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1.发明授权Method and system for mitigating interference between different radio access technologies utilized by a communication device 有权用于减轻由通信设备使用的不同无线电接入技术之间的干扰的方法和系统公开(公告)号：US09503245B1
公开(公告)日：2016-11-22
申请号：US14136860
申请日：2013-12-20
发明人： Jihwan P. Choi , Hui-Ling Lou , Leilei Song , Yakun Sun , Qing Zhao
CPC分类号： H04L5/0062 , H04L5/0028
摘要： Various methods and apparatus are disclosed for mitigating interference between communications between different radio access technologies in a communication device. Methods and apparatus include communicating between a first communication device and a second communication device according to a first communication protocol, and communicating between the first communication device and a third communication device according to a second communication protocol. The methods and apparatus further include determining a first time interval associated with when data is to be transmitted between the first communication device and the second communication device according to the first communications protocol. The methods and apparatus also include sending to the third communication device, an indication of a second time interval to prompt the third communication device not transmit to the first communication device during the second time interval, wherein the second time interval corresponds to the first time interval.
摘要翻译： 公开了用于减轻通信设备中的不同无线电接入技术之间的通信之间的干扰的各种方法和装置。 方法和装置包括根据第一通信协议在第一通信设备和第二通信设备之间进行通信，以及根据第二通信协议在第一通信设备和第三通信设备之间进行通信。 所述方法和装置还包括确定与根据第一通信协议在第一通信设备和第二通信设备之间传输数据相关联的第一时间间隔。 所述方法和装置还包括向第三通信设备发送第二时间间隔的指示，以在第二时间间隔期间促使第三通信设备不发送到第一通信设备，其中第二时间间隔对应于第一时间间隔 。
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2.发明授权Systems and methods for detecting a primary synchronization signal in a wireless communication system 有权用于在无线通信系统中检测主同步信号的系统和方法公开(公告)号：US09451569B1
公开(公告)日：2016-09-20
申请号：US14022739
申请日：2013-09-10
发明人： Chusong Xiao , Qing Zhao , Manyuan Shen , Leilei Song , Hui-Ling Lou
CPC分类号： H04W56/001 , H04J11/0073 , H04J11/0076
摘要： Systems and methods are provided for detecting a received synchronization signal. The method includes receiving, at a receiver, a signal from a transmitter and the signal includes the received synchronization signal. The method includes processing the received signal and a plurality of candidate synchronization signals to obtain a plurality of correlation signals. Each candidate synchronization signal is associated with one of the plurality of correlation signals. The method includes selecting, based at least in part on the plurality of correlation signals, one of the plurality of candidate synchronization signals. The selected candidate synchronization signal is correlated with the received synchronization signal. The method includes detecting the received synchronization signal based at least in part on (i) the received signal, and (ii) a characteristic obtained from the correlation signal that is associated with the selected candidate synchronization signal.
摘要翻译： 提供了用于检测所接收的同步信号的系统和方法。 该方法包括在接收机处接收来自发射机的信号，该信号包括所接收的同步信号。 该方法包括处理接收信号和多个候选同步信号以获得多个相关信号。 每个候选同步信号与多个相关信号之一相关联。 所述方法包括至少部分地基于所述多个相关信号来选择所述多个候选同步信号中的一个。 所选择的候选同步信号与所接收的同步信号相关。 该方法至少部分地基于（i）接收信号检测接收到的同步信号，以及（ii）从与所选候选同步信号相关联的相关信号获得的特性。
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3.发明授权Method and apparatus for adjusting a gain of a receiver in a wireless device 有权用于调整无线设备中的接收机的增益的方法和装置公开(公告)号：US09094843B1
公开(公告)日：2015-07-28
申请号：US14319133
申请日：2014-06-30
发明人： Vladan Petrovic , Manyuan Shen , Qing Zhao , Leilie Song
CPC分类号： H04W24/00 , G06F17/142 , H03G3/3089 , H04B1/69 , H04B17/21 , H04B17/318 , H04L5/0023 , H04L5/0048 , H04L27/265 , H04L27/3809 , H04W52/04 , H04W52/38 , H04W52/52
摘要： A system including a first power measuring module, a gain control module, and a signal processing module. The first power measuring module is configured to generate a first power measurement of a signal received by a receiver of a wireless device based on a plurality of reference signals received in the signal by the receiver of the wireless device. Each of the plurality of reference signals is transmitted at a predetermined power. The first power measurement is generated in frequency domain. The first power measurement is generated during a first frame of the signal received by the receiver of the wireless device. The gain control module is configured to adjust a gain of the receiver of the wireless device based on the first power measurement. The signal processing module is configured to process a second frame in the signal subsequent to the first frame at the adjusted gain.
