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1. 发明授权

US07333455B1 Multiple input multiple output (MIMO) wireless communications system 有权
标题翻译：多输入多输出（MIMO）无线通信系统
公开(公告)号：US07333455B1
公开(公告)日：2008-02-19
申请号：US11115943
申请日：2005-04-27
申请人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
发明人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
IPC分类号： H04Q7/00
CPC分类号： H04B7/10 , H04B7/0669 , H04B7/0671 , H04B7/0673 , H04B7/0697 , H04L1/0003 , H04L1/0026 , H04L1/0618 , H04L25/0204 , H04L27/2601 , H04W52/42
摘要： A wireless broadband communications system that can transmit signals over communications links with multiple modes of diversity, thereby allowing signals having very low correlation to propagate over the link along multiple orthogonal paths. The system can be implemented as a non-line-of-sight (NLOS) system or a line-of-sight (LOS) system. The NLOS system employs orthogonal frequency division modulation (OFDM) waveforms to reduce multi-path interference and frequency selective fading, adaptive modulation to assure high data rates in the presence of channel variability, and spectrum management to achieve increased data throughput and link availability. The LOS system employs space-time coding and spatial and polarization diversity to minimize ground bounce nulls. The system achieves levels of link availability, data throughput, and system performance that have heretofore been unattainable in wireless broadband communications systems.
摘要翻译：一种能够通过具有多种分集模式的通信链路传输信号的无线宽带通信系统，从而允许具有非常低的相关性的信号沿多个正交路径在链路上传播。该系统可以实现为非视距（NLOS）系统或视线（LOS）系统。 NLOS系统采用正交频分调制（OFDM）波形，以减少多径干扰和频率选择性衰落，自适应调制，以确保在存在信道变异性的情况下保证高数据速率，以及频谱管理，以实现增加的数据吞吐量和链路可用性。 LOS系统采用空时编码和空间和极化多样性来最小化地面反弹零点。该系统实现了无线宽带通信系统中迄今无法实现的链路可用性，数据吞吐量和系统性能水平。

2. 发明授权

US07469013B1 Intelligent adaptive modulation in a multiple input multiple output (MIMO) wireless communications system 有权
标题翻译：多输入多输出（MIMO）无线通信系统中的智能自适应调制
公开(公告)号：US07469013B1
公开(公告)日：2008-12-23
申请号：US11116115
申请日：2005-04-27
申请人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
发明人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L1/20 , H04L1/0003 , H04L1/0618
摘要： A wireless broadband communications system that can maintain high data rates while taking into account channel interference resulting from operating in shared frequency bands, signal fading resulting from dynamic channel degradation, and signal distortion resulting from compliance with maximum power output regulations. In one mode of operation, the system performs adaptive modulation by transmitting a first signal over a selected channel using a first modulation mode having a level of distortion associated therewith resulting from operating the system at a predetermined maximum power output level. Next, a SINAD level is measured on the first channel. The level of distortion associated with the first modulation mode is then subtracted from the measured SINAD level to obtain a first noise level. In the event the first noise level is less than a noise level required to achieve an acceptable error rate in a next modulation mode, a second signal is transmitted over the selected channel using the next modulation mode.
摘要翻译：一种无线宽带通信系统，其可以在考虑到在共享频带中操作导致的信道干扰时保持高数据速率，由于动态信道衰减而引起的信号衰落以及由符合最大功率输出规则而引起的信号失真。在一种操作模式中，系统通过使用具有与其相关联的失真水平的第一调制模式，在所选择的信道上发送第一信号来执行自适应调制，这是由于在预定的最大功率输出电平下操作系统。接下来，在第一通道上测量SINAD电平。然后从测量的SINAD电平中减去与第一调制模式相关联的失真电平以获得第一噪声电平。在第一噪声电平小于在下一个调制模式下实现可接受的误码率所需的噪声电平的情况下，使用下一个调制模式在所选择的信道上发送第二信号。

