公开(公告)号：EP3101596A1

公开(公告)日：2016-12-07

申请号：EP15170536.5

申请日：2015-06-03

申请人： NXP B.V.

发明人： van de Beek, Remco ,  Zhang, Liang ,  Feng, LiSong ,  Li, Juhui ,  Chang, Alan

IPC分类号： G06K19/077 ,  G06K19/07 ,  H03C7/00 ,  H04L27/00

CPC分类号： H04L25/06 ,  G06K19/0723 ,  H03D1/18 ,  H04L27/00 ,  H04L27/06

摘要： The present disclosure relates in general to devices, systems and methods for wireless communication, and in particular to communication using a proximity integrated circuit card (PICC). Example embodiments include a circuit (100) for a PICC, the circuit comprising an input stage (101), a decoding module (106) and a bias adjustment module (117), the bias adjustment module (117) configured to receive an output code from the decoding module and provide a bias adjustment signal to the input stage (101), the bias adjustment module (117) configured to iteratively tune the bias adjustment signal based on a measurement of the output code, with successive steps tuning the bias adjustment signal by a smaller amount until the output code is within a decoding range.

摘要翻译： 本公开一般涉及用于无线通信的设备，系统和方法，特别是涉及使用近程集成电路卡（PICC）的通信。 示例性实施例包括用于PICC的电路（100），该电路包括输入级（101），解码模块（106）和偏置调整模块（117），偏置调整模块（117）被配置为接收输出代码 从所述解码模块提供偏置调整信号到所述输入级（101），所述偏置调整模块（117）被配置为基于所述输出代码的测量对所述偏置调整信号进行迭代调谐，所述偏置调整模块 直到输出代码在解码范围内。

公开(公告)号：EP3091702A1

公开(公告)日：2016-11-09

申请号：EP15733140.6

申请日：2015-01-02

申请人： Samsung Electronics Co., Ltd.

发明人： ROH, Yi-Ju ,  KIM, Ji-Hoon ,  SON, Ju-Ho ,  SHIM, Yun-A ,  LEE, Dong-Hyun ,  JUNG, Dong-Yun ,  CHOI, Sung-Tae ,  HONG, Seung-Pyo

IPC分类号： H04L25/03

CPC分类号： H04L25/06 ,  H03D2200/0047 ,  H04B1/30 ,  H04B2001/305

摘要： The present invention relates to a method and an apparatus for direct current offset calibration of a direct conversion receiver, a Direct Current (DC) offset calibration apparatus of a direct conversion receiver includes a plurality of variable gain amplifiers for amplifying an input signal based on a gain control value, a DC offset monitoring unit for monitoring a DC offset for an output signal of the plurality of variable gain amplifiers, a plurality of variable Digital to Analog Converters (DACs) for controlling a current applied to each of the plurality of variable gain amplifiers according to a current control code, and a DC offset cancellation unit for determining a current control code set which minimizes the DC offset value per preset gain control value, and thus the DC offset can be precisely cancelled without being affected by external factors such as a signal modulation method and heat and performance degradation of the receiver can be prevented.

摘要翻译： 本发明涉及一种用于直接转换接收机的直流偏移校准的方法和装置，直接转换接收机的直流（DC）偏移校准装置包括多个可变增益放大器，用于基于 增益控制值，用于监视所述多个可变增益放大器的输出信号的DC偏移的DC偏移监视单元，用于控制施加到所述多个可变增益中的每一个的可变增益放大器的多个可变数字到模拟转换器（DAC） 根据当前控制码的放大器以及用于确定使每个预设增益控制值的DC偏移值最小化的电流控制码集的DC偏移消除单元，因此可以精确地消除DC偏移，而不受外部因素的影响，例如 可以防止信号调制方法和接收机的热和性能劣化。

公开(公告)号：EP3062447A1

公开(公告)日：2016-08-31

申请号：EP16151580.4

申请日：2016-01-15

申请人： Intel IP Corporation

发明人： ESCH, Thomas ,  BOLINTH, Edgar ,  JORDAN, Markus ,  SCHOLAND, Tobias ,  SPETH, Michael

IPC分类号： H04B1/7107 ,  H04J13/12 ,  H04J11/00 ,  H04J13/00 ,  H04L27/38 ,  H04B1/7093

CPC分类号： H04L25/06 ,  H04B1/7107 ,  H04J3/0602 ,  H04J13/004 ,  H04L27/3818

摘要： A method (200) of bias cancellation for a radio channel sequence includes: receiving (201) a radio signal, the radio signal comprising a radio channel sequence coded by a first signature, the first signature belonging to a set of orthogonal signatures; decoding (202) the radio channel sequence based on the first signature to generate a decoded radio channel sequence; decoding (203) the radio channel sequence based on a second signature, wherein the second signature is orthogonal to the signatures of the set of orthogonal signatures, to generate a bias of the radio channel sequence; and canceling (204) the bias of the radio channel sequence from the decoded radio channel sequence.

