公开(公告)号：US07937101B2

公开(公告)日：2011-05-03

申请号：US11844624

申请日：2007-08-24

申请人： Robert J. Corke ,  Apoorv Chaudhri ,  Trefor J. Delve ,  Ralf Hekmann ,  Daniel G. Prysby ,  Yadunandana N. Rao ,  Christopher G. Ware ,  Michael F. Zeleznik

发明人： Robert J. Corke ,  Apoorv Chaudhri ,  Trefor J. Delve ,  Ralf Hekmann ,  Daniel G. Prysby ,  Yadunandana N. Rao ,  Christopher G. Ware ,  Michael F. Zeleznik

IPC分类号： H04B7/02 ,  H04B7/00 ,  H04B7/216 ,  H04B7/212 ,  H04L1/02 ,  H04L12/28 ,  H04L12/56 ,  H04W72/00 ,  H04W4/00 ,  H04W40/00 ,  H04J1/00

CPC分类号： H04W72/02 ,  H04W72/0453 ,  H04W84/08

摘要： A wireless communication network is provided in which a plurality of radio devices achieve frequency diversity. By utilizing cognitive capability within the radio devices to iteratively select frequency sets, a lowest cardinality frequency set is generated and used to communicate amongst the plurality of radio devices. Each radio device can have different hardware, as the iterative selection of frequency set can take into account the different hardware capabilities of the radio devices.

摘要翻译： 提供了一种无线通信网络，其中多个无线电设备实现频率分集。 通过利用无线电设备内的认知能力来迭代地选择频率集合，生成最低基数频率集合并用于在多个无线电设备之间进行通信。 每个无线电设备可以具有不同的硬件，因为频率集合的迭代选择可以考虑到无线电设备的不同硬件能力。

公开(公告)号：US20090135969A1

公开(公告)日：2009-05-28

申请号：US11946734

申请日：2007-11-28

申请人： Robert J. Corke ,  Daniel G. Psysby

发明人： Robert J. Corke ,  Daniel G. Psysby

IPC分类号： H04L27/38

CPC分类号： H03M1/185

摘要： A method for use in a digital communications receiver for controlling an input signal level (200) into an analog-to-digital converter (ADC) initially receives a sample sequence (201) where a threshold crossing rate is measured as a percentage samples of an input signal that exceed the threshold (203). The error between the measured threshold crossing rate and a desired reference threshold crossing rate is calculated (205) and an error signal is then utilized in a feedback loop to control the receiver gain such that the error is reduced (207).

摘要翻译： 一种用于数字通信接收机中用于将输入信号电平（200）控制到模数转换器（ADC）中的方法最初接收样本序列（201），其中阈值交叉率被测量为百分比样本 输入信号超过阈值（203）。 计算测量的阈值交叉率与期望的参考阈值交叉率之间的误差（205），然后在反馈回路中利用误差信号来控制接收机增益，使得误差减小（207）。

公开(公告)号：US07068701B2

公开(公告)日：2006-06-27

申请号：US09867236

申请日：2001-05-29

申请人： Gregory Agami ,  Robert J Corke ,  Daniel G Prysby ,  Stefan Paun

发明人： Gregory Agami ,  Robert J Corke ,  Daniel G Prysby ,  Stefan Paun

IPC分类号： H04B1/69 ,  H04K1/00

CPC分类号： H04J13/10 ,  H04L25/03866 ,  H04L27/34

摘要： A long code scrambler has been provided to scramble the data bits prior to QAM mapping. Different data rates are accommodated by using different long code m-tuples sampled at the modulation symbol rate, where m equals 2, 4 or 6 for 4, 16 or 64 QAM, respectively. In order to support 1XEV-DV users employing multiple Walsh code channels, a long code 6-tuple sample is permutated, to further randomize the QAM symbols. As appropriate for the modulation order, 2, 4 or 6 bits of the permutated 6-tuple are applied to the data sequence. That is, in addition to randomizing the modulation symbols for a given code channel, each code channel will likely have unique QAM symbols at any given symbol time.

公开(公告)号：US08706133B2

公开(公告)日：2014-04-22

申请号：US12165586

申请日：2008-06-30

申请人： Robert J. Corke ,  Yuri Fridman ,  David G. Prysby ,  Michael F. Zeleznik

发明人： Robert J. Corke ,  Yuri Fridman ,  David G. Prysby ,  Michael F. Zeleznik

IPC分类号： H04W72/00 ,  H04B17/00

CPC分类号： H04B17/382 ,  H04B17/26 ,  H04B17/318

摘要： A method (300, 400) and a non-incumbent system (102) that selects a pilot signal candidate within the RF spectrum, determines a first ratio between a measured total power within the RF spectrum and a measured power level of the pilot signal candidate, measures a first difference between the first ratio and an expected ratio, processes the first difference to select a threshold difference value, and outputs the threshold difference value.

