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    CORRECTION OF QUADRATURE PHASE AND GAIN MISMATCH IN RECEIVER DOWN-CONVERSION USING A DUAL CORDIC ARCHITECTURE
    1.
    发明公开
    CORRECTION OF QUADRATURE PHASE AND GAIN MISMATCH IN RECEIVER DOWN-CONVERSION USING A DUAL CORDIC ARCHITECTURE 审中-公开
    磨边的纠正措施相和不匹配增益接收器向下执行联CORDIC架构

    公开(公告)号：EP2995052A1

    公开(公告)日：2016-03-16

    申请号：EP14700792.6

    申请日：2014-01-21

    申请人： Nordic Semiconductor ASA

    发明人： WICHLUND, Sverre ,  WEBERG, Stein, Erik ,  SUNDSBØ, Ingil

    IPC分类号： H04L27/00 ,  H04L27/38

    CPC分类号： H04B1/12 ,  H04L27/0014 ,  H04L27/364 ,  H04L27/3827 ,  H04L2027/003

    摘要： A digital radio receiver is disclosed comprising: • a first section arranged to receive an analogue radio signal and to generate therefrom digital intermediate frequency I and Q channel samples, • a second section arranged to convert said I and Q channel samples to a lower, baseband frequency, said second section comprising: • a first coordinate rotation digital computer, CORDIC, module arranged to perform a complex rotation of the I channel samples; • a second coordinate rotation digital computer, CORDIC, module arranged to perform a complex rotation of the Q channel samples; • a phase accumulator arranged to provide an output signal representing a complex rotation to be applied to each of the I and Q channel samples, • wherein the second section is arranged such that the phase accumulator output signal is modified by a phase offset signal prior to being supplied to one of the first and second coordinate rotation digital computers, CORDICs.