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    REMOTE RADIO HEAD AND ASSOCIATED METHOD
    11.
    发明公开
    REMOTE RADIO HEAD AND ASSOCIATED METHOD 审中-公开

    公开(公告)号：EP3165050A4

    公开(公告)日：2018-03-21

    申请号：EP14896421

    申请日：2014-07-04

    申请人： TELEFONAKTIEBOLAGET LM ERICSSON PUBL

    发明人： LEINONEN MARKO E ,  HEINIKOSKI KAUKO

    IPC分类号： H04W88/08 ,  H04B1/10

    CPC分类号： H04B1/0475 ,  H03F1/3241 ,  H03F3/24 ,  H04B1/0017 ,  H04B1/1027 ,  H04B2001/0408 ,  H04B2001/0425 ,  H04L27/2614 ,  H04W88/085

    摘要： It is provided a remote radio head configured to provide a radio interface for a network node. The remote radio head comprising an antenna, an analogue interface for connecting with the network node, radio frequency (RF) circuitry configured to convert between intermediate frequency signals of the analogue interface and RF signals of the antenna, digital circuitry configured to process transmission and/or reception signals, a first analogue to digital converter (ADC) connected to the digital circuitry, and a first digital to analogue converter (DAC) connected to the digital circuitry. The first ADC, the digital circuitry, and the first DAC are connected between the antenna and the analogue interface for receiving or transmitting radio signals. A corresponding method is also presented.

    MC-CDMA WITH LOW PEAK-TO-AVERAGE POWER RATIO MULTI-CARRIER WAVEFORM
    12.
    发明公开
    MC-CDMA WITH LOW PEAK-TO-AVERAGE POWER RATIO MULTI-CARRIER WAVEFORM 有权
    MC-CDMA具有低峰值平均功率比多载波波形

    公开(公告)号：EP3292670A1

    公开(公告)日：2018-03-14

    申请号：EP16802499.0

    申请日：2016-05-26

    申请人： Huawei Technologies Co., Ltd.

    发明人： JIA, Ming ,  MA, Jianglei

    IPC分类号： H04L27/26 ,  H04L5/00

    CPC分类号： H04B7/2628 ,  H04J11/004 ,  H04L5/0021 ,  H04L27/2601 ,  H04L27/2614 ,  H04L27/2634

    摘要： Methods, devices and systems are provided for spreading and transmitting data in a wireless communications system such that the resulting waveforms that are transmitted have low Peak to Average Power Ratio and mitigate signal collisions between different devices. The method for spreading and transmitting data includes spreading data with a sparse spreading sequence having equally spaced non-zero subcarrier elements to generate multi-carrier spread data on subcarriers corresponding to the equally spaced non-zero subcarrier elements of the spreading sequence; and transmitting the multi-carrier spread data. Different spreading sequences may be assigned to different user devices. The different spreading sequences may differ in terms of sparsity level in the frequency domain, sparsity pattern in the frequency domain and/or pulse offset in the time domain. Multiple multi-carrier spread data streams may be received by a network node and decoded using Successive Interference Cancellation (SIC) techniques.

    SYSTEM AND APPARATUS FOR POST FILTERING PEAK POWER REDUCTION IN MULTI-CARRIER COMMUNICATIONS SYSTEMS
    14.
    发明公开
    SYSTEM AND APPARATUS FOR POST FILTERING PEAK POWER REDUCTION IN MULTI-CARRIER COMMUNICATIONS SYSTEMS 审中-公开
    在多载波通信系统中用于后置滤波峰值功率降低的系统和装置

    公开(公告)号：EP3270558A1

    公开(公告)日：2018-01-17

    申请号：EP17187222.9

    申请日：2002-07-30

    申请人： INTEL Corporation

    发明人： Hunton, Matthew J.

