公开(公告)号：US20170048091A1

公开(公告)日：2017-02-16

申请号：US14826523

申请日：2015-08-14

申请人： Higher Ground LLC

发明人： Scott MCDERMOTT ,  David ZIERS

IPC分类号： H04L27/00 ,  H04L27/26

CPC分类号： H04B7/18513 ,  H04B7/01 ,  H04L27/0014 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675 ,  H04L2027/0087

摘要： Techniques for compensating for frequency offset of a frequency used in a translation of a signal from a first band to a second band may include using a frequency reference signal located in a different band from an information-bearing signal, where the different band may be a guard band. The frequency reference signal may be offset from a particular frequency, which may be a center frequency, of the information-bearing signal by a known amount. The frequency reference signal may be received by the transmitting station, a frequency offset may be derived, and the frequency offset may be used to pre-compensate further transmitted signals. At another station, the received frequency reference signal may be used to lock a local oscillator for demodulation and/or transmission of the information-bearing signal based on the known offset of the frequency reference signal from the frequency of the information-bearing signal.

公开(公告)号：US20170026922A1

公开(公告)日：2017-01-26

申请号：US15286600

申请日：2016-10-06

申请人： Electronics and Telecommunications Research Institute

发明人： Il Gyu KIM ,  Hyeong Geun PARK ,  Young Jo KO ,  Kapseok CHANG ,  Hyo Seok YI ,  Young Hoon KIM ,  Seung Chan BANG

IPC分类号： H04W56/00 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04W56/001 ,  H04J11/0069 ,  H04J11/0093 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675 ,  H04W36/0061 ,  H04W36/08 ,  H04W56/00

摘要： A method of searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, each cell group including at least two cells, includes: detecting a primary synchronization signal and a secondary synchronization signal from a received signal; and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.

摘要翻译： 一种搜索其中多个小区被分组成多个小区组的通信系统的移动站中的小区的方法，每个小区组包括至少两个小区，包括：检测主同步信号和辅同步信号 从接收到的信号; 以及基于所述主同步信号和所述次同步信号的组合来识别小区。 次同步信号与移动站所属的小区组相关，主同步信号与移动站所属小区相关。

公开(公告)号：US20170005848A1

公开(公告)日：2017-01-05

申请号：US15266823

申请日：2016-09-15

申请人： Huawei Technologies Co., Ltd.

发明人： Juan Zheng ,  Xiaoan Fan ,  Yongxia Lyu ,  Brian Classon

IPC分类号： H04L27/26 ,  H04W56/00

CPC分类号： H04L27/2655 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0055 ,  H04L27/261 ,  H04L27/2675 ,  H04W16/32 ,  H04W56/00 ,  H04W56/001 ,  H04W72/00

摘要： Embodiments of the present invention provide a network listening method and device, where the method includes: determining, by a first device according to a type of a network listening resource, a time-frequency pattern that is of a first sequence and is corresponding to the network listening resource of this type; and then transmitting the first sequence to a second device by using the time-frequency pattern of the first sequence, so that the second device performs network listening according to the first sequence. The time-frequency pattern of the first sequence determined in this process is a time-frequency pattern obtained by transforming a time-frequency pattern of a base sequence, and a network listening signal obtained therefrom, that is, the time-frequency pattern of the first sequence, is simple, which can achieve a purpose of reducing complexity of generating a network listening signal and computational complexity of parsing a network listening signal.

摘要翻译： 本发明的实施例提供了一种网络侦听方法和装置，其中该方法包括：根据网络监听资源的类型由第一设备确定第一序列的时间 - 频率模式，并且对应于 这种网络侦听资源; 然后通过使用第一序列的时间 - 频率模式将第一序列发送到第二设备，使得第二设备根据第一序列执行网络监听。 在该过程中确定的第一序列的时间 - 频率模式是通过对基序列的时间 - 频率模式和从其获得的网络监听信号进行变换而获得的时间 - 频率模式，即，时间 - 频率模式 第一个序列很简单，可以实现降低生成网络监听信号的复杂度和解析网络监听信号的计算复杂度的目的。

公开(公告)号：US09521025B1

公开(公告)日：2016-12-13

申请号：US14730479

申请日：2015-06-04

申请人： Marvell International Ltd.

发明人： Jin Zhang ,  Kok-Wui Cheong

IPC分类号： H04B10/00 ,  H04L27/26 ,  H04B10/27 ,  H04B10/2575

CPC分类号： H04L27/2647 ,  H04B10/60 ,  H04L5/003 ,  H04L25/4923 ,  H04L27/2613 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2697

摘要： Systems and methods for detection of a ternary sequence are provided. An example apparatus includes a receiver configured to receive an OFDM signal comprising a plurality of OFDM Resource Elements (REs). A processor is coupled to the receiver and is configured to detect a presence of a known ternary sequence in the received OFDM signal. The processor is configured to detect the ternary sequence by determining a correlation between a first set of the OFDM REs and a first set of symbols of the ternary sequence. A power of each RE of a second set of the OFDM REs is determined. A sum of the powers is determined. A detection value is based on the correlation and the sum. The ternary sequence is determined to be present in the signal based on a comparison of the detection value to a threshold.

