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31. 发明申请

US20070253496A1 WIRELESS COMMUNICATION SYSTEM HAVING LINEAR ENCODER 有权
标题翻译：具有线性编码器的无线通信系统
公开(公告)号：US20070253496A1
公开(公告)日：2007-11-01
申请号：US10420353
申请日：2003-04-21
申请人： Georgios Giannakis , Yan Xin , Zhengdao Wang
发明人： Georgios Giannakis , Yan Xin , Zhengdao Wang
IPC分类号： H04K1/10
CPC分类号： H04L27/2602 , H04L1/0041 , H04L1/04 , H04L5/0007 , H04L5/0044 , H04L2025/03414 , H04L2025/0349
摘要： In general, linear complex-field encoding techniques are proposed For example, transmitter of a wireless communication system includes an encoder and a modulator. The encoder linearly encodes a data stream to produce an encoded data stream. The modulator to produce an output waveform in accordance with the encoded data stream for transmission through a wireless channel. The modulator generates the output waveform as a multicarrier waveform having a set of subcarriers, e.g., an Orthogonal Frequency Division Multiplexing (OFDM) waveform. The encoder linearly encodes the data stream so that the subcarriers carry different linear combinations of information symbols of the data stream.
摘要翻译：通常，提出了线性复合场编码技术。例如，无线通信系统的发射机包括编码器和调制器。编码器对数据流进行线性编码以产生编码数据流。该调制器根据用于通过无线信道传输的编码数据流产生输出波形。调制器产生输出波形作为具有一组副载波的多载波波形，例如正交频分复用（OFDM）波形。编码器对数据流进行线性编码，使得子载波携带数据流的信息符号的不同线性组合。

32. 发明授权

US10555170B2 Method and apparatus for authentication of wireless devices 有权
公开(公告)号：US10555170B2
公开(公告)日：2020-02-04
申请号：US15056078
申请日：2016-02-29
申请人： Sheng Sun , Yan Xin
发明人： Sheng Sun , Yan Xin
IPC分类号： H04W12/06 , H04L29/06 , H04W12/04
摘要： A method and apparatus for authenticating a directional multi gigabit device for communication in an IEEE 802.11-compliant wireless network are provided. Network association and authentication can be performed in parallel, with association and authentication information elements included in common frames. Authentication information elements are included in at least one and potentially a sequence of management frames transmitted between an access point of the wireless network and the device. The authentication information elements are thereby exchanged between the access point and the device. The exchanged authentication information elements are used to establish that both the access point and the device possess a common cryptographic key. The exchanged management frames can also facilitate network association. Authentication information elements can also be included in non-management frames. A format for the authentication information elements is presented.

33. 发明授权

US10298335B1 Co-channel interference reduction in mmWave networks 有权
公开(公告)号：US10298335B1
公开(公告)日：2019-05-21
申请号：US16148374
申请日：2018-10-01
申请人： Yan Xin , Sheng Sun , Huan Wu
发明人： Yan Xin , Sheng Sun , Huan Wu
IPC分类号： H04B15/00 , H04L25/02 , H04W40/16 , H04B17/345
摘要： Methods and devices for receiving or transmitting a wireless packet are described. A wireless packet includes a short training field (STF) and a channel estimation field (CEF). The receiver determines whether the received STF matches an assigned STF assigned for a target link, by performing cross-correlation between the STF and a component sequence from a set of at least four different component sequences which are pairs of Golay sequences. The cross-correlation output is compared with an expected output. When the received STF matches the assigned STF, the wireless packet is considered a target packet. A channel estimation is performed using a cross-correlation of the received CEF with an assigned CEF assigned for the target link. The assigned CEF is from a set of two or more CEFs, where each CEF is formed using the set of component sequences, and the CEFs are pairwise zero-correlation zone (ZCZ) sequences.