    IPC分类号： H04L27/26 ,  H04L15/00 ,  H04L27/10 ,  H04L27/28 ,  H04L27/30 ,  H04L25/49 ,  H04B1/02 ,  H04B15/00 ,  H04B17/00

    CPC分类号： H04L27/2614

    摘要： A system and method for post filtering signal peak reduction adapted for use in a multi-carrier communication system incorporating a source of a multi-carrier communication signal band limited in plural bands corresponding to the plural carriers. A first signal path receives as an input the band limited multi-carrier communication signal. A second parallel signal path includes a peak reduction calculation circuit for calculating a peak reduction correction signal and a plurality of filters providing a plurality of parallel filtering operations on the peak reduction correction signal corresponding to the plural bands to which the communication system is limited. The filtered peak reduction correction signals and delayed input signal are combined to provide peak adjusted output signals without violating the band limits of the communication signal or the modulation scheme of the communication signal.

    摘要翻译： 一种用于后置滤波信号峰值降低的系统和方法，适用于多载波通信系统中，该多载波通信系统包括限制在与多个载波对应的多个频带中的多载波通信信号频带的源。 第一信号路径接收频带受限的多载波通信信号作为输入。 第二并行信号路径包括用于计算峰值降低校正信号的峰值降低计算电路和对与通信系统受限的多个频带对应的峰值降低校正信号提供多个并行滤波操作的多个滤波器。 滤波的峰值降低校正信号和延迟的输入信号被组合以提供峰值调整的输出信号而不违反通信信号的频带限制或通信信号的调制方案。

    POWER EFFICIENCY BY COMBINING GMSK AND SC-FDMA FOR UPLINK TRANSMISSIONS IN A CELLULAR INTERNET-OF-THINGS SYSTEM
    16.
    发明公开
    POWER EFFICIENCY BY COMBINING GMSK AND SC-FDMA FOR UPLINK TRANSMISSIONS IN A CELLULAR INTERNET-OF-THINGS SYSTEM 审中-公开
    通过组合GMSK和SC-FDMA用于蜂窝式因特网系统中的上行链路传输的功率效率

    公开(公告)号：EP3205061A1

    公开(公告)日：2017-08-16

    申请号：EP15775320.3

    申请日：2015-09-21

    申请人： Qualcomm Incorporated

    发明人： LI, Junyi ,  LANE, Frank, Anton

    IPC分类号： H04L27/26 ,  H04L5/00

    CPC分类号： H04W72/0453 ,  H04J11/00 ,  H04J2011/0009 ,  H04L5/0044 ,  H04L5/0058 ,  H04L27/2614 ,  H04L27/2636 ,  H04W4/70 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/25

    摘要： Methods, systems, and devices are described for wireless communication at a UE. A user equipment (UE) may utilize orthogonal frequency division multiple access (OFDMA) for demodulating downlink messages and a combination of Gaussian minimum shift keying (GMSK) and single carrier frequency division multiple access (SC-FDMA) for uplink modulation. The uplink modulation process may include generating a symbol vector with an M-point discrete Fourier transform (DFT), filtering the symbol vector with a frequency domain Gaussian filter, generating a sample vector from the filtered symbol vector utilizing an inverse DFT, and modulating the sample vector utilizing GMSK. In some cases, the uplink modulation may be based on a narrowband resource allocation received from a base station.

    摘要翻译： 描述了用于UE处的无线通信的方法，系统和设备。 用户设备（UE）可以利用正交频分多址（OFDMA）来解调下行链路消息以及用于上行链路调制的高斯最小频移键控（GMSK）和单载波频分多址（SC-FDMA）的组合。 上行链路调制过程可以包括：利用M点离散傅立叶变换（DFT）产生符号向量;利用频域高斯滤波器对符号向量进行滤波;利用逆DFT从滤波后的符号向量产生采样向量;以及将 采用GMSK的样本向量。 在一些情况下，上行链路调制可以基于从基站接收的窄带资源分配。

    SYSTEM AND METHOD FOR CONTROLLING COMBINED RADIO SIGNALS
    17.
    发明公开
    SYSTEM AND METHOD FOR CONTROLLING COMBINED RADIO SIGNALS 审中-公开
    SYSTEM UND VERFAHREN ZUR STEUERUNG KOMBINIERTER FUNKSIGNALE

