公开(公告)号：US08478325B2

公开(公告)日：2013-07-02

申请号：US13125625

申请日：2010-09-15

申请人： Neil McGowan ,  Marthinus Willem Da Silveira ,  Peter Zahariev Rashev

发明人： Neil McGowan ,  Marthinus Willem Da Silveira ,  Peter Zahariev Rashev

IPC分类号： H04B7/00

CPC分类号： H04L27/2623

摘要： Peak power reduction in transmit chains of radiocommunication devices is performed using a low sample rate. Filtering and, optionally, interpolation of a signal being processed for peak power reduction can be performed only in an error signal path or in both an error signal path and a primary signal path.

摘要翻译： 无线电通信设备的发射链中的峰值功率降低使用低采样率进行。 只能在误差信号路径中或在误差信号路径和主信号路径两者中进行正在处理的用于峰值功率降低的信号的滤波和可选的内插。

公开(公告)号：US20120290633A1

公开(公告)日：2012-11-15

申请号：US13106048

申请日：2011-05-12

申请人： Neil McGowan

发明人： Neil McGowan

IPC分类号： G06F17/10

CPC分类号： H03H17/0294 ,  H03H2017/0072

摘要： A spectrum agile radio having one or more variable digital filters is described. To quickly, yet accurately, retune the digital filter(s) a windowing function is applied to an ideal filter characteristic for each of one or more desired frequency bands to generate filter coefficients. Transitioning between coefficients of a previous filter and a current filter is handled to avoid problems associated with discontinuities in the signal processing.

摘要翻译： 描述具有一个或多个可变数字滤波器的频谱敏捷无线电装置。 为了快速而准确地重新调谐数字滤波器，将一个开窗函数应用于一个或多个所需频带中的每一个的理想滤波器特性以产生滤波器系数。 处理先前滤波器和当前滤波器的系数之间的转换以避免与信号处理中的不连续性有关的问题。

公开(公告)号：US08270547B2

公开(公告)日：2012-09-18

申请号：US12747407

申请日：2008-12-11

申请人： John P. Panicker ,  Gary D. Boudreau ,  Neil McGowan ,  Vish Nandlall

发明人： John P. Panicker ,  Gary D. Boudreau ,  Neil McGowan ,  Vish Nandlall

IPC分类号： H03D1/04

CPC分类号： H04L25/0236 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0618 ,  H04L5/0007 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/006 ,  H04L25/0206 ,  H04L25/0244 ,  H04L25/025 ,  H04L27/0008 ,  H04L27/2657

摘要： A method and system for wireless communication channel estimation. A frequency offset hypothesis is determined. An interchannel interference (“ICI”) matrix based on the frequency offset hypothesis is generated. Pilot channel estimates based on the ICI matrix are obtained. A correlation error of the pilot channel estimates to the frequency offset hypothesis is calculated. The correlation error is compared with a predetermined correlation error value. The frequency offset hypothesis is updated and the aforementioned steps are iteratively repeated if the correlation error is greater than the predetermined correlation error value. The pilot channel estimates are used to estimate the wireless communication channel.

摘要翻译： 一种用于无线通信信道估计的方法和系统。 确定频率偏移假设。 产生基于频率偏移假设的信道间干扰（“ICI”）矩阵。 获得基于ICI矩阵的导频信道估计。 计算导频信道估计与频率偏移假设的相关误差。 将相关误差与预定的相关误差值进行比较。 更新频率偏移假设，并且如果相关误差大于预定的相关误差值，则迭代地重复上述步骤。 导频信道估计用于估计无线通信信道。

公开(公告)号：US07139575B1

公开(公告)日：2006-11-21

申请号：US11020235

申请日：2004-12-27

申请人： Xixian Chen ,  Neil McGowan ,  Weigang Li ,  James R. Weisert ,  Sabeena Abdulmajeed

发明人： Xixian Chen ,  Neil McGowan ,  Weigang Li ,  James R. Weisert ,  Sabeena Abdulmajeed

IPC分类号： H04Q7/20

CPC分类号： H04W36/04 ,  H04W36/30

摘要： Initiation of a hard handoff at a mobile station from an overlay carrier to an underlying carrier in a wireless telecommunications system may be considered based on a first condition being satisfied. Once the first condition is satisfied, hard handoff may be initiated based on at least one of a plurality of further conditions being satisfied. Advantageously, the plurality of further conditions may be arranged to be independent of the total power received at the mobile station and, therefore, independent of loading.

