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    • 7. 发明公开
    • LINEAR INTERPOLATION METHOD FOR CHANNEL PULSE RESPONSE ADAPTATION IN RECEIVERS FOR TDMA MOBILE RADIO SYSTEMS
    • TDMA移动无线电系统接收机中信道脉冲响应自适应的线性插值方法
    • EP0693239A1
    • 1996-01-24
    • EP94911825.0
    • 1994-03-19
    • ANT Nachrichtentechnik GmbH
    • HAGMANNS, Franz-Josef
    • H04B7H04L25
    • H04B7/005H04L25/0236
    • A process is disclosed for adapting the time-variable channel pulse response during a burst in receivers for TDMA mobile radio systems, in which each burst has a central test sequence known by the receiver and by means of each an initial evaluation of the channel pulse response is possible. The process is characterized in that the reception signal of a burst is appropriately scanned; the received burst is subdivided into 2N + 1 sectors A-N,...,A+N, constituted each of M signal scanning values, supposing that the channel pulse response within each sector may be supposed constant; a burst is processed in 2N steps, a sector Ai, i ¸ 0 is selected in the kth step by an appropriate algorhithm (for example the reliability-controlled data detection according to [4]), whereas when i > 0, the sector Ai-1 should already have been processed and when i 0 and sectors An, -N « n « -1 have not yet all been processed, ψi = θi-1; when i > 0 and when all sectors An, -N « n « -1 have already been processed, ψi = c0 + ic1; when i
    • 公开了一种用于适应TDMA移动无线电系统的接收机中的突发期间的时变信道脉冲响应的过程,其中每个突发具有接收机已知的中央测试序列并且借助于每个信道脉冲响应的初始评估 是可能的。 该过程的特征在于突发的接收信号被适当地扫描; 假设每个扇区内的信道脉冲响应可以假设为恒定,则接收的脉冲被细分成构成M个信号扫描值中的每一个的2N + 1个扇区A-N,...,A + N; 以2N步骤处理突发,通过适当的算法(例如根据[4]的可靠性控制的数据检测)在第k步骤中选择扇区A i,i≠0,而当i> 0时,扇区A i -1应该已经被处理,并且当i <0时