公开(公告)号：EP2992633A1

公开(公告)日：2016-03-09

申请号：EP13779405.3

申请日：2013-09-20

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： WIBERG, Niclas ,  SUNDBERG, Petter ,  LEBLANC, Christien ,  IVANOV, Sergey

IPC: H04L5/00

CPC classification number: H04L5/0053 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0094 ,  H04L27/3411 ,  H04L27/345

Abstract: Method in a network node of mapping one or more messages onto transmission resource for transmitting to a wireless device. The one or more messages are processed by the network node. The network node and the wireless device are adapted to be comprised in a wireless communications network. The network node maps the one or more processed messages onto the transmission resource. This is performed according to indexing information comprised in the one or more messages, and to a precalculated mapping table. The precalculated mapping table is calculated prior to obtaining the one or more messages to be mapped. The network node, the communications network, a second network node, a core network node in the wireless communications network, and methods therein are described.

公开(公告)号：EP2954612A1

公开(公告)日：2015-12-16

申请号：EP14704101.6

申请日：2014-01-31

Applicant: Newtec Cy N.V.

Inventor： SIMOENS, Frederik

IPC: H03F1/32 ,  H04L27/36 ,  H04L27/34

CPC classification number: H04L27/367 ,  H03F1/3282 ,  H03F3/24 ,  H04B1/0475 ,  H04L27/3411

Abstract: The present application relates to a predistortion circuit (1) for countering non-linear interference affecting a digital signal during transmission over a transmission link between a mapper at a transmitter side and a demapper at a receiver side, wherein the predistortion circuit is arranged for receiving a digital symbol selected from a predefined constellation used for mapping a bit stream, and comprises: one correction stage (2) arranged for: - determining the output value (5) of a transmission link model receiving the digital symbol as input; - determining a correction term (4) as a function of said output value (5) and a target constellation symbol; and one adder arranged for adding said correction term (4) to the digital symbol and for outputting the result of said adding as an updated version of the digital symbol, wherein: the target constellation is derived from said predetermined constellation and said transmission link model, and the target constellation symbol is the symbol of the target constellation corresponding to said digital symbol.

公开(公告)号：EP2824831A3

公开(公告)日：2015-04-22

申请号：EP14169216.0

申请日：2014-05-21

Applicant: MediaTek Inc.

Inventor： Hsieh, Ming-Yu ,  Wang, Chi-Hsueh ,  Chang, Pou-Chi

IPC: H03F1/24 ,  H03F3/217 ,  H03G3/00 ,  H04J13/00 ,  H04L27/20 ,  H04L27/34

CPC classification number: H03K19/017509 ,  G01R21/06 ,  G01R23/00 ,  H03F1/02 ,  H03F1/24 ,  H03F3/2178 ,  H03F3/24 ,  H03F2203/21154 ,  H03K19/017581 ,  H03M1/12 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/045 ,  H04L7/0037 ,  H04L7/0091 ,  H04L25/028 ,  H04L25/08 ,  H04L27/2053 ,  H04L27/2067 ,  H04L27/3411 ,  H04L27/3444 ,  H04W24/02

Abstract: A transmitter system (100) includes a digital phase rotator (104), a phase rotation controller (106, 900), and a radio-frequency (RF) transmitter (112, 200, 300, 400). The digital phase rotator (104) receives a first constellation data, and applies a digital phase response to the received first constellation data to generate a second constellation data. The phase rotation controller (106, 900) configures the digital phase rotation. The digital RF transmitter (112, 200, 300, 400) receives a digital input data derived from the second constellation data, and converts the digital input data into an analog RF output.