摘要翻译： 一种包括第一功率测量模块，增益控制模块和信号处理模块的系统。 第一功率测量模块被配置为基于由无线设备的接收器在信号中接收的多个参考信号来生成由无线设备的接收机接收的信号的第一功率测量。 以预定的功率发送多个参考信号中的每一个。 在频域中产生第一功率测量。 在由无线设备的接收机接收的信号的第一帧期间产生第一功率测量。 增益控制模块被配置为基于第一功率测量来调整无线设备的接收机的增益。 信号处理模块被配置为处理在调整后的增益的第一帧之后的信号中的第二帧。
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4.发明授权Systems and methods for calibrating digital baseband DC offset in an OFDM receiver 有权用于在OFDM接收机中校准数字基带DC偏移的系统和方法公开(公告)号：US08781042B1
公开(公告)日：2014-07-15
申请号：US14050893
申请日：2013-10-10
发明人： Qing Zhao , Souvik Dihidar , Leilei Song , Jungwon Lee
IPC分类号： H03D1/04
CPC分类号： H04L27/2647 , H04L25/06
摘要： In accordance with the teachings described herein, systems and methods are provided for calibrating DC offset in a receiver. A DC calibration circuit may be used that is configured to receive a digital multi-carrier modulated (MCM) signal that includes a sequence of MCM symbols. The DC calibration circuit may include an accumulator and a compensator. The accumulator may be used to determine an estimated DC offset of a current MCM symbol in the sequence of MCM symbols. The compensator may be used to remove the estimated DC offset from a next MCM symbol in the sequence of MCM symbols. The accumulator may also be used to receive a plurality of digital samples that comprise the current MCM symbol and to determine the estimated DC offset by calculating an average of the plurality of digital samples.
摘要翻译： 根据本文所述的教导，提供了用于校准接收机中的DC偏移的系统和方法。 可以使用DC校准电路，其被配置为接收包括MCM符号序列的数字多载波调制（MCM）信号。 DC校准电路可以包括蓄电池和补偿器。 可以使用累加器来确定MCM符号序列中的当前MCM符号的估计DC偏移。 补偿器可以用于从MCM符号序列中的下一个MCM符号中去除估计的DC偏移。 累加器还可以用于接收包括当前MCM符号的多个数字样本，并且通过计算多个数字样本的平均值来确定估计的DC偏移。
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5.发明授权公开(公告)号：US08711990B1
公开(公告)日：2014-04-29
申请号：US13872740
申请日：2013-04-29
发明人： Jungwon Lee , Qing Zhao
IPC分类号： H04L27/06
CPC分类号： H04L27/2647 , H04L5/0007 , H04L25/0224 , H04L27/2613 , H04L27/2656 , H04L27/2657 , H04L27/2662
摘要： A system including a demodulation module, a metric generation module, and a preamble detection module. The demodulation module is configured to generate demodulated signals based on demodulating, in accordance with a differential demodulation scheme, signals received from a base station. The signals received from the base station include a plurality of symbols. The demodulated signals comprise a plurality of real parts each having a corresponding magnitude. The metric generation module is configured to generate a plurality of metrics for the plurality of symbols based on the corresponding magnitudes of the plurality of real parts of the demodulated signals. The preamble detection module is configured to detect, based on the plurality of metrics, whether the plurality of symbols in the signals received from the base station includes a preamble symbol.
