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1. 发明申请

US20170214926A1 SYSTEM AND METHOD FOR TRANSCODING DATA 有权
公开(公告)号：US20170214926A1
公开(公告)日：2017-07-27
申请号：US15483884
申请日：2017-04-10
申请人： Keangpo Ricky Ho , Shi Cheng
发明人： Keangpo Ricky Ho , Shi Cheng
IPC分类号： H04N19/40 , H04N19/184 , H04N19/115
CPC分类号： H04N19/40 , H04N19/115 , H04N19/184
摘要： A method for transcoding data comprises receiving an input stream of data formatted according to a USB standard, the input stream is partitioned into a sequence of blocks having a fixed length. At least one input block of the input stream comprises one or more data symbols and one or more control symbols, the one or more control symbols include one or more general control symbols. The method also includes transcoding the at least one input block to generate at least one output block comprising a synchronization block and a control/data block. The control/data block comprises the one or more data symbols of the at least one input block, a representation of the one or more general control symbols of the at least one input block, and a plurality of indicators indicating locations of the one or more data symbols and control symbols in the at least one input block.

2. 发明授权

US08665693B1 Uplink single carrier frequency division multiple access multiple-input multiple-output soft interference cancellation receiver 有权
标题翻译：上行单载波频分多址多输入多输出软干扰消除接收机
公开(公告)号：US08665693B1
公开(公告)日：2014-03-04
申请号：US13212572
申请日：2011-08-18
申请人： Shi Cheng , Ravi Narasimhan
发明人： Shi Cheng , Ravi Narasimhan
IPC分类号： H04J9/00
CPC分类号： H04L1/005 , H04B7/0413 , H04L1/0048 , H04L25/0204 , H04L25/022 , H04L25/0228 , H04L25/03891
摘要： A system and method are provided for Soft Interference Cancellation (SIC) in receiving Single Carrier Frequency Division Multiple Access (SC-FDMA) Multiple-Input Multiple Output (MIMO) signals. A receiver with Mr antennas accepts multicarrier signals transmitted simultaneously, with N overlapping carrier frequencies. The receiver removes a cyclic prefix (CP), and fast Fourier transforms (FFT) the multicarrier signal from each antenna, supplying Mr number of N-tone signals y. Using either parallel SIC (P-SIC) or successive SIC (S-SIC), interference is canceled in each of the Mr signals, and soft symbols are supplied for each of U layers. Interference is canceled using the P-SIC process by parallel processing the U layers in an i-th iteration, in response to feedback from an (i−1)th iteration. Alternatively, interference is canceled using the S-SIC process by sequentially processing the U layers in an i-th iteration, in the order of u0,u1, . . . , uU−1, using feedback generated from previously processed layers.
摘要翻译：在接收单载波频分多址（SC-FDMA）多输入多输出（MIMO）信号的情况下，提供了用于软干扰消除（SIC）的系统和方法。具有Mr天线的接收机接收同时传输的多载波信号，具有N个重叠载波频率。接收器从每个天线去除循环前缀（CP）和快速傅里叶变换（FFT）多载波信号，提供Mr个N音信号y。使用并行SIC（P-SIC）或连续SIC（S-SIC），在每个Mr信号中消除干扰，并为每个U层提供软符号。响应于来自第（i-1）次迭代的反馈，使用P-SIC处理通过在第i次迭代中并行处理U层来消除干扰。或者，通过在第i次迭代中以u0，u1，...的顺序依次处理U层，使用S-SIC处理来消除干扰。。。，uU-1，使用从先前处理的层生成的反馈。

3. 发明授权

US08238496B1 Multiuser multiple-input multiple-output (MU-MIMO) channel estimation for multicarrier communications 有权
标题翻译：用于多载波通信的多用户多输入多输出（MU-MIMO）信道估计
公开(公告)号：US08238496B1
公开(公告)日：2012-08-07
申请号：US12782066
申请日：2010-05-18
申请人： Ravi Narasimhan , Shi Cheng
发明人： Ravi Narasimhan , Shi Cheng
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04L25/0208 , H04L25/022 , H04L25/0232 , H04L27/2647
摘要： Provided are a system and method of estimating channels for a plurality of multicarrier signals in a wireless receiver. A receiver accepts a plurality of multicarrier signals, transmitted simultaneously from a plurality of transmitters, with overlapping carrier frequencies and nominally orthogonal reference signals. For each multicarrier signal, a reference signal is recovered including a plurality of adjacent subcarrier frequencies carrying predetermined symbols. A channel estimate is found across the plurality of adjacent subcarrier frequencies, for each multicarrier signal channel, by compensating for a loss of orthogonality between reference signals, in response to assuming a linear phase rotation for each channel across the plurality of adjacent reference signal subcarriers, and a constant amplitude for each channel across the plurality of adjacent reference signal subcarriers. More explicitly, the assumption of linear phase rotation and constant amplitude permits a Direction of Arrival (DoA) algorithm to be used.
摘要翻译：提供了一种在无线接收机中估计多个多载波信号的信道的系统和方法。接收机接收多个由多个发射机同时传输的多载波信号，具有重叠的载波频率和名义上正交的参考信号。对于每个多载波信号，恢复包括携带预定符号的多个相邻子载波频率的参考信号。响应于假设对于多个相邻参考信号子载波的每个信道的线性相位旋转，通过补偿参考信号之间的正交性的损失，针对每个多载波信号信道在多个相邻副载波频率上发现信道估计，以及跨越多个相邻参考信号子载波的每个信道的恒定幅度。更明确地说，线性相位旋转和恒定幅度的假设允许使用到达方向（DoA）算法。

