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1. 发明专利

CA2041279A1 QUADRATURE BIORTHOGONAL MODULATION 未知
公开(公告)号：CA2041279A1
公开(公告)日：1992-10-26
申请号：CA2041279
申请日：1991-04-25
申请人： FLEISHER SOLOMON M , QU SHOUXING
发明人： FLEISHER SOLOMON M , QU SHOUXING
IPC分类号： H03C3/02 , H03D3/00
摘要： Quadrature Biorthogonal Modulation Digital modulation/demodulation methods utilize multiplexing in quadrature of two N-dimensional biorthogonal signal sets wherein the said signal sets are transmitted on each of the two quadrature carriers cos.omega.ct and sin.omega.ct in order to increase the bandwidth efficiency and/or the power efficiency as compared to known digital transmission methods. One embodiment of the invention utilizes two sets of combined frequency/phase modulated (FPM) signals of the type NFSK/2PSK with adjacent frequencies separation of 1/T Hz as the constituent biorthogonal signal sets, and is referred to as Quadrature Frequency/Phase Modulation (QFPM). A preferred embodiment of the invention referred to as Continuous Phase Quadrature Frequency/Phase Modulation (CP QFPM) is essentially a modified QFPM scheme with sinusoidal shaping and an offset of T/2 in the relative alignment of the baseband modulating waveforms for the two quadrature components of the QFPM signal set. Another preferred embodiment of the invention, referred to as Continuous Phase Frequency/Phase Modulation (CP FPM), is a particular case of CP QFPM wherein the same frequencies are used in both quadrature components of CP QFPM which yields a constant-envelope signal set.

2. 发明申请

WO2019199744A1 METHOD AND SYSTEM FOR MOVING STATUS DETECTION FOR A SENSOR APPARATUS 审中-公开
公开(公告)号：WO2019199744A1
公开(公告)日：2019-10-17
申请号：PCT/US2019/026479
申请日：2019-04-09
申请人： BLACKBERRY LIMITED , CAI, Zhijun , QU, Shouxing , GAO, Yu , MARTIN-COCHER, Gaëlle Christine , BENNETT, Jesse William
发明人： CAI, Zhijun , QU, Shouxing , GAO, Yu , MARTIN-COCHER, Gaëlle Christine , BENNETT, Jesse William
IPC分类号： H04Q9/00 , G06Q10/08 , H04M1/725
摘要： A method at a sensor apparatus, the method including calculating a value for a target function based on at least one sensor of the sensor apparatus; determining that the value of the target function is within a defined threshold range for a defined time period, thereby finding an in-flight state for the sensor apparatus; and turning off transmission from a radio of the sensor apparatus based on the in-flight state.

3. 发明申请

WO2013019244A1 METHOD AND SYSTEM FOR FORMATTING CYCLIC PREFIX/POSTFIX IN A MOBILE COMMUNICATION SYSTEM 审中-公开
标题翻译：用于在移动通信系统中形成循环前缀/后缀的方法和系统
公开(公告)号：WO2013019244A1
公开(公告)日：2013-02-07
申请号：PCT/US2011/046638
申请日：2011-08-04
申请人： RESEARCH IN MOTION LIMITED , WU, Huan , JIA, Yongkang , XIN, Yan , QU, Shouxing , VUTUKURI, Eswar, Kalyan , BUCKLEY, Michael, Eoin
发明人： WU, Huan , JIA, Yongkang , XIN, Yan , QU, Shouxing , VUTUKURI, Eswar, Kalyan , BUCKLEY, Michael, Eoin
IPC分类号： H04L27/26
CPC分类号： H04L27/2602 , H04L27/2607
摘要： A method and transmitter, the method generating a burst containing a first data portion and a second data portion surrounding a training sequence; and appending to the burst a cyclic prefix and a cyclic postfix. Further a receiver on a network element, the receiver configured to: receive a burst containing a cyclic prefix, a cyclic postfix and a data portion; remove at least one of the cyclic prefix or the cyclic postfix; transform the data portion with a discrete Fourier transform; estimate the channel frequency response and modulation of the burst; undo an effect of a channel on the data portion by using the estimated channel frequency response of the channel on the transformed data; use an inverse discrete Fourier transform on the result of the equalizing step; and further process the output of the equalization step to decode the transmitted bits.
摘要翻译：一种方法和发射机，所述方法产生包含第一数据部分和围绕训练序列的第二数据部分的脉冲串; 并附加到脉冲串循环前缀和循环后缀。此外，网络元件上的接收器，所述接收器被配置为：接收包含循环前缀，循环后缀和数据部分的突发; 删除循环前缀或循环后缀中的至少一个; 用离散傅立叶变换来变换数据部分; 估计信道频率响应和突发调制; 通过使用所述信道对所述经变换的数据的所估计的信道频率响应来消除所述数据部分上的信道的影响; 对均衡步骤的结果使用逆离散傅里叶变换; 并且进一步处理均衡步骤的输出以对发送的比特进行解码。

