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11. 发明授权

US08995533B2 Method and apparatus for transmitting and receiving FEC frame headers with variable header modulation 有权
标题翻译：用于发送和接收具有可变报头调制的FEC帧报头的方法和装置
公开(公告)号：US08995533B2
公开(公告)日：2015-03-31
申请号：US12998780
申请日：2009-12-10
申请人： Hou-Shin Chen , Wen Gao
发明人： Hou-Shin Chen , Wen Gao
IPC分类号： H04N7/12 , H04N11/04 , H04L1/00 , H03M13/13 , H03M13/00 , H04L27/20 , H04L27/22 , H04L27/38 , H04N21/2383 , H04N21/438
CPC分类号： H03M13/6555 , H03M13/136 , H04L1/0003 , H04L1/0041 , H04L1/0057 , H04L1/0072 , H04L27/20 , H04L27/22 , H04L27/38 , H04N21/2383 , H04N21/4382
摘要： A frame header of Forward Error Correction (FEC) is provided, suitable for using in the DVB-C2 Standard. In the DVB-C2 Standard, Adaptive Coding and Modulation (ACM) or Variable Coding and Modulation (VCM) is applied to each FEC block to provide as much flexibility as possible. As a result, a frame header is attached in front of each FEC frame to inform the coding rate, modulation type and physical layer pipe identifier. Besides the signaling of physical layer related information, the FEC frame header has to provide a structure so that it can be easily and reliably detected in the receiver. Motivated by the need in DVB-C2 Standard, an efficient and reliable FEC header suitable for DVB-C2 Standard is provided in at least one implementation in this disclosure that combines use of two different modulation types for the header information. In addition, the detection Method of the FEC header is described.
摘要翻译：提供了前向纠错（FEC）的帧头，适合在DVB-C2标准中使用。在DVB-C2标准中，自适应编码和调制（ACM）或可变编码和调制（VCM）被应用于每个FEC块以提供尽可能多的灵活性。结果，在每个FEC帧的前面附加帧头，以通知编码率，调制类型和物理层管道标识符。除了物理层相关信息的信令之外，FEC帧报头必须提供一种可以在接收机中容易且可靠地检测的结构。在DVB-C2标准中的需求驱动下，在本公开的至少一个实现中提供了适用于DVB-C2标准的高效且可靠的FEC报头，其结合了用于报头信息的两种不同调制类型的使用。另外，描述FEC报头的检测方法。

12. 发明申请

US20150065185A1 METHOD AND APPARATUS FOR DETECTING TRANSMITTERS FOR A WHITE SPACE DEVICE 有权
标题翻译：用于检测白色空间设备的发射机的方法和装置
公开(公告)号：US20150065185A1
公开(公告)日：2015-03-05
申请号：US13520382
申请日：2010-01-15
申请人： Paul Gothard Knutson , Wen Gao , Benyuan Zhang , Hou-Shin Chen
发明人： Paul Gothard Knutson , Wen Gao , Benyuan Zhang , Hou-Shin Chen
IPC分类号： H04B1/04 , H04W28/04
CPC分类号： H04B1/0475 , H04L12/66 , H04N21/43615 , H04N21/43637 , H04W28/04
摘要： The invention relates to a wireless home gateway apparatus and methods of wirelessly delivering audio and/or video programs between a home gateway and a client and mitigating interference thereon. Specifically, the present invention relates to transmitting an audio/video program on two white space channels and alternately stopping transmission on one of said channels to search for external transmissions on the white space channel. The present invention permits the wireless home gateway to continuously transmit an audio/video program to a client while periodically searching for transmitters on each of the white space channels.
摘要翻译：本发明涉及无线家庭网关设备和在家庭网关和客户端之间无线地传送音频和/或视频节目的方法，并减轻其上的干扰。具体而言，本发明涉及在两个白色空间信道上发送音频/视频节目，并且交替地停止在所述信道之一上的传输以搜索空白信道上的外部传输。本发明允许无线家庭网关在每个白色空间信道周期性地搜索发射机的同时，将音频/视频节目连续发送到客户端。