摘要翻译： 可以基于满足第一条件来考虑在移动台从重叠载波到无线电信系统中的底层载波的硬切换。 一旦满足第一条件，就可以基于满足多个其他条件中的至少一个来启动硬切换。 有利地，多个其他条件可以被布置为独立于在移动站处接收的总功率，并且因此独立于负载。

公开(公告)号：US20060209674A1

公开(公告)日：2006-09-21

申请号：US11414269

申请日：2006-05-01

申请人： Xixian Chen ,  Neil McGowan ,  Muhammad Islam ,  Ning Guo ,  Hong Ren ,  Lltong Li

发明人： Xixian Chen ,  Neil McGowan ,  Muhammad Islam ,  Ning Guo ,  Hong Ren ,  Lltong Li

IPC分类号： H04J11/00 ,  H04B7/216

CPC分类号： H04W72/1289 ,  H04B1/7073 ,  H04B7/2618 ,  H04B7/2637 ,  H04B2201/70703 ,  H04J13/0048 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0014 ,  H04L1/0025 ,  H04L1/0029 ,  H04L1/0046 ,  H04L1/0068 ,  H04L1/0072 ,  H04L1/0073 ,  H04L1/08 ,  H04L1/1607 ,  H04L1/1809 ,  H04L2001/125 ,  H04W28/04 ,  H04W48/08 ,  H04W48/16 ,  H04W52/58 ,  H04W72/12 ,  H04W74/00 ,  H04W74/04

摘要： A forward link design is provided employing CDMA (code division multiple access) technologies in which time division multiplexing is employed between data and control information on the forward link to service multiple users per slot. Another forward link design employing CDMA (code division multiple access) technologies is provided in which code division multiplexing between data and control information is employed on the forward link to service multiple users per slot, which is preferably backwards compatible with legacy standards such as IS2000A. A reverse link design is also provided.

公开(公告)号：US06236864B1

公开(公告)日：2001-05-22

申请号：US09200759

申请日：1998-11-27

申请人： Neil McGowan ,  Xin Jin

发明人： Neil McGowan ,  Xin Jin

IPC分类号： H04B102

CPC分类号： H04B1/707 ,  H04B2201/70706

摘要： A peak power regulator is disclosed that functions within a Code Division Multiple Access (CDMA) transmitter to reduce peak power spikes within baseband signals while maintaining the average output power consistent with the average input power, controlling the out-of-band emissions, and maintaining the in-band signal quality within an acceptable degradation. In-phase and quadrature baseband signals are input to a delay block and an envelope magnitude predictor within the peak power regulator. The envelope magnitude predictor outputs an estimate for the magnitude of the envelope that will be generated when the inputted baseband signals are modulated. This estimate is input to a multiplier that generates a ratio by dividing the estimate by a maximum acceptable envelope magnitude. The ratio is subsequently input to a mapping table that outputs a scaling factor sufficient for reducing peak power spikes. The scaling factor is subsequently input to an optional mean power regulator that generates an instantaneous gain value sufficient to maintain the average output power level at the average input power level. This gain value is applied to two multipliers that are also input with delayed versions of the in-phase and quadrature baseband input signals. The outputs from these two multipliers, after being filtered within lowpass filters to remove out-of-band emissions caused by the scaling, are output from the peak power regulator. These peak power reduced outputs have any peak power spikes scale reduced while maintaining the average power constant.

摘要翻译： 公开了一种峰值功率调节器，其功能在码分多址（CDMA）发射机内，以降低基带信号内的峰值功率尖峰，同时保持与平均输入功率一致的平均输出功率，控制带外发射，并维持 带内信号质量可以降低。 同相和正交基带信号被输入到峰值功率调节器内的延迟块和包络幅度预测器。 包络幅度预测器输出当输入的基带信号被调制时将产生的包络幅度的估计。 该估计被输入到通过将估计除以最大可接受的包络幅度而产生比率的乘法器。 该比率随后被输入到映射表，其输出足以减少峰值功率尖峰的比例因子。 缩放因子随后被输入到可选的平均功率调节器，其产生足以将平均输出功率电平维持在平均输入功率电平的瞬时增益值。 该增益值被应用于同时和正交基带输入信号的延迟版本的两个乘法器。 从峰值功率调节器输出来自这两个乘法器的输出，在经过低通滤波器滤波以消除由缩放引起的带外发射之后。 这些峰值功率降低的输出在保持平均功率恒定的情况下具有任何峰值功率尖峰尺度减小。

公开(公告)号：US08972359B2

公开(公告)日：2015-03-03

申请号：US11303990

申请日：2005-12-19

申请人： Neil McGowan ,  Bradley John Morris ,  Edward Ken Kiu Mah

发明人： Neil McGowan ,  Bradley John Morris ,  Edward Ken Kiu Mah

IPC分类号： G06F17/00 ,  H03M7/30

CPC分类号： H04L1/0009 ,  H03M7/30 ,  H04L1/0028 ,  H04W88/08

摘要： A method and apparatus for compression of complex data signals within a telecommunications base station. The method includes representing a sample of a complex value discrete time signal using 2(L−N)−S mantissa bits and 2N+S exponent bits to realize peak output signal to noise ratios over a wider dynamic range compared to a conventional L-bit uniform quantization format. The increases in dynamic range and peak output SNR is achieved without increasing the average number of data bits per sample and with relatively simple computational effort.

