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    • 23. 发明授权
    • Verification of the antenna weights of the base station in a UMTS mobile radio receiver by use of the Viterbi algorithm with fed-back transmission diversity
    • 通过使用具有反馈传输分集的维特比算法来验证UMTS移动无线电接收机中基站的天线权重
    • US07551695B2
    • 2009-06-23
    • US10976398
    • 2004-10-29
    • Michael Speth
    • Michael Speth
    • H04L27/06
    • H04B7/0634H04B7/0654
    • A mobile station sends to the base stations a bit vector which contains weighting factors (w1, w2) for the amplitudes and/or the phases of the signals to be emitted from the antennas. The bit vector is updated by changing one bit position for each time slot, and by transmitting this from the mobile station to the base station in the form of a bit (e.g., an FBI (feedback information) bit). A trellis diagram can be set up comprising the possible states of the bit vector and the possible state changes (branches) and the Viterbi algorithm can be used for the determination of the weighting factors actually used by the base station, taking account of both the currently transmitted training symbols and the previously transmitted training symbols.
    • 移动台向基站发送包含用于从天线发射的信号的幅度和/或相位的加权因子(w1,w2)的比特向量。 通过改变每个时隙的一个比特位置来更新比特向量,并且以比特的形式(例如,FBI(反馈信息)比特)从移动台向基站发送该比特向量。 可以设置包括位向量的可能状态和可能的状态改变(分支)的网格图,并且维特比算法可以用于确定基站实际使用的加权因子,同时考虑到当前 传输的训练符号和先前传输的训练符号。