公开(公告)号：US09137082B1

公开(公告)日：2015-09-15

申请号：US14192729

申请日：2014-02-27

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS ,  KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY

发明人： Anum Ali ,  Damilola Sadiq Owodunni ,  Oualid Hammi ,  Tareq Yousef Al-Naffouri

IPC分类号： H03H7/30 ,  H04L27/26 ,  H04L1/00 ,  H04L25/03

CPC分类号： H04L27/2646 ,  H03F1/3241 ,  H03F3/245 ,  H04L25/03114 ,  H04L27/366 ,  H04L2025/03414

摘要： The system and method for joint compensation of power amplifier's distortion provides a linearization scheme for transmitter power amplifiers driven by orthogonal frequency division multiplexing signals. A pre-compensated over-driven amplifier is employed at the transmitter. The over-driven amplifier's distortions are considered as a sparse phenomenon and compressive sensing (CS) algorithms are employed at the receiver to estimate and compensate for these distortions. A bandwidth efficient data aided scheme which does not require reserving subcarriers specifically for CS measurements is utilized.

摘要翻译： 功率放大器失真联合补偿的系统和方法为由正交频分复用信号驱动的发射机功率放大器提供线性化方案。 发射机采用预补偿过驱动放大器。 过驱动放大器的失真被认为是稀疏现象，并且接收机采用压缩感测（CS）算法来估计和补偿这些失真。 利用不需要专门为CS测量预留子载波的带宽有效的数据辅助方案。

公开(公告)号：US20150180698A1

公开(公告)日：2015-06-25

申请号：US14575795

申请日：2014-12-18

申请人： THALES

发明人： François BAPTISTE

IPC分类号： H04L27/36 ,  H04L25/03

CPC分类号： H04L27/366 ,  H04L25/03828 ,  H04L27/3405

摘要： A method for generating a set of symbols, called AGC symbols, for the automatic control of the amplitude of a signal to be transmitted, the signal comprising the set of AGC symbols and at least one first information symbol modulated with a linear modulation, comprises the following steps: recovering at least one modulated information symbol adjacent to said AGC symbols in the signal; and determining each AGC symbol of the set as a function of at least the modulated information symbol.

摘要翻译： 一种用于产生一组符号（称为AGC符号）的方法，用于自动控制要发送的信号的幅度，包括一组AGC符号的信号和至少一个用线性调制调制的第一信息符号，包括 以下步骤：恢复与所述信号中的所述AGC符号相邻的至少一个调制信息符号; 以及确定所述集合的每个AGC符号作为至少所述调制信息符号的函数。

公开(公告)号：US20150155955A1

公开(公告)日：2015-06-04

申请号：US14543856

申请日：2014-11-17

申请人： Realtek Semiconductor Corp.

发明人： Yuan-Shuo Chang ,  Ching-Chia Cheng

IPC分类号： H04B17/00 ,  H04L25/03 ,  H04L27/36

CPC分类号： H04B17/10 ,  H04B17/11 ,  H04B17/14 ,  H04L25/03261 ,  H04L27/366 ,  H04L27/38

摘要： A method for calibrating mismatches of an in-phase signal path and a quadrature signal path of a transmitter, including: additionally configuration at least one mixer calibration coefficient at a transmitting part of the transmitter; obtaining at least one mixer testing signal from the transmitting part via loopback for spectrum analysis to derive at least one mixer spectrum analysis result; adjusting the mixer calibration coefficient of the transmitting part according to the mixer spectrum analysis result; and additionally utilizing an in-phase signal path finite impulse response filter and a quadrature signal path finite impulse response filter to calibrate mismatches between a low pass filter of the in-phase signal path of the transmitting part of the transmitter and a low pass filter of the quadrature signal path of the transmitting part of the transmitter. A similar mismatch calibration operation may be applied to a receiver.