13. 发明申请

US20130058247A1 METHOD AND APPARATUS FOR COEXISTENCE OF DIFFERENT BANDWIDTH SYSTEMS IN TV WHITE SPACE 有权
标题翻译：电视白色空间中不同带状系统共存的方法与装置
公开(公告)号：US20130058247A1
公开(公告)日：2013-03-07
申请号：US13697016
申请日：2011-05-10
申请人： Hou-Shin Chen , Wen Gao
发明人： Hou-Shin Chen , Wen Gao
IPC分类号： H04W72/04 , H04W24/00
CPC分类号： H04W72/1215 , H04W16/14
摘要： Methods and apparatus of slot time synchronization for coexistence of 5 MHz, 10 MHz, and 20 MHz systems in TV white space are provided. The methods and apparatus extend concepts used in traditional 802.11 applications in the MAC layer so that networks that overlap in frequency and space can have access opportunities to TV white space channels. Several passive mechanisms are described which use bits of traditional 802.11 MAC Management Protocol Data Units to receive information related to the slot time of other overlapped networks. An active approach is described that uses measurements from a radio resource measurement service to adjust the slot time of stations in a network to that of the lowest bandwidth overlapped network in frequency and space.
摘要翻译：提供了在TV空白区域中共享5 MHz，10 MHz和20 MHz系统的时隙时间同步的方法和设备。这些方法和设备扩展了MAC层中传统802.11应用中使用的概念，使得在频率和空间上重叠的网络可以获得电视空白信道的访问机会。描述了几种被动机制，其使用传统的802.11MAC管理协议数据单元的位来接收与其他重叠网络的时隙时间有关的信息。描述了一种主动方法，其使用来自无线电资源测量服务的测量来将网络中的站的时隙时间调整为频率和空间中最低带宽重叠网络的时隙时间。

14. 发明申请

US20110222610A1 FEC FRAME HEADER DESIGN FOR CABLE TELEVISION SIGNALS 有权
标题翻译：用于电缆电视信号的FEC帧头设计
公开(公告)号：US20110222610A1
公开(公告)日：2011-09-15
申请号：US12998660
申请日：2009-11-17
申请人： Wen Gao , Hou-Shin Chen
发明人： Wen Gao , Hou-Shin Chen
IPC分类号： H04N7/32
CPC分类号： H04L1/0057 , H03M13/136 , H03M13/6555 , H04L1/0003 , H04L1/0072 , H04L27/20 , H04L27/22
摘要： An efficient and reliable encoding method suitable for header information in a digital cable television transmission system is provided. An embodiment is shown for FEC frame headers in a DVB-C2 standard, along with the detection algorithm for the FEC header. In the DVB-C2 Standard, Adaptive Coding and Modulation (ACM) or Variable Coding and Modulation (VCM) is applied to each FEC block to provide as much flexibility as possible. As a result, a frame header is attached in front of each FEC frame to inform the coding rate, modulation type and physical layer pipe identifier. Besides the signaling of physical layer related information, the FEC frame header has to provide a structure so that it can be easily and reliably detected in the receiver. Motivated by the need in DVB-C2 Standard, an efficient and reliable method and apparatus to encode the FEC header for DVB-C2 Standard is provided in at least one implementation in this disclosure. In addition, the detection algorithm of the FEC header is described.
摘要翻译：提供了一种适用于数字有线电视传输系统中标题信息的有效可靠的编码方法。示出了DVB-C2标准中的FEC帧头的实施例以及用于FEC报头的检测算法。在DVB-C2标准中，自适应编码和调制（ACM）或可变编码和调制（VCM）被应用于每个FEC块以提供尽可能多的灵活性。结果，在每个FEC帧的前面附加帧头，以通知编码率，调制类型和物理层管道标识符。除了物理层相关信息的信令之外，FEC帧报头必须提供一种可以在接收机中容易且可靠地检测的结构。受DVB-C2标准的需求的驱动，在本公开的至少一个实现中提供了一种用于对DVB-C2标准的FEC报头进行编码的有效且可靠的方法和装置。另外，描述FEC报头的检测算法。