34. 发明授权

US08724724B2 Zero correlation zone sequences for communication system 有权
标题翻译：通信系统的零相关区序列
公开(公告)号：US08724724B2
公开(公告)日：2014-05-13
申请号：US13537429
申请日：2012-06-29
申请人： Yan Xin , Yongkang Jia , Huan Wu , Shouxing Qu , Arnold Sheynman
发明人： Yan Xin , Yongkang Jia , Huan Wu , Shouxing Qu , Arnold Sheynman
IPC分类号： H04W72/04 , H04W56/00
CPC分类号： H04J13/14 , H04J13/0014 , H04J13/0055 , H04J13/107
摘要： The present disclosure provides for the construction and use of a set of Zero-Correlation-Zone (ZCZ) Concatenated Complementary Pair (CCP) sequences with zero-correlation-zone range greater than one or with zero-correlation-zone range equal to one and the sequence set size greater than two. Complementary pair sequences A and B are selected and, for each member of the set of ZCZ CCP sequences, sign sequences pA and pB are combined with the complementary pair sequences to form a member ZCZ CCP sequence of the set. A ZCZ CCP sequence modified by propagation over a communication channel may be identified by cross-correlation with ZCZ CCP sequences of the set. A set of sign sequences may be constructed by recursive expansion from an initial set or found by a computer search. The sequences may be used in a transceiver of a portable electronic device or other communication device.
摘要翻译：本公开提供了一组零相关区（ZCZ）并置互补对（CCP）序列的构造和使用，零相关区域范围大于1或零相关区域范围等于1，序列集大小大于2。选择互补对序列A和B，并且对于ZCZ CCP序列集合中的每个成员，符号序列pA和pB与互补对序列组合以形成该组的成员ZCZ CCP序列。可以通过在通信信道上的传播修改的ZCZ CCP序列可以通过与该集合的ZCZ CCP序列的互相关来识别。可以通过从初始集合的递归展开或通过计算机搜索找到的一组符号序列。这些序列可以用在便携式电子设备或其他通信设备的收发器中。

35. 发明授权

US08717922B2 Multitaper spectrum sensing systems and methods 有权
标题翻译：多频谱传感系统和方法
公开(公告)号：US08717922B2
公开(公告)日：2014-05-06
申请号：US13284442
申请日：2011-10-28
申请人： Yan Xin , Kyungtae Kim , Sampath Rangarajan
发明人： Yan Xin , Kyungtae Kim , Sampath Rangarajan
IPC分类号： H04L12/26
CPC分类号： H04W16/14 , H04L27/0006
摘要： Spectrum sensing methods and systems for detecting spectrum holes for use in cognitive radio secondary transmissions are disclosed. In one method, an indication of an assignment of a set of subcarriers to a primary user is received. The method further includes determining multitaper spectral estimates for at least a subset of the set of subcarriers based on the assignment of the set of subcarriers to the primary user by processing samples for the at least a subset of the set of subcarriers. In addition, a test statistic that is based on the multitaper spectral estimates is compared to a threshold to determine whether the set of subcarriers is utilized for primary transmissions to the primary user. Moreover, data signals are received on at least one of the subcarriers in the set of subcarriers if the set of subcarriers is not utilized for primary transmissions to the primary user.
摘要翻译：公开了用于在认知无线电二次传输中使用的用于检测频谱孔的频谱感测方法和系统。在一种方法中，接收向主用户分配一组子载波的指示。该方法还包括：通过处理子载波组的至少一个子集的样本，基于通过向主用户的子载波集合的分配来确定子载波组的至少子集的多频谱估计。此外，将基于多频谱估计的测试统计量与阈值进行比较，以确定该副载波集合是否用于主用户的主要传输。此外，如果子载波的集合不用于主要用户的主要传输，则在子载波组中的至少一个子载波上接收数据信号。