Abstract translation: 发射机系统（100）包括数字相位旋转器（104），相位旋转控制器（106,900）和射频（RF）发射机（112,200,300,400）。 数字相位旋转器（104）接收第一星座数据，并将数字相位响应应用于所接收的第一星座数据以生成第二星座数据。 相位旋转控制器（106,900）配置数字相位旋转。 数字RF发射器（112,200,300,400）接收从第二星座数据导出的数字输入数据，并将数字输入数据转换为模拟RF输出。

公开(公告)号：EP2375668A3

公开(公告)日：2014-10-08

申请号：EP11152874.1

申请日：2009-06-30

Applicant: Telefonaktiebolaget L M Ericsson (Publ)

Inventor： Dent, Paul W.

IPC: H04L27/34 ,  H04B1/707

CPC classification number: H04L27/3411 ,  H04B2201/70706 ,  H04L27/3416

Abstract: A transmitter and a method are described herein that can generate a radio signal with a reduced ratio of peak amplitude to root-mean-square amplitude which helps to improve the transmit efficiency of the transmitter's power amplifier. In addition, a receiver is also described herein that can decode the radio signal.

公开(公告)号：EP2685690A1

公开(公告)日：2014-01-15

申请号：EP12005118.0

申请日：2012-07-11

Applicant: Telefonaktiebolaget L M Ericsson (PUBL)

Inventor： Mu, Fenghao ,  Sundström, Lars

IPC: H04L27/26 ,  H04L27/34 ,  H04L27/36 ,  H03C5/00 ,  H03F1/32

CPC classification number: H04L27/3411 ,  H03C5/00 ,  H03F1/3282 ,  H04L27/2614 ,  H04L27/361

Abstract: A technique for generating a radio frequency signal (302) based on a baseband signal (304) is provided. As to a method aspect of the technique, a baseband signal (304) is modified by adding an offset signal to the baseband signal (304). The offset signal prevents the modified baseband signal (316) from entering a first signal region. An amplitude signal (r) and a phase signal (ϕ) is provided based on the modified baseband signal (316). The phase signal (ϕ) is modulated to a carrier frequency (ω c ). The modulated phase signal (ϕ) is amplified according to the amplitude signal (r) to generate a preliminary radio frequency signal (318). An offset compensation signal (320) is derived from the offset signal (314) and fed into the preliminary radio frequency signal (318). The offset compensation signal (320) essential cancels a frequency component, which corresponds to the offset signal (314), in the radio frequency signal (302).

Abstract translation: 提供了一种基于基带信号（304）产生射频信号（302）的技术。 对于该技术的方法方面，通过向基带信号（304）添加偏移信号来修改基带信号（304）。 偏移信号防止修改的基带信号（316）进入第一信号区域。 基于修改的基带信号（316）提供幅度信号（r）和相位信号（Õ）。 相位信号（Õ）被调制到载波频率（Éc）。 调制相位信号（Õ）根据振幅信号（r）被放大，以产生初步射频信号（318）。 偏移补偿信号（320）从偏移信号（314）导出并被馈送到初步射频信号（318）。 偏移补偿信号（320）必须抵消与射频信号（302）中的偏移信号（314）对应的频率分量。

公开(公告)号：EP2540043B1

公开(公告)日：2014-01-01

申请号：EP11707728.9

申请日：2011-02-18

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： LOPEZ, Miguel ,  SUNDBERG, Mårten ,  LIBERG, Olof ,  QIU, Xun

IPC: H04L27/20 ,  H04L27/22 ,  H04L27/00 ,  H04L27/34 ,  H04L27/26

CPC classification number: H04L27/0008 ,  H04L27/0012 ,  H04L27/20 ,  H04L27/22 ,  H04L27/262 ,  H04L27/2621 ,  H04L27/3411

公开(公告)号：EP2297911B1

公开(公告)日：2013-12-25

申请号：EP09762030.6

申请日：2009-05-22

Applicant: Thomson Licensing

Inventor： ZHOU, Wei ,  ZOU, Li

IPC: H04L27/34 ,  H04L27/36 ,  H04L1/00

CPC classification number: H04L27/3411 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0044 ,  H04L1/005 ,  H04L1/0057 ,  H04L27/0008 ,  H04L27/3416 ,  H04L27/366

Abstract: A cable transmitter supports a number of low density parity check (LDPC) coding rates, e.g., 1/4, 1/3, 2/5, 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9 and 9/10; and supports a number of quadrature amplitude modulation (QAM) schemes, e.g., 4-QAM, 16-QAM, 64-QAM, 256-QAM, 1024-QAM or higher. For a selected modulation scheme, the cable transmitter selects between using a non-uniform symbol constellation or a uniform symbol constellation as a function of a selected coding rate.