15. 发明申请

US20110013731A1 SPECTRUM SENSING FOR DMB-T SYSTEMS USING PN FRAME HEADERS 审中-公开
标题翻译：使用PN框架头进行DMB-T系统的光谱感应
公开(公告)号：US20110013731A1
公开(公告)日：2011-01-20
申请号：US12733568
申请日：2008-07-23
申请人： Hou-Shin Chen , Wen Gao
发明人： Hou-Shin Chen , Wen Gao
IPC分类号： H04L27/06
CPC分类号： H04L27/06 , H04L27/2602 , H04L27/2647 , H04N5/4401 , H04W72/02
摘要： This dissertation addresses the intersection of personal wireless technology and computational intelligence. The primary research issue addressed is the organization of radio domain knowledge into data structures processable in real-time that integrate machine learning and natural language processing technology into software radio. The thesis defines and develops the cognitive radio architecture. The features needed in the architecture are derived from cognitive radio use cases. These include inferring user communications context, shaping access-network demand, and realizing a protocol for real-time radio spectrum rental. Mathematical foundations for the knowledge-representation architecture are derived by applying point-set topology to the requirements of the use cases. This results in the set-theoretic ontology of radio knowledge defined in the Radio Knowledge Representation Language (RKRL). The mathematical analysis also demonstrates that isochronous radio software is not Turing-computable. Instead, it is constrained to a bounded-recursive subset of the total functions. A rapid-prototype cognitive radio, CR1, was developed to apply these mathematical foundations in a simulated environment. CR1 demonstrated the principles of cognitive radio and focused the research issues. This led to an important contribution of this dissertation, the cognitive radio architecture. This is an open architecture framework for integrating agent-based control, natural language processing, and machine learning technology into software-defined radio platforms.
摘要翻译：本论文涉及个人无线技术与计算机智能。解决的主要研究问题是将无线电领域知识组织到可以实时处理的数据结构中，将机器学习和自然语言处理技术整合到软件无线电中。论文定义和发展了认知无线电架构。架构中需要的功能来源于认知无线电用例。这些包括推断用户通信环境，整形接入网络需求，实现实时无线频谱租用协议。知识表示架构的数学基础是通过将点集拓扑应用于用例的要求而得出的。这导致无线电知识表示语言（RKRL）中定义的无线电知识的集合理论本体论。数学分析还表明等时无线电软件不是图灵可计算的。相反，它被限制为总函数的有界递归子集。开发了一种快速原型认知无线电CR1，以在模拟环境中应用这些数学基础。 CR1展示了认知无线电的原理，并集中研究问题。这导致了本论文，认知无线电架构的重要贡献。这是一个开放架构框架，用于将基于代理的控制，自然语言处理和机器学习技术集成到软件定义的无线电平台中。

16. 发明申请

US20100329405A1 TIME-FREQUENCY SYNCHRONIZATION AND FRAME NUMBER DETECTION FOR DMB-T SYSTEMS 审中-公开
标题翻译： DMB-T系统的时频同步和帧数检测
公开(公告)号：US20100329405A1
公开(公告)日：2010-12-30
申请号：US12733570
申请日：2008-07-23
申请人： Hou-shin Chen , Wen Gao
发明人： Hou-shin Chen , Wen Gao
IPC分类号： H04L7/00
CPC分类号： H04L7/08 , H04L7/041 , H04L7/043 , H04L27/2602 , H04L27/2656 , H04L27/2675
摘要： A DMB-T receiver supports a single carrier (SC) form of modulation and a multi-carrier form of modulation such as orthogonal frequency division multiplexing (OFDM). Upon receiving a broadcast signal, the DMB-T receiver downconverts the received broadcast signal to a received base-band signal and determines frame timing synchronization from the received signal as a function of frame header mode 1 and frame header mode 3 by correlating groups of received symbols spaced at least two signal frames apart within a sample shift value in a range of plus or minus one.
摘要翻译： DMB-T接收机支持单载波（SC）形式的调制和诸如正交频分复用（OFDM）的多载波调制形式。在接收到广播信号时，DMB-T接收机将所接收的广播信号下变频为接收到的基带信号，并根据接收信号确定帧定时同步，作为帧头模式1和帧头模式3的函数，符号间隔至少两个信号帧在一个或多个范围内的样本移位值内。

17. 发明申请

US20100202574A1 SPECTRUM SENSING FOR OFDM SIGNALS BY UTILIZING PILOT TONES 有权
标题翻译：用于OFDM信号的频谱感测通过使用PILOT TONES
公开(公告)号：US20100202574A1
公开(公告)日：2010-08-12
申请号：US12452629
申请日：2007-12-06
申请人： Hou-Shin Chen , Wen Gao
发明人： Hou-Shin Chen , Wen Gao
IPC分类号： H04L27/06
CPC分类号： H04L27/2647
摘要： An apparatus comprises a downconverter for providing a signal that may be a received orthogonal frequency division multiplexed (OFDM) symbols from a selected channel, each OFDM symbol comprising N subcarriers at least some of which are pilot subcarriers; and a processor that (a) correlates the received OFDM symbols for providing at least one correlated value, (b) generates a metric value as a function of the at least one correlated value and (b) compares the metric value to a threshold value for detecting if an incumbent signal is present.
摘要翻译：一种装置包括下变频器，用于提供可以是来自所选信道的接收的正交频分复用（OFDM）符号的信号，每个OFDM符号包括N个子载波，其中至少一些是导频子载波; （a）使所接收的OFDM符号相关联以提供至少一个相关值，（b）生成作为所述至少一个相关值的函数的度量值，以及（b）将度量值与阈值进行比较，以便检测是否存在现有信号。

