公开(公告)号：EP3001629A1

公开(公告)日：2016-03-30

申请号：EP14290288.1

申请日：2014-09-25

申请人： ALCATEL LUCENT

发明人： Wild, Thorsten ,  Schaich, Frank

IPC分类号： H04L27/26

CPC分类号： H04L27/2644 ,  H04L27/2636 ,  H04L27/264

摘要： The invention relates to a method of providing a multicarrier modulated signal (mcs) which comprises at least one sub-band (sb1), wherein said sub-band (sb1) comprises a plurality of subcarriers (sc), comprising the following steps: receiving (200) an input signal vector ( s ), wherein each component of said input signal vector ( s ) is associated with one of said plurality of subcarriers, expanding (210) said input signal vector ( s ) by adding one or more additional vector elements in front of and/or after the components of said input signal vector ( s ), whereby an expanded signal vector ( s ext ) is obtained, upsampling (220) the expanded signal vector ( s ext ), whereby an upsampled signal vector ( s up ) is obtained, filtering (230) the upsampled signal vector ( s up ) to obtain a filtered sub-band output signal ( x filt ).

摘要翻译： 本发明涉及一种提供包括至少一个子带（sb1）的多载波调制信号（mcs）的方法，其中所述子带（sb1）包括多个子载波（sc），包括以下步骤：接收 （200）输入信号向量，其中所述输入信号向量的每个分量与所述多个子载波之一相关联，通过将一个或多个附加向量 在所述输入信号向量的组件之前和/或之后的元素，从而获得扩展的信号向量（s ext），对扩展的信号向量（s ext）进行上采样（220），由此上采样的信号向量 s），对上采样信号矢量（s up）进行滤波（230），以获得滤波后的子带输出信号（x filt）。

公开(公告)号：EP2239903A3

公开(公告)日：2013-05-29

申请号：EP10003295.2

申请日：2010-03-26

申请人： Mitsubishi Electric Corporation

发明人： Orlik, Philip V. ,  Du, Qinghe ,  Duan, Chunjie ,  Sahinoglu, Zafer

IPC分类号： H04L27/26 ,  H04J13/00

CPC分类号： H04L27/2631 ,  H04J13/0055 ,  H04J13/14 ,  H04L27/2613 ,  H04L27/2644 ,  H04L27/2652 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2692

摘要： In an oversampled orthogonal frequency-division multiplexing (OFDM) network, the preamble used for time synchronization does not have an ideal autocorrelation function due to guard bands, which degrade the accuracy of symbol timing. Therefore, a zero-correlation-zone (ZCZ) based preamble is used for time synchronization. A cross correlation function (CCF) used for time synchronization is forced to 0 within a certain region around a main lobe. The length of the ZCZ is guaranteed to be larger than a cyclic prefix length of OFDM data symbols synchronization accuracy.

公开(公告)号：EP1532789A1

公开(公告)日：2005-05-25

申请号：EP03793585.5

申请日：2003-07-07

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： BOLINTH, Edgar ,  LORENZ, Gesa

IPC分类号： H04L27/26 ,  H04L25/03

CPC分类号： H04L27/2602 ,  H04L5/023 ,  H04L25/03834 ,  H04L27/2644

摘要： The invention relates to a method for the transmission of data in a multi-carrier system, provided with a frequency band, the carrier frequencies of which are distributed in a sub-carrier band, dividing the frequency band. On the transmission side, dependent on current transmission properties, an adaptive pre-emphasis of the transmission signal is carried out for a part of the carrier frequencies in the sub-carrier band. Said transmitter thus comprises means for determining current transmission properties and means for adaptive pre-emphasis of a part of the carrier frequencies in the sub-carrier band of the transmission signal.

