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1. 发明申请

US20180109405A1 METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL AREA NETWORK SYSTEM 审中-公开
公开(公告)号：US20180109405A1
公开(公告)日：2018-04-19
申请号：US15841385
申请日：2017-12-14
申请人： Wi-Fi One, LLC
发明人： Dae Won LEE , Dong Wok ROH , Byeong Woo KANG , Yong Ho SEOK , Yu Jin NOH , Bong Hoe KIM
IPC分类号： H04L27/26 , H04L1/00 , H04W84/12 , H04L27/22 , H04L27/233 , H04L27/227 , H04L27/156 , H04L27/148 , H04L27/144 , H04L27/14 , H04L25/49 , H04L27/00 , H04N5/44 , H04Q1/46 , H03M5/12 , H04W28/06
CPC分类号： H04L27/261 , H03M5/12 , H04B7/0413 , H04L1/0041 , H04L1/0061 , H04L25/4904 , H04L27/14 , H04L27/144 , H04L27/148 , H04L27/1563 , H04L27/22 , H04L27/2273 , H04L27/2331 , H04L27/2332 , H04L27/2613 , H04L27/2647 , H04L2027/0028 , H04N5/4401 , H04Q1/46 , H04W28/06 , H04W84/12
摘要： A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.

2. 发明授权

US09413368B2 Auto frequency control circuit and receiver 有权
标题翻译：自动频率控制电路和接收机
公开(公告)号：US09413368B2
公开(公告)日：2016-08-09
申请号：US14974922
申请日：2015-12-18
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Tuan Thanh Ta , Hidenori Okuni , Akihide Sai , Masanori Furuta
IPC分类号： H03D3/02 , H03L7/099 , H04L27/26 , H03L7/093 , H03D3/00 , H03L7/18
CPC分类号： H03L7/18 , H03D3/007 , H03L7/093 , H04L27/0014 , H04L27/2657 , H04L2027/0028 , H04L2027/0053 , H04L2027/0065
摘要： According to an embodiment, an auto frequency control circuit includes a peak time detector, a first time shifter a zero-crossing time detector, and a second time shifter. The peak time detector detects, from the digital signal, a first time at which the digital signal exhibits one of a maximal value and a minimal value. The first time shifter adds or subtracts a first natural number multiple of the predetermined period to or from the first time. The zero-crossing time detector detects, from the digital signal, a second time at which the digital signal exhibits one of a positive zero-crossing and a negative zero-crossing. The second time shifter adds or subtracts the first natural number multiple of the predetermined period to or from the second time.
摘要翻译：根据实施例，自动频率控制电路包括峰值时间检测器，第一时间移位器，过零时间检测器和第二时间移位器。峰值时间检测器从数字信号中检测数字信号呈现最大值和最小值之一的第一次。第一时间移位器向第一次或从第一次添加或减去预定周期的第一自然数倍数。过零时间检测器从数字信号检测数字信号呈现正过零和负过零之一的第二时间。第二时间移位器向第二次添加或从第二次减去预定时段的第一自然数倍数。