4. 发明申请

WO2012115618A1 METHOD AND SYSTEM FOR MULTIPLE TRAINING SEQUENCES FOR PEAK-TO-AVERAGE POWER RATIO REDUCTION IN PRECODED BURSTS 审中-公开
标题翻译：用于多个训练序列的方法和系统，用于预先布置的脉冲中的平均功率比减少
公开(公告)号：WO2012115618A1
公开(公告)日：2012-08-30
申请号：PCT/US2011/025614
申请日：2011-02-21
申请人： RESEARCH IN MOTION LIMITED , XIN, Yan , QU, Shouxing Simon , WU, Huan , BUCKLEY, Michael Eoin , VUTUKURI, Eswar
发明人： XIN, Yan , QU, Shouxing Simon , WU, Huan , BUCKLEY, Michael Eoin , VUTUKURI, Eswar
IPC分类号： H04L27/26
CPC分类号： H04L27/262 , H04L1/007 , H04L1/0072 , H04L25/0224 , H04L25/03343 , H04L27/18 , H04L27/2666 , H04L27/34
摘要： A method and apparatus for peak to average power ratio reduction, the method precoding the data symbols using an inverse discrete Fourier transform ('IDFT'), choosing, at a transmitter, a set of training sequence symbols from a plurality of sets of training sequence symbols, and creating, at the transmitter, an IDFT precoded burst by adding the IDFT of the data symbols and an IDFT of the chosen set of training sequence symbols. Further, a method and receiver, the method receiving a burst, performing a discrete Fourier transform on the burst, choosing a training sequence among a known plurality of training sequences sets, the chosen training sequence resulting in the least noise estimate among the plurality of training sequence sets, and demodulating the burst with the detected pilot burst.
摘要翻译：一种用于峰均功率比降低的方法和装置，所述方法使用逆离散傅立叶变换（“IDFT”）对数据符号进行预编码，在发射机处从多组训练序列中选择一组训练序列符号符号，并且通过添加数据符号的IDFT和所选择的训练序列符号组的IDFT，在发射机处创建IDFT预编码突发。此外，方法和接收机，接收脉冲串的方法，在脉冲串上执行离散付里叶变换，选择已知多个训练序列集之间的训练序列，所选择的训练序列导致多个训练中的最小噪声估计序列集，并用检测到的导频突发解调突发。

5. 发明申请

WO2010020040A1 SYSTEMS AND METHODS FOR TRAINING SEQUENCE SELECTION, TRANSMISSION AND RECEPTION 审中-公开
标题翻译：用于训练序列选择，传输和接收的系统和方法
公开(公告)号：WO2010020040A1
公开(公告)日：2010-02-25
申请号：PCT/CA2009/001149
申请日：2009-08-18
申请人： RESEARCH IN MOTION LIMITED , XIN, Yan , WU, Huan , QU, Shouxing
发明人： XIN, Yan , WU, Huan , QU, Shouxing
IPC分类号： H04B7/212 , H04B7/005 , H04W88/02 , H04W88/08
CPC分类号： H04L25/0226 , H04L25/0248 , H04L27/2089
摘要： Methods of training sequence selection are provided that involve optimization in terms of SNR degradation. Various sets of training sequences produced using the methods, and transmitters and receivers encoded with such sequences are provided.
摘要翻译：提供了训练序列选择的方法，其涉及SNR退化方面的优化。提供了使用这些方法产生的各种训练序列组，以及用这种序列编码的发射机和接收机。

