公开(公告)号：US06922166B2

公开(公告)日：2005-07-26

申请号：US10750897

申请日：2004-01-05

申请人： James L. Richards ,  Larry W. Fullerton ,  David C. Meigs ,  Randall S. Stanley ,  Ivan A. Cowie

发明人： James L. Richards ,  Larry W. Fullerton ,  David C. Meigs ,  Randall S. Stanley ,  Ivan A. Cowie

IPC分类号： G01S13/08 ,  G01S13/76 ,  G01S13/86 ,  G01S13/00

CPC分类号： G01S13/08 ,  G01S13/76 ,  G01S13/765 ,  G01S13/87 ,  G01S13/913

摘要： A system and a method for distance measurement utilizes a radio system. The distance is measured in coarse resolution, and in fine resolution that corresponds to distance attributes. The distance between first and second radio transceivers is determined from the coarse distance and the fine distance attributes.

摘要翻译： 用于距离测量的系统和方法利用无线电系统。 距离以粗分辨率测量，并以与距离属性对应的精细分辨率测量。 第一和第二无线电收发器之间的距离由粗距离和精细距离属性确定。

公开(公告)号：US06823022B1

公开(公告)日：2004-11-23

申请号：US09587033

申请日：2000-06-02

申请人： Larry W. Fullerton ,  James L. Richards ,  Vernon R. Brethour ,  Mark D. Roberts ,  Mark A. Barnes ,  Ivan A. Cowie ,  Donald D. Mondul

发明人： Larry W. Fullerton ,  James L. Richards ,  Vernon R. Brethour ,  Mark D. Roberts ,  Mark A. Barnes ,  Ivan A. Cowie ,  Donald D. Mondul

IPC分类号： H04B1500

CPC分类号： H04B1/719 ,  H04B2001/6908

摘要： A method for mitigating interference in impulse radio communication conveying a message from a transmitting station to a receiving station. The method comprises the steps of: (a) conveying the message in packets; (b) repeating conveyance of selected packets to make up a repeat package; and (c) conveying the repeat package a plurality of times at a repeat period greater than twice the occurrence period of the interference. The communication may convey a message from a proximate transmitter to a distal receiver, and receive a message by a proximate receiver from a distal transmitter. In such a system, the method comprises the steps of: (a) providing interference indications by the distal receiver to the proximate transmitter; (b) using the interference indications to determine predicted noise periods; and (c) operating the proximate transmitter to convey the message according to at least one of the following: (1) avoiding conveying the message during noise periods; (2) conveying the message at a higher power during noise periods; (3) varying error detection coding in the message during noise periods; (4) retransmitting the message following noise periods; (5) avoiding conveying the message when interference is greater than a first strength; (6) conveying the message at a higher power when the interference is greater than a second strength; (7) varying error detection coding in the message when the interference is greater than a third strength; and (8) retransmitting a portion of the message after interference has subsided to less than a predetermined strength.

摘要翻译： 一种用于减轻从发射站向接收站传送消息的脉冲无线电通信中的干扰的方法。 该方法包括以下步骤：（a）以消息的形式传送消息; （b）重复输送所选择的数据包以构成重复包; 和（c）以大于干扰发生周期的两倍的重复周期传送重复包多次。 通信可以将消息从邻近发射机传送到远端接收机，并且从远端发射机接收邻近接收机的消息。 在这种系统中，该方法包括以下步骤：（a）将远端接收机的干扰指示提供给邻近发射机; （b）使用干扰指示来确定预测的噪声周期; （c）根据以下至少一项操作近邻发射机传送消息：（1）避免在噪声周期期间传送消息; （2）在噪声期间以较高的功率传送消息; （3）在噪声周期期间在消息中改变错误检测编码; （4）在噪声周期后重传消息; （5）当干扰大于第一强度时避免传达消息; （6）当干扰大于第二强度时，以更高的功率传送消息; （7）当干扰大于第三强度时，在消息中改变错误检测编码; 和（8）在干扰之后将消息的一部分重新发送到小于预定的强度。

公开(公告)号：US07711026B2

公开(公告)日：2010-05-04

申请号：US11902171

申请日：2007-09-19

申请人： Mark D. Roberts ,  Marcus H. Pendergrass ,  Larry W. Fullerton ,  Ivan A. Cowie ,  James L. Richards

发明人： Mark D. Roberts ,  Marcus H. Pendergrass ,  Larry W. Fullerton ,  Ivan A. Cowie ,  James L. Richards

IPC分类号： H04B1/69

CPC分类号： H04L25/4902

摘要： A method for specifying pulse characteristics applies codes having pre-defined characteristics to a layout. The layout can be sequentially subdivided into at least first and second components that have the same or different sizes. The method applies a first code having first pre-defined properties to the first component and a second code having second pre-defined properties to the second component. The pre-defined properties may relate to the auto-correlation property, the cross-correlation property, and spectral properties, as examples. The codes can be used to specify subcomponents within a frame, and characteristic values (range-based, or discrete) within the subcomponents.