3. 发明申请

US20150303974A1 Independent Multi-Band Tuning 审中-公开
标题翻译：独立多频段调谐
公开(公告)号：US20150303974A1
公开(公告)日：2015-10-22
申请号：US14683473
申请日：2015-04-10
申请人： SKYWORKS SOLUTIONS, INC.
发明人： William J. Domino
IPC分类号： H04B1/401 , H04B1/52 , H04L5/08
CPC分类号： H04L5/08 , H04B1/006 , H04B1/0458 , H04L27/0014 , H04L2027/0028
摘要： Various implementations include circuits, devices and/or methods that enable tuning a multi-band antenna such that two or more of the bands are tuned independently of one another, whereby tuning one band is decoupled from tuning another band. Some implementations include a multi-band tuning arrangement having first and second tunable two-terminal circuits. The first tunable two-terminal circuit has a low transmission impedance associated with a first frequency band, and a high transmission impedance associated with a second frequency band, the first tunable two-terminal circuit including a first control element to selectively adjust a first resonant frequency associated with the first frequency band. The second tunable two-terminal circuit having a high transmission impedance associated with the first frequency band, and a low transmission impedance associated with the second frequency band, the second tunable circuit including a second control element provided to adjust a second resonant frequency associated with the second frequency band.
摘要翻译：各种实施方式包括能够调谐多频带天线的电路，设备和/或方法，使得两个或更多个频带彼此独立地被调谐，由此调谐一个频带与调谐另一频带分离。一些实现方式包括具有第一和第二可调谐二端电路的多频带调谐装置。第一可调谐二端电路具有与第一频带相关联的低传输阻抗和与第二频带相关联的高传输阻抗，第一可调谐二端电路包括第一控制元件以选择性地调节第一谐振频率与第一频带相关联。具有与第一频带相关联的高传输阻抗的第二可调谐二端电路和与第二频带相关联的低传输阻抗，第二可调电路包括第二控制元件，用于调整与第二频带相关联的第二谐振频率第二频带。

4. 发明申请

US20140321526A1 Frequency Offset Estimation in Communication Devices 有权
标题翻译：通信设备中的频率偏移估计
公开(公告)号：US20140321526A1
公开(公告)日：2014-10-30
申请号：US14361399
申请日：2012-12-10
申请人： ST-Ericsson SA
发明人： Leela Srikar Muppirisetty , Aravindh Krishnamoorthy
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H04L2027/0028 , H04L2027/0042
摘要： The present subject matter discloses a system and a method for estimating a frequency offset in communication devices. In one embodiment, the method of estimating a frequency offset in a communication device comprises generating a reconstructed signal based at least in part on a channel impulse response (CIR) corresponding to a received signal. Further, a normalization matrix is determined for the reconstructed signal. Thereafter, based at least in part on the normalization matrix and the reconstructed signal, the frequency offset is estimated such that the frequency offset corresponds to a maximum normalized-correlation between the reconstructed signal and the received signal.
摘要翻译：本主题公开了一种用于估计通信设备中的频率偏移的系统和方法。在一个实施例中，估计通信设备中的频率偏移的方法包括至少部分地基于对应于接收信号的信道脉冲响应（CIR）来生成重构信号。此外，为重构信号确定归一化矩阵。此后，至少部分地基于归一化矩阵和重构信号，估计频率偏移，使得频率偏移对应于重构信号和接收信号之间的最大归一化相关。

5. 发明申请

US20140105344A1 METHOD AND APPARATUS FOR RADIO FREQUENCY (RF) PULSE SYNCHRONIZATION IN SUPER REGENERATIVE RECEIVER (SRR) 有权
标题翻译：超级再生接收机（SRR）中无线电频率（RF）脉冲同步的方法和装置
公开(公告)号：US20140105344A1
公开(公告)日：2014-04-17
申请号：US14050616
申请日：2013-10-10
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Tuhin Subhra CHAKRABORTY , Kiran BYNAM
IPC分类号： H04L7/00 , H04L7/033
CPC分类号： H04L7/0033 , H03D11/06 , H04B1/7183 , H04L7/033 , H04L27/0014 , H04L2027/0028 , H04L2027/0067
摘要： A method for radio frequency (RF) pulse synchronization in a super regenerative receiver (SRR), includes receiving an input signal including an asymmetric preamble, and estimating a phase difference between the input signal and a quench signal based on the asymmetric preamble. The method further includes compensating for the phase difference.
摘要翻译：一种用于超级再生接收机（SRR）中的射频（RF）脉冲同步的方法，包括接收包括不对称前导码的输入信号，以及基于所述不对称前导码来估计所述输入信号和骤冷信号之间的相位差。该方法还包括补偿相位差。