4. 发明授权

US08669834B2 Substrate integrated waveguide 失效
标题翻译：基板集成波导
公开(公告)号：US08669834B2
公开(公告)日：2014-03-11
申请号：US12922588
申请日：2009-03-17
申请人： Shi Cheng , Karl Henrik Kratz , Hanna Ali Yousef
发明人： Shi Cheng , Karl Henrik Kratz , Hanna Ali Yousef
IPC分类号： H01P3/16 , H01P11/00 , H01Q13/22
CPC分类号： H01P3/121 , H01P11/002 , H05K1/024 , H05K3/002 , H05K3/0023 , H05K3/4076 , H05K3/42 , H05K2201/037 , H05K2201/09618 , H05K2203/092 , H05K2203/1572 , Y10T29/49016
摘要： A substrate integrated waveguide (10) comprises a top conductive layer (14) and a bottom conductive layer (15) provided on either sides a substrate (11). At least one wall (12, 13) of conductive material is provided in the substrate (11) to define, together with the top and bottom layers (14, 15), the waveguide. The at least one wall (12, 13) comprise a multitude of thin conductive wires densely arranged close to each other in the substrate (11) and having respective short ends connected to the top and bottom layers (14, 15). The high number of wires per surface unit in the wall (12, 13) effectively prevent significant amount of power leakage through the wall (12, 13) during operation of the substrate integrated waveguide (10).
摘要翻译：衬底集成波导（10）包括设置在衬底（11）的两侧的顶部导电层（14）和底部导电层（15）。导电材料的至少一个壁（12,13）设置在衬底（11）中以与顶层和底层（14,15）一起限定波导。所述至少一个壁（12,13）包括在所述基板（11）中彼此靠近彼此密集布置并且具有连接到所述顶层和底层（14,15）的相应短端的多根细导线。在基板集成波导（10）的操作期间，每个表面单元在壁（12,13）中的大量电线有效地防止了通过壁（12,13）的大量的电力泄漏。

5. 发明申请

US20100080305A1 Devices and Methods of Digital Video and/or Audio Reception and/or Output having Error Detection and/or Concealment Circuitry and Techniques 审中-公开
标题翻译：具有错误检测和/或隐藏电路和技术的数字视频和/或音频接收和/或输出的设备和方法
公开(公告)号：US20100080305A1
公开(公告)日：2010-04-01
申请号：US12565713
申请日：2009-09-23
申请人： Shaori Guo , Shi Cheng , Zhubing Yuan
发明人： Shaori Guo , Shi Cheng , Zhubing Yuan
IPC分类号： H04N7/64
CPC分类号： H04N21/4382 , H04N19/895 , H04N21/2383 , H04N21/2389 , H04N21/4385 , H04N21/4425
摘要： A device to output video and/or audio data (for example, corresponding to a selected channel which is one of a plurality of channels of a broadcast spectrum), the device comprising (i) baseband processor circuitry to demodulate a baseband signal into a data stream (for example, MPEG type data stream, such as an MPEG-2 transport or program data stream) having a plurality of packets including a plurality of video and/or audio packets wherein each video and/or audio packet includes video and/or audio payload, (ii) de-multiplexer circuitry, coupled to the baseband processor circuitry, to: (a) de-multiplex the data stream to obtain the video and/or audio payload of the plurality of video and/or audio packets, (b) detect and locate one or more errors in one or more of the video and/or audio packets, and (c) generate error characterization data (for example, information which is representative of the type of error and/or the location of the error in the video and/or audio payload) which is representative of or characterizes one or more errors in the one or more of the video and/or audio packets; and (iii) decoder circuitry, coupled to the de-multiplexer circuitry, to: (a) receive the video and/or audio payload and the error characterization data, and (b) conceal the one or more errors in the video and/or audio payload using the error characterization data.
摘要翻译：用于输出视频和/或音频数据的设备（例如，对应于作为广播频谱的多个频道之一的所选频道），该设备包括（i）基带处理器电路，用于将基带信号解调为数据具有包括多个视频和/或音频分组的多个分组的流（例如，MPEG类型数据流，诸如MPEG-2传输或节目数据流），其中每个视频和/或音频分组包括视频和/或音频有效载荷，（ii）耦合到基带处理器电路的去多路复用器电路，以：（a）解复用数据流以获得多个视频和/或音频分组的视频和/或音频有效载荷（ b）检测和定位一个或多个视频和/或音频分组中的一个或多个错误，以及（c）生成错误表征数据（例如，代表错误类型和/或位置的信息视频和/或音频有效载荷中的错误）呈现或表征一个或多个视频和/或音频分组中的一个或多个错误; 和（iii）耦合到解复用器电路的解码器电路，以：（a）接收视频和/或音频有效载荷和误差表征数据，以及（b）隐藏视频中的一个或多个错误和/或音频有效载荷使用错误表征数据。