6. 发明申请

WO2010017638A1 COMMUNICATING USING ASK OR QAM WITH UNEVEN SYMBOL CONSTELLATION 审中-公开
标题翻译：使用询问或QAM与无法符号符号进行通信
公开(公告)号：WO2010017638A1
公开(公告)日：2010-02-18
申请号：PCT/CA2009/001133
申请日：2009-08-13
申请人： RESEARCH IN MOTION LIMITED , QU, Shouxing , XIN, Yan , DWYER, Johanna Lisa
发明人： QU, Shouxing , XIN, Yan , DWYER, Johanna Lisa
IPC分类号： H04L27/04 , H04L27/06
CPC分类号： H04L27/3488 , H04L1/0003 , H04L1/0025 , H04L5/04
摘要： Systems and methods of performing ASK or QAM modulation with uneven distance between symbols are provided. Different bit positions mapped to such symbols are assigned to different receivers, with the result that there are different BER performances among bits sent from a transmitter to the different receivers.
摘要翻译：提供了在符号之间具有不均匀距离执行ASK或QAM调制的系统和方法。映射到这样的符号的不同位位置被分配给不同的接收机，结果是从发射机发送到不同接收机的比特之间存在不同的BER性能。

7. 发明申请

WO2008092277A1 APPARATUS, AND ASSOCIATED METHOD, FOR COMMUNICATING A DATA BLOCK IN A MULTI CARRIER MODULATION COMMUNICATION SCHEME TOGETHER WITH AN IDENTIFICATION SEQUENCE SUPERIMPOSED THEREON 审中-公开
标题翻译：装置和相关方法，用于在多载波调制通信方案中通信数据块，并具有超过其标识的序列
公开(公告)号：WO2008092277A1
公开(公告)日：2008-08-07
申请号：PCT/CA2008/000222
申请日：2008-02-04
申请人： RESEARCH IN MOTION LIMITED , QU, Shouxing
发明人： QU, Shouxing
IPC分类号： H04L27/26 , H04J11/00
CPC分类号： H04L27/2615 , H04L27/2626
摘要： Apparatus, and an associated method, for facilitating communication of a data block communicated in an OFDM-based communication system. Side-information required to be transmitted by many PAPR reduction schemes in OFDM is carried and transmitted by sending orthogonal binary sequences superimposed on the OFDM data sequence carrying the information to be transmitted. In one embodiment, a selected scrambling sequence is multiplied with an input data block to yield a desired Peak-To-Average Power Ratio. An identification sequence one-to-one corresponding to the scrambling sequence is superimposed on the resultant sequence and transmitted together. In the receiving station, the identification sequence is determined through correlation operations. This also determines the scrambling sequence. The effects of both sequences are finally removed from the information-carrying data sequence.
摘要翻译：装置和相关方法，用于促进在基于OFDM的通信系统中传送的数据块的通信。通过发送正交二进制序列来携带和发送通过OFDM中的许多PAPR减少方案发送的侧信息，该正交二进制序列叠加在承载要发送的信息的OFDM数据序列上。在一个实施例中，将所选择的加扰序列与输入数据块相乘以产生期望的峰均功率比。与加扰序列对应的一对一识别序列叠加在合成序列上并一起发送。在接收站中，通过相关操作确定识别序列。这也决定了加扰序列。最终从信息携带数据序列中消除了两个序列的影响。

