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    • 5. 发明公开
    • Method and user equipment for carrrier aggregation
    • Verfahren und Benutzereinrichtung zurTrägeraggregation
    • EP2672647A1
    • 2013-12-11
    • EP12305630.1
    • 2012-06-04
    • Sequans Communications
    • Muquet, BertrandBriceno, Mauricio
    • H04L5/00H04L27/26
    • H04L27/2647H04L5/001
    • The disclosure relates to a user equipment for receiving an OFDM signal, said user equipment comprising a plurality of carrier processing chains (4001, 4002).
      According to the disclosure, said user equipment comprises a carrier aggregation module (30), aggregating the signals received on each carrier processed by said plurality of carrier processing chains (4001, 4002), said aggregation module (30) being implemented for delivering a set of aggregated signals of said plurality of carrier processing chains at the input of a Fast Fourier Transform module (430) of a PHY layer processing subsystem (31) of said user equipment
    • 本公开涉及一种用于接收OFDM信号的用户设备,所述用户设备包括多个载波处理链(4001,4002)。 根据本公开,所述用户设备包括:载波聚合模块(30),聚合由所述多个载波处理链(4001,4002)处理的每个载波上接收到的信号,所述聚合模块(30)被实现为传送一组 在所述用户设备的PHY层处理子系统(31)的快速傅里叶变换模块(430)的输入端处的所述多个载波处理链的聚合信号中,
    • 6. 发明公开
    • Iterative channel estimation method with compensated MMSE
    • IterativesKanalschätzungsverfahrenmit kompensierter MMSE
    • EP2536082A1
    • 2012-12-19
    • EP11170157.9
    • 2011-06-16
    • Sequans Communications
    • Sezginer, SerdarLiu, Yang
    • H04L25/02
    • H04L25/022H04L25/023H04L25/0244H04L25/0256
    • The invention relates to a channel estimation treatment method, said channel estimation being used for obtaining binary data conveyed in a signal.
      According to the invention, said method comprises the following processing steps:
      - obtaining a vector of channel estimates, called a current vector, each element of the current vector corresponding to an estimate of a subchannel;
      - detecting, inside said current vector, at least one pilot symbol;
      - splitting said current vector in at least two distinct subvector, at least one first subvector comprising channel estimates related to data symbols and/or pilots symbols and at least one second subvector comprising channel estimates related to null symbols;
      - decoding of said at least one subvector, delivering at least one first treated subvector;
      - modifying said at least one second subvector by assuming a presence of pilot symbols in said at least one second subvector, delivering at least one second treated subvector;
      - calculating a new vector of channel estimates with said at least one first treated subvector and said at least one second treated subvector.
    • 本发明涉及一种信道估计处理方法,所述信道估计用于获得在信号中传送的二进制数据。 根据本发明,所述方法包括以下处理步骤: - 获得称为当前向量的信道估计向量,所述当前向量的每个元素对应于子信道的估计; - 在所述电流矢量内检测至少一个导频符号; - 在至少两个不同子向量中分割所述当前向量,至少一个第一子向量包括与数据符号和/或导频符号相关的信道估计,以及包括与空符号相关的信道估计的至少一个第二子向量; - 解码所述至少一个子向量,传送至少一个第一处理的子向量; - 通过假设在所述至少一个第二子向量中存在导频符号来修改所述至少一个第二子向量,递送至少一个第二处理的子向量; - 利用所述至少一个第一处理子向量和所述至少一个第二处理子向量计算信道估计的新向量。
    • 7. 发明公开
    • Method of exploitation of Co-channel Interference, apparatus and computer program
    • Verfahren zur Erfassung der Co-Kanal-Störung,Vorrichtung und Computerprogramm
    • EP2458803A1
    • 2012-05-30
    • EP10192864.6
    • 2010-11-29
    • Sequans Communications
    • Buda, FabienSezginer, SerdarXu, Weixiao
    • H04L25/02H04B7/02
    • H04W84/12H04B7/0413H04L25/0204H04L25/023
    • The invention relates to a method of canceling co-channel interference of a signal received by a mobile station, comprising at least two receiving antennas, in a cellular OFDMA-TDD communication network comprising one serving base station and at least one interfering base station, wherein said signal being a result of a signal transmitted by said serving base station which is distorted by at least one signal transmitted by said at least one interfering base station.
      According to the invention, the method is characterized in that said co-channel interference cancellation method comprises:
      - a channel estimation phase delivering a channel estimation of a serving signal transmitted by said serving base station and a channel estimation of an interfering signal transmitted by said at least one interfering base station,
      - a MIMO detecting phase, detecting symbols by using said channel estimation of said serving signal and said channel estimation of said interfering signal.
