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1. 发明授权

US10003443B2 Methods and apparatus for transmitting modulation signals 有权
公开(公告)号：US10003443B2
公开(公告)日：2018-06-19
申请号：US15467260
申请日：2017-03-23
申请人： Wi-Fi One, LLC
发明人： Yutaka Murakami , Masayuki Orihashi , Akihiko Matsuoka
IPC分类号： H03D1/24 , H04L5/00 , H04L1/06 , H04L27/04 , H04L27/12 , H04L27/14 , H04L27/06 , H04L29/06 , H04L27/18 , H04W52/52 , H04B7/0413 , H04B7/06 , H04B7/08 , H04L25/02 , H04L27/26 , H04W72/04
CPC分类号： H04L5/0048 , H04B7/0413 , H04B7/06 , H04B7/0626 , H04B7/0632 , H04B7/0671 , H04B7/0689 , H04B7/0697 , H04B7/082 , H04L1/0618 , H04L5/0023 , H04L5/003 , H04L25/0204 , H04L25/0206 , H04L27/04 , H04L27/06 , H04L27/12 , H04L27/14 , H04L27/18 , H04L27/2601 , H04L27/2602 , H04L27/2627 , H04L27/2649 , H04L27/2657 , H04L27/2659 , H04L27/2691 , H04L27/2695 , H04L69/22 , H04W52/52 , H04W72/0453
摘要： A plurality of modulation signals is generated. Each of the plurality of modulation signals includes a pilot symbol sequence having a plurality of pilot symbols. Each pilot symbol sequence is inserted at a same temporal point in each modulation signal, and each pilot symbol in the pilot symbol sequence has a non-zero amplitude. A quantity of the plurality of pilot symbols in each pilot symbol sequence is greater than or equal to a quantity of the plurality of modulation signals to be transmitted. The plurality of modulation signals are transmitted in an identical frequency band from a plurality of antennas. Each of the transmitted plurality of modulation signals includes transmission data and one of the pilot symbol sequences.

2. 发明授权

US09906249B2 Method and apparatus for compensating for a loss of low-frequency signal content of an input signal at a receiver input 有权
公开(公告)号：US09906249B2
公开(公告)日：2018-02-27
申请号：US14572778
申请日：2014-12-17
申请人： Mirembe A. Musisi-Nkambwe , Martin J. Bayer , Jeffrey A. Porter
发明人： Mirembe A. Musisi-Nkambwe , Martin J. Bayer , Jeffrey A. Porter
IPC分类号： H03D1/24 , H04B1/16 , H04L12/26 , H04L25/10
CPC分类号： H04B1/16 , H04L25/10 , H04L43/16
摘要： A compensation circuit is configured to compensate for a loss of low-frequency signal content of an input signal at a receiver input. The compensation circuit includes a switching circuit and a summing circuit coupled to the switching circuit. The switching circuit is configured to receive a first plurality of digitized values sampled from a receiver output signal. The summing circuit is configured to generate a summation signal based on a combination of a first plurality of input values selected by the switching circuit. The selecting is based on the first plurality of digitized values. The compensation circuit is configured to provide to the receiver input a compensation signal to compensate for the loss of the low-frequency signal content from the input signal. The compensation signal is based on the summation signal and is a function of at least one gain value.