公开(公告)号：EP3188388A4

公开(公告)日：2018-04-11

申请号：EP15836217

申请日：2015-08-03

申请人： MITSUBISHI ELECTRIC CORP

发明人： HASEGAWA FUMIHIRO

IPC分类号： H04L27/26 ,  H04L25/03

CPC分类号： H04J11/00 ,  H04L25/03828 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2636 ,  H04L27/2644 ,  H04L27/2647

摘要： A transmission apparatus according to the invention includes a symbol arrangement unit to receive multiple symbols constituting a block, duplicate a first symbol of a block one block previous to the block, and output a block symbol being the block at present with the duplicated duplicate symbol inserted at a first position thereof, a frequency conversion unit to convert the block symbol into a frequency domain signal, a frequency component removal unit to remove one or more frequency components from the frequency domain signal, a time conversion unit to convert, after performing interpolation on the frequency domain signal with the one or more frequency components removed, the interpolated frequency domain signal into a time domain signal, and a cyclic prefix insertion unit to duplicate, in the time domain signal, a signal from a position on a basis of the first position through an end as a cyclic prefix, and insert the cyclic prefix at a beginning of the time domain signal; thus, in single carrier block transmission, this enables reduction of out-of-band spectra and improvement of frequency utilization efficiency.

公开(公告)号：EP3042480B1

公开(公告)日：2017-12-20

申请号：EP14777686.8

申请日：2014-09-02

申请人： Orange

发明人： LIN, Hao ,  SIOHAN, Pierre

IPC分类号： H04L27/26

CPC分类号： H04L27/2644 ,  H04L5/0044 ,  H04L27/2607 ,  H04L27/2627 ,  H04L27/264 ,  H04L27/2649

公开(公告)号：EP3188388A1

公开(公告)日：2017-07-05

申请号：EP15836217.8

申请日：2015-08-03

申请人： Mitsubishi Electric Corporation

发明人： HASEGAWA, Fumihiro

IPC分类号： H04J11/00 ,  H04L27/01

CPC分类号： H04L27/2607 ,  H04J11/00 ,  H04L25/03828 ,  H04L27/2602 ,  H04L27/2636 ,  H04L27/2644 ,  H04L27/2647

摘要： A transmission apparatus according to the invention includes a symbol arrangement unit to receive multiple symbols constituting a block, duplicate a first symbol of a block one block previous to the block, and output a block symbol being the block at present with the duplicated duplicate symbol inserted at a first position thereof, a frequency conversion unit to convert the block symbol into a frequency domain signal, a frequency component removal unit to remove one or more frequency components from the frequency domain signal, a time conversion unit to convert, after performing interpolation on the frequency domain signal with the one or more frequency components removed, the interpolated frequency domain signal into a time domain signal, and a cyclic prefix insertion unit to duplicate, in the time domain signal, a signal from a position on a basis of the first position through an end as a cyclic prefix, and insert the cyclic prefix at a beginning of the time domain signal; thus, in single carrier block transmission, this enables reduction of out-of-band spectra and improvement of frequency utilization efficiency.

摘要翻译： 根据本发明的发送装置包括符号排列单元，用于接收构成块的多个符号，复制块之前的块的第一符号，并且输出作为当前块的块符号，插入复制的复制符号 在其第一位置处，将块符号转换为频域信号的频率转换单元，从频域信号中去除一个或多个频率分量的频率分量去除单元，时间转换单元， 具有去除的一个或多个频率分量的频域信号，将内插的频域信号转换为时域信号，以及循环前缀插入单元，用于在时域信号中基于第一 作为循环前缀在末端定位，并且在时域信号的开始处插入循环前缀; 因此，在单载波块传输中，这能够减少带外频谱并提高频率利用效率。

公开(公告)号：EP2416616A1

公开(公告)日：2012-02-08

申请号：EP09842909.5

申请日：2009-03-30

申请人： Fujitsu Limited

发明人： DATEKI, Takashi ,  SEYAMA, Takashi

IPC分类号： H04W80/02 ,  H04J11/00 ,  H04L27/01

CPC分类号： H04L27/2614 ,  H04L5/0041 ,  H04L27/2636 ,  H04L27/2644

摘要： A radio communication system, includes: a transmission apparatus; and a reception apparatus, wherein the transmission apparatus and reception apparatus performs a radio communication, the transmission apparatus includes: an enlargement unit which enlarge a sequence length of a transmission data by repeating a sequence of the transmission data; first subcarrier arrangement unit which arranges each of components included in the enlarged transmission data on each of subcarriers, while maintaining a positional relationship between the each of components, and punctures the component of the transmission data arranged on the subcarrier, when the subcarrier is not used for transmission; and a transmission unit which transmits the transmission data arranged on the subcarrier to the reception apparatus, and the reception apparatus includes a reception unit which receives the transmission data.

