MODULATION AND DEMODULATION OF A COMBINATION OF ANALOG AND DIGITAL SIGNALS
    1.
    发明申请
    MODULATION AND DEMODULATION OF A COMBINATION OF ANALOG AND DIGITAL SIGNALS 审中-公开
    模拟和数字信号组合的调制和解调

    公开(公告)号:WO2004021661A1

    公开(公告)日:2004-03-11

    申请号:PCT/CH2003/000594

    申请日:2003-09-01

    CPC classification number: H04L27/2637 H04L27/02 H04L27/265 H04L27/34

    Abstract: In order to transmit a combination of modulated analog and digital signals in which a digital data signal (D 1 ) is modulated by means of singlecarrier quadrature amplitude modulation (QAM) or by means of multicarrier Orthogonal Frequency Division Multiplex (OFDM) modulation and an analog signal (A 1 ) is modulated by means of single side band modulation (SSB), a singlecarrier or multicarrier quadrature amplitude base modulation of the digital data signal (D 1 ) and an SSB base modulation of the analog signal (A 1 ), is performed. Corresponding components of the modulated and optionally upsampled digital ( u m I , o m I , u m Q ,O m Q )and analog ( s m I , s m Q ) signals are added, and a carrier frequency modulation (4) of the added components is performed. In a receiver, the same carrier frequency demodulator (8) is used for the superimposed modulated analog and digital signals, which then are base band demodulated separately (5, 6, 7). The invention reduces the total computational effort for modulating the digital and analog signals by performing the carrier frequency modulation or demodulation only once.

    Abstract translation: 为了传输其中数字数据信号(D1)通过单载波正交幅度调制(QAM)或通过多载波正交频分复用(OFDM)调制和模拟信号(QAM)进行调制的调制模拟和数字信号的组合 (A1)通过单边带调制(SSB)进行调制,执行数字数据信号(D1)的单载波或多载波正交幅度基本调制和模拟信号(A1)的SSB基本调制。 调制和可选的上采样数字(u> I,o> I,u> Q,O Q)和模拟(s> I,s Q)信号的相应分量 并且执行附加分量的载波频率调制(4)。 在接收机中,相同的载波频率解调器(8)用于重叠调制的模拟和数字信号,然后分别对基带进行基带解调(5,6,7)。 本发明通过仅执行载波频率调制或解调一次来减少用于调制数字和模拟信号的总计算量。

    MODULATION AND DEMODULATION OF A COMBINATION OF ANALOG AND DIGITAL SIGNALS
    3.
    发明授权
    MODULATION AND DEMODULATION OF A COMBINATION OF ANALOG AND DIGITAL SIGNALS 有权
    调制和解调的组合的模拟和数字信号

    公开(公告)号:EP1540913B1

    公开(公告)日:2008-06-18

    申请号:EP03790614.6

    申请日:2003-09-01

    Applicant: ABB Schweiz AG

    CPC classification number: H04L27/2637 H04L27/02 H04L27/265 H04L27/34

    Abstract: In order to transmit a combination of modulated analog and digital signals in which a digital data signal (D1) is modulated by means of singlecarrier quadrature amplitude modulation (QAM) or by means of multicarrier Orthogonal Frequency Division Multiplex (OFDM) modulation and an analog signal (A1) is modulated by means of single side band modulation (SSB), a singlecarrier or multicarrier quadrature amplitude base modulation of the digital data signal (D1) and an SSB base modulation of the analog signal (A1), is performed. Corresponding components of the modulated and optionally upsampled digital (umI, omI ,umQ,OmQ)and analog (smI, smQ) signals are added, and a carrier frequency modulation (4) of the added components is performed. In a receiver, the same carrier frequency demodulator (8) is used for the superimposed modulated analog and digital signals, which then are base band demodulated separately (5, 6, 7). The invention reduces the total computational effort for modulating the digital and analog signals by performing the carrier frequency modulation or demodulation only once.

    MODULATION AND DEMODULATION OF A COMBINATION OF ANALOG AND DIGITAL SIGNALS
    4.
    发明公开
    MODULATION AND DEMODULATION OF A COMBINATION OF ANALOG AND DIGITAL SIGNALS 有权
    调制和解调的组合的模拟和数字信号

    公开(公告)号:EP1540913A1

    公开(公告)日:2005-06-15

    申请号:EP03790614.6

    申请日:2003-09-01

    Applicant: ABB Schweiz AG

    CPC classification number: H04L27/2637 H04L27/02 H04L27/265 H04L27/34

    Abstract: In order to transmit a combination of modulated analog and digital signals in which a digital data signal (D1) is modulated by means of singlecarrier quadrature amplitude modulation (QAM) or by means of multicarrier Orthogonal Frequency Division Multiplex (OFDM) modulation and an analog signal (A1) is modulated by means of single side band modulation (SSB), a singlecarrier or multicarrier quadrature amplitude base modulation of the digital data signal (D1) and an SSB base modulation of the analog signal (A1), is performed. Corresponding components of the modulated and optionally upsampled digital (umI, omI ,umQ,OmQ)and analog (smI, smQ) signals are added, and a carrier frequency modulation (4) of the added components is performed. In a receiver, the same carrier frequency demodulator (8) is used for the superimposed modulated analog and digital signals, which then are base band demodulated separately (5, 6, 7). The invention reduces the total computational effort for modulating the digital and analog signals by performing the carrier frequency modulation or demodulation only once.

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