6. 发明授权

US08848686B1 Single carrier-frequency-division multiple access (SC-FDMA) physical uplink control channel (PUCCH) 2/2a/2b detection 有权
标题翻译：单载波频分多址（SC-FDMA）物理上行控制信道（PUCCH）2 / 2a / 2b检测
公开(公告)号：US08848686B1
公开(公告)日：2014-09-30
申请号：US13080888
申请日：2011-04-06
申请人： Shi Cheng , Ravi Narasimhan
发明人： Shi Cheng , Ravi Narasimhan
IPC分类号： H04J3/06 , H04J11/00
CPC分类号： H04L5/0007 , H04L5/0048 , H04L25/0204 , H04L25/0228 , H04L25/03159 , H04L27/2636 , H04L27/2662 , H04L27/2695
摘要： A system and method are provided for Single Carrier-Frequency-Division Multiple Access (SC-FDMA) Physical Uplink Control Channel (PUCCH) format 2/2a/2b detection. A receiver accepts a plurality of multicarrier signals transmitted simultaneously from a plurality of transmitters, with overlapping carrier frequencies. For each multicarrier signal, a single tap measurement of time delay is performed using a Direction of Arrival (DoA) technique. After performing a back-end processing operation, PUCCH 2/2a/2b format signals are detected. The back-end processing operation is selected from one of the following options: (1) decorrelation, channel estimation, equalization per user, and decoding per user; (2) channel estimation, equalization, and decoding per user; (3) decorrelation plus maximum likelihood detection (ML) per user; and, (4) ML detection over all users. Selection criteria is also provided.
摘要翻译：提供了用于单载波 - 频分多址（SC-FDMA）物理上行链路控制信道（PUCCH）格式2 / 2a / 2b检测的系统和方法。接收机接受多个发射机同时发射的多载波信号，具有重叠的载波频率。对于每个多载波信号，使用到达方向（DoA）技术来执行时间延迟的单次测量。在执行后端处理操作之后，检测到PUCCH2 / 2a / 2b格式信号。后端处理操作从以下选项之一中选择：（1）去相关，信道估计，每个用户的均衡和每个用户的解码; （2）每个用户的信道估计，均衡和解码; （3）每个用户的去相关加最大似然检测（ML）; 和（4）对所有用户的ML检测。还提供了选择标准。

7. 发明授权

US08416759B1 Carrier frequency offset and doppler frequency estimation and correction for OFDMA and SC-FDMA 有权
标题翻译： OFDMA和SC-FDMA的载波频率偏移和多普勒频率估计和校正
公开(公告)号：US08416759B1
公开(公告)日：2013-04-09
申请号：US12848043
申请日：2010-07-30
申请人： Ravi Narasimhan , Shi Cheng
发明人： Ravi Narasimhan , Shi Cheng
IPC分类号： H04B7/208
CPC分类号： H04W56/0035
摘要： A system and method are provided for carrier frequency offset (CFO) and Doppler frequency estimation and correction for Orthogonal Frequency-Division Multiple Access (OFDMA) and Single Carrier-Frequency-Division Multiple Access (SC-FDMA) signals in a wireless communications receiver. The receiver is capable of accepting a plurality of multicarrier signals transmitted simultaneously from a plurality of transmitters, with overlapping carrier frequencies and orthogonal reference signals. For each multicarrier signal, a channel estimate is performed and the channel is equalized. Then, a frequency offset is estimated between the transmit carrier frequency of each multicarrier signal and a receiver local oscillator frequency using either the phase rotation of data constellations as a function of time or the phase rotation of channel estimates as a function of time. The receiver supplies the CFO/Doppler frequency estimates and corrects the equalized symbols prior to demodulation.
摘要翻译：提供了一种用于无线通信接收机中的载波频率偏移（CFO）和正交频分多址（OFDMA）和单载波 - 频分多址（SC-FDMA）信号的多普勒频率估计和校正的系统和方法。接收机能够接受多个发射机同时发射的多载波信号，具有重叠的载波频率和正交参考信号。对于每个多载波信号，执行信道估计并且信道被均衡。然后，使用作为时间的函数的数据星座的相位旋转或作为时间的函数的信道估计的相位旋转，估计每个多载波信号的发射载波频率和接收机本地振荡器频率之间的频率偏移。接收机提供CFO /多普勒频率估计，并在解调之前校正均衡的符号。

