H04B1/707 ,  H04J13/00 ,  H04J14/00 ,  H04L27/20 ,  H04L27/227 ,  H04L27/233

CPC分类号： H04B1/707 ,  H04B1/708 ,  H04J13/10 ,  H04L27/2014 ,  H04L27/2278 ,  H04L27/2332 ,  H04B1/7093 ,  H04B2201/70701 ,  H04J14/005

摘要： A technique for modulating and demodulating CPM spread spectrum signals and variations of CPM spread spectrum signals. A transmitter divides a signal data stream into a plurality of data streams (such as I and Q data streams), independently modulates the I and Q data streams using CPM or a related technique, and superposes the plurality of resultants for transmission. A receiver receives the superposed spread spectrum signal and simultaneously attempts to correlate for a plurality of chip sequences (such as I and Q chip sequences), and interleaves the correlated I and Q data streams into a unified signal data stream. In one embodiment, the receiver separates the received spread spectrum signal into real and imaginary parts, attempts to correlate both real and imaginary parts for a plurality of chip sequences, and combines the real I, real Q, imaginary I, and imaginary Q signals into a unified signal data stream. The demodulating reference signal in the receiver may or may not be frequency or phase matched with the transmitter. In other embodiments, single bit or multi-bit digitization of the received spread spectrum signal for both I and Q signals (or real I, real Q, imaginary I, and imaginary Q signals) is carried out prior to correlation. In another embodiment, the transmitter differentially phase encodes the information to be transmitted, and the receiver decodes the phase encoded information by determining a quantized phase angle of the received signal.

摘要翻译： 用于调制和解调CPM扩频信号和CPM扩频信号变化的技术。 发射机将信号数据流分割成多个数据流（例如I和Q数据流），使用CPM或相关技术独立地调制I和Q数据流，并将多个结果叠加以进行传输。 接收机接收叠加的扩频信号，并同时尝试对多个码片序列（例如I和Q码片序列）进行相关，并将相关的I和Q数据流交织成统一的信号数据流。 在一个实施例中，接收机将接收到的扩展频谱信号分离成实部和虚部，尝试将多个码片序列的实部和虚部相关，并将实际I，实数Q，虚数I和虚数Q信号组合成 一个统一的信号数据流。 接收机中的解调参考信号可以是或可以不是与发射机频率或相位匹配的。 在其他实施例中，在相关之前执行用于I和Q信号（或实数I，实数Q，虚I和虚信号Q）的接收扩频信号的单比特或多比特数字化。 在另一个实施例中，发射机对待发射的信息进行差分相位编码，并且接收机通过确定接收信号的量化相位角来解码相位编码信息。

公开(公告)号：US5629956A

公开(公告)日：1997-05-13

申请号：US480167

申请日：1995-06-07

申请人： Randolph L. Durrant ,  Mark Burbach

发明人： Randolph L. Durrant ,  Mark Burbach

IPC分类号： H04B20060101 ,  H04B1/707 ,  H04J13/00 ,  H04J14/00 ,  H04L27/20 ,  H04L27/227 ,  H04L27/233

CPC分类号： H04B1/707 ,  H04B1/708 ,  H04J13/10 ,  H04L27/2014 ,  H04L27/2278 ,  H04L27/2332 ,  H04B1/7093 ,  H04B2201/70701 ,  H04J14/005

摘要： A technique for modulating and demodulating continuous phase modulation (CPM) spread spectrum signals and variations thereof. A transmitter encodes M data bits using a selected spread spectrum code, divides the spread spectrum code into a plurality of chip codes (such as even chips and odd chips), independently modulates the even and odd chips with orthogonal carrier signals using CPM or a related technique, and superposes the plurality of resultants for transmission. A receiver receives the superposed spread spectrum signal and divides it into a real signal and an imaginary signal. The real signal is connected to a first correlator which divides its input into a real I signal and a real Q signal, serially correlates the real I signal with the odd chips of a chip code and the real Q signal with the even chips of the chip code, and combines the correlation signals into a real correlation signal. The imaginary signal is connected to a second correlator which divides its input into an imaginary I signal and an imaginary Q signal, serially correlates the imaginary I signal with the odd chips of the chip code and the imaginary Q signal with the inverse of the even chips of the chip code, and combines the correlation signals into an imaginary correlation signal. The real and imaginary correlation signals are combined into a unified correlation signal.

摘要翻译： 用于调制和解调连续相位调制（CPM）扩频信号及其变化的技术。 发射机使用所选择的扩频码对M个数据比特进行编码，将扩频码划分成多个码片（例如偶数码片和奇数码片），使用CPM或相关的方式用正交载波信号独立调制偶数和奇数码片 技术，并叠加多个传输结果。 接收机接收叠加的扩频信号，并将其分为实数信号和虚信号。 实信号连接到第一相关器，其将其输入分为实际I信号和实际Q信号，将实际I信号与芯片码的奇数芯片和实际Q信号与芯片的偶数芯片串联 代码，并将相关信号组合成实相关信号。 虚信号连接到第二相关器，该第二相关器将其输入分成虚信号I和虚信号Q信号，使虚信号与芯片码的奇数芯片和虚拟Q信号串联地与偶数码片的倒数相关 并将相关信号组合成虚拟相关信号。 实数和虚拟相关信号被组合成统一的相关信号。