公开(公告)号：WO2015053306A1

公开(公告)日：2015-04-16

申请号：PCT/JP2014/076924

申请日：2014-10-08

Applicant: 株式会社NTTドコモ

Inventor： 沈　紀▲ユン▼ ,  須山　聡 ,  奥村　幸彦

IPC: H04L27/00 ,  H04B1/40 ,  H04J99/00 ,  H04W16/32 ,  H04W56/00

CPC classification number: H04L27/0014 ,  H04L2027/0055 ,  H04L2027/0065 ,  H04L2027/0083 ,  H04W16/32

Abstract: 　ユーザ端末が周波数の異なる複数の無線通信システムと同時に通信する環境において、ユーザ端末の回路規模の増大を抑制しつつ、各無線通信システムとの周波数同期を実現すること。本発明の無線基地局は、広域セル内に狭域セルが設けられる無線通信システムにおいて、前記狭域セルを形成してユーザ端末と通信する無線基地局であって、前記広域セルを形成する無線基地局から送信された広域無線信号に基づいて、前記狭域セルの搬送波周波数を生成する搬送波周波数シンセサイザと、前記広域無線信号に基づいて、前記狭域セルのベースバンド信号のサンプリング周波数を生成するサンプリング周波数シンセサイザと、を有する。

Abstract translation: 为了在用户终端同时与使用不同频率的多个无线通信系统通信的环境中进行与各个所述无线通信系统的频率同步的用户终端的电路尺寸的最小增加的可能性， 。 该无线基站服务于小区域小区，并且与在广域小区内提供所述小区域小区的无线通信系统中的用户终端进行通信具有以下特征：载波频率合成器，其生成 根据服务于上述广域小区的无线基站发送的广域无线信号，小区域小区的载波频率; 以及采样频率合成器，其基于上述广域无线信号生成小区域小区的基带信号的采样频率。

公开(公告)号：WO2010120135A2

公开(公告)日：2010-10-21

申请号：PCT/KR2010/002354

申请日：2010-04-15

Applicant: 엘지전자 주식회사 ,  육영수 ,  이은종 ,  김용호 ,  류기선 ,  정인욱

Inventor： 육영수 ,  이은종 ,  김용호 ,  류기선 ,  정인욱

IPC: H04L27/26

CPC classification number: H04L5/0007 ,  H04L5/0094 ,  H04L27/2634 ,  H04L27/2657 ,  H04L2027/0026 ,  H04L2027/0083

Abstract: 본 발명은 멀티캐리어를 지원하는 무선 접속 시스템에서 시스템 정보를 송수신하는 방법 및 장치에 관한 것이다. 본 발명의 제 1 실시예로서 무선 접속 시스템에서 중심 주파수를 조정하는 방법은, 기지국으로부터 캐리어 그룹의 구성을 지시하는 제 1 파라미터 및 중심 주파수의 조정 여부를 나타내는 제 2 파라미터를 포함하는 제어 메시지를 수신하는 단계와 제 1 파라미터를 이용하여 이동단말에 할당된 캐리어의 중심 주파수를 도출하는 단계와 제 2 파라미터를 이용하여 중심 주파수를 조정하는 단계를 포함할 수 있다.

Abstract translation: 本发明涉及一种支持用于发送和接收系统信息的多载波无线接入系统的方法和装置。 本发明的第一实施例是一种用于控制无线接入系统中的中心频率的方法，包括以下步骤：接收包括指示载波组的配置的第一参数的控制消息和指示中心频率 由基站控制; 通过使用第一参数导出分配给移动终端的载波的中心频率; 并使用第二参数控制中心频率。

公开(公告)号：WO2009038450A3

公开(公告)日：2009-06-04

申请号：PCT/MY2008000104

申请日：2008-09-19

Applicant: MIMOS BERHAD ,  ABDEL-SAMAD AYMAN AHMED MAHMOU ,  SOUROUR ESSAM ABDEL-FATTAH SOU

Inventor： ABDEL-SAMAD AYMAN AHMED MAHMOUD ,  SOUROUR ESSAM ABDEL-FATTAH SOUROUR

IPC: H04B7/26

CPC classification number: H04L27/0014 ,  H04L2027/0083

Abstract: There is disclosed a method and apparatus adapted for the detection of a narrow band signal immersed in a wide band signal. Generally, the center frequency of the narrow band signal is known to be within an ambiguity region of the signals. The ambiguity region will be partitioned into N sections. Each frame of the received composite signal (narrow band + wide band) is then frequency shifted N times digitally such that, after each shift, one of the N sections centered at zero frequency. The N frequency-shifted composite signals are filtered by the same low-pass filter (62) and the N outputs are buffered by the frame buffering means (54). With this procedure, the narrow band signal, if present, will be at one of the N filtered outputs. To detect the narrow band signal, each buffered filter output is multiplied by a delayed and conjugated version of itself. A moving average is then applied on the result of the multiplication and the maximum of the absolute value of the moving average is found. If the largest of the N maxima is larger than a threshold, the narrow band signal is detected and identified as the control channel. High SNR samples are subsequently selected for estimating the frequency offset of the narrow band signal.