8. 发明授权

US08897118B1 Single carrier-frequency-division multiple access (SC-FDMA) physical uplink control channel (PUCCH) 1/1a/1b detection 有权
标题翻译：单载波频分多址（SC-FDMA）物理上行控制信道（PUCCH）1 / 1a / 1b检测
公开(公告)号：US08897118B1
公开(公告)日：2014-11-25
申请号：US13023641
申请日：2011-02-09
申请人： Shi Cheng , Ravi Narasimhan
发明人： Shi Cheng , Ravi Narasimhan
IPC分类号： H04J11/00
CPC分类号： H04W56/0035
摘要： A method is provided for Single Carrier-Frequency-Division Multiple Access (SC-FDMA) Physical Uplink Control Channel (PUCCH) format 1/1a/1b detection in a wireless communications receiver. The receiver accepts a plurality of multicarrier signals transmitted simultaneously from a plurality of transmitters, with overlapping carrier frequencies. For each multicarrier signal, a single tap measurement of time delay is performed using a Direction of Arrival (DoA) technique. In response to the single tap measurements, PUCCH 1/1a/1b format signals are detected. Prior to performing the single tap measurements, the multicarrier signals are decorrelated in the time domain, using corresponding orthogonal code covers. Subsequent to the single tap measurements, each multicarrier signal is decorrelated in the frequency domain, using a corresponding cyclic shift. Subsequent to decorrelating the multicarrier signals in the frequency domain, a Generalized Likelihood Ratio Test (GLRT) is performed for each decorrelated multicarrier signal.
摘要翻译：在无线通信接收机中提供用于单载波 - 频分多址（SC-FDMA）物理上行链路控制信道（PUCCH）格式1 / 1a / 1b检测的方法。接收机接受多个发射机同时发射的多载波信号，具有重叠的载波频率。对于每个多载波信号，使用到达方向（DoA）技术来执行时间延迟的单次测量。响应于单抽头测量，检测PUCCH 1 / 1a / 1b格式信号。在执行单抽头测量之前，多载波信号在时域中被解相关，使用对应的正交码覆盖。在单抽头测量之后，使用相应的循环移位，在频域中将每个多载波信号解相关。在对频域中的多载波信号进行去相关之后，对每个去相关的多载波信号执行广义似然比测试（GLRT）。

9. 发明申请

US20110018657A1 Substrate Integrated Waveguide 失效
标题翻译：基板集成波导
公开(公告)号：US20110018657A1
公开(公告)日：2011-01-27
申请号：US12922588
申请日：2009-03-17
申请人： Shi Cheng , Karl Henrik Kratz , Hanna Ali Yousef
发明人： Shi Cheng , Karl Henrik Kratz , Hanna Ali Yousef
IPC分类号： H01P3/12 , H01P11/00
CPC分类号： H01P3/121 , H01P11/002 , H05K1/024 , H05K3/002 , H05K3/0023 , H05K3/4076 , H05K3/42 , H05K2201/037 , H05K2201/09618 , H05K2203/092 , H05K2203/1572 , Y10T29/49016
摘要： A substrate integrated waveguide (10) comprises a top conductive layer (14) and a bottom conductive layer (15) provided on either sides a substrate (11). At least one wall (12, 13) of conductive material is provided in the substrate (11) to define, together with the top and bottom layers (14, 15), the waveguide. The at least one wall (12, 13) comprise a multitude of thin conductive wires densely arranged close to each other in the substrate (11) and having respective short ends connected to the top and bottom layers (14, 15). The high number of wires per surface unit in the wall (12, 13) effectively prevent significant amount of power leakage through the wall (12, 13) during operation of the substrate integrated waveguide (10).
摘要翻译：衬底集成波导（10）包括设置在衬底（11）的两侧的顶部导电层（14）和底部导电层（15）。导电材料的至少一个壁（12,13）设置在衬底（11）中以与顶层和底层（14,15）一起限定波导。所述至少一个壁（12,13）包括在所述基板（11）中彼此靠近彼此密集布置并且具有连接到所述顶层和底层（14,15）的相应短端的多根细导线。在基板集成波导（10）的操作期间，每个表面单元在壁（12,13）中的大量电线有效地防止了通过壁（12,13）的大量的电力泄漏。

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