公开(公告)号：EP2518965A1

公开(公告)日：2012-10-31

申请号：EP10839325.7

申请日：2010-12-17

Applicant: Fujitsu Limited ,  The University of Electro-Communications

Inventor： NAGATANI, Kazuo ,  FUKUDA, Eisuke ,  YAMAO, Yasushi

IPC: H04L27/32 ,  H03F1/06 ,  H03F3/24

CPC classification number: H03F3/24 ,  H03F1/0227 ,  H04L27/3411 ,  H04L27/361

Abstract: The discloses transmission circuit includes: a ∑-Δ modulator which performs ∑-Δ modulation of the amplitude modulation component of a modulating signal and outputs a pulse width modulation signal; an angle modulator which generates an angle-modulation component signal indicating the angle modulation component of a signal obtained by multiplying the modulating signal by a transmission output control coefficient corresponding to the transmission output of the power amplifier; and a multiplier which multiplies the pulse-width modulated signal and the angle modulation component signal and outputs the multiplication result as the output signal to the power amplifier.

Abstract translation: 所公开的发送电路包括：“调制器”，其对调制信号的调幅分量进行“调制”并输出脉宽调制信号; 角度调制器，其生成指示通过将调制信号乘以与功率放大器的发送输出相对应的发送输出控制系数而获得的信号的角度调制分量的角度调制分量信号; 以及乘法器，其将脉宽调制信号和角度调制分量信号相乘，并将乘法结果作为输出信号输出到功率放大器。

公开(公告)号：EP1915822A4

公开(公告)日：2011-10-19

申请号：EP06788973

申请日：2006-07-27

Applicant: QUALCOMM ATHEROS INC

Inventor： YONGE III LAWRENCE W

IPC: H04B3/54

CPC classification number: H04L12/43 ,  H04B3/54 ,  H04L5/0028 ,  H04L5/0042 ,  H04L5/0092 ,  H04L25/03847 ,  H04L27/0008 ,  H04L27/2053 ,  H04L27/2623 ,  H04L27/3411 ,  H04L27/3472

公开(公告)号：EP2180650A1

公开(公告)日：2010-04-28

申请号：EP08783645.8

申请日：2008-08-13

Applicant: Da Tang Mobile Communications Equipment Co., Ltd.

Inventor： DING, Yu ,  YANG, Xiaodong ,  ZHAO, Xunwei ,  REN, Shiyan

IPC: H04L27/34 ,  H04B1/02

CPC classification number: H04L27/34 ,  H04L1/0025 ,  H04L1/0079 ,  H04L27/3411

Abstract: A modulation method and device for modulating the information of transfer format combination indicator (TFCI). The method comprises: the of TFCI are de-muitiplexed averagely according to 2bits during the transmitting time interval (TTI); each portion of the TFCI information de-multiplexed averagely is extended to correspond with at least one specified power point of the preset constellation; each portion of the extend TFCI information is mapped to the corresponding power point for modulating.

Abstract translation: 一种用于调制传输格式组合指示符（TFCI）信息的调制方法和装置。 该方法包括：TFCI在传输时间间隔（TTI）期间根据2bits平均去复用; 平均将多路复用TFCI信息的每个部分平均扩展为与预设星座的至少一个指定的功率点对应; 扩展TFCI信息的每个部分被映射到相应的功率点进行调制。