公开(公告)号：WO2009106964A2

公开(公告)日：2009-09-03

申请号：PCT/IB2009/000360

申请日：2009-02-25

Applicant: ALMA MATER STUDIORIUM - UNIVERSITA' DI BOLOGNA ,  DARDARI, Davide

Inventor： DARDARI, Davide

IPC: G01S13/02 ,  H04B1/69 ,  G06K7/00 ,  G01S7/41

CPC classification number: G06K7/10306 ,  G01S13/02 ,  G01S13/756 ,  G06K7/0008 ,  G06K19/0723 ,  H04B1/719

Abstract: A method for communication in ultra-wide bandwidth RFID systems comprising generating through a transceiver device an interrogation signal, composed of at least a sequence of equally time spaced pulses with period (T3), transmitting said signal to at least one RFID identification device which generates a response signal and transmits it back to said transceiver device, said method further comprising coding said interrogation signal according to a numerical coding sequence, generating said response signal by varying, in each period (T3) of said pulse sequence of the interrogation signal, the polarity of pulses using said numerical coding sequence. An apparatus for communication in ultra -wide bandwidth RFID systems comprising a transceiver device (1,101) and a RFID identification device (11), suitable for communicating each other, said RFID identification device (11) comprises a backscatter modulator (12) suitable for modulating a signal reflected by an antenna (18) of the identification device RFID.

Abstract translation: 一种用于在超宽带宽RFID系统中进行通信的方法，包括：通过收发器设备生成由具有周期（T3）的至少一系列具有同等时间间隔的脉冲组成的询问信号，将所述信号发送到产生 响应信号并将其发送回所述收发器装置，所述方法还包括根据数字编码序列对所述询问信号进行编码，通过在所述询问信号的所述脉冲序列的每个周期（T3）中改变生成所述响应信号， 使用所述数字编码序列的脉冲极性。 一种用于在超宽带宽RFID系统中通信的装置，包括适于彼此通信的收发器设备（1,101）和RFID识别设备（11），所述RFID识别设备（11）包括适合于调制的后向散射调制器（12） 由识别装置RFID的天线（18）反射的信号。

公开(公告)号：WO2009144556A1

公开(公告)日：2009-12-03

申请号：PCT/IB2009/005664

申请日：2009-05-21

Applicant: META SYSTEM S.P.A. ,  DARDARI, Davide ,  MAZZOTTI, Matteo ,  MALDINI, Giorgio ,  BUONOCUNTO, Nicola

Inventor： DARDARI, Davide ,  MAZZOTTI, Matteo ,  MALDINI, Giorgio ,  BUONOCUNTO, Nicola

IPC: H04B3/36

CPC classification number: H04B3/36 ,  H04B3/23

Abstract: An improved repeater device for cancelling and/or reducing echo signals comprises an amplification line of an input signal received into an output signal to be transmitted and an echo-cancelling unit associated to the amplification line for reducing or cancelling an echo signal received, generated by the output signal and superposed on the input signal. The echo-cancelling unit comprises at least an echo-cancelling filter, impulse generating means associated to the amplification line and suitable for generating at least an impulse signal to be transmitted, estimation means for estimating the echo signal starting from the input signal and from the impulse signal transmitted, and means for updating the coefficients of the echo-cancelling filter starting from the estimated echo signal. The method for cancelling and/or reducing echo signals in repeater devices comprises a stage of generating at least an impulse signal, a stage of transmitting an output signal comprising the impulse signal, a stage of receiving an input signal on which an echo signal is superposed, which echo signal is at least in part generated by the impulse signal transmitted, a stage of estimating the echo signal performed starting from the input signal and from the impulse signal transmitted, and a stage of updating coefficients of at least a cancelling filter of the echo signal performed starting from the estimated echo signal.

Abstract translation: 用于抵消和/或减少回波信号的改进的中继器装置包括接收到要发送的输出信号中的输入信号的放大线和与放大线相关联的回波消除单元，用于减少或消除所接收的回波信号，所述回波信号由 输出信号并叠加在输入信号上。 回波消除单元至少包括回波消除滤波器，与放大线相关联的脉冲产生装置，适用于产生至少要传输的脉冲信号;估计装置，用于估计从输入信号开始的回波信号; 脉冲信号，以及用于从所估计的回波信号开始更新回波消除滤波器的系数的装置。 用于在中继器装置中消除和/或减少回波信号的方法包括产生至少一个脉冲信号的阶段，一个发送包括该脉冲信号的输出信号的阶段，一个接收其上叠加有回波信号的输入信号的阶段 ，所述回波信号至少部分地由所发送的脉冲信号产生，估计从所述输入信号开始的所述回波信号和从所发送的所述脉冲信号执行的回波信号的阶段，以及至少所述至少一个消除滤波器的系数的更新阶段 从估计的回波信号开始执行回波信号。

公开(公告)号：WO2009106964A3

公开(公告)日：2009-10-29

申请号：PCT/IB2009000360

申请日：2009-02-25

Applicant: ALMA MATER STUDIORIUM UNI DI B ,  DARDARI DAVIDE

Inventor： DARDARI DAVIDE

IPC: G01S13/02 ,  G01S7/41 ,  G06K7/00 ,  H04B1/69

CPC classification number: G06K7/10306 ,  G01S13/02 ,  G01S13/756 ,  G06K7/0008 ,  G06K19/0723 ,  H04B1/719

Abstract: A method for communication in ultra-wide bandwidth RFID systems comprising generating through a transceiver device an interrogation signal, composed of at least a sequence of equally time spaced pulses with period (T3), transmitting said signal to at least one RFID identification device which generates a response signal and transmits it back to said transceiver device, said method further comprising coding said interrogation signal according to a numerical coding sequence, generating said response signal by varying, in each period (T3) of said pulse sequence of the interrogation signal, the polarity of pulses using said numerical coding sequence. An apparatus for communication in ultra -wide bandwidth RFID systems comprising a transceiver device (1,101) and a RFID identification device (11), suitable for communicating each other, said RFID identification device (11) comprises a backscatter modulator (12) suitable for modulating a signal reflected by an antenna (18) of the identification device RFID.

Abstract translation: 一种用于超宽带宽RFID系统中的通信的方法，包括通过收发器装置产生询问信号，所述询问信号由至少一系列具有周期（T3）的等时间隔的脉冲组成，将所述信号传输到至少一个RFID识别装置， 所述方法还包括根据数字编码序列对所述询问信号进行编码，通过在所述询问信号的所述脉冲序列的每个周期（T3）中改变所述响应信号，产生所述响应信号， 使用所述数字编码序列的脉冲极性。 一种用于在超宽带宽RFID系统中进行通信的装置，所述超宽带RFID系统包括适合于彼此通信的收发器装置（1,101）和RFID识别装置（11），所述RFID识别装置（11）包括反向散射调制器（12） 由识别装置RFID的天线（18）反射的信号。