36. 发明授权

US08699712B2 Randomization of plain text for GSM SACCH 有权
标题翻译： GSM SACCH的纯文本随机化
公开(公告)号：US08699712B2
公开(公告)日：2014-04-15
申请号：US13225116
申请日：2011-09-02
申请人： Yan Xin , Huan Wu , Raveendra Seetharam
发明人： Yan Xin , Huan Wu , Raveendra Seetharam
IPC分类号： H04W12/00 , H04L12/66 , H04J3/12 , H04B17/00 , H04B7/26
CPC分类号： H04W12/02 , H04L9/002 , H04L9/0668 , H04L2209/08 , H04L2209/80
摘要： The present document relates to the transmission of data in a digital cellular telecommunications network. In particular, the present document relates to the secure transmission of data over Global System for Mobile Communications (GSM) networks. A method for encoding a SACCH information block in a wireless network is described. The method comprises randomizing a plurality of randomization unit input bits derived from at least some of a plurality of payload bits of the SACCH information block using a pseudo-random bit block, thereby yielding a plurality of randomized bits; and ciphering a plurality of ciphering unit input bits derived from at least some of the plurality of randomized bits, thereby yielding an encoded data burst of a SACCH frame; wherein ciphering is based on a ciphering algorithm using a ciphering key Kc and a frame number COUNT of the SACCH frame; wherein the pseudo-random bit block is determined based on the ciphering key Kc.
摘要翻译：本文件涉及数字蜂窝电信网络中的数据传输。特别地，本文件涉及通过全球移动通信系统（GSM）网络的数据的安全传输。描述了一种在无线网络中对SACCH信息块进行编码的方法。该方法包括使用伪随机比特块随机化从SACCH信息块的多个有效负载比特中的至少一些导出的多个随机化单元输入比特，从而产生多个随机比特; 以及加密从所述多个随机化位中的至少一些导出的多个加密单元输入位，从而产生SACCH帧的编码数据突发; 其中加密基于使用加密密钥Kc和SACCH帧的帧号COUNT的加密算法; 其中，基于加密密钥Kc来确定伪随机比特块。

37. 发明授权

US08681731B2 Orthogonal frequency-division multiplexing (OFDM) communication slot structures and methods 有权
标题翻译：正交频分复用（OFDM）通信时隙结构和方法
公开(公告)号：US08681731B2
公开(公告)日：2014-03-25
申请号：US12781771
申请日：2010-05-17
申请人： Werner Kreuzer , Michael Eoin Buckley , Yan Xin , Shouxing Qu , Sean Bartholomew Simmons
发明人： Werner Kreuzer , Michael Eoin Buckley , Yan Xin , Shouxing Qu , Sean Bartholomew Simmons
IPC分类号： H04W4/00
CPC分类号： H04L5/0042 , H04L5/0051 , H04L27/0008
摘要： Improved orthogonal frequency-division multiplexing (OFDM) communication slot structures and method are described. One example method includes converting a first portion of a set of bits to a first orthogonal frequency-division multiplexing symbol to be transmitted during a first portion of a time-division multiple access time slot, and converting a second portion of the set of bits to a second orthogonal frequency-division multiplexing symbol to be transmitted during a second portion of the time-division multiple access time slot. Other embodiments are shown and described.
摘要翻译：描述了改进的正交频分复用（OFDM）通信时隙结构和方法。一个示例性方法包括将一组比特的第一部分转换为在时分多址接入时隙的第一部分期间要发送的第一正交频分复用符号，并将该组比特的第二部分转换为在时分多址存取时隙的第二部分期间发送的第二正交频分复用符号。示出和描述其他实施例。

