A METHOD OF AND APPARATUS FOR TRANSMITTING DATA AT A HIGH DATA RATE IN A PLURALITY OF LOW DATA RATE CHANNELS

    公开(公告)号:MY116752A

    公开(公告)日:2004-03-31

    申请号:MYPI9802707

    申请日:1998-06-17

    Applicant: QUALCOMM INC

    Abstract: A NOVEL AND IMPROVED METHOD AND APPARATUS FOR GENERATING A REDUCED PEAK AMPLITUDE HIGH DATA RATE CHANNEL COMPRISING A SET OF LOWER RATE CHANNELS IS DESCRIBED. THE SET OF LOWER RATE CHANNELS ARE PHASE ROTATED BEFORE BEING SUMMED AND TRANSMITTED. THE AMOUNT OF PHASE ROTATION IS DEPENDENT ON THE NUMBER OF CHANNELS USED TO FORM THE HIGHER RATE CHANNEL. IN AN EMBODIMENT WHERE TWO LOWER RATE CHANNELS ARE USED, THE IN-PHASE AND QUADRATURE-PHASE COMPONENTS (154, 160; 156, 158) OF THE TWO CHANNELS ARE COMPLEX MULTIPLIED (162; 164) BEFORE UP CONVERSION WITH IN-PHASE AND QUADRATURE-PHASE SINUSOIDS. FOR A HIGH RATE CHANNEL COMPRISING MORE THAN TWO LOWER RATE CHANNELS, THE IN-PHASE AND QUADRATURE-PHASE COMPONENT OF EACH CHANNEL IS UPCONVERTED WITH A SET OF SINUSOIDS THAT ARE PHASE OFFSET FROM ONE ANOTHER. (FIGURE 4)

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