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1. 发明授权

US07876868B2 System and method for reducing interference in an orthogonal frequency division modulation system 有权
标题翻译：用于减少正交频分调制系统中的干扰的系统和方法
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。

2. 发明授权

US07257171B2 Method and apparatus for reference symbol aided channel estimation 有权
标题翻译：参考符号辅助信道估计的方法和装置
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。

3. 发明授权

US07489733B2 Channel estimation using a minimized channel prediction interval 有权
标题翻译：使用最小化信道预测间隔的信道估计
公开(公告)号：US07489733B2
公开(公告)日：2009-02-10
申请号：US11108291
申请日：2005-04-18
申请人： Colin D. Frank , Robert J. Corke , Steven C. Jasper , Isam R. Makhlouf
发明人： Colin D. Frank , Robert J. Corke , Steven C. Jasper , Isam R. Makhlouf
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L25/0236 , H04L27/2647
摘要： A receiver configured for: a) receiving (410) a first OFDM symbol and generating a plurality of demodulated symbols for the first OFDM symbol; b) generating (420) decoder output code symbols corresponding to a subset of the plurality of demodulated symbols; c) determining (430) that a set of the decoder output code symbols make up a set of reference symbols corresponding to at least a portion of the subset of the plurality of demodulated symbols; d) generating (440) the set of reference symbols; e) generating (450) a set of channel estimates based on the set of reference symbols and the at least a portion of the subset of the plurality of demodulated symbols, for use in decoding a current OFDM symbol; and f) repeating steps b-e until a channel estimate for each demodulated symbol corresponding to the first OFDM symbol has been generated.
摘要翻译：一种接收机，被配置用于：a）接收（410）第一OFDM符号并产生用于所述第一OFDM符号的多个解调符号; b）产生（420）对应于所述多个解调符号的子集的解码器输出码符号; c）确定（430）一组解码器输出码符号组成对应于多个解调符号的子集的至少一部分的一组参考符号; d）产生（440）所述参考符号集合; e）基于参考符号集合和所述多个解调符号的子集的至少一部分来生成（450）一组信道估计，用于解码当前OFDM符号; 以及f）重复步骤b-e，直到已经产生对应于第一OFDM符号的每个解调符号的信道估计为止。

4. 发明授权

US07937101B2 System and method for performing communication in a wireless communication network 有权
标题翻译：用于在无线通信网络中执行通信的系统和方法
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。

5. 发明申请

US20090135969A1 METHOD AND APPARATUS FOR COMPLEMENTARY CUMULATIVE DISTRIBUTION DRIVEN LEVEL CONVERGENCE FOR SPECTRUM SENSING 失效
标题翻译：用于频谱感测的补充分布分布驱动水平收敛的方法和装置
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）。

6. 发明授权

US08306162B2 Method and apparatus for complementary cumulative distribution driven level convergence for spectrum sensing 失效
标题翻译：用于频谱感测的互补累积分布驱动级收敛的方法和装置
公开(公告)号：US08306162B2
公开(公告)日：2012-11-06
申请号：US11946734
申请日：2007-11-28
申请人： Robert J. Corke , Daniel G. Prysby
发明人： Robert J. Corke , Daniel G. Prysby
IPC分类号： H04L27/08
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）。

7. 发明申请

US20080118012A1 METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：无线通信系统干扰消除的方法和装置
公开(公告)号：US20080118012A1
公开(公告)日：2008-05-22
申请号：US11562639
申请日：2006-11-22
申请人： Robert J. Corke , Daniel G. Prysby , Michael F. Zeleznik
发明人： Robert J. Corke , Daniel G. Prysby , Michael F. Zeleznik
IPC分类号： H04B1/10 , H04L27/28
CPC分类号： H04L27/2647 , H04L1/0045 , H04L27/2662 , H04W28/18
摘要： Described is a method and an apparatus for performing the method to cancel interference caused by a windowing function applied to a signal prior to the signal being transmitted in a wireless communication system such as an OFDM system. The apparatus includes receiver apparatus that receives the signal to which the windowing function was applied. The apparatus further includes a processing device coupled to the receiver apparatus, and the processing device obtains (either by generating in substantially real time or retrieving from a storage device coupled to the processing device) a plurality of coefficients that are derived from the windowing function, and applies the coefficients to the received signal to cancel at least a portion of the interference from the received signal.
摘要翻译：描述了一种用于在诸如OFDM系统的无线通信系统中执行用于消除在信号被发送之前应用于信号的加窗函数所引起的干扰的方法和装置。该装置包括接收装置，其接收应用了加窗功能的信号。该装置还包括耦合到接收机装置的处理装置，并且处理装置获得（通过基本上实时生成或从耦合到处理装置的存储装置检索）从加窗功能导出的多个系数，并将系数应用于接收到的信号以从接收到的信号中消除干扰的至少一部分。