8. 发明申请

WO2018082848A1 COMMUNICATION WITH I-Q DECOUPLED OFDM MODULATION 审中-公开
标题翻译：与I-Q解耦OFDM调制的通信
公开(公告)号：WO2018082848A1
公开(公告)日：2018-05-11
申请号：PCT/EP2017/074797
申请日：2017-09-29
申请人： BLACKBERRY LIMITED , QU, Shouxing , HE, Dake , MCCANN, Stephen
发明人： QU, Shouxing , HE, Dake , MCCANN, Stephen
IPC分类号： H04L27/26
摘要： In some examples, an apparatus includes a transmitter configured to apply input data as a frequency-domain data sequence to modulate a set of subcarriers, and separate the frequency-domain data sequence into a first subsequence of elements and a second subsequence of elements. A first conjugate symmetric subsequence that is based on inserting a zero value into the first subsequence is formed, and a second conjugate symmetric subsequence that is based on inserting a zero value into the second subsequence is formed, where the zero values are inserted at different positions in the first and second subsequences. A time-domain sequence comprising a first component that is a function of the first conjugate symmetric subsequence, and a second component that is a function of the second conjugate symmetric subsequence is generated.
摘要翻译：在一些示例中，一种装置包括发射机，该发射机被配置为将输入数据作为频域数据序列来应用以调制一组副载波，并且将该频域数据序列分离为元素的第一子序列和元素的第二个子序列。形成基于将零值插入到第一子序列中的第一共轭对称子序列，并且形成基于将零值插入到第二子序列中的第二共轭对称子序列，其中零值插入到不同位置在第一和第二子序列中。生成包括作为第一共轭对称子序列的函数的第一分量和作为第二共轭对称子序列的函数的第二分量的时域序列。

9. 发明申请

WO2010017637A1 COMMUNICATING USING ASK OR QAM WITH UNEVEN SYMBOL CONSTELLATION 审中-公开
标题翻译：使用询问或QAM与无法符号符号进行通信
公开(公告)号：WO2010017637A1
公开(公告)日：2010-02-18
申请号：PCT/CA2009/001132
申请日：2009-08-13
申请人： RESEARCH IN MOTION LIMITED , QU, Shouxing , XIN, Yan , DWYER, Johanna Lisa , CARPENTER, Paul
发明人： QU, Shouxing , XIN, Yan , DWYER, Johanna Lisa , CARPENTER, Paul
IPC分类号： H04L27/04 , H04L27/06
CPC分类号： H04L27/3488 , H04L1/0003 , H04L1/0025 , H04L5/04
摘要： Systems and methods of performing ASK or QAM modulation with uneven distance between symbols are provided. These are used to provide differing BER performances among bits sent from a transmitter to a receiver.
摘要翻译：提供了在符号之间具有不均匀距离执行ASK或QAM调制的系统和方法。这些用于在从发射机发送到接收机的比特之间提供不同的BER性能。

10. 发明申请

WO2008141461A1 APPARATUS, AND ASSOCIATED METHOD, FOR DETECTING VALUES OF A SPACE-TIME BLOCK CODE USING SELECTIVE DECISION-FEEDBACK DETECTION 审中-公开
标题翻译：装置和相关方法，用于使用选择性决策反馈检测来检测空时块代码的值
公开(公告)号：WO2008141461A1
公开(公告)日：2008-11-27
申请号：PCT/CA2008/000988
申请日：2008-05-16
申请人： RESEARCH IN MOTION LIMITED , QU, Shouxing
发明人： QU, Shouxing
IPC分类号： H04L1/00 , H04B7/00
CPC分类号： H04L25/03057 , H04L1/0631 , H04L1/0668 , H04L25/0246 , H04L25/067
摘要： A selective decision-feedback detector for the space-time block code which provides both diversity and spatial multiplexing. To detect a received code block of transmitted symbols, the channel matrix is properly preprocessed with the real and imaginary parts decoupled, and the selective decision-feedback detector makes multiple decisions on the same block upon differently permuted channel matrix and generates multiple candidates for the results. The indicators of the decision errors associated with the candidates are compared, and one of the candidates with the minimum error is selected by a selector as the decided symbols to be used for further processing at a receiving station.
摘要翻译：一种提供分集和空间复用的时空块码的选择性判决反馈检测器。为了检测已发送码元的接收码块，对信道矩阵进行适当的预处理，实部和虚部解耦，选择性判决反馈检测器在不同置换的信道矩阵上对同一块进行多个决策，并为结果生成多个候选。比较与候选者相关联的判定错误的指示符，并且选择器选择具有最小误差的候选中的一个作为用于在接收站进一步处理的确定符号。

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