Abstract translation: 公开了一种适用于检测浸入宽带信号中的窄带信号的方法和设备。 通常，已知窄带信号的中心频率在信号的模糊区域内。 歧义区域将被划分为N个部分。 接收的复合信号（窄带+宽带）的每个帧然后被数字地频移N次，使得在每次移位之后，N个部分中的一个以零频率为中心。 N个频移后的合成信号由相同的低通滤波器（62）滤波，N个输出由帧缓冲装置（54）缓冲。 通过该程序，窄带信号（如果存在）将处于N个滤波输出中的一个。 为了检测窄带信号，将每个缓冲滤波器输出乘以其本身的延迟和共轭版本。 然后将移动平均值应用于乘法结果，并找到移动平均值的绝对值的最大值。 如果N个最大值中的最大值大于阈值，则检测窄带信号并将其识别为控制信道。 随后选择高SNR样本来估计窄带信号的频率偏移。

公开(公告)号：WO2009038450A2

公开(公告)日：2009-03-26

申请号：PCT/MY2008/000104

申请日：2008-09-19

Applicant: MIMOS BERHAD ,  ABDEL-SAMAD, Ayman, Ahmed, Mahmoud ,  SOUROUR, Essam, Abdel-Fattah, Sourour

Inventor： ABDEL-SAMAD, Ayman, Ahmed, Mahmoud ,  SOUROUR, Essam, Abdel-Fattah, Sourour

IPC: H04B7/26

CPC classification number: H04L27/0014 ,  H04L2027/0083

Abstract: There is disclosed a method and apparatus adapted for the detection of a narrow band signal immersed in a wide band signal. Generally, the center frequency of the narrow band signal is known to be within an ambiguity region of the signals. The ambiguity region will be partitioned into N sections. Each frame of the received composite signal (narrow band + wide band) is then frequency shifted N times digitally such that, after each shift, one of the N sections centered at zero frequency. The N frequency-shifted composite signals are filtered by the same low-pass filter (62) and the N outputs are buffered by the frame buffering means (54). With this procedure, the narrow band signal, if present, will be at one of the N filtered outputs. To detect the narrow band signal, each buffered filter output is multiplied by a delayed and conjugated version of itself. A moving average is then applied on the result of the multiplication and the maximum of the absolute value of the moving average is found. If the largest of the N maxima is larger than a threshold, the narrow band signal is detected and identified as the control channel. High SNR samples are subsequently selected for estimating the frequency offset of the narrow band signal.

Abstract translation: 公开了适用于检测浸在宽带信号中的窄带信号的方法和装置。 通常，窄带信号的中心频率已知在信号的模糊区域内。 模糊区域将被划分为N个部分。 接收的复合信号（窄带+宽带）的每帧然后以数字方式频移N次，使得在每个移位之后，N个部分中的一个以零频率为中心。 N个频移复合信号由相同的低通滤波器（62）滤波，并且N个输出由帧缓冲装置（54）缓冲。 通过这个过程，窄带信号（如果存在）将在N个滤波输出之一处。 为了检测窄带信号，每个缓冲滤波器输出乘以本身的延迟和共轭版本。 然后将运动平均值应用于乘法的结果，并且找到移动平均线的绝对值的最大值。 如果N个最大值中的最大值大于阈值，则检测该窄带信号并将其识别为控制信道。 随后选择高SNR样本来估计窄带信号的频率偏移。

公开(公告)号：WO2003021934A2

公开(公告)日：2003-03-13

申请号：PCT/US2002/027451

申请日：2002-08-29

Applicant: BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION, INC.

Inventor： LEARNED, Rachel, E.

IPC: H04N

CPC classification number: H04L25/0224 ,  H04B1/71072 ,  H04L1/0054 ,  H04L7/042 ,  H04L25/0204 ,  H04L25/0216 ,  H04L25/03331 ,  H04L27/0014 ,  H04L2025/03611 ,  H04L2025/03796 ,  H04L2027/0016 ,  H04L2027/0061 ,  H04L2027/0065 ,  H04L2027/0067 ,  H04L2027/0083

Abstract: In a multi-user detection system in which interfering signals are purposely allowed to exist, a parameter estimation unit is provided which utilizes signal processing for determining the channel transfer function for each received signal, including the received power, phase of the oscillator, timing offset relative to the base station clock carrier frequency offset, and number of multipaths replicas and delays for each replica, with the system providing realtime uninterrupted estimates of these parameters required by the signal separation unit.