摘要翻译： 一种用于无线电信道序列的偏置消除的方法（200）包括：接收（201）无线电信号，所述无线电信号包括由第一签名编码的无线电信道序列，所述第一签名属于一组正交签名; 基于所述第一签名解码（202）所述无线电信道序列以生成解码的无线电信道序列; 基于第二签名解码（203）所述无线电信道序列，其中所述第二签名与所述正交签名集合的签名正交，以产生所述无线电信道序列的偏置; 以及从解码的无线电信道序列中取消（204）无线电信道序列的偏置。

公开(公告)号：EP3058669A1

公开(公告)日：2016-08-24

申请号：EP14783817.1

申请日：2014-10-10

申请人： Nokia Solutions and Networks Oy

发明人： CUDAK, Mark ,  THOMAS, Timothy ,  KOVARIK, Thomas

IPC分类号： H04B7/06

CPC分类号： H04B1/14 ,  H04B7/0695 ,  H04L25/06

摘要： Systems, methods, apparatuses, and computer program products for an interleaved multi-beam acquisition waveform providing concurrent beam selection, automatic gain control (AGC) and automatic frequency correction (AFC) are provided. The access point (AP) may send an acquisition waveform on multiple beams, then return and retransmit an AFC on the multiple beams thus interleaving beam switching with the acquisition and frequency correction waveforms. AGC correction can be deferred until the end, relying on the fact that the transmitter may be detected at close range using a one of the multi-beams that is attenuated.

摘要翻译： 系统，方法，装置，和计算机程序产品在交错式多波束获取波形提供并发波束选择，提供自动增益控制（AGC）和自动频率校正（AFC）。 接入点（AP）可被发送到采集波形上的多个光束，并然后返回到重新发送AFC上的多个波束THUS交织与采集和频率校正波形波束切换。 AGC修正可被推迟，直到结束，依靠发射机可以在近距离使用多波束的一个没被衰减被检测的factthat。

公开(公告)号：EP2897288A4

公开(公告)日：2016-05-11

申请号：EP13837631

申请日：2013-09-12

申请人： NEC CORP

发明人： MOTOI KEIICHI ,  HORI SHINICHI ,  SHIIKUMA KAZUMI

IPC分类号： H03F3/217 ,  H03F3/24 ,  H03F3/60 ,  H03F3/68 ,  H04B1/04

CPC分类号： H04L27/04 ,  H03F1/565 ,  H03F3/2173 ,  H03F3/2178 ,  H03F3/24 ,  H03F3/602 ,  H04B1/0475 ,  H04B2001/0408 ,  H04L25/06

摘要： A transmitter includes: a modulation circuit for modulating a baseband signal into a multi-bit digital signal containing a radio frequency band component; a plurality of switch mode amplifiers each provided corresponding to a respective bit of the multi-bit digital signal supplied from the modulation circuit; and a signal-synthesizing circuit. The signal-synthesizing circuit connects a band-restricting unit that restricts the band of the output signals of the plurality of switch mode amplifiers and a voltage-current conversion unit that converts output signals of the switch mode amplifiers from voltage into current to perform signal synthesizing.

公开(公告)号：EP2966822A4

公开(公告)日：2016-04-13

申请号：EP14886299

申请日：2014-11-24

申请人： ZHONGXING MICROELECTRONICS TECHNOLOGY CO LTD

发明人： WANG YONGTAO ,  XIE HAOLV ,  WANG ZHUOYAO

IPC分类号： H04L25/06 ,  H04B1/38

CPC分类号： H04B17/14 ,  H04B1/38 ,  H04B1/52 ,  H04B1/525 ,  H04L25/06

摘要： Disclosed is a system, method and computer storage medium for calibrating a Radio Frequency (RF) transceiver, and the system includes a compensator for a transmission path, a compensator for a reception path, an estimator, a memory and a translational mixer ( figure 2 ).

公开(公告)号：EP2753038A3

公开(公告)日：2016-01-20

申请号：EP13199880.9

申请日：2013-12-31

申请人： NXP B.V.

发明人： Ciacci, Massimo ,  Van de Beek, Remco Cornelis Herman ,  Al-Kadi, Ghiath

IPC分类号： H04L25/06 ,  H04L25/03 ,  H03H17/02 ,  H04B1/00 ,  H04L25/02 ,  H04B5/00

CPC分类号： H04B1/16 ,  H04B1/0003 ,  H04B5/0081 ,  H04L25/0266 ,  H04L25/03 ,  H04L25/06

摘要： Embodiments of a method for processing a baseband signal in a Direct Current (DC)-suppressed system, a system for processing a baseband signal in a DC-suppressed system, and a smart card are described. In one embodiment, a method for processing a baseband signal in a DC-suppressed system involves processing the baseband signal in the analog domain with a first high pass filter (HPF), converting the processed baseband signal to a digital signal, and processing the digital signal in the digital domain with a second HPF to provide a discrete-time differentiation of the baseband signal. Other embodiments are also described.