摘要翻译： 一种用于校准发射机的同相信号路径和正交信号路径的不匹配的方法，包括：另外在发射机的发射部分配置至少一个混频器校准系数; 通过环回获得来自发射部分的至少一个混频器测试信号用于频谱分析以得到至少一个混频器频谱分析结果; 根据混频器频谱分析结果调整发射部分的混频器校准系数; 并且另外利用同相信号路径有限脉冲响应滤波器和正交信号路径有限脉冲响应滤波器来校准发射机的发射部分的同相信号路径的低通滤波器与低通滤波器的低通滤波器 发射机发射部分的正交信号路径。 类似的不匹配校准操作可以应用于接收器。

公开(公告)号：US20150117395A1

公开(公告)日：2015-04-30

申请号：US14583911

申请日：2014-12-29

申请人： Cohere Technologies, Inc.

发明人： Ronny Hadani ,  Shlomo Selim Rakib

IPC分类号： H04B7/01 ,  H04L27/36 ,  H04W72/04

CPC分类号： H04B1/692 ,  H04B7/0626 ,  H04B7/10 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0212 ,  H04L25/0226 ,  H04L27/366 ,  H04W24/02

摘要： Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using OTFS pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state are presented. This 2D channel state can then be used to optimize data transmission. For wireless data channels, an even more detailed 2D model of channel state can be produced by using polarization and multiple antennas in the process. Once 2D channel states are known, the system turns imperfect data channels from a liability to an advantage by using channel imperfections to boost data transmission rates. The methods can be used to improve legacy data transmission modes in multiple types of media, and are particularly useful for producing new types of robust and high capacity wireless communications using non-legacy OTFS data transmission methods.

公开(公告)号：US09008161B1

公开(公告)日：2015-04-14

申请号：US14547142

申请日：2014-11-19

申请人： Realtek Semiconductor Corp.

发明人： Yuan-Shuo Chang ,  Ching-Chia Cheng

IPC分类号： H04B1/38 ,  H04L5/16 ,  H04B17/00

CPC分类号： H04B17/10 ,  H04B17/11 ,  H04B17/14 ,  H04L25/03261 ,  H04L27/366 ,  H04L27/38

摘要： A method for calibrating mismatches of an in-phase signal path and a quadrature signal path of a transmitter, including: additionally configuration at least one mixer calibration coefficient at a transmitting part of the transmitter; obtaining at least one mixer testing signal from the transmitting part via loopback for spectrum analysis to derive at least one mixer spectrum analysis result; adjusting the mixer calibration coefficient of the transmitting part according to the mixer spectrum analysis result; and additionally utilizing an in-phase signal path finite impulse response filter and a quadrature signal path finite impulse response filter to calibrate mismatches between a low pass filter of the in-phase signal path of the transmitting part of the transmitter and a low pass filter of the quadrature signal path of the transmitting part of the transmitter. A similar mismatch calibration operation may be applied to a receiver.

公开(公告)号：US20150078500A1

公开(公告)日：2015-03-19

申请号：US14294836

申请日：2014-06-03

申请人： Electronics and Telecommunications Research Institute

发明人： Sung Jun LEE ,  Young Kyun CHO ,  Seunghyun JANG ,  Bong Hyuk PARK ,  JAE HO JUNG ,  Kwangchun LEE

IPC分类号： H04L7/00

CPC分类号： H04L7/0016 ,  H04L27/366 ,  H04L27/02 ,  H04L27/361

摘要： Provided is a method of correcting a time misalignment between envelope and phase components in a transmitting apparatus which separates envelope and phase components of a signal, processes them, and then recombines them to transmit the recombined signal. For this, in a method of correcting a time misalignment between envelope and phase components according to an embodiment of the present invention, a time misalignment is corrected by applying a time delay to at least one of envelope and phase components in digital and analog signal processing operations, or applying a time delay to an envelope or phase component by a pre-processing operation.