Abstract translation: 在其中有目的地允许存在干扰信号的多用户检测系统中，提供参数估计单元，其利用信号处理来确定每个接收信号的信道传递函数，包括接收功率，振荡器相位，定时偏移 相对于基站时钟载波频率偏移，以及每个副本的多路径复制和延迟的数量，其中系统提供信号分离单元所需的这些参数的实时不间断估计。

公开(公告)号：WO0176168A3

公开(公告)日：2002-03-07

申请号：PCT/US0140456

申请日：2001-04-04

Applicant: BROADCOM CORP ,  JOSHI ROBINDRA B ,  PUTNAM JEFFREY S ,  LIN THUJI S ,  YANG PAUL T

Inventor： JOSHI ROBINDRA B ,  PUTNAM JEFFREY S ,  LIN THUJI S ,  YANG PAUL T

IPC: H04L27/00 ,  H04L27/152 ,  H04L27/26

CPC classification number: H04L27/152 ,  H04L27/2602 ,  H04L27/261 ,  H04L27/2657 ,  H04L27/2675 ,  H04L2027/0028 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0069 ,  H04L2027/0083

Abstract: A method of compensating for carrier frequency and phase errors of a received multicarrier modulated signal. The received multi-carrier signal including modulated carriers for transmitting known data and unmodulated carriers for error correction, comprising, time domain down converting the received multi-carrier signal to base-band to provide a down-converted signal, the down-converted signal including a plurality of modulated carriers for transmitting known data and unmodulated carriers for error correction. Sampling an unmodulated carrier of the down-converted signal to provide received data samples. Providing a reference signal derived from the unmodulated carrier of the down-converted signal. And, estimating phase errors from a phase difference between the unmodulated carrier and the reference signal derived from the unmodulated carrier of the down-converted signal to provide a plurality of received sample phase error estimates for each modulated carrier.

Abstract translation: 一种补偿接收多载波调制信号的载波频率和相位误差的方法。 所接收的多载波信号包括用于发送用于纠错的已知数据和未调制载波的调制载波，包括时域下变频接收的多载波信号以提供下变频信号，该下变频信号包括 用于发送已知数据和用于纠错的未调制载波的多个调制载波。 对下变频信号的未调制载波进行采样，以提供接收的数据采样。 提供从下变频信号的未调制载波导出的参考信号。 并且，从未调制载波和从下变频信号的未调制载波导出的参考信号之间的相位差估计相位误差，以为每个调制载波提供多个接收的采样相位误差估计。

公开(公告)号：WO2014187231A1

公开(公告)日：2014-11-27

申请号：PCT/CN2014/076514

申请日：2014-04-29

Applicant: 小米科技有限责任公司

Inventor： 王向东 ,  吴正海 ,  郭峰

IPC: H04L25/02

CPC classification number: H04W4/027 ,  G01S11/10 ,  G01S19/52 ,  H04L27/0014 ,  H04L2027/0036 ,  H04L2027/0046 ,  H04L2027/0083 ,  H04W56/0035

Abstract: 本公开实施例提供一种信号解调方法及装置，以减小多普勒频移对通信速率的影响。在对接收到的基站发送的射频信号进行解调时，获取PMU提供的参考时钟信号后，还需要确定移动终端的移动速度，并根据移动速度确定移动终端接收基站所发射的射频信号时产生的多普勒频偏值，再根据参考时钟信号和多普勒频偏值对接收到的基站发送的射频信号进行解调。因为在对基站发送的射频信号进行解调时，考虑了多普勒频偏的影响，因此解调精度较高，从而避免了当存在多普勒频移时，通信速率过慢的问题。

公开(公告)号：WO2012119402A1

公开(公告)日：2012-09-13

申请号：PCT/CN2011/078640

申请日：2011-08-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  HAUSKE, Fabian Nikolaus ,  QI, Juan

Inventor： HAUSKE, Fabian Nikolaus ,  QI, Juan

IPC: H04L27/22

CPC classification number: H04W56/0035 ,  H04L27/227 ,  H04L27/2657 ,  H04L27/2684 ,  H04L2027/0016 ,  H04L2027/0028 ,  H04L2027/0083

Abstract: Method for phase and oscillator frequency estimation and receiver with phase and oscillator frequency estimators The invention relates to a method (100) for estimating a phase of a phase modulated signal having an inphase component and a quadrature component, the method comprising: determining (101) the inphase component of the phase modulated signal; determining (103) a quadrature component of the phase modulated signal; determining (105) a difference of absolute values of the inphase component and the quadrature component to obtain a difference component; determining (107) a sign of the inphase component to obtain an inphase sign; determining (109) a sign of the quadrature component to obtain a quadrature sign; and adjusting (111) a sign of the difference component upon the basis of the inphase sign and the quadrature sign to obtain the phase estimate.