3. 发明授权

US07330698B1 Intelligent spectrum management in a multiple input multiple output (MIMO) wireless communications system 有权
标题翻译：多输入多输出（MIMO）无线通信系统中的智能频谱管理
公开(公告)号：US07330698B1
公开(公告)日：2008-02-12
申请号：US11115979
申请日：2005-04-27
申请人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
发明人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
IPC分类号： H04Q7/20
CPC分类号： H04W16/10 , H04W24/00 , H04W24/06 , H04W72/08
摘要： A wireless broadband communications system that increases data throughput and link availability through more efficient use of the electromagnetic spectrum allocated to the system. In one mode of operation, the system periodically measures a noise or interference level associated with each one of a plurality of communications channels, and generates a histogram of the measurements associated with each channel. Next, the system determines a noise/interference level estimate for each channel as a predetermined percentile of the histogram associated with the respective channel. The system then selects a respective one of the channels having the lowest noise/interference level estimate for subsequent signal transmission.
摘要翻译：一种无线宽带通信系统，其通过更有效地使用分配给系统的电磁频谱来增加数据吞吐量和链路可用性。在一种操作模式中，系统周期性地测量与多个通信信道中的每一个相关联的噪声或干扰电平，并且生成与每个信道相关联的测量的直方图。接下来，系统将每个信道的噪声/干扰电平估计确定为与相应信道相关联的直方图的预定百分位数。然后，系统选择具有最低噪声/干扰电平估计的相应一个信道用于随后的信号传输。

4. 发明授权

US07330697B1 Installation technique for a multiple input multiple output (MIMO) wireless communications systems 有权
标题翻译：多输入多输出（MIMO）无线通信系统的安装技术
公开(公告)号：US07330697B1
公开(公告)日：2008-02-12
申请号：US11115973
申请日：2005-04-27
申请人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
发明人： Philip A. Bolt , Timothy G. Wild , Gregor R. Dean , Paul Clark , Peter N. Strong , Richard A. Carter , Antony C. Holmes , Colin H. V. Spier , Nigel J. R. King
IPC分类号： H04Q7/20
CPC分类号： H04W16/10 , H04W24/00 , H04W24/06 , H04W72/08
摘要： Techniques for facilitating and reducing the costs associated with the installation of a wireless broadband communications system. In one mode of operation, the system employs a first transceiver to identify n channels having the n lowest levels of noise and interference associated therewith by a spectrum management technique. Next, the first transceiver transmits a predetermined code over the n channels to a second transceiver, which attempts to identify the predetermined code within a captured transmission. In the event the code is correctly identified, the second transceiver measures a noise and/or interference level associated with the corresponding channels. The channel having the lowest measured noise and interference level is then selected for use in system installation.
摘要翻译：用于促进和减少与安装无线宽带通信系统有关的成本的技术。在一种操作模式中，系统采用第一收发器来通过频谱管理技术来识别具有与其相关联的n个最低等级的噪声和干扰的n个信道。接下来，第一收发器将n个信道上的预定码发送到第二收发信机，该第二收发信机试图在捕获的传输中识别预定码。在代码被正确识别的情况下，第二收发器测量与相应信道相关联的噪声和/或干扰电平。然后选择具有最低测量噪声和干扰电平的通道用于系统安装。

5. 发明授权

US08982523B2 Bias voltage circuit for biasing a transient suppression device and apparatus using same 有权
标题翻译：用于偏置瞬态抑制装置的偏压电路和使用它的装置
公开(公告)号：US08982523B2
公开(公告)日：2015-03-17
申请号：US13034934
申请日：2011-02-25
申请人： Alexander C. Kidger , Nigel J. R. King , Timothy G. Wild
发明人： Alexander C. Kidger , Nigel J. R. King , Timothy G. Wild
IPC分类号： H02H3/22 , H04B3/00
CPC分类号： H02H9/005 , H04B3/00
摘要： Embodiments provide a charge pump circuit which produces a bias voltage that is applied to a transient suppression device used to clamp both positive and negative transients on signal lines. The bias voltage can be set to a level that is above the sum of a DC voltage differential between positive and negative signal lines and the maximum signal voltage.
摘要翻译：实施例提供一种电荷泵电路，其产生施加到用于钳位信号线上的正和负瞬变的瞬态抑制装置的偏置电压。偏置电压可以设置为高于正和负信号线之间的直流电压差和总信号电压之和的电平。