3. 发明授权

US09276687B1 Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals 有权
标题翻译：用于发送广播信号的装置，用于接收广播信号的装置，用于发送广播信号的方法和用于接收广播信号的方法
公开(公告)号：US09276687B1
公开(公告)日：2016-03-01
申请号：US14551800
申请日：2014-11-24
申请人： LG ELECTRONICS INC.
发明人： Byeongkook Jeong , Woosuk Ko , Youngjin Hong , Sungryong Hong , Jaeho Hwang
IPC分类号： H04L27/00 , H04L27/36 , H03K9/02 , H03D1/24 , H04H20/71 , H04L27/26 , H04B7/06 , H04B7/04
CPC分类号： H04L27/3444 , H03M13/1102 , H03M13/1165 , H03M13/152 , H03M13/253 , H03M13/255 , H03M13/2707 , H03M13/2778 , H03M13/2792 , H03M13/2906 , H04B7/0413 , H04B7/0615 , H04H20/71 , H04L1/00 , H04L1/0041 , H04L1/0045 , H04L1/0057 , H04L1/0058 , H04L1/0071 , H04L1/0075 , H04L5/0023 , H04L27/0008 , H04L27/26 , H04L27/2602 , H04L27/2627 , H04L27/2697 , H04L27/3416 , H04L27/361 , H04L27/38 , H04L2001/0093
摘要： The present invention provides a method of transmitting broadcast signals. The method includes, processing input streams into plural PLPs; encoding data of the each PLPs according to code rates, wherein the encoding data of the each PLPs further includes, encoding data of at least one PLP with LDPC codes, bit interleaving the LDPC encoded data of the PLP, mapping the bit interleaved data onto a set of constellations according to the code rate, MIMO encoding the mapped data, and time interleaving the MIMO encoded data; building at least one signal frame by mapping the encoded data of the each PLPs; and modulating data in the built signal frame by OFDM method and transmitting the broadcast signals having the modulated data, wherein the bit interelaved data of each PLPs are mapped by using either QAM, NUQ, or NUC.
摘要翻译：本发明提供一种发送广播信号的方法。该方法包括：将输入流处理成多个PLP; 根据码率编码每个PLP的数据，其中每个PLP的编码数据还包括：用LDPC码编码至少一个PLP的数据，对PLP的LDPC编码数据进行比特交织，将比特交织的数据映射到根据码率，MIMO编码映射数据和对MIMO编码数据进行时间交织的星座集; 通过映射每个PLP的编码数据构建至少一个信号帧; 以及通过OFDM方法调制内置信号帧中的数据，并发送具有调制数据的广播信号，其中通过使用QAM，NUQ或NUC映射每个PLP的位互连数据。

4. 发明授权

US09252712B2 Hardware-efficient signal-component separator for outphasing power amplifiers 有权
标题翻译：用于外接功率放大器的硬件高效信号分量分离器
公开(公告)号：US09252712B2
公开(公告)日：2016-02-02
申请号：US14400061
申请日：2013-05-10
申请人： Yan Li , Zhipeng Li , Yehuda Avniel , Alexandre Megretski , Vladimir Marko Stojanovic
发明人： Yan Li , Zhipeng Li , Yehuda Avniel , Alexandre Megretski , Vladimir Marko Stojanovic
IPC分类号： H03D1/24 , H03F1/02 , G06F17/50 , H03F3/19 , H03F3/24 , H04L25/03 , H04L27/06
CPC分类号： H03F1/0205 , G06F17/5068 , H03F1/0294 , H03F3/19 , H03F3/245 , H03F2200/336 , H03F2200/451 , H04L25/03 , H04L27/06
摘要： Described herein is a fixed-point piece-wise linear (FP PWL) approximation technique for computations of nonlinear functions. The technique results in circuit designs having relatively few and simple arithmetic operations, short arithmetic operands and small-sized look-up tables and the circuits resultant there from can be efficiently pipelined to run at multi-GSamples/s throughputs. In one exemplary embodiment, the FP PWL approximation technique was used in the design of an energy-efficient high-throughput and high-precision signal component separator (SCS) for use with in an asymmetric-multilevel-outphasing (AMO) power amplifier. The FP PWL approximation technique is appropriate for use in any application requiring high-throughput, area and power constrained hardware implementations of nonlinear functions.
摘要翻译：这里描述的是用于计算非线性函数的定点分段线性（FP PWL）近似技术。该技术导致电路设计具有相对较少和简单的算术运算，短的算术运算和小型查找表，并且由此产生的电路可以被有效地流水线运行，以多GSamples / s的吞吐量运行。在一个示例性实施例中，FP PWL近似技术被用于设计用于非对称多电平外相（AMO）功率放大器中的能量高通量和高精度信号分量分离器（SCS）。 FP PWL近似技术适用于需要高通量，面积和功率约束的非线性功能硬件实现的任何应用。

5. 发明授权

US09112762B2 Digital mobile passive leak detection for broadband communication system 有权
标题翻译：数字移动被动泄漏检测用于宽带通信系统
公开(公告)号：US09112762B2
公开(公告)日：2015-08-18
申请号：US13789874
申请日：2013-03-08
申请人： ComSonics, Inc.
发明人： John J. Murphy
IPC分类号： H03D1/24 , H04L27/38
CPC分类号： H04L27/38 , H04L27/3818
摘要： Passive detection of a quadrature amplitude modulated (QAM) signal amid noise is achieved by detection of a spectral component of a detected signal that corresponds to a known QAM symbol rate in, for example, a QAM modulated broadband communication system (BCS). Improved authentication can be provided by simultaneously detecting symbol rate components in two or more QAM bands. No modification of a broadband communication system such as by including a marker signal is required and thus there is no requirement for dedication of a portion of the broadband communication system spectrum or problem of marker signal interference with BCS signals.
摘要翻译：通过检测对应于例如QAM调制宽带通信系统（BCS）中的已知QAM符号率的检测信号的频谱分量来实现噪声中的正交调幅（QAM）信号的被动检测。可以通过同时检测两个或更多QAM频带中的符号速率分量来提供改进的认证。不需要通过包括标记信号来修改宽带通信系统，因此不需要对宽带通信系统频谱的一部分或BCS信号进行标记信号干扰的问题。