摘要翻译： 描述了用于处理直流（DC）抑制系统中的基带信号的方法，用于处理DC抑制系统中的基带信号的处理系统和智能卡的实施例。 在一个实施例中，一种用于在DC抑制系统中处理基带信号的方法包括用第一高通滤波器（HPF）处理模拟域中的基带信号，将经处理的基带信号转换为数字信号，并处理数字信号 信号在数字域中具有第二HPF，以提供基带信号的离散时间差分。 还描述了其他实施例。

公开(公告)号：EP2966822A1

公开(公告)日：2016-01-13

申请号：EP14886299.8

申请日：2014-11-24

申请人： Zhongxing Microelectronics Technology Co., Ltd.

发明人： WANG, Yongtao ,  XIE, Haolv ,  WANG, Zhuoyao

IPC分类号： H04L25/06 ,  H04B1/38

CPC分类号： H04B17/14 ,  H04B1/38 ,  H04B1/52 ,  H04B1/525 ,  H04L1/206 ,  H04L25/06

摘要： Disclosed is a system, method and computer storage medium for calibrating a Radio Frequency (RF) transceiver, and the system includes a compensator for a transmission path, a compensator for a reception path, an estimator, a memory and a translational mixer ( figure 2 ).

摘要翻译： 公开了一种用于校准射频（RF）收发器的系统，方法和计算机存储介质，并且该系统包括用于传输路径的补偿器，用于接收路径的补偿器，估计器，存储器和平移混合器（图2 ）。

公开(公告)号：EP2941852A1

公开(公告)日：2015-11-11

申请号：EP13700014.7

申请日：2013-01-03

申请人： Huawei Technologies Co., Ltd.

发明人： HU, Sha ,  WU, Gengshi ,  PRIYANTO, Basuki Endah ,  KANT, Shashi ,  CHEN, Jianjun

IPC分类号： H04L25/06 ,  H04J11/00

CPC分类号： H04L27/2655 ,  H04J11/0073 ,  H04J11/0076 ,  H04L25/0212 ,  H04L25/06

摘要： The present invention relates to a method in a direct conversion receiver for estimating and removing DC offset, said direct conversion receiver being arranged to receive radio communication signals in a wireless communication system, the method comprising the steps of: receiving and down sampling time domain signals, wherein said time domain signals comprise at least one first synchronisation signal; estimating a residual DC offset &Dgr;d based on said at least one first synchronisation signal; computing a refined DC offset estimation d̃ based on said estimated residual DC offset &Dgr;d; and applying said refined DC offset estimation d̃ on said time domain signals so as to remove DC offset from said time domain signals. Furthermore, the invention also relates to a receiver device, a computer program, and a computer program product thereof.

摘要翻译： 本发明涉及一种用于估计和去除DC偏移的直接转换接收机中的方法，所述直接转换接收机被布置为在无线通信系统中接收无线电通信信号，所述方法包括以下步骤：接收和下采样时域信号 ，其中所述时域信号包括至少一个第一同步信号; 基于所述至少一个第一同步信号估计残余DC偏移＆Dgr; d; 基于所述估计的残余DC偏移＆Dgr; d计算精确的DC偏移估计d; 以及对所述时域信号应用所述精确的DC偏移估计d，以便从所述时域信号中去除DC偏移。 此外，本发明还涉及接收机设备，计算机程序及其计算机程序产品。

公开(公告)号：EP2897288A1

公开(公告)日：2015-07-22

申请号：EP13837631.4

申请日：2013-09-12

申请人： NEC Corporation

发明人： MOTOI, Keiichi ,  HORI, Shinichi ,  SHIIKUMA, Kazumi

IPC分类号： H03F3/217 ,  H03F3/24 ,  H03F3/60 ,  H03F3/68 ,  H04B1/04

CPC分类号： H04L27/04 ,  H03F1/565 ,  H03F3/2173 ,  H03F3/2178 ,  H03F3/24 ,  H03F3/602 ,  H04B1/0475 ,  H04B2001/0408 ,  H04L25/06

摘要： A transmitter includes: a modulation circuit for modulating a baseband signal into a multi-bit digital signal containing a radio frequency band component; a plurality of switch mode amplifiers each provided corresponding to a respective bit of the multi-bit digital signal supplied from the modulation circuit; and a signal-synthesizing circuit. The signal-synthesizing circuit connects a band-restricting unit that restricts the band of the output signals of the plurality of switch mode amplifiers and a voltage-current conversion unit that converts output signals of the switch mode amplifiers from voltage into current to perform signal synthesizing.

摘要翻译： 发射机包括：调制电路，用于将基带信号调制为包含无线电频带分量的多位数字信号; 多个开关模式放大器，每个开关模式放大器对应于从调制电路提供的多位数字信号的相应位; 和一个信号合成电路。 信号合成电路连接限制多个开关模式放大器的输出信号的频带的频带限制单元和将开关模式放大器的输出信号从电压转换为电流以执行信号合成的电压 - 电流转换单元 。