    • 本发明涉及一种在包括一个服务基站和至少一个干扰基站的蜂窝OFDMA-TDD通信网络中消除由移动台接收的包括至少两个接收天线的信号的同信道干扰的方法,其中 所述信号是由所述服务基站发送的由所述至少一个干扰基站发送的至少一个信号失真的信号的结果。 根据本发明,该方法的特征在于所述同信道干扰消除方法包括:信道估计阶段,传送由所述服务基站发送的服务信号的信道估计和由所述服务基站发送的干扰信号的信道估计 至少一个干扰基站,MIMO检测相位,通过使用所述服务信号的所述信道估计和所述干扰信号的信道估计来检测符号。
    • 8. 发明公开
    • Differential amplifier with common-mode feedback
    • DifferentialzverstärkermitGleichtaktrückkopplung
    • EP2312751A1
    • 2011-04-20
    • EP09172923.6
    • 2009-10-13
    • Sequans Communications
    • Li, MengxiongShafeeu, Hassan
    • H03F3/45
    • H03F3/45183H03F3/45659H03F2200/153H03F2203/45074H03F2203/45082H03F2203/45134H03F2203/45366H03F2203/45424H03F2203/45642
    • A fully differential amplifier comprises a first gain stage (11-13,15,16), a second gain stage (21,22), an active feedforward stage (23,24) and a common mode feedback stage (25,26,41-48). As shown in fig. 1 , the first gain stage (11-13,15,16) comprises a source-coupled pair of NMOS transistors (11,12) having their sources connected to a current source (13), while their drains are connected to a pair of load transistors (15,16). The amplified differential output signal is obtained across the output nodes (31,32) to which are coupled the outputs of the second gain stage (21,22) and the outputs of the active feedforward stage (23,24). As shown in fig. 3 , the common mode feedback stage comprises two differential amplifier stages (43,44 and 45,46), two diode-connected load transistors (41,42) and two feedforward transistors (31,32). Each one of the two differential amplifier stages receives a common reference voltage (Vref). The other input of each differential amplifier stage is connected to a respective output terminal (31,32) of the fully differential amplifier shown in fig. 1 . One of the diode-connected load transistors (41) is connected to the pair of load transistors (15,16) to form a current mirror, in order to control the common mode voltage at the amplifier outputs (31,32) via the load transistors (15,16) of the first gain stage. This diode-connected transistor (41) is simultaneously connected to the drains of a pair of feedforward transistors (25,26) providing a DC path between the source terminals of the active feedforward stage (23,24) and a reference potential (Vss).
    • 全差分放大器包括第一增益级(11-13,15,16),第二增益级(21,22),有效前馈级(23,24)和共模反馈级(25,26,41 -48)。 如图所示。 如图1所示,第一增益级(11-13,15,16)包括源极耦合的一对NMOS晶体管(11,12),其源极连接到电流源(13),而它们的漏极连接到一对 负载晶体管(15,16)。 在与第二增益级(21,22)的输出和有效前馈级(23,24)的输出耦合的输出节点(31,32)上获得放大的差分输出信号。 如图所示。 如图3所示,共模反馈级包括两个差分放大器级(43,44和45,46),两个二极管连接的负载晶体管(41,42)和两个前馈晶体管(31,32)。 两个差分放大器级中的每一个接收公共参考电压(Vref)。 每个差分放大器级的另一个输入端连接到图6所示的全差分放大器的相应输出端(31,32)。 1。 二极管连接的负载晶体管(41)中的一个连接到一对负载晶体管(15,16)以形成电流镜,以便通过负载来控制放大器输出(31,32)处的共模电压 第一增益级的晶体管(15,16)。 该二极管连接晶体管(41)同时连接到一对前馈晶体管(25,26)的漏极,其提供有源前馈级(23,24)的源极端子与参考电位(Vss)之间的DC路径, 。
    • 9. 发明公开
    • Method and system for radio access technology monitoring in a wireless communications system
    • 在einem drahtlosen Kommunikationssystem的Verfahren und Systemfürdie Funkzugriff-Technologieüberwachung
    • EP2107732A1
    • 2009-10-07
    • EP08103300.3
    • 2008-04-01
    • Sequans Communications
    • Bertorelle, JérômeGosné, StéphaneGosteau, JérémyMuquet, BertrandPopper, Ambroise
    • H04L12/56
    • H04W48/18H04W48/16
    • The invention relates to a method for radio access technology (RAT) monitoring, in a wireless system environment comprising a wireless communications equipment (T1 to T3) and at least two different RATs (R1, R2) that coexist for providing to said wireless communications equipment (T1 to T3) access to one or more communications networks for communications service; the wireless communications equipment (T1 to T3) comprising at least two electronic subsystem means (RS 1, RS2), each adapted for establishing and maintaining an active communications connection with a certain one of said at least two different RATs (R1, R2);
      the wireless communications equipment (T3) selecting at least one RAT (R2), among all the RATs (R1, R2) available in a certain geographical area (OA), for establishing said at least one active communications connection, according to at least one monitored characteristic of said at least one RAT (R2);
      the monitoring method comprising a scanning step of at least one characteristic of a second RAT (R2) available for communication in said geographical area (OA) while the wireless communications equipment (T3) maintains an active communications connection with a first RAT (R1), and wherein
      the scanning step of the at least one characteristic of the second RAT (R2) is performed when the wireless communications equipment (T3) does not transmit signals through said active communications connection maintained with the first RAT (R1).
    • 本发明涉及一种在无线系统环境中的无线电接入技术(RAT)监视方法,所述无线系统环境包括无线通信设备(T1至T3)和共存于所述无线通信设备的至少两个不同RAT(R1,R2) (T1至T3)访问用于通信服务的一个或多个通信网络; 所述无线通信设备(T1至T3)包括至少两个电子子系统装置(RS 1,RS 2),每个电子子系统装置适于建立和维持与所述至少两个不同的RAT(R1,R2)中的某一个的活动通信连接; 所述无线通信设备(T3)根据至少一个所述无线通信设备(T3)选择在特定地理区域(OA)中可用的所有RAT(R1,R2)中的至少一个RAT(R2))来建立所述至少一个活动通信连接 所述至少一个RAT(R2)的监视特性; 所述监视方法包括在所述无线通信设备(T3)保持与第一RAT(R1)的活动通信连接的同时可在所述地理区域(OA)中进行通信的第二RAT(R2)的至少一个特征的扫描步骤, 并且其中当所述无线通信设备(T3)不通过所述第一RAT(R1)维护的所述主动通信连接发送信号时,执行所述第二RAT(R2)的所述至少一个特性的扫描步骤。