6. 发明授权

US09036738B2 Receiving device and receiving method 有权
标题翻译：接收设备和接收方式
公开(公告)号：US09036738B2
公开(公告)日：2015-05-19
申请号：US14226468
申请日：2014-03-26
申请人： FUJITSU LIMITED
发明人： Shunji Miyazaki
IPC分类号： H03D1/24 , H04L25/06 , H04L1/00
CPC分类号： H04L25/067 , H04L1/0055
摘要： A receiving device including: a demodulation circuit configured to generate first likelihood data of reception symbols based on a transmission format of the reception symbols, the transmission format being selected from transmission formats and including a modulation scheme applied to the reception symbols, the modulation scheme being one of amplitude modulation schemes, a processor configured to estimate a scale ratio of an implementation scale to a theoretical scale, the implementation scale being a scale of the first likelihood data, the theoretical scale being a scale of second likelihood data of the reception symbols, the second likelihood data being defined by a theory and not depending on an implementation of the receiving device, and to generate the second likelihood data based on the first likelihood data and the scale ratio, and a decoding circuit configured to decode the second likelihood data based on the transmission format.
摘要翻译：一种接收装置，包括：解调电路，被配置为基于所述接收符号的传输格式生成接收符号的第一似然数据，所述传输格式选自传输格式，并且包括应用于所述接收符号的调制方案，所述调制方案为幅度调制方案之一，被配置为将实现规模的比例估计为理论尺度的处理器，所述实现规模是所述第一似然数据的比例，所述理论量表是所述接收符号的第二似然数据的比例，第二似然数据由理论定义而不依赖于接收设备的实现，并且基于第一似然数据和比例比率生成第二似然数据，以及解码电路，被配置为基于第二似然数据来解码第二似然数据传输格式。

7. 发明授权

US08355471B2 Joint demodulation and interference suppression using serial localization with indecision 有权
公开(公告)号：US08355471B2
公开(公告)日：2013-01-15
申请号：US12549157
申请日：2009-08-27
申请人： Ali S. Khayrallah
发明人： Ali S. Khayrallah
IPC分类号： H03D1/04 , H03D1/00 , H03D1/24 , H04L27/06
CPC分类号： H04B1/1081 , H04J11/0046 , H04L25/03229 , H04L25/0328 , H04L25/03299 , H04L25/03305 , H04L27/3416 , H04L27/38 , H04L2025/03388 , H04L2025/0342 , H04L2025/03426
摘要： A receiver includes a constellation processing module and a multi-stage demodulator having a plurality of non-final demodulation stages and a final demodulation stage. The constellation processing module derives a set of centroid-based values from subsets of constellation points associated with a plurality of transmitted signals for input to each of the non-final demodulation stages. Each of the non-final demodulation stages demodulates a group of signals input to the non-final demodulation stage using the set of centroid-based values as constellation points and suppresses residual interference associated with using the set of centroid-based values as constellation points for signal demodulation. The final demodulation stage demodulates a group of modified signals input to the final demodulation stage using the subset of constellation points input to the final demodulation stage to determine a final symbol decision for the plurality of transmitted signals.

8. 发明申请

US20120294337A1 SELF-CORRELATION RECEIVER AND TRANSCEIVER INCLUDING THE SAME 有权
标题翻译：自相关接收器和收发器，包括它们
公开(公告)号：US20120294337A1
公开(公告)日：2012-11-22
申请号：US13220161
申请日：2011-08-29
申请人： Eun-Hee Kim , Jin-Ho Ko
发明人： Eun-Hee Kim , Jin-Ho Ko
IPC分类号： H04L27/06 , H03D1/24 , H04B1/38 , H04L25/06
CPC分类号： H04B1/525
摘要： Disclosed is a self-correlation receiver of a transceiver in which a transmitter shares an antenna with a receiver. The self-correlation receiver includes: a clamper which receives a received signal, limits the magnitude of the received signal within a predetermined range and outputs a clamping signal; and a mixer which receives the received signal and the clamping signal and outputs a signal having a difference frequency between the received signal and the clamping signal.
摘要翻译：公开了一种收发机的自相关接收机，其中发射机与接收机共享天线。自相关接收机包括：接收接收信号的钳位器，将接收信号的幅度限制在预定范围内并输出钳位信号; 以及混合器，其接收接收信号和钳位信号，并输出在接收信号和钳位信号之间具有差频率的信号。