    公开(公告)号：EP2457354A4

    公开(公告)日：2017-07-05

    申请号：EP10853381

    申请日：2010-06-28

    申请人： PLUSN LLC

    发明人： TERRY JOHN DAVID

    IPC分类号： H04L27/26 ,  H04J11/00 ,  H04L5/00

    CPC分类号： H04L27/2615 ,  H04L5/0007 ,  H04L27/2614 ,  H04L27/2626 ,  H04L27/265

    摘要： A method for controlling a combined waveform, representing a combination of at least two signals having orthogonal frequency multiplexed signal components, comprising: receiving information defining the at least two signals; transforming the information defining each signal to a representation having orthogonal frequency multiplexed signal components, such that at least one signal has at least two alternate representations of the same information, and combining the transformed information using the at least two alternate representations, in at least two different ways, to define respectively different combinations; analyzing the respectively different combinations with respect to at least one criterion; and outputting a respective combined waveform or information defining the waveform, representing a selected combination of the transformed information from each of the at least two signals selected based on the analysis.

    摘要翻译： 一种用于控制组合波形的方法，所述组合波形表示具有正交频率复用信号分量的至少两个信号的组合，所述方法包括：接收定义所述至少两个信号的信息; 将定义每个信号的信息变换为具有正交频率复用信号分量的表示，使得至少一个信号具有相同信息的至少两个替代表示，并且使用至少两个替代表示将变换信息组合在至少两个 不同的方式来分别定义不同的组合; 分析关于至少一个标准的各个不同的组合; 以及输出定义所述波形的相应组合波形或信息，表示基于所述分析选择的所述至少两个信号中的每一个信号的所述变换信息的选定组合。

    COMMUNICATION METHOD AND APPARATUS USING CODEBOOK IN MIMO SYSTEM
    18.
    发明公开
    COMMUNICATION METHOD AND APPARATUS USING CODEBOOK IN MIMO SYSTEM 审中-公开
    在EINEM MIMO系统中使用MIT-EINEM代码

    公开(公告)号：EP2443764A4

    公开(公告)日：2017-04-26

    申请号：EP10789770

    申请日：2010-06-21

    申请人： SAMSUNG ELECTRONICS CO LTD

    发明人： YEON MYUNG HOON ,  CHO JOON YOUNG ,  LEE JU HO

    IPC分类号： H04B7/04

    CPC分类号： H04B7/0465 ,  H04B7/0447 ,  H04B7/0617 ,  H04B7/0619 ,  H04L5/0023 ,  H04L27/2614

    摘要： A method and apparatus for transmitting and receiving signals using a codebook which maps each codeword to at least two different antennas is provided for a MIMO system. A transmission method includes mapping multiple codewords to multiple layers; mapping the multiple layers to multiple antennas using a precoding matrix selected from a rank-3 codebook which is designed to map the codewords to different antennas; and transmitting the codewords through paths formed by mapping the layers and the antennas. The precoding matrix of the rank-3 codebook is designed to equalize transmit power ratios between the antennas. The communication method and apparatus is advantageous to solve the problem of transmit power imbalance among the layers and the problem of performance degradation at the high SNR region in the conventional system using the rank-3 precoding matrices.

    摘要翻译： 提供了一种用于使用将每个码字映射到至少两个不同天线的码本来发送和接收信号的方法和设备，用于MIMO系统。 传输方法包括将多个码字映射到多个层; 使用从设计为将码字映射到不同天线的秩-3码本中选择的预编码矩阵将多个层映射到多个天线; 并通过映射层和天线形成的路径发送码字。 秩3码本的预编码矩阵被设计为均衡天线之间的发射功率比。 该通信方法和装置有利于解决传统的使用秩3预编码矩阵的系统中各层之间的发送功率不平衡以及高SNR区域性能下降的问题。