18. 发明授权

US09350489B2 FEC frame header design for cable television signals 有权
标题翻译：有线电视信号的FEC帧头设计
公开(公告)号：US09350489B2
公开(公告)日：2016-05-24
申请号：US12998660
申请日：2009-11-17
申请人： Wen Gao , Hou-Shin Chen
发明人： Wen Gao , Hou-Shin Chen
IPC分类号： H04L27/20 , H04L1/00 , H03M13/13 , H03M13/00 , H04L27/22
CPC分类号： H04L1/0057 , H03M13/136 , H03M13/6555 , H04L1/0003 , H04L1/0072 , H04L27/20 , H04L27/22
摘要： An efficient and reliable encoding method suitable for header information in a digital cable television transmission system is provided. An embodiment is shown for FEC frame headers in a DVB-C2 standard, along with the detection algorithm for the FEC header. In the DVB-C2 Standard, Adaptive Coding and Modulation (ACM) or Variable Coding and Modulation (VCM) is applied to each FEC block to provide as much flexibility as possible. As a result, a frame header is attached in front of each FEC frame to inform the coding rate, modulation type and physical layer pipe identifier. Besides the signaling of physical layer related information, the FEC frame header has to provide a structure so that it can be easily and reliably detected in the receiver. Motivated by the need in DVB-C2 Standard, an efficient and reliable method and apparatus to encode the FEC header for DVB-C2 Standard is provided in at least one implementation in this disclosure. In addition, the detection algorithm of the FEC header is described.
摘要翻译：提供了一种适用于数字有线电视传输系统中标题信息的有效可靠的编码方法。示出了DVB-C2标准中的FEC帧头的实施例以及用于FEC报头的检测算法。在DVB-C2标准中，自适应编码和调制（ACM）或可变编码和调制（VCM）被应用于每个FEC块以提供尽可能多的灵活性。结果，在每个FEC帧的前面附加帧头，以通知编码率，调制类型和物理层管道标识符。除了物理层相关信息的信令之外，FEC帧报头必须提供一种可以在接收机中容易且可靠地检测的结构。受DVB-C2标准的需求的驱动，在本公开的至少一个实现中提供了一种用于对DVB-C2标准的FEC报头进行编码的有效且可靠的方法和装置。另外，描述FEC报头的检测算法。

19. 发明授权

US09282557B2 White space usage for wireless local area network devices 有权
公开(公告)号：US09282557B2
公开(公告)日：2016-03-08
申请号：US13817560
申请日：2010-08-26
申请人： Wen Gao , Hou-Shin Chen
发明人： Wen Gao , Hou-Shin Chen
IPC分类号： H04J4/00 , H04J3/06 , H04W72/04 , H04W36/00 , H04W48/16 , H04W56/00 , H04W84/12 , H04W88/08
CPC分类号： H04W72/0446 , H04J3/0641 , H04J3/0673 , H04W16/14 , H04W36/0061 , H04W48/10 , H04W48/16 , H04W56/0015 , H04W56/002 , H04W72/044 , H04W84/12 , H04W88/08
摘要： A method and apparatus are described including defining a neighbor set for each access point, selecting a first clock in a first access point, the selected clock having a highest accuracy as a grand master clock, advising neighboring access points to synchronize with the selected grand master clock and transmitting a message to schedule a quiet period based on the grand master clock. Also described are a method and apparatus including receiving a beacon message, inspecting clock descriptors in the beacon message, selecting a best master clock responsive to the inspection and transmitting a message to schedule a quiet period based on the selected best master clock.

20. 发明申请

US20150189456A1 METHOD AND APPARATUS FOR SPECTRUM SENSING OF WIRELESS MICROPHONE SIGNALS 审中-公开
标题翻译：无线麦克风信号频谱感测的方法与装置
公开(公告)号：US20150189456A1
公开(公告)日：2015-07-02
申请号：US13980069
申请日：2011-01-18
申请人： Hou-Shin Chen , Wen Gao
发明人： Hou-Shin Chen , Wen Gao
IPC分类号： H04R29/00 , H04R3/00
CPC分类号： H04R29/004 , H04K3/822 , H04K2203/12 , H04R3/00 , H04R2410/00 , H04R2420/07 , H04R2430/00
摘要： A method and apparatus for spectrum sensing for general wireless microphone signals are provided. The spectrum sensing algorithm developed makes use of the property that the autocorrelation function of a wireless microphone signal is a sinusoidal function provided that the frequency deviation is much smaller than the carrier frequency and the correlation delay is small. Based on this property, a simple spectrum sensing algorithm for the wireless microphone signal is designed by computing the auto-correlation function of the received signal and matched filtering of the sinusoidal function. The tones detected are further verified to see if they are located at one of the possible wireless microphone frequencies.
摘要翻译：提供了一种用于一般无线麦克风信号的频谱感测的方法和装置。开发的频谱感知算法利用无线麦克风信号的自相关函数为正弦函数的性质，只要频率偏差远小于载波频率，相关延迟小。基于该性质，通过计算接收信号的自相关函数和正弦函数的匹配滤波来设计无线麦克风信号的简单频谱感知算法。检测到的音调被进一步验证，以查看它们是否位于可能的无线麦克风频率之一。

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