9. 发明申请

US20120183100A1 Detector Circuit, Transponder and Method for Detecting Signal Amplitudes 有权
标题翻译：检测器电路，应答器和检测信号幅度的方法
公开(公告)号：US20120183100A1
公开(公告)日：2012-07-19
申请号：US13006520
申请日：2011-01-14
申请人： Raimondo Luzzi , Marco Bucci
发明人： Raimondo Luzzi , Marco Bucci
IPC分类号： H04L27/06 , H03K9/00 , H03D1/24
CPC分类号： H03K9/02 , H04L27/06
摘要： A transponder circuit for receiving and processing an ASK signal having modulated communication information is provided. The transponder circuit includes a data receiver configured to receive the ASK signal. A reference clock extractor coupled to the data receiver is configured to extract a reference clock signal from the ASK signal. An amplitude determination unit is coupled to the data receiver and the reference clock extractor, and is configured to determine at least one amplitude value of the received ASK signal in at least one clock cycle of the extracted reference clock signal based on the extracted reference block. A processing unit, which is coupled to the amplitude determination unit, processes the amplitude value such that the communication information is retrieved.
摘要翻译：提供了一种用于接收和处理具有调制通信信息的ASK信号的转发器电路。应答器电路包括被配置为接收ASK信号的数据接收器。耦合到数据接收器的参考时钟提取器被配置为从ASK信号提取参考时钟信号。幅度确定单元耦合到数据接收器和参考时钟提取器，并且被配置为基于所提取的参考块在提取的参考时钟信号的至少一个时钟周期中确定接收到的ASK信号的至少一个振幅值。耦合到幅度确定单元的处理单元处理振幅值，使得检索通信信息。

10. 发明申请

US20120155574A1 RECEIVER AND METHOD FOR PROCESSING RADIO SIGNALS USING SOFT PILOT SYMBOLS 有权
标题翻译：使用软件引导符号处理无线电信号的接收器和方法
公开(公告)号：US20120155574A1
公开(公告)日：2012-06-21
申请号：US13403369
申请日：2012-02-23
申请人： Douglas Cairns , Elias Jonsson
发明人： Douglas Cairns , Elias Jonsson
IPC分类号： H04L27/06 , H03D1/24
CPC分类号： H04L25/0236 , H04B2201/70701 , H04B2201/709727 , H04L1/0017 , H04L1/0041 , H04L1/0068 , H04L25/021 , H04L25/0226 , H04L25/03044 , H04L25/03324 , H04L25/061 , H04L27/0012 , H04L27/227 , H04L27/3455 , H04L27/3818 , H04L2001/0098 , H04L2025/03401 , H04L2025/0342 , H04L2025/03426 , H04L2025/03509 , H04L2025/03796 , H04L2027/0061 , H04L2027/0093
摘要： A receiver and method for receiving and processing a sequence of transmitted symbols in a digital communication system utilizing soft pilot symbols. A set of soft pilot symbols are transmitted with higher reliability than the remaining symbols in the sequence by modulating the soft pilot symbols with a lower order modulation such as BPSK or QPSK while modulating the remaining symbols with a higher order modulation such as 16 QAM or 64 QAM. The receiver knows the modulation type and location (time/frequency/code) of the soft pilot symbols, and demodulates them first. The receiver uses the demodulated soft pilot symbols as known symbols to estimate parameters of the received radio signal. Unlike traditional fixed pilots, the soft pilots still carry some data. Additionally, the soft pilots are particularly helpful in establishing the amplitude reference essential in demodulating the higher order modulation symbols.
摘要翻译：一种用于在利用软导频符号的数字通信系统中接收和处理发送符号序列的接收机和方法。通过用诸如BPSK或QPSK之类的较低阶调制来调制软导频符号，同时以诸如16QAM或64等更高阶调制调制剩余符号，发送一组软导频符号比该序列中的剩余符号更高的可靠性。 QAM。接收机知道软导频符号的调制类型和位置（时间/频率/码），并首先解调它们。接收机使用解调的软导频符号作为已知符号来估计所接收的无线电信号的参数。与传统的固定飞行员不同，软飞行员仍然携带一些数据。此外，软导频器在建立解调高阶调制符号时必不可少的幅度参考是特别有用的。

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