摘要翻译： 一种包括解调模块，度量生成模块和前导码检测模块的系统。 解调模块被配置为基于根据差分解调方案解调从基站接收的信号来产生解调信号。 从基站接收的信号包括多个符号。 解调信号包括多个具有相应幅度的实数部分。 度量生成模块被配置为基于解调信号的多个实部的相应大小来生成多个符号的多个度量。 前导码检测模块被配置为基于多个度量来检测从基站接收的信号中的多个符号是否包括前导码符号。
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公开(公告)号：US09301269B1
公开(公告)日：2016-03-29
申请号：US14018135
申请日：2013-09-04
发明人： Qing Zhao , Chusong Xiao , Manyuan Shen , Hui-Ling Lou , Leilei Song
CPC分类号： H04W56/001 , H04J11/0073 , H04L27/2655 , H04L27/2663 , H04L27/2671 , H04L27/2675
摘要： The present disclosure describes systems and techniques relating to wireless communications. According to an aspect of the described systems and techniques, an apparatus includes: circuitry configured to receive wireless communication transmissions having periodic synchronization signals transmitted at a fixed interval, wherein the periodic synchronization signals convey information used to establish communication between wireless communication devices; and circuitry configured to acquire the periodic synchronization signals of the wireless communication transmissions by, at least in part, (i) calculating objective function values for hypotheses of parameter sets for a current period, (ii) combining only a portion of the calculated objective function values with stored objective function value data from a prior period to form combined data used in signal acquisition, and (iii) storing the combined data or the portion of the calculated objective function values for use in a next period.
摘要翻译： 本公开描述了与无线通信有关的系统和技术。 根据所描述的系统和技术的一个方面，一种装置包括：被配置为接收具有以固定间隔发送的周期性同步信号的无线通信传输的电路，其中所述周期性同步信号传送用于建立无线通信设备之间的通信的信息; 以及被配置为通过至少部分地（i）计算当前周期的参数集的假设的目标函数值来获取无线通信传输的周期性同步信号的电路，（ii）仅组合所计算的目标函数的一部分 具有来自前一周期的存储的目标函数值数据的值以形成用于信号获取的组合数据，以及（iii）存储组合数据或所计算的目标函数值的部分以用于下一周期。
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公开(公告)号：US10334614B1
公开(公告)日：2019-06-25
申请号：US15357781
申请日：2016-11-21
发明人： Jihwan P. Choi , Hui-Ling Lou , Leilei Song , Yakun Sun , Qing Zhao
摘要： Various methods and apparatus are disclosed for mitigating interference between communications between different radio access technologies in a communication device. Methods and apparatus include communicating between a first communication device and a second communication device according to a first communication protocol, and communicating between the first communication device and a third communication device according to a second communication protocol. The methods and apparatus further include determining a first time interval associated with when data is to be transmitted between the first communication device and the second communication device according to the first communications protocol. The methods and apparatus also include sending to the third communication device, an indication of a second time interval to prompt the third communication device not transmit to the first communication device during the second time interval, wherein the second time interval corresponds to the first time interval.
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公开(公告)号：US08811462B1
公开(公告)日：2014-08-19
申请号：US13942255
申请日：2013-07-15
发明人： Qing Zhao , Jungwon Lee , Leilei Song , Songping Wu , Hui-Ling Lou
CPC分类号： H04L27/2656 , H04L27/2676
摘要： A receiver device detects a plurality of symbols in a signal and determines, based on the one of the plurality of detected symbols, an estimated beginning of a subsequent frame. The receiver device determines whether the estimated start of the subsequent frame corresponds to an actual start of the subsequent frame. When the estimated start of the subsequent frame corresponds to the actual start of the subsequent frame, the receiver is synchronized to the actual start of the frame. When the estimated start of the subsequent frame does not corresponds to the actual start of the subsequent frame, the receiver device determines, based on a further one of the plurality of detected symbols, an estimated beginning of another subsequent frame. The receiver device determines whether the estimated start of the other subsequent frame corresponds to an actual start of the other subsequent frame.