摘要翻译： 一种无线电通信系统，包括：发送装置; 和接收装置，worin发送装置和接收装置进行无线通信，所述发送装置包括：放大部，其通过重复发送数据的序列放大的发送数据的序列长度; 第一副载波配置单元，其布置每个包括在关于每个子载波的放大传输数据分量，同时保持各部件之间的位置关系，并穿刺布置在副载波，发送数据的部件在不使用的副载波 用于传输; 以及发送单元，发送配置在副载波的接收装置中的发送数据，并且所述接收装置包括：接收单元，其接收的传输数据。

公开(公告)号：EP2297862A1

公开(公告)日：2011-03-23

申请号：EP09793845.0

申请日：2009-07-07

申请人： Mediatek Inc.

发明人： LIAO, Pei-Kai ,  FU, I-Kang

IPC分类号： H04B1/10 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04L27/2647 ,  H04L5/0007 ,  H04L5/0039 ,  H04L5/0044 ,  H04L27/261 ,  H04L27/2644

摘要： A communications apparatus is provided. A receiving module receives a signal with a predetermined signal bandwidth. A low pass filter filters the signal to obtain a filtered signal. A filter bandwidth of the low pass filter is wide enough to pass the regular sub-carrier frequency components and at least half of the guard sub-carrier frequency components of the signal. An analog to digital converter samples the filtered signal with a sampling rate exceeding a standard sampling rate defined in accordance with the predetermined signal bandwidth of the signal to obtain a plurality of digital samples. A Fast Fourier Transform module performs a fast Fourier transform on a predetermined number of points of the digital samples to obtain a plurality of transformed samples. The predetermined number exceeds a standard number defined in accordance with the predetermined carrier bandwidth. A sub-carrier collector collects the data from the transformed samples.

公开(公告)号：EP1532789B1

公开(公告)日：2006-09-20

申请号：EP03793585.5

申请日：2003-07-07

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： BOLINTH, Edgar ,  LORENZ, Gesa

IPC分类号： H04L27/26 ,  H04L25/03

CPC分类号： H04L27/2602 ,  H04L5/023 ,  H04L25/03834 ,  H04L27/2644

摘要： The invention relates to a method for the transmission of data in a multi-carrier system, provided with a frequency band, the carrier frequencies of which are distributed in a sub-carrier band, dividing the frequency band. On the transmission side, dependent on current transmission properties, an adaptive pre-emphasis of the transmission signal is carried out for a part of the carrier frequencies in the sub-carrier band. Said transmitter thus comprises means for determining current transmission properties and means for adaptive pre-emphasis of a part of the carrier frequencies in the sub-carrier band of the transmission signal.

公开(公告)号：EP1237342A3

公开(公告)日：2006-05-03

申请号：EP02251432.7

申请日：2002-02-28

申请人： ALPS ELECTRIC CO., LTD.

发明人： Otaki, Yukio, c/o Alps Electric Co Ltd

IPC分类号： H04L27/26

CPC分类号： H04L27/2626 ,  H03H17/04 ,  H03H17/045 ,  H04L27/2644

摘要： The OFDM modulation circuit system includes an IFFT unit (3) and an interpolation unit. The IFFT unit performs an IFFT operation by mapping a digital modulation signal onto a plurality of sub-carriers, and outputs the plurality of IFFT signals. The interpolation unit interpolates the N-point IFFT signals with a degree of interpolation of 2. The interpolation unit includes only the first-stage interpolator (5), or the first-stage interpolator and at least one combination of a complex multiplier cascade-connected to the first-stage interpolator and the second-stage interpolator (9). Each of the first-stage interpolator and the second-stage interpolator includes first (5 1 ) and second (5 3 ) IIR digital all-pass filters for performing 90° phase shift and first (5 2 ) and second (5 4 ) delay circuits for supplying a signal delay by an amount equal to the signal delay of the first and second IIR digital all-pass filters.