摘要翻译： 在RF频谱内选择导频信号候补的方法（300,400）和非在职系统（102）确定RF频谱内的测量总功率与导频信号候选的测量功率电平之间的第一比率 测量第一比率和预期比率之间的第一差值，处理第一差异以选择阈值差值，并输出阈值差值。

公开(公告)号：US08223699B2

公开(公告)日：2012-07-17

申请号：US11694808

申请日：2007-03-30

申请人： Yadunandana N. Rao ,  Apoorv Chaudhri ,  Robert J. Corke ,  Trefor J. Delve ,  Daniel G. Prysby ,  Christopher G. Ware ,  Michael F. Zeleznik

发明人： Yadunandana N. Rao ,  Apoorv Chaudhri ,  Robert J. Corke ,  Trefor J. Delve ,  Daniel G. Prysby ,  Christopher G. Ware ,  Michael F. Zeleznik

IPC分类号： H04W4/00 ,  H04W72/00

CPC分类号： H04W16/14 ,  H04Q2213/13098 ,  H04W48/16

摘要： A method (20,200) and apparatus (10) for detecting and identifying spectrum opportunities, including the steps of communicating a location of at least one node (12) to at least one base station (14) (24), transmitting a list of at least one channel from the at least one base station (14) to the at least one node (12) (26), and sensing the at least one channel from the list by the at least one node (12) (34). The method (20,200) also includes the steps of determining if the at least one channel is in use, and if the at least one channel is in use, determining the user of the at least one channel that is in use (38).

摘要翻译： 一种用于检测和识别频谱机会的方法（20,200）和装置（10），包括将至少一个节点（12）的位置传送到至少一个基站（14）（24）的步骤， 从所述至少一个基站（14）到所述至少一个节点（12）（26）的至少一个信道，以及由所述至少一个节点（12）（34）从所述列表感测所述至少一个信道。 所述方法（20,200）还包括确定所述至少一个信道是否在使用中的步骤，以及如果所述至少一个信道正在使用中，则确定所述至少一个正在使用的信道的用户（38）。

公开(公告)号：US07876868B2

公开(公告)日：2011-01-25

申请号：US11621384

申请日：2007-01-09

申请人： Colin D. Frank ,  Robert J. Corke ,  Jorge L. Seoane

发明人： Colin D. Frank ,  Robert J. Corke ,  Jorge L. Seoane

IPC分类号： H03D1/06 ,  H04K1/10

CPC分类号： H04L25/03159 ,  H04L27/2647

摘要： An interference contribution associated with a selected subcarrier of a plurality of subcarriers associated with a previously transmitted OFDM symbol or a current OFDM symbol is determined. A fast Fourier transform (FFT) output for the current OFDM symbol is also determined. The interference contribution is subtracted from the FFT output of the current OFDM symbol to form a modified FFT output.

摘要翻译： 确定与先前发送的OFDM符号或当前OFDM符号相关联的多个子载波中的选定子载波相关联的干扰贡献。 还确定了用于当前OFDM符号的快速傅里叶变换（FFT）输出。 从当前OFDM符号的FFT输出中减去干扰贡献，形成修正的FFT输出。

公开(公告)号：US20090325499A1

公开(公告)日：2009-12-31

申请号：US12165586

申请日：2008-06-30

申请人： Robert J. Corke ,  Yuri Fridman ,  David G. Prysby ,  Michael F. Zeleznik

发明人： Robert J. Corke ,  Yuri Fridman ,  David G. Prysby ,  Michael F. Zeleznik

IPC分类号： H04B17/00

CPC分类号： H04B17/382 ,  H04B17/26 ,  H04B17/318

摘要： A method (300, 400) and a non-incumbent system (102) that selects a pilot signal candidate within the RF spectrum, determines a first ratio between a measured total power within the RF spectrum and a measured power level of the pilot signal candidate, measures a first difference between the first ratio and an expected ratio, processes the first difference to select a threshold difference value, and outputs the threshold difference value.

