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    WIRELESS COMMUNICATIONS SYSTEM AND WIRELESS DIGITAL RECEIVER FOR USE THEREIN
    2.
    发明公开
    WIRELESS COMMUNICATIONS SYSTEM AND WIRELESS DIGITAL RECEIVER FOR USE THEREIN 审中-公开
    FOR USE无线通信系统和无线数字接收机THEREIN

    公开(公告)号：EP1714395A1

    公开(公告)日：2006-10-25

    申请号：EP05710286.5

    申请日：2005-02-09

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： MORI, Kenichi ,  TAKAI, Hitoshi

    IPC分类号： H04B1/28

    CPC分类号： H04B1/0017 ,  H04B1/001 ,  H04B1/0025 ,  H04B1/28

    摘要： A base station 2 demodulates a wireless signal after downconverting the signal to a low-frequency signal whose center frequency is fi [Hz] and oversampling the signal. A mobile station 3 demodulates a wireless signal after downconverting the signal to a low-frequency signal whose center frequency is fd [Hz] and undersampling the signal. The same sampling frequency fs [Hz] is used in the base station 2 and in the mobile station 3. The sampling frequency fs [Hz] is set to a value that is an even-number multiple of a wireless symbol transmission rate such that oversampling is done in the base station 2 and undersampling is done in the mobile station 3. The center frequency fi [Hz] is 1/2 to 1 times a frequency corresponding to the bandwidth and is 1/2N (N is a natural number) times the sampling frequency fs [Hz].