6. 发明申请

US20120218668A1 BIAS VOLTAGE CIRCUIT FOR BIASING A TRANSIENT SUPPRESSION DEVICE AND APPARATUS USING SAME 有权
标题翻译：用于偏移瞬态抑制装置的偏压电路和使用其的装置
公开(公告)号：US20120218668A1
公开(公告)日：2012-08-30
申请号：US13034934
申请日：2011-02-25
申请人： Alexander C. Kidger , Nigel J. R. King , Timothy G. Wild
发明人： Alexander C. Kidger , Nigel J. R. King , Timothy G. Wild
IPC分类号： H02H9/04
CPC分类号： H02H9/005 , H04B3/00
摘要： Embodiments provide a charge pump circuit which produces a bias voltage that is applied to a transient suppression device used to clamp both positive and negative transients on signal lines. The bias voltage can be set to a level that is above the sum of a DC voltage differential between positive and negative signal lines and the maximum signal voltage.
摘要翻译：实施例提供一种电荷泵电路，其产生施加到用于钳位信号线上的正和负瞬变的瞬态抑制装置的偏置电压。偏置电压可以设置为高于正和负信号线之间的直流电压差和总信号电压之和的电平。

7. 发明授权

US5079521A Fractional-N frequency synthesizer using delta-sigma modulator in divider control circuit 失效
标题翻译：在分路器控制电路中使用DELTA-SIGMA调制器的分数N频率合成器
公开(公告)号：US5079521A
公开(公告)日：1992-01-07
申请号：US616861
申请日：1990-11-21
申请人： Philip S. Gaskell , Nigel J. R. King , Eric Breakenridge , Michael J. Ball
发明人： Philip S. Gaskell , Nigel J. R. King , Eric Breakenridge , Michael J. Ball
IPC分类号： H03L7/197
CPC分类号： H03L7/1976
摘要： A fractional-N frequency synthesizer having a programmable divider and a control circuit therefor, wherein said control circuit incorporates a digital delta-sigma modulator operating as an interpolator.

8. 发明授权

US4639733A Direction finding 失效
标题翻译：方向发现
公开(公告)号：US4639733A
公开(公告)日：1987-01-27
申请号：US609232
申请日：1984-05-11
申请人： Nigel J. R. King , Ian W. N. Pawson , Michael P. Baker , Robert N. Shaddock , Edward V. Stansfield
发明人： Nigel J. R. King , Ian W. N. Pawson , Michael P. Baker , Robert N. Shaddock , Edward V. Stansfield
IPC分类号： G01S3/48 , G01S5/02
CPC分类号： G01S3/48
摘要： An interferometer type DF system uses an array of five antennas (A,B,C,D,E) arranged at the apices of a regular pentagon to define five wide apertures along the sides of the pentagon and a further five apertures along the diagonals. The phases of the signals received by each antenna, are measured modulo 2.pi. and processed to give a unique bearing of the radio source to the accuracy of the widest aperture defined by the array. One method of processing the phases is to calculate from them the Fourier coefficients of the Fourier series representing the spatial phase distribution. By comparing the difference between each calculated coefficient and a corresponding order coefficient of a set of imaginary antenna phases expressed as integral multiples of 2.pi., the complete 2.pi. phase differences between the measured phases modulo 2.pi. can be found. The bearing angle of the received signal is then the phase of the vector resulting from subtracting the first order Fourier coefficient of the integral phases from the calculated first order coefficient.
摘要翻译：干涉仪型DF系统使用布置在正五边形顶点的五根天线（A，B，C，D，E）的阵列，以沿着五边形的侧面限定五个宽的孔，以及沿对角线的另外五个孔。由每个天线接收的信号的相位被模2 pi测量，并被处理以给予无线电源的独特的轴承以由阵列限定的最宽孔的精度。处理相位的一种方法是从它们计算表示空间相位分布的傅里叶级数的傅立叶系数。通过比较表示为2 pi的整数倍的一组虚拟天线相位的每个计算系数和相应的次序系数之间的差异，可以找到所测量的相位2 pi之间的完整2 pi相位差。接收信号的方位角就是从计算出的一阶系数中减去积分相位的一阶傅里叶系数得到的向量的相位。