6. 发明申请

US20130336257A1 METHOD AND APPARATUS FOR TRANSMITTING PLCP FRAME IN WIRELESS LOCAL AREA NETWORK SYSTEM 有权
公开(公告)号：US20130336257A1
公开(公告)日：2013-12-19
申请号：US13943572
申请日：2013-07-16
申请人： LG ELECTRONICS INC.
发明人： Dae Won LEE , Dong Wook ROH , Byeong Woo KANG , Yong Ho SEOK , Yu Jin NOH , Bong Hoe KIM
IPC分类号： H04W84/12
CPC分类号： H04L27/261 , H03M5/12 , H04B7/0413 , H04L1/0041 , H04L1/0061 , H04L25/4904 , H04L27/14 , H04L27/144 , H04L27/148 , H04L27/1563 , H04L27/22 , H04L27/2273 , H04L27/2331 , H04L27/2332 , H04L27/2613 , H04L27/2647 , H04L2027/0028 , H04N5/4401 , H04Q1/46 , H04W28/06 , H04W84/12
摘要： A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIG field.

7. 发明授权

US08571141B2 Carrier recovery device and method 有权
标题翻译：载波恢复装置及方法
公开(公告)号：US08571141B2
公开(公告)日：2013-10-29
申请号：US12793432
申请日：2010-06-03
申请人： Kuang-Peng Cheng , Ming-Chang Chen
发明人： Kuang-Peng Cheng , Ming-Chang Chen
IPC分类号： H04L27/22
CPC分类号： H04L27/0014 , H04L2027/0028 , H04L2027/0057 , H04L2027/0067 , H04L2027/0075
摘要： A carrier recovery device and a carrier recovery method are provided. The device includes a phase detection module, a computation module, a phase angle adjustment module, a loop filter, and a conversion module. The phase detection module receives an IF signal, and detects a sine and a cosine signals corresponding to the IF signal. The computation module receives the sine and the cosine signals, and computes a phase angle between the sine and the cosine signals. The phase angle adjustment module adjusts the phase angle according to one of the sine and the cosine signals and a threshold. The loop filter generates a frequency offset angle according to the phase angle. The conversion module generates a sine and a cosine parameters according to the frequency offset angle, and transfers the sine and the cosine parameters to the phase detection module.
摘要翻译：提供载波恢复装置和载波恢复方法。该装置包括相位检测模块，计算模块，相位角调整模块，环路滤波器和转换模块。相位检测模块接收IF信号，并检测与IF信号对应的正弦和余弦信号。计算模块接收正弦和余弦信号，并计算正弦和余弦信号之间的相位角。相位角调整模块根据正弦和余弦信号之一调整相位角和阈值。环路滤波器根据相位角产生频率偏移角。转换模块根据频率偏移角生成正弦和余弦参数，并将正弦和余弦参数传送到相位检测模块。

8. 发明申请

US20130156127A1 OFDM Synchronization and Signal Channel Estimation 审中-公开
标题翻译： OFDM同步和信号信道估计
公开(公告)号：US20130156127A1
公开(公告)日：2013-06-20
申请号：US13473190
申请日：2012-05-16
申请人： Donald L. Schilling
发明人： Donald L. Schilling
IPC分类号： H04L25/02
CPC分类号： H04L25/02 , H04B1/707 , H04B7/0697 , H04B2001/70724 , H04L1/0071 , H04L1/06 , H04L5/0023 , H04L25/0208 , H04L25/0226 , H04L27/2613 , H04L27/2626 , H04L27/2655 , H04L2027/0028 , H04L2027/0055 , H04L2027/0091
摘要： Synchronization and signal channel estimation is accomplished by adding pilot signals to the outputs of IFFT encoders, i.e. after encoding of data/symbols, in a spread spectrum wireless communication system utilizing uniquely designed OFDM transmitters, OFDM receivers and OFDM systems and methods.
摘要翻译：通过使用独特设计的OFDM发射机，OFDM接收机和OFDM系统和方法的扩频无线通信系统中的IFFT编码器的输出即数据/符号编码之后，附加导频信号来实现同步和信号信道估计。