摘要翻译： 用于指定脉冲特征的方法将具有预定义特征的代码应用于布局。 布局可以依次细分为具有相同或不同尺寸的至少第一和第二组件。 该方法将具有第一预定义属性的第一代码应用于第一组件，并将具有第二预定义属性的第二代码应用于第二组件。 作为示例，预定义的属性可以涉及自相关性质，互相关性质和光谱性质。 代码可用于指定一个帧内的子组件，以及子组件中的特征值（基于范围或离散）。

公开(公告)号：US07526250B2

公开(公告)日：2009-04-28

申请号：US11213922

申请日：2005-08-30

申请人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie ,  David M. Dickson ,  Vernon R. Brethour ,  Preston Jett

发明人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie ,  David M. Dickson ,  Vernon R. Brethour ,  Preston Jett

IPC分类号： H04B1/40 ,  H04B1/02

CPC分类号： H04B1/7095 ,  H04B1/71632 ,  H04B1/7174 ,  H04B1/7176 ,  H04B1/7183

摘要： Apparatuses, systems and methods for transmitting and receiving modulated impulse radio signals. An impulse radio receiver includes a time base, a precision timing generator, a template generator, a delay, first and second correlators, a data detector and a time base adjustor. The time base produces a periodic timing signal that is used by the precision timing generator to produce a timing trigger signal. The template generator uses the timing trigger signal to produce a template signal. A delay receives the template signal and outputs a delayed template signal. When an impulse radio signal is received, the first correlator correlates the received impulse radio signal with the template signal to produce a first correlator output signal, and the second correlator correlates the received impulse radio signal with the delayed template signal to produce a second correlator output signal. The data detector produces a data signal based on at least the first correlator output signal. The time base adjustor produces a time base adjustment signal based on at least the second correlator output signal. The time base adjustment signal is used to synchronize the time base with the received impulse radio signal.

摘要翻译： 用于发送和接收调制脉冲无线电信号的装置，系统和方法。 脉冲无线电接收机包括时基，精度定时发生器，模板发生器，延迟，第一和第二相关器，数据检测器和时基调节器。 时基产生周期性定时信号，由精确定时发生器用来产生定时触发信号。 模板发生器使用定时触发信号产生模板信号。 延迟接收模板信号并输出​​延迟的模板信号。 当接收到脉冲无线电信号时，第一相关器将接收到的脉冲无线电信号与模板信号相关，以产生第一相关器输出信号，并且第二相关器将接收的脉冲无线电信号与延迟的模板信号相关联，以产生第二相关器输出 信号。 数据检测器至少基于第一相关器输出信号产生数据信号。 时基调节器至少基于第二相关器输出信号产生时基调整信号。 时基调整信号用于使时基与接收的脉冲无线电信号同步。

公开(公告)号：US06937667B1

公开(公告)日：2005-08-30

申请号：US09537692

申请日：2000-03-29

申请人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie ,  David M. Dickson ,  Vernon R. Brethour ,  Preston Jett

发明人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie ,  David M. Dickson ,  Vernon R. Brethour ,  Preston Jett

IPC分类号： H04B1/7095 ,  H04B1/7163 ,  H04B1/717 ,  H04B1/7176 ,  H04B1/7183 ,  H04L25/49 ,  H04B1/02 ,  H04B1/04

CPC分类号： H04B1/7095 ,  H04B1/71632 ,  H04B1/7174 ,  H04B1/7176 ,  H04B1/7183

摘要： Apparatuses, systems and methods for transmitting and receiving modulated impulse radio signals. An impulse radio receiver includes a time base, a precision timing generator, a template generator, a delay, first and second correlators, a data detector and a time base adjustor. The time base produces a periodic timing signal that is used by the precision timing generator to produce a timing trigger signal. The template generator uses the timing trigger signal to produce a template signal. A delay receives the template signal and outputs a delayed template signal. When an impulse radio signal is received, the first correlator correlates the received impulse radio signal with the template signal to produce a first correlator output signal, and the second correlator correlates the received impulse radio signal with the delayed template signal to produce a second correlator output signal. The data detector produces a data signal based on at least the first correlator output signal. The time base adjustor produces a time base adjustment signal based on at least the second correlator output signal. The time base adjustment signal is used to synchronize the time base with the received impulse radio signal.