摘要翻译： 提供了一种校正发送装置中的包络和相位分量之间的时间偏移的方法，该发送装置分离信号的包络和相位分量，处理它们，然后将它们复合以发送重组信号。 为此，在根据本发明的实施例的校正包络和相位分量之间的时间失准的方法中，通过对数字和模拟信号处理中的包络和相位分量中的至少一个应用时间延迟来校正时间偏移 操作或通过预处理操作对信封或相位分量施加时间延迟。

公开(公告)号：US08941213B2

公开(公告)日：2015-01-27

申请号：US13865869

申请日：2013-04-18

申请人： Renesas Electronics Corporation

发明人： Takao Kihara

IPC分类号： H01L29/00 ,  H01L49/02 ,  H01L23/522 ,  H01F17/00

CPC分类号： H04B1/40 ,  H01F17/0006 ,  H01F17/0013 ,  H01F38/14 ,  H01F2017/0073 ,  H01F2017/0086 ,  H01F2038/143 ,  H01L23/5227 ,  H01L28/10 ,  H01L2924/0002 ,  H04L25/03343 ,  H04L27/366 ,  H04L2025/03356 ,  Y10S257/924 ,  H01L2924/00

摘要： A semiconductor device includes: a spiral-shaped inductor formed to include a metal wire; and a horseshoe-shaped inductor formed to include the metal wire. The horseshoe-shaped inductor is arranged such that an opening of the horseshoe-shaped inductor is disposed opposite to the spiral-shaped inductor. Accordingly, unnecessary wave (spurious) output from a transmitting unit can be reduced as small as possible.

摘要翻译： 半导体器件包括：形成为包括金属线的螺旋形电感器; 以及形成为包括金属线的马蹄形电感器。 马蹄形电感器布置成使得马蹄形电感器的开口布置成与螺旋形电感器相对。 因此，可以尽可能地减小从发送单元输出的不必要的波（杂散）。

公开(公告)号：US20140376673A1

公开(公告)日：2014-12-25

申请号：US14469281

申请日：2014-08-26

申请人： Maxlinear, Inc.

发明人： Yangtao Wang ,  Curtis Ling ,  Tim Gallagher

IPC分类号： H04L27/38 ,  H04L27/233

CPC分类号： H04L27/3863 ,  H04L27/2334 ,  H04L27/2338 ,  H04L27/361 ,  H04L27/366

摘要： Methods and systems for I/Q mismatch calibration and compensation for wideband communication receivers may include receiving a radio frequency (RF) signal in a receiver of a communication device, down-sampling the received RF signal to generate a channel k and its image channel −k at baseband frequencies, and determining average in-phase (I) and quadrature (Q) gain and phase mismatch of the channel k and the image channel −k. A curvature of gain mismatch for the channel k and the image channel −k may be estimate utilizing a blind source separation (BSS) estimation algorithm. The average I and Q gain and phase mismatch of the channel k and the image channel −k may be removed. A residual phase tilt and a residual amplitude tilt of the channel k and the image channel −k (with removed average I and Q gain and phase mismatch) may be determined.

摘要翻译： 用于宽带通信接收机的I / Q失配校准和补偿的方法和系统可以包括在通信设备的接收机中接收射频（RF）信号，对所接收的RF信号进行下采样以产生信道k及其图像信道 - k，并确定通道k和图像通道-k的平均同相（I）和正交（Q）增益和相位失配。 可以使用盲源分离（BSS）估计算法来估计信道k和图像信道-k的增益失配曲率。 可以消除通道k和图像通道-k的平均I和Q增益和相位失配。 可以确定通道k和图像通道-k（具有去除的平均I和Q增益和相位失配）的残余相位倾斜和残余幅度倾斜。

公开(公告)号：US08885786B2

公开(公告)日：2014-11-11

申请号：US14057080

申请日：2013-10-18

申请人： MagnaCom Ltd.