摘要翻译： 在RF频谱内选择导频信号候补的方法（300,400）和非在职系统（102）确定RF频谱内的测量总功率与导频信号候选的测量功率电平之间的第一比率 测量第一比率和预期比率之间的第一差值，处理第一差异以选择阈值差值，并输出阈值差值。

公开(公告)号：US20090323835A1

公开(公告)日：2009-12-31

申请号：US12165597

申请日：2008-06-30

申请人： Yadunandana N. Rao ,  Apoorv Chaudhri ,  Robert J. Corke

发明人： Yadunandana N. Rao ,  Apoorv Chaudhri ,  Robert J. Corke

IPC分类号： H04L27/28

CPC分类号： H04L5/0062 ,  H04L5/0007 ,  H04L27/0012

摘要： Efficient frequency spectrum sharing between at least one incumbent communication system(s) (102, 104) and at least one cognitive radio (CR) system (106, 108) is provided. The CR unit includes OFDM detection (216) for detecting the presence of OFDM signals which indicate the presence of an incumbent communication system within the shared spectrum. The CR system (106) updates channel occupancy information in response to the detected OFDM signals so as not to interfere with the incumbent communication systems (102, 104).

摘要翻译： 提供了至少一个现有通信系统（102,104）和至少一个认知无线电（CR）系统（106,108）之间的有效的频谱共享。 CR单元包括用于检测表示共享频谱内现有通信系统的存在的OFDM信号的存在的OFDM检测（216）。 CR系统（106）响应于检测到的OFDM信号来更新信道占用信息，以便不干扰现有的通信系统（102,104）。

公开(公告)号：US07257171B2

公开(公告)日：2007-08-14

申请号：US11098208

申请日：2005-04-04

申请人： Steven C. Jasper ,  Robert J. Corke ,  Colin D. Frank ,  Isam R. Makhlouf

发明人： Steven C. Jasper ,  Robert J. Corke ,  Colin D. Frank ,  Isam R. Makhlouf

IPC分类号： H04L27/06 ,  H04B1/10

CPC分类号： H04L25/0224 ,  H04L27/2647

摘要： A system that includes a receiver (100) that is configured for: selecting (210) a set of demodulator output samples and a corresponding set of reference symbols; generating (220) a set of raw channel estimates based on the set of demodulator output samples and the corresponding set of reference symbols; subdividing (230) the set of raw channel estimates into a plurality of subsets; assigning and applying (240) a corresponding reference symbol magnitude quantization scheme to each subset; determining (250) a set of filter coefficients that is based on the quantization schemes applied to the subsets of raw channel estimates; and combining (260) the set of raw channel estimates with the set of filter coefficients to generate a channel estimate.

摘要翻译： 一种包括接收机（100）的系统，其被配置为：选择（210）一组解调器输出采样和相应的一组参考符号; 基于所述解调器输出样本集合和相应的参考符号集合来生成（220）一组原始信道估计; 将所述原始信道估计集合（230）细分为多个子集; 向每个子集分配和应用（240）对应的参考符号量化量化方案; 确定（250）基于应用于原始信道估计的子集的量化方案的一组滤波器系数; 以及将所述原始信道估计集合与所述滤波器系数集合（260）以生成信道估计。

公开(公告)号：US06820108B2

公开(公告)日：2004-11-16

申请号：US09949331

申请日：2001-09-07

申请人： Gregory Agami ,  Ron Rotstein ,  Robert J. Corke

发明人： Gregory Agami ,  Ron Rotstein ,  Robert J. Corke

IPC分类号： G06F750

CPC分类号： G06F7/535 ,  G06F2207/5355

摘要： In accordance with the preferred embodiment of the present invention a gain (A) is determined and utilized to cyclically converge upon a quotient (Q). More particularly, once A is determined, an estimate of QN is multiplied by Y to estimate {circumflex over (X)}N, where Q=X/Y. The value of {circumflex over (X)}N is then subtracted from X to determine an error (eN), which is multiplied by A. The value of AeN(n) is added to AeN(n−1) to produce an estimate of Q. Once convergence has occurred, the value for Q is output from the circuitry.

摘要翻译： 根据本发明的优选实施例，增益（A）被确定并用于循环地收敛于商（Q）。 更具体地，一旦确定了A，将QN的估计乘以Y来估计XN，其中Q = X / Y。 然后从X中减去XN的值以确定乘以A的误差（eN）。将AeN（n）的值加到AeN（n-1）以产生Q的估计。一旦发生收敛 ，Q的值从电路输出。