摘要翻译： 用于发送和接收调制脉冲无线电信号的装置，系统和方法。 脉冲无线电接收机包括时基，精度定时发生器，模板发生器，延迟，第一和第二相关器，数据检测器和时基调节器。 时基产生周期性定时信号，由精确定时发生器用来产生定时触发信号。 模板发生器使用定时触发信号产生模板信号。 延迟接收模板信号并输出​​延迟的模板信号。 当接收到脉冲无线电信号时，第一相关器将接收到的脉冲无线电信号与模板信号相关，以产生第一相关器输出信号，并且第二相关器将接收的脉冲无线电信号与延迟的模板信号相关联，以产生第二相关器输出 信号。 数据检测器至少基于第一相关器输出信号产生数据信号。 时基调节器至少基于第二相关器输出信号产生时基调整信号。 时基调整信号用于使时基与接收的脉冲无线电信号同步。

公开(公告)号：US06539213B1

公开(公告)日：2003-03-25

申请号：US09332501

申请日：1999-06-14

申请人： James L. Richards ,  Larry W. Fullerton ,  Ivan A. Cowie

发明人： James L. Richards ,  Larry W. Fullerton ,  Ivan A. Cowie

IPC分类号： H04Q720

CPC分类号： H04W52/362 ,  H04B1/7163 ,  H04B1/7183 ,  H04B2001/6908 ,  H04W52/20 ,  H04W52/24 ,  H04W52/241 ,  H04W52/367

摘要： A system and method for impulse radio power control wherein a first transceiver transmits an impulse radio signal to a second transceiver. A power control update is calculated according to a performance measurement of the signal received at the second transceiver. The transmitter power of either transceiver, depending on the particular embodiment, is adjusted according to the power control update. Various performance measurements are employed according to the current invention to calculate a power control update, including bit error rate, signal-to-noise ratio, and received signal strength, used alone or in combination. Interference is thereby reduced, which is particularly important where multiple impulse radios are operating in close proximity and their transmission interfere with one another. Reducing the transmitter power of each radio to a level that produces satisfactory reception increases the total number of radios that can operate in an area without saturation. Reducing transmitter power also increases transceiver efficiency.

摘要翻译： 一种用于脉冲无线电功率控制的系统和方法，其中第一收发器向第二收发器发送脉冲无线电信号。 根据在第二收发器处接收到的信号的性能测量来计算功率控制更新。 取决于特定实施例的任一收发器的发射机功率根据功率控制更新进行调整。 根据本发明采用各种性能测量来计算单独或组合使用的功率控制更新，包括误码率，信噪比和接收信号强度。 因此，减少了干扰，这在多个脉冲无线电正在紧密地操作并且它们的传输彼此干扰的情况下是特别重要的。 将每个无线电台的发射机功率降低到产生令人满意的接收的水平，可以增加无饱和区域中可以工作的无线电总数。 降低发射机功率也可以提高收发机的效率。

公开(公告)号：US06297773B1

公开(公告)日：2001-10-02

申请号：US09517161

申请日：2000-04-05

申请人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie

发明人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie

IPC分类号： G01S302

CPC分类号： H04B1/7183 ,  G01S13/42 ,  G01S13/76 ,  H04B2001/6908

摘要： A system and a method for position determination by impulse radio using a first transceiver having a first clock providing a first reference signal and a second transceiver placed spaced from the first transceiver. The system determines the position of the second transceiver. The second transceiver has a second clock that provides a second reference signal. A first sequence of pulses are transmitted from the first transceiver. The first sequence of pulses are then received at the second transceiver and the second transceiver is then synchronized with the first sequence of pulses. A second sequence of pulses are transmitted from the second transceiver. The first transceiver receives the second sequence of pulses and the first transceiver is synchronized with the second sequence of pulses. A delayed first reference signal is generated in response to the synchronization with the second sequence of pulses. A time difference between the delayed first reference signal and the first reference signal is then measured. The time difference indicates a total time of flight of the first and second sequence of pulses. The distance between the first and the second transceiver is determined from the time difference. The direction of the second transceiver from the first transceiver is determined using a directional antenna. Finally, the position of the second transceiver is determined using the distance and the direction.