38. 发明申请

US20140036934A1 METHOD AND SYSTEM FOR BURST FORMATTING OF PRECODED EGPRS2 SUPPORTING LEGACY USER MULTIPLEXING 审中-公开
标题翻译：用于预测EGPRS2支持的用户多路复用的冲突格式的方法和系统
公开(公告)号：US20140036934A1
公开(公告)日：2014-02-06
申请号：US14000845
申请日：2011-02-21
申请人： Michael Eoin Buckley , Yan Xin , Shouxing Qu , Eswar Vutukuri
发明人： Michael Eoin Buckley , Yan Xin , Shouxing Qu , Eswar Vutukuri
IPC分类号： H04L27/26
CPC分类号： H04L27/2628 , H04L1/007 , H04L1/0072 , H04L25/0224 , H04L25/03159 , H04L25/03343 , H04L27/0008 , H04L27/18 , H04L27/2602 , H04L27/2626 , H04L27/34 , H04L2025/03414
摘要： A method and system for burst formatting of precoded EPGRS2 supporting legacy user multiplexing, the method generating, at a transmitter, a burst containing a plurality of inverse discrete Fourier transform (‘IDFT’) precoded symbols and plurality of non-IDFT precoded mid-amble symbols, wherein the IDFT precoded symbols are addressed for a first mobile device, and the non-IDFT precoded mid-amble symbols contain data addressed to a second mobile device.
摘要翻译：一种用于突发格式化支持传统用户复用的预编码EPGRS2的方法和系统，该方法在发射机处产生包含多个离散傅里叶逆变换（“IDFT”）预编码符号和多个非IDFT预编码中置码的突发符号，其中所述IDFT预编码符号被寻址用于第一移动设备，并且所述非IDFT预编码的中置码符号包含寻址到第二移动设备的数据。

39. 发明授权

US08059750B2 Method and apparatus for generating training sequence code in a communication system 有权
标题翻译：用于在通信系统中生成训练序列码的方法和装置
公开(公告)号：US08059750B2
公开(公告)日：2011-11-15
申请号：US12028493
申请日：2008-02-08
申请人： Yan Xin , Jong-Soo Choi
发明人： Yan Xin , Jong-Soo Choi
IPC分类号： H04L27/36
CPC分类号： H04L25/0226 , H04J13/00 , H04J13/10 , H04L27/3455
摘要： A method and apparatus for generating a TSC in a communication system are provided, in which a pair of sequences A and B having auto-correlation and cross-correlation properties are generated and the TSC is generated by inserting guard sequences Z each having z zero symbols in the most significant bits of the sequences A and B.
摘要翻译：提供了一种用于在通信系统中生成TSC的方法和装置，其中生成具有自相关和互相关特性的一对序列A和B，并且通过插入具有z个零符号的保护序列Z来产生TSC 在序列A和B的最高有效位中。

40. 发明申请

US20110223911A1 EFFICIENT CHANNEL SEARCH WITH ENERGY DETECTION 有权
标题翻译：有效的通道搜索与能量检测
公开(公告)号：US20110223911A1
公开(公告)日：2011-09-15
申请号：US13029726
申请日：2011-02-17
申请人： Yan Xin , Guosen Yue
发明人： Yan Xin , Guosen Yue
IPC分类号： H04W4/00
CPC分类号： H04W72/02 , H04W24/00 , H04W28/18 , Y02D70/00
摘要： Methods and systems for cognitive radio channel searching are shown that include determining an energy detection threshold and a number of samples that will find a free channel in a minimum searching time, based on a number of channels K and a channel occupancy probability π0, constrained by a target acceptable misdetection probability and a target acceptable false alarm probability. The search includes an energy detection threshold and a number of samples that will find a free channel in a minimum average searching time. The K channels are searched with a signaling device using the determined energy detection threshold and the determined number of samples to find a free channel.
摘要翻译：示出了用于认知无线电信道搜索的方法和系统，其包括基于信道数量K和信道占用概率＆pgr; 0确定在最小搜索时间内将找到空闲信道的能量检测阈值和数量的样本，受目标可接受的错误检测概率和目标可接受的误报概率的约束。搜索包括能量检测阈值和将在最小平均搜索时间内找到空闲频道的样本数。使用确定的能量检测阈值和所确定的样本数量来搜索K个信道，使用信令装置来搜索自由信道。

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