9. 发明授权

US4204174A Phase locked loop variable frequency generator 失效
标题翻译：锁相环变频发生器
公开(公告)号：US4204174A
公开(公告)日：1980-05-20
申请号：US959240
申请日：1978-11-09
申请人： Nigel J. R. King
发明人： Nigel J. R. King
IPC分类号： H03L7/197 , H03B3/04
CPC分类号： H03L7/1976
摘要： The invention relates to phase locked loops in which a variable-frequency voltage-controlled oscillator (VCO) feeds a phase comparator via an adjustable divider having a division factor N. The comparator compares the phases of the divided frequency (Fd) and a reference frequency (Fr), and adjusts the VCO to produce phase equality. To enable the VCO frequency (FO) to be adjusted in smaller steps than Fr and yet maintain a loop bandwidth greater than the step size with good spurious performance (thus providing a "fractional N synthesizer"), Fo is made slightly more than N.Fr. The phase detector thus produces a phase error signal. At periodic instants, determined by the period of the frequency difference between Fo and N.Fr, a control unit temporarily increases N by unity so as to bring Fd and Fr into phase. To eliminate the sawtooth waveform that would otherwise be produced on the phase error signal, the control unit also produces unit increases in N during each such period so as to produce a phase difference between Fd and Fr which is opposite in sign to, and substantially offsets, the integrated value of the phase differences up to that instant. The phase error signal therefore undergoes only residual variations, and these are backed off by an analogue output derived from the control unit.
摘要翻译：本发明涉及锁相环，其中可变频压控振荡器（VCO）经由具有分频因子N的可调分频器馈送相位比较器。比较器比较分频频率（Fd）和参考频率（Fr），并调整VCO以产生相位相等。为了使VCO频率（FO）以比Fr更小的步长进行调整，并且保持环路带宽大于步进大小，具有良好的寄生性能（从而提供“分数N合成器”），则使Fo略大于N. Fr. 因此，相位检测器产生相位误差信号。在按照Fo和N.Fr之间的频率差的周期确定的周期性时刻，控制单元暂时将N逐个增加，以使Fd和Fr进入相位。为了消除否则将在相位误差信号上产生的锯齿波形，控制单元还在每个这样的时间段期间产生N的单位增加，从而在Fd和Fr之间产生相反的相位差，该相位差在符号相反时基本上偏移，相位差的积分值直到那一瞬间。因此，相位误差信号仅经历残余变化，并且这些变化由来自控制单元的模拟输出退出。

10. 发明授权

US07656956B2 Data, power and supervisory signaling over twisted pairs 有权
标题翻译：数据，电源和双绞线上的监控信号
公开(公告)号：US07656956B2
公开(公告)日：2010-02-02
申请号：US11251383
申请日：2005-10-14
申请人： Nigel J. R. King
发明人： Nigel J. R. King
IPC分类号： H04B3/00
CPC分类号： H04L5/20
摘要： A system and method for conveying supervisory signaling and power over the same twisted wire pairs in a cable as are used to carry data communications in accordance with a predetermined communications protocol. Supervisory signals having first and second differential components are generated. The first component is coupled to both wires of one of the twisted wire pairs as a common mode signal and the second component of the supervisory signal is coupled to both wires of another twisted pair as a common mode signal. The first and second components are recovered at the remote end of the cable. Physical interfaces are AC coupled to the respective twisted pairs at both ends of the cable and positive and negative voltage rails powered by a power sourcing device are coupled to predetermined twisted pairs to convey a DC voltage over the cable which may be used to power a remote electronic device.
摘要翻译：用于通过电缆中的相同双绞线传输监控信令和电力的系统和方法，用于根据预定的通信协议进行数据通信。产生具有第一和第二差分分量的监控信号。第一组件耦合到双绞线对之一的两条线作为共模信号，并且监控信号的第二分量耦合到另一双绞线的两条线作为共模信号。第一和第二组件在电缆的远端被恢复。物理接口在电缆的两端被交流耦合到相应的双绞线，并且由电源装置供电的正电压和负电压轨耦合到预定的双绞线，以在电缆上传送直流电压，该电压可用于为远程电子设备。

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