摘要翻译： 一种用于压缩电信基站内复杂数据信号的方法和装置。 该方法包括使用2（L-N）-S尾数位和2N + S指数位来表示复值离散时间信号的样本，以在较宽的动态范围内实现峰值输出信噪比，与传统的L位 均匀量化格式。 实现动态范围和峰值输出SNR的增加，而不增加每个样本的平均数据位数，并以相对简单的计算工作量。

公开(公告)号：US08827194B2

公开(公告)日：2014-09-09

申请号：US11278516

申请日：2006-04-03

申请人： Edward J. Domanico ,  John Greening ,  Chris Lawrence ,  Neil McGowan ,  James Schaffer

发明人： Edward J. Domanico ,  John Greening ,  Chris Lawrence ,  Neil McGowan ,  James Schaffer

IPC分类号： B02C19/00 ,  B02C21/00

CPC分类号： B02C19/0068

摘要： A fluorescent bulb compactor and mercury vapor recovery system that allows for the safe collection and disposal of crushed or broken fluorescent lamps, while recovering substantially 100% of the hazardous mercury vapors contained within the lamps. A fluorescent lamp is inserted within a drum and broken into fragments by one or more blades, with the fragment falling to the bottom of the drum. The mercury vapors that are emitted from the broken fluorescent lamps are forced out of the drum by negative positive pressure created by a vacuum/filter assembly. Once through the filter assembly, which includes a HEPA filter and activated carbon filter, the gases are permitted to escape into the environment virtually 100% free of mercury toxins.

摘要翻译： 一种荧光灯泡压实机和水银蒸汽回收系统，可以安全地收集和处理破碎或破碎的荧光灯，同时回收灯中所含有的有害汞蒸气。 荧光灯被插入滚筒内并被一个或多个叶片分成碎片，碎片落到滚筒的底部。 从破碎的荧光灯发出的汞蒸气被真空/过滤器组件产生的负压力从鼓中排出。 一旦通过包括HEPA过滤器和活性炭过滤器的过滤器组件，允许气体逃逸到环境中，几乎100％没有汞毒素。

公开(公告)号：US08504109B2

公开(公告)日：2013-08-06

申请号：US09733059

申请日：2000-12-11

申请人： Neil McGowan ,  Peter Deane

发明人： Neil McGowan ,  Peter Deane

IPC分类号： H04M1/00

CPC分类号： H04W16/28 ,  H01Q1/246 ,  H01Q3/26 ,  H01Q3/40

摘要： Antenna systems are used for transmitting common overhead channels (pilot, sync, and paging channels) over a whole sector while transmitting and receiving unique traffic channels on individual beams in the sector. Each beam in the sector is transmitted at a frequency offset from other beams in the sector. The offset frequency is chosen such that the effect of cancellation of the pilot channel caused by the summing of signals from multiple beams is minimized. Alternative, each beam in the sector can have a time dependent phase offset relative to each other to minimize the effect of cancellation of the pilot channel caused by the summing of signals from multiple beams. System capacity is substantially increased since the number of traffic carrying beams per sector is increased without using more pilot channel PN offsets. Beams are fixed and the same antennas are used for the overhead channels as the traffic channels, obviating the need for complex algorithms and calibration procedures.

公开(公告)号：US08219076B2

公开(公告)日：2012-07-10

申请号：US11572434

申请日：2005-07-19

申请人： Ganesh Sundararajan ,  Edward Ken Kiu Mah ,  Neil McGowan

发明人： Ganesh Sundararajan ,  Edward Ken Kiu Mah ,  Neil McGowan

IPC分类号： H04W24/00 ,  H04B17/00

CPC分类号： H04W24/00

摘要： An access probe existing and generated within a base station to simulate a mobile terminal for the purpose of testing base station receive functionality within a communications system. The access probe data is injected at baseband rather than at RF to eliminate the need for analog/RF circuitry. The access probe performs injection at the front end of the base station receiver to exercise as much receive data path as possible. A unique ID is embedded in the access probes so that the communications system is aware which probes within a sequence were received successfully and at what power level. Within in-field applications, the unique ID allows the communications system to distinguish simulated access probes from those corresponding to real mobiles.

摘要翻译： 存在并在基站内生成的接入探针以模拟移动终端，以便测试基站在通信系统内接收功能。 接入探头数据在基带而不是射频注入，以消除对模拟/射频电路的需要。 接入探测器在基站接收机的前端执行注入以尽可能多的接收数据路径。 访问探针中嵌入了唯一的ID，以便通信系统知道序列中的哪些探针成功接收并以什么功率级别接收。 在现场应用中，唯一的ID允许通信系统将模拟的接入探针与对应于真实移动台的接入探头区分开。