8. 发明授权

US07046617B2 Method and apparatus for an enhanced OFDM system 有权
标题翻译：用于增强OFDM系统的方法和装置
公开(公告)号：US07046617B2
公开(公告)日：2006-05-16
申请号：US10806308
申请日：2004-03-22
申请人： Ron Rotstein , Robert J. Corke , Arie Z. Schwartzman
发明人： Ron Rotstein , Robert J. Corke , Arie Z. Schwartzman
IPC分类号： H04J11/00
CPC分类号： H04B7/08 , H04B7/06 , H04L27/2602
摘要： A method and apparatus for communicating in an OFDM system whereby data subcarriers associated with a first antenna of at least two transmit antennas are multiplexed with data symbols while modulating other subcarriers associated with other antennas with zero. The data subcarriers are separated between the at least two transmit antennas so that a data subcarrier and a mirror data subcarrier are not transmitted from a same transmit antenna and that adjacent data subcarriers are at least two subcarrier frequency bandwidths apart. In an embodiment, the method and apparatus further comprise receiving the transmitted subcarriers from at least two receive antennas where the transmitted data subcarriers are also separated so that the data subcarrier and the mirror data subcarrier are not received from a same receive antenna of the at least two receive antennas. The method and apparatus further comprises combining the received transmitted subcarriers from the at least two receive antennas into a single data stream.
摘要翻译：一种用于在OFDM系统中通信的方法和装置，由此与至少两个发射天线的第一天线相关联的数据子载波与数据符号多路复用，同时调制与其他天线相关联的其它子载波为零。数据副载波在至少两个发射天线之间分离，使得数据副载波和镜像数据副载波不从相同的发射天线发射，相邻的数据副载波间隔至少两个副载波频率带宽。在一个实施例中，所述方法和装置还包括从至少两个接收天线接收所发送的子载波，其中发送的数据子载波也被分离，使得数据子载波和镜像数据子载波不从至少至少两个接收天线两个接收天线。所述方法和装置还包括将来自所述至少两个接收天线的所接收的发送子载波组合成单个数据流。

9. 发明授权

US08451917B2 Method and apparatus for detection of orthogonal frequency division multiplexing (OFDM) signals by cognitive radios 有权
标题翻译：通过认知无线电检测正交频分复用（OFDM）信号的方法和装置
公开(公告)号：US08451917B2
公开(公告)日：2013-05-28
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： H04K1/10
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）。

10. 发明授权

US08300673B2 System, method and apparatus for managing communication in a public safety communication network 有权
标题翻译：用于管理公共安全通信网络中的通信的系统，方法和装置
公开(公告)号：US08300673B2
公开(公告)日：2012-10-30
申请号：US11844669
申请日：2007-08-24
申请人： Ralf Hekmann , Robert J. Corke , Trefor J. Delve , Daniel G. Prysby , Christopher G. Ware , Michael F. Zeleznik
发明人： Ralf Hekmann , Robert J. Corke , Trefor J. Delve , Daniel G. Prysby , Christopher G. Ware , Michael F. Zeleznik
IPC分类号： H04B1/00
CPC分类号： H04B1/715 , H04B1/7136 , H04B2001/7154
摘要： A method, system and apparatus for managing communication in a Public Safety Communication Network (PSCN). The PSCN includes a plurality of Mobile Stations (MSs) (110, 115, 120) and a master controller (105). The method includes initiating a communication between one or more MSs and the master controller using a primary channel (405). The primary channel corresponds to a primary frequency spectrum in the PSCN. The method further includes identifying one or more available channels in one or more of the primary frequency spectrum and a secondary frequency spectrum (410). Each of the primary frequency spectrum and the secondary frequency spectrum include one or more channels. Thereafter, a channel hopping pattern is generated for one or more MSs based on one or more available channels (415). The channel hopping pattern corresponds to a sequence of frequency hops for a MS.
摘要翻译：一种用于管理公共安全通信网络（PSCN）中的通信的方法，系统和装置。 PSCN包括多个移动站（MS）（110,115,120）和主控制器（105）。该方法包括使用主信道（405）发起一个或多个MS与主控制器之间的通信。主信道对应于PSCN中的主频谱。该方法还包括识别一个或多个主频谱和次频谱中的一个或多个可用信道（410）。主频谱和次频谱中的每一个包括一个或多个信道。此后，基于一个或多个可用信道（415）为一个或多个MS生成信道跳频模式。信道跳频模式对应于MS的跳频序列。

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