摘要翻译： 提供了用于检测三元序列的系统和方法。 一种示例性装置包括：接收器，被配置为接收包括多个OFDM资源元素（RE）的OFDM信号。 处理器耦合到接收器，并且被配置为检测接收的OFDM信号中已知三元序列的存在。 处理器被配置为通过确定第一组OFDM RE和第三组序列的第一组符号之间的相关性来检测三进制序列。 确定第二组OFDM RE的每个RE的功率。 权力的总和是确定的。 检测值基于相关性和总和。 基于检测值与阈值的比较，确定三态序列存在于信号中。

公开(公告)号：US09510138B2

公开(公告)日：2016-11-29

申请号：US14709549

申请日：2015-05-12

申请人： Texas Instruments Incorporated

发明人： Anuj Batra ,  Timothy M. Schmidl ,  Srinath Hosur ,  June Chul Roh

IPC分类号： H04W4/00 ,  H04L27/18 ,  H04L27/20 ,  H04L29/06 ,  H04L27/26

CPC分类号： H04W4/80 ,  H04L27/18 ,  H04L27/20 ,  H04L27/2675 ,  H04L69/22 ,  H04W52/36 ,  H04W52/367 ,  H04W72/0453 ,  H04W74/0816

摘要： In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.

摘要翻译： 在至少一些实施例中，通信设备包括具有物理（PHY）层的收发器。 基于用于BAN分组传输的恒定符号速率并且基于M-ary PSK，差分M-ary PSK或旋转差分M-ary PSK调制，PHY层被配置用于在有限多径环境中的体区域网络（BAN）操作。 PHY层被配置为从选自以下的频带发送和接收数据：402-405MHz，420-450MHz，863-870MHz，902-928MHz，950-956MHz，2360-2400MHz ，和2400-2483.5MHz。

公开(公告)号：US09491024B2

公开(公告)日：2016-11-08

申请号：US14614157

申请日：2015-02-04

申请人： Hong Kong Applied Science and Technology Research Institute Co., Ltd.

发明人： Yuxian Zhang ,  Honglei Zhang ,  Victor Kwan ,  Eric Tsang

IPC分类号： H04L27/26

CPC分类号： H04L27/2663 ,  H04L27/2659 ,  H04L27/2675 ,  H04L27/2685

摘要： A method for performing high speed mode detection of a carrier frequency offset (CFO) includes receiving a Zadoff-Chu signal at a wireless device, and determining a plurality of correlation peaks based on a correlation of the signal with one or more known Zadoff-Chu sequences. The method includes determining a carrier frequency offset (CFO) associated with the signal based on a phases associated with the plurality of correlation peaks and a coarse CFO estimate. The coarse CFO estimate may be determined based on a squared power ratio of particular pairs of the plurality of correlation peaks and the phases may be used to remove ambiguity associated with the coarse CFO estimate.

摘要翻译： 用于执行载波频率偏移（CFO）的高速模式检测的方法包括在无线设备处接收Zadoff-Chu信号，并且基于所述信号与一个或多个已知的Zadoff-Chu的相关性来确定多个相关峰值 序列。 该方法包括基于与多个相关峰值相关联的相位和粗略的CFO估计来确定与该信号相关联的载波频率偏移（CFO）。 可以基于多个相关峰的特定对的平方功率比来确定粗略的CFO估计，并且可以使用相位来消除与粗略CFO估计相关联的模糊度。

公开(公告)号：US09461738B2

公开(公告)日：2016-10-04

申请号：US14267965

申请日：2014-05-02

申请人： Futurewei Technologies, Inc.

发明人： Syed Rahman ,  Dao Pan ,  Fanglin Sun

IPC分类号： H04B10/079 ,  H04B10/2575 ,  H04L5/00 ,  H04L27/26 ,  H04Q11/00

CPC分类号： H04B10/07955 ,  H04B10/25753 ,  H04B10/27 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2647 ,  H04L27/2656 ,  H04L27/2675 ,  H04Q11/0067

摘要： An apparatus comprising a receiver configured to couple to an Ethernet Passive Optical network over Coaxial (EPoC) network, and receive an upstream Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of OFDM Resource Elements (REs), and a processor coupled to the receiver and configured to determine a presence of a burst marker sequence in the received signal, wherein the burst marker sequence comprises interlaced pilot symbols and null symbols, and wherein determining the presence of the burst marker sequence comprises computing a power ratio between a first set of the OFDM REs and a second set of the OFDM REs, and determining that the burst marker sequence is found when the computed power ratio exceeds a pre-determined threshold.