摘要翻译： 一种利用具有提供第一参考信号的第一时钟和与第一收发器间隔开的第二收发器的第一收发器的脉冲无线电定位的系统和方法。 该系统确定第二收发器的位置。 第二收发器具有提供第二参考信号的第二时钟。 从第一收发器发送第一脉冲序列。 然后在第二收发器处接收第一脉冲序列，然后第二收发器与第一脉冲序列同步。 从第二收发器发送第二脉冲序列。 第一收发器接收第二脉冲序列，并且第一收发器与第二脉冲序列同步。 响应于与第二脉冲序列的同步而产生延迟的第一参考信号。 然后测量延迟的第一参考信号和第一参考信号之间的时间差。 时间差表示第一和第二脉冲序列的总飞行时间。 从时差确定第一和第二收发器之间的距离。 使用定向天线确定来自第一收发器的第二收发器的方向。 最后，使用距离和方向来确定第二收发器的位置。

公开(公告)号：US07495613B2

公开(公告)日：2009-02-24

申请号：US11979191

申请日：2007-10-31

申请人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie

发明人： Larry W. Fullerton ,  James L. Richards ,  Ivan A. Cowie

IPC分类号： G01S3/02

CPC分类号： H04B1/7183 ,  G01S13/42 ,  G01S13/76 ,  H04B2001/6908

摘要： A system and a method for position determination by impulse radio using a first transceiver having a first clock providing a first reference signal and a second transceiver placed spaced from the first transceiver. The system determines the position of the second transceiver. The second transceiver has a second clock that provides a second reference signal. A first sequence of pulses are transmitted from the first transceiver. The first sequence of pulses are then received at the second transceiver and the second transceiver is then synchronized with the first sequence of pulses. A second sequence of pulses are transmitted from the second transceiver. The first transceiver receives the second sequence of pulses and the first transceiver is synchronized with the second sequence of pulses. A delayed first reference signal is generated in response to the synchronization with the second sequence of pulses. A time difference between the delayed first reference signal and the first reference signal is then measured. The time difference indicates a total time of flight of the first and second sequence of pulses. The distance between the first and the second transceiver is determined from the time difference. The direction of the second transceiver from the first transceiver is determined using a directional antenna. Finally, the position of the second transceiver is determined using the distance and the direction.

公开(公告)号：US07209724B2

公开(公告)日：2007-04-24

申请号：US11398951

申请日：2006-04-06

申请人： James L. Richards ,  Larry W. Fullerton ,  Ivan A. Cowie

发明人： James L. Richards ,  Larry W. Fullerton ,  Ivan A. Cowie

IPC分类号： H04Q7/20

CPC分类号： H04W52/362 ,  H04B1/7163 ,  H04B1/7183 ,  H04B2001/6908 ,  H04W52/20 ,  H04W52/24 ,  H04W52/241 ,  H04W52/367

摘要： A method for power control in an ultra wideband impulse radio system includes: (a) transmitting an impulse radio signal from a first transceiver; (b) receiving the impulse radio signal at a second transceiver; (c) determining at least one performance measurement of the received impulse radio signal; and (d) controlling output power of at least one of the first transceiver and the second transceiver in accordance with the at least one performance measurement.

摘要翻译： 一种超宽带脉冲无线电系统中的功率控制方法包括：（a）从第一收发器发送脉冲无线电信号; （b）在第二收发器处接收脉冲无线电信号; （c）确定接收到的脉冲无线电信号的至少一个性能测量; 以及（d）根据所述至少一个性能测量来控制所述第一收发器和所述第二收发器中的至少一个的输出功率。

公开(公告)号：US07079827B2

公开(公告)日：2006-07-18

申请号：US10409009

申请日：2003-04-08

申请人： James L. Richards ,  Larry W. Fullerton ,  Ivan A. Cowie

发明人： James L. Richards ,  Larry W. Fullerton ,  Ivan A. Cowie

IPC分类号： H04Q7/20

CPC分类号： H04W52/362 ,  H04B1/7163 ,  H04B1/7183 ,  H04B2001/6908 ,  H04W52/20 ,  H04W52/24 ,  H04W52/241 ,  H04W52/367

摘要： A method for power control in an ultra wideband impulse radio system includes: (a) transmitting an impulse radio signal from a first transceiver; (b) receiving the impulse radio signal at a second transceiver; (c) determining at least one performance measurement of the received impulse radio signal; and (d) controlling output power of at least one of the first transceiver and the second transceiver in accordance with the at least one performance measurement.