Abstract translation: 用于相位和振荡器频率估计的方法以及具有相位和振荡器频率估计器的接收机本发明涉及一种用于估计具有同相分量和正交分量的相位调制信号的相位的方法（100），该方法包括：确定（101） 相位调制信号的同相分量; 确定（103）相位调制信号的正交分量; 确定（105）同相分量和正交分量的绝对值的差异以获得差分分量; 确定（107）同相分量的符号以获得同相符号; 确定（109）所述正交分量的符号以获得正交符号; 并根据同相符号和正交符号调整（111）差分量的符号，以获得相位估计。

公开(公告)号：WO2010120135A3

公开(公告)日：2011-03-31

申请号：PCT/KR2010002354

申请日：2010-04-15

Applicant: LG ELECTRONICS INC ,  YUK YOUNG SOO ,  LEE EUN JONG ,  KIM YONG HO ,  RYU KI SEON ,  JUNG IN UK

Inventor： YUK YOUNG SOO ,  LEE EUN JONG ,  KIM YONG HO ,  RYU KI SEON ,  JUNG IN UK

IPC: H04L27/26

CPC classification number: H04L5/0007 ,  H04L5/0094 ,  H04L27/2634 ,  H04L27/2657 ,  H04L2027/0026 ,  H04L2027/0083

Abstract: The present invention relates to a method and an apparatus that supports a multi-carrier wireless access system for transmitting and receiving system information. The 1st embodiment of the present invention is a method for controlling a center frequency in a wireless access system comprising the steps of: receiving a control message including a 1st parameter which indicates a configuration of carrier groups and a 2nd parameter which indicates whether the center frequency is controlled from a base station; deriving the center frequency of carriers allocated to a mobile terminal by using the 1st parameter; and controlling the center frequency by using the 2nd parameter.

Abstract translation: 本发明涉及支持用于发送和接收系统信息的多载波无线接入系统的方法和装置。 本发明的第一实施例是一种用于控制无线接入系统中的中心频率的方法，包括以下步骤：接收包括指示载波组的配置的第一参数的控制消息和指示中心频率 由基站控制; 通过使用第一参数导出分配给移动终端的载波的中心频率; 并使用第二参数控制中心频率。

公开(公告)号：WO2005034409A2

公开(公告)日：2005-04-14

申请号：PCT/US2004032288

申请日：2004-10-01

Applicant: MOTOROLA INC ,  GORDAY PAUL E ,  CALLAWAY EDGAR HERBERT JR ,  MARTIN FREDERICK L ,  TAUBENHEIM DAVID B

Inventor： GORDAY PAUL E ,  CALLAWAY EDGAR HERBERT JR ,  MARTIN FREDERICK L ,  TAUBENHEIM DAVID B

IPC: H04B1/18 ,  H04B7/005 ,  H04J3/06 ,  H04J11/00 ,  H04J13/00 ,  H04L20060101 ,  H04L7/04 ,  H04L27/00 ,  H04L

CPC classification number: H04L27/0014 ,  H04L7/04 ,  H04L2027/0026 ,  H04L2027/0083 ,  H04W56/0035 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

Abstract: A method (500) and system for compensation of frequency offset between a first transceiver (102) and a second transceiver (104) in wireless communication are disclosed. The compensation of the frequency offset between two or more transceivers (102, 104) is achieved using frequency synchronization bursts. These bursts contain information about the frequency offset. The frequency synchronization bursts are transmitted by the first transceiver at a range of frequencies above and below its carrier frequency (502). A second transceiver that receives at least one of these bursts (504) determines the frequency offset (504), and adjusts its frequency to match the frequency of the first transceiver (508). Thereafter, the second transceiver may enter a low power sleep mode (510) in order to reduce its power consumption. The second transceiver returns to active mode (512) just before the start of the transmission of the data packets (514).

Abstract translation: 公开了一种用于补偿无线通信中的第一收发器（102）和第二收发器（104）之间的频率偏移的方法（500）和系统。 两个或更多个收发机（102,104）之间的频率偏移的补偿是使用频率同步突发来实现的。 这些突发包含有关频率偏移的信息。 频率同步突发由第一收发器在高于和低于其载波频率的频率范围（502）处传送。 接收这些突发（504）中的至少一个的第二收发器确定频率偏移（504），并调整其频率以匹配第一收发器（508）的频率。 之后，第二收发器可以进入低功率睡眠模式（510）以便降低其功耗。 紧接在数据分组（514）的传输开始之前，第二收发器返回激活模式（512）。