9. 发明申请

US20130106641A1 CARRIER FREQUENCY OFFSET COMPENSATION IN BEAMFORMING SYSTEMS 有权
标题翻译：波束形成系统中的载波频偏补偿
公开(公告)号：US20130106641A1
公开(公告)日：2013-05-02
申请号：US13284606
申请日：2011-10-28
申请人： Nirmal C. Warke , Srinath Hosur , Venugopal Gopinathan
发明人： Nirmal C. Warke , Srinath Hosur , Venugopal Gopinathan
IPC分类号： H01Q3/00 , G01S13/02
CPC分类号： H04L27/0014 , H04B7/0617 , H04B7/086 , H04L2027/0016 , H04L2027/0018 , H04L2027/0028
摘要： A method for communicating signals in an ultra high bandwidth system that compensates for carrier frequency offset is provided. A baseband transmit signal having a plurality of data bits is generated. The baseband transmit signal is upconverted to a radio frequency (RF) transmit signal using a first local oscillator signal having a first carrier frequency. An offset cancellation for the offset between the first carrier frequency and a second carrier frequency for a second local oscillator signal that is used to downconvert an RF receive signal is calculated. The offset cancellation is applied to a plurality of phase rotators, and the RF transmit signal is transmitted over a phased array.
摘要翻译：提供了一种用于在补偿载波频率偏移的超高带宽系统中传送信号的方法。产生具有多个数据位的基带发送信号。使用具有第一载波频率的第一本机振荡器信号将基带发射信号上变频到射频（RF）发射信号。计算用于下变频RF接收信号的第二本地振荡器信号的第一载波频率和第二载波频率之间的偏移的偏移消除。偏移消除被应用于多个相位旋转器，并且RF发送信号通过相控阵列发送。

10. 发明申请

US20120321003A1 SYSTEM AND METHOD FOR FREQUENCY OFFSETTING OF INFORMATION COMMUNICATED IN MIMO-BASED WIRELESS NETWORKS 有权
标题翻译：基于MIMO的无线网络中信息通信的频率偏移的系统与方法
公开(公告)号：US20120321003A1
公开(公告)日：2012-12-20
申请号：US13595177
申请日：2012-08-27
申请人： Colin H. Soul , Roland A. Smith , Stephen G. Rayment
发明人： Colin H. Soul , Roland A. Smith , Stephen G. Rayment
IPC分类号： H04L27/00
CPC分类号： H03J7/04 , H04B7/0413 , H04B7/10 , H04L27/0014 , H04L2027/0016 , H04L2027/0028
摘要： A communications system includes a multiple-input/multiple-output (MIMO) architecture for high capacity switched mesh networks. The MIMO architecture has a plurality of radio frequency chains. One of the plurality of radio frequency chains is configured to apply a first frequency offset to a base frequency of an output signal to generate a first transmitting frequency; and another of the plurality of radio frequency chains being configured to apply a second frequency offset to the base frequency to generate a second transmitting frequency. The system uses the carrier frequency offset to lock the clock of the master subsystem to the clock of the slave subsystem, thereby enabling bandwidth expansion to be employed on the MIMO data streams.
摘要翻译：通信系统包括用于大容量交换网状网络的多输入/多输出（MIMO）架构。 MIMO架构具有多个射频链。多个射频链中的一个被配置为对输出信号的基本频率施加第一频率偏移以产生第一发射频率; 并且所述多个射频链中的另一个被配置为对所述基本频率施加第二频率偏移以产生第二发射频率。系统使用载波频率偏移将主子系统的时钟锁定到从属子系统的时钟，从而使得能够在MIMO数据流上采用带宽扩展。

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