摘要翻译： 一种装置，包括被配置为通过同轴（EPoC）网络耦合到以太网无源光网络并且接收包括多个OFDM资源元素（RE）的上行正交频分复用（OFDM）信号的接收机，以及耦合到 接收器并且被配置为确定接收信号中突发标记序列的存在，其中突发标记序列包括隔行导频符号和空符号，并且其中确定突发标记序列的存在包括计算第一组 OFDM RE和第二组OFDM RE，并且当所计算的功率比超过预定阈值时，确定突发标记序列被找到。

公开(公告)号：US20160285509A1

公开(公告)日：2016-09-29

申请号：US14984966

申请日：2015-12-30

申请人： STMICROELECTRONICS (ROUSSET) SAS

发明人： Mark WALLIS ,  Yoann BOUVET ,  Pierre DEMAJ

IPC分类号： H04B3/54 ,  H04L27/26 ,  H04L5/00

CPC分类号： H04B3/54 ,  H04L5/0007 ,  H04L25/03993 ,  H04L25/067 ,  H04L27/2607 ,  H04L27/2656 ,  H04L27/2675 ,  H04L27/2691

摘要： A method is for processing an analog signal coming from a transmission channel. The analog signal may include a useful signal modulated on a sub-set of carriers. The method may include analog-to-digital converting of the analog signal into a digital signal, and synchronization processing the digital signal. The synchronizing may include determining, in a time domain, a limited number of coefficients of a predictive filter from an autoregressive model of the digital signal, and filtering the digital signal in the time domain by a digital finite impulse response filter with coefficients based upon the limited number of coefficients to provide a filtered digital signal. The method may include detecting of an indication allowing a location in the frame structure to be identified, using the filtered digital signal and a reference signal.

摘要翻译： 一种用于处理来自传输信道的模拟信号的方法。 模拟信号可以包括调制在载波子集上的有用信号。 该方法可以包括将模拟信号模数转换为数字信号，并对数字信号进行同步处理。 同步可以包括在时域中从数字信号的自回归模型中确定预测滤波器的有限数量的系数，并且通过数字有限脉冲响应滤波器在时域中对数字信号进行滤波，其中系数基于 有限数量的系数提供一个滤波后的数字信号。 该方法可以包括使用滤波的数字信号和参考信号来检测允许帧结构中的位置被识别的指示。

公开(公告)号：US09455862B2

公开(公告)日：2016-09-27

申请号：US14391969

申请日：2013-03-27

申请人： Orange

发明人： Julie Karaki ,  Erwan Pincemin

IPC分类号： H04B10/06 ,  H04L27/26 ,  H04B10/61

CPC分类号： H04L27/2657 ,  H04B10/614 ,  H04B10/6164 ,  H04B2210/075 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675 ,  H04L27/2697

摘要： A method is provided for receiving an optical signal including a step of coherently detecting the optical signal, outputting a multicarrier signal received, and a step of processing the received multicarrier signal, which includes a step of estimating a frequency offset affecting the received multicarrier signal relative to a corresponding multicarrier transmitter signal. The estimation step implements two sub-steps including: a sub-step of determining the entire portion of the frequency offset; and a sub-step of determining the fractional portion of the frequency offset. The sub-step of determining the entire portion implements a measurement, in the spectral range, of an offset between the position of at least one specific carrier of the multicarrier transmitter signal and the position of the corresponding specific carrier or carriers in the received multicarrier signal.

摘要翻译： 提供了一种用于接收光信号的方法，该光信号包括相干检测光信号，输出接收的多载波信号和处理接收的多载波信号的步骤，该步骤包括估计影响所接收的多载波信号相对频率偏移的步骤 到相应的多载波发射机信号。 估计步骤实现两个子步骤，包括：确定频率偏移的整个部分的子步骤; 以及确定频率偏移的小数部分的子步骤。 确定整个部分的子步骤在光谱范围内实现多载波发射机信号的至少一个特定载波的位置与接收的多载波信号中对应的特定载波或载波的位置之间的偏移量的测量 。

公开(公告)号：US20160269138A1

公开(公告)日：2016-09-15

申请号：US15163055

申请日：2016-05-24

申请人： Regents of the University of Minnesota

发明人： Georgios B. Giannakis ,  Xiaoli Ma

IPC分类号： H04J11/00 ,  H04L5/00 ,  H04L27/26

CPC分类号： H04J11/0063 ,  H04B7/0413 ,  H04B7/046 ,  H04B7/063 ,  H04B7/066 ,  H04L5/0016 ,  H04L25/0202 ,  H04L25/0206 ,  H04L25/0228 ,  H04L25/0242 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2657 ,  H04L27/2671 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2692 ,  H04L27/2695

摘要： Techniques are described for carrier frequency offset (CFO) and channel estimation of orthogonal frequency division multiplexing (OFDM) transmissions over multiple-input multiple-output (MIMO) frequency-selective fading channels. A wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols. The transmitter applies a hopping code to each of the blocks of symbols to insert a null subcarrier at a different position within each of the blocks of symbols, and a modulator outputs a wireless signal in accordance with the blocks of symbols. A receiver receives the wireless signal and estimates the CFO, and outputs a stream of estimated symbols based on the estimated CFO.