摘要翻译： 接收机设备检测信号中的多个符号，并且基于多个检测符号中的一个确定后续帧的估计开始。 接收机设备确定后续帧的估计开始是否对应于后续帧的实际开始。 当后续帧的估计开始对应于后续帧的实际开始时，接收机与帧的实际开始同步。 当后续帧的估计开始不对应于后续帧的实际开始时，接收机设备基于多个检测到的符号中的另一个确定另一后续帧的估计开始。 接收机设备确定其他后续帧的估计开始是否对应于另一个后续帧的实际开始。
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公开(公告)号：US09986521B1
公开(公告)日：2018-05-29
申请号：US15267937
申请日：2016-09-16
发明人： Chusong Xiao , Qing Zhao , Manyuan Shen , Leilei Song , Hui-Ling Lou
CPC分类号： H04W56/001 , H04J11/0073 , H04J11/0076
摘要： Systems and methods are provided for detecting a received synchronization signal. The method includes receiving, at a receiver, a signal from a transmitter and the signal includes the received synchronization signal. The method includes processing the received signal and a plurality of candidate synchronization signals to obtain a plurality of correlation signals. Each candidate synchronization signal is associated with one of the plurality of correlation signals. The method includes selecting, based at least in part on the plurality of correlation signals, one of the plurality of candidate synchronization signals. The selected candidate synchronization signal is correlated with the received synchronization signal. The method includes detecting the received synchronization signal based at least in part on (i) the received signal, and (ii) a characteristic obtained from the correlation signal that is associated with the selected candidate synchronization signal.
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10.发明授权Systems and methods for detecting secondary synchronization signals in a wireless communication system 有权用于在无线通信系统中检测次同步信号的系统和方法公开(公告)号：US09065630B1
公开(公告)日：2015-06-23
申请号：US14027894
申请日：2013-09-16
发明人： Chusong Xiao , Qing Zhao , Manyuan Shen , Leilei Song , Hui-Ling Lou
CPC分类号： H04L7/042 , H04W56/0085
摘要： Systems and methods are provided for detecting a received synchronization signal. The method includes receiving, at a receiver, a signal from a transmitter, where one or more portions of the received signal include the received synchronization signal. The method includes processing the one or more portions of the received signal to obtain a differential signal, and processing the differential signal and a plurality of candidate differential synchronization signals to obtain a plurality of cross-correlation signals. Each candidate differential synchronization signal is associated with one cross-correlation signal. The method includes selecting, based at least in part on the plurality of cross-correlation signals, one of the candidate differential synchronization signals, and detecting the received synchronization signal based at least in part on (i) the one or more portions of the received signal, and (ii) a frequency offset value obtained from the cross-correlation signal associated with the selected candidate differential synchronization signal.
摘要翻译： 提供了用于检测所接收的同步信号的系统和方法。 该方法包括在接收机处接收来自发射机的信号，其中接收信号的一个或多个部分包括所接收的同步信号。 该方法包括处理接收信号的一个或多个部分以获得差分信号，以及处理差分信号和多个候选差分同步信号以获得多个互相关信号。 每个候选差分同步信号与一个互相关信号相关联。 该方法至少部分地基于多个互相关信号来选择候选差分同步信号中的一个，并且至少部分地基于（i）所接收的一个或多个部分来检测所接收的同步信号 信号，以及（ii）从与所选候选差分同步信号相关联的互相关信号获得的频率偏移值。
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