发明人： Amir Eliaz

IPC分类号： H04L7/00 ,  H04L25/00 ,  H04L25/40 ,  H04L27/01 ,  H04B1/709 ,  G06F11/10 ,  H04L27/02 ,  H04L25/03 ,  H04L27/04 ,  H04L27/36 ,  H04L23/02 ,  H04L1/20 ,  H04L27/00 ,  H04B1/10 ,  H04B1/16

CPC分类号： H04L1/0041 ,  G06F11/10 ,  H04B1/0475 ,  H04B1/10 ,  H04B1/16 ,  H04B1/709 ,  H04B17/0085 ,  H04B17/15 ,  H04B17/29 ,  H04B2001/0416 ,  H04L1/0036 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0054 ,  H04L1/203 ,  H04L1/206 ,  H04L7/0058 ,  H04L7/0087 ,  H04L7/02 ,  H04L7/042 ,  H04L23/02 ,  H04L25/0236 ,  H04L25/03006 ,  H04L25/03038 ,  H04L25/03057 ,  H04L25/03178 ,  H04L25/03197 ,  H04L25/03267 ,  H04L25/0328 ,  H04L25/03305 ,  H04L25/03318 ,  H04L25/03337 ,  H04L25/03343 ,  H04L25/03834 ,  H04L25/03885 ,  H04L25/03949 ,  H04L25/08 ,  H04L27/00 ,  H04L27/01 ,  H04L27/02 ,  H04L27/04 ,  H04L27/2278 ,  H04L27/36 ,  H04L27/366 ,  H04L27/368 ,  H04L27/38 ,  H04L2025/03369

摘要： A receiver may process a received signal to generate a processed received signal. The receiver may generate, during a sequence estimation process, an estimate of a phase error of the processed received signal. The receiver may generate an estimate of a value of a transmitted symbol corresponding to the received signal based on the estimated phase error. The generation of the estimate of the phase error may comprise generation of one or more phase candidate vectors. The generation of the estimate may comprise calculation of a metric based on the one or more phase candidate vectors. The calculation of the metric may comprise phase shifting the processed received signal based on the estimated phase error resulting in a phase-corrected received signal. The calculation of the metric may comprise calculating a Euclidean distance based on the phase-corrected received signal and one or more symbol candidate vectors.

摘要翻译： 接收机可以处理接收的信号以产生经处理的接收信号。 接收机可以在序列估计过程期间产生所处理的接收信号的相位误差的估计。 接收机可以基于所估计的相位误差来生成对应于接收信号的发送符号的值的估计。 产生相位误差的估计可以包括一个或多个相位候选矢量的产生。 估计的产生可以包括基于一个或多个相位候选向量的度量的计算。 度量的计算可以包括基于导致相位校正的接收信号的估计的相位误差来相移所处理的接收信号。 度量的计算可以包括基于相位校正的接收信号和一个或多个符号候选向量来计算欧氏距离。

公开(公告)号：US20140044214A1

公开(公告)日：2014-02-13

申请号：US13568214

申请日：2012-08-07

申请人： Timo Gossmann ,  Andreas Holm

发明人： Timo Gossmann ,  Andreas Holm

IPC分类号： H04L25/49

CPC分类号： H04L27/2032 ,  H04L27/366

摘要： A transmission circuit includes a shift circuit, a second shift circuit, and a modulation circuit. The shift circuit is configured to select a shift amount according to shift parameters and to introduce the shift amount in a first direction into in phase and quadrature phase baseband signals. The second circuit is configured to selectively introduce the shift amount in a second direction into local oscillator signals. The modulation circuit is configured to modulate the shifted baseband signals onto the shifted local oscillator signals to generate a composite modulated output signal. Unwanted components of the output signal are shifted away from original or specified limits. Wanted components of the output signal are unshifted.

摘要翻译： 发送电路包括移位电路，第二移位电路和调制电路。 移位电路被配置为根据移位参数选择移位量，并将第一方向的移位量引入同相和正交相位基带信号。 第二电路被配置为选择性地将第二方向的移位量引入本地振荡器信号。 调制电路被配置为将移位的基带信号调制到移位的本地振荡器信号上以产生复合调制输出信号。 输出信号的不需要的组件偏离原始或指定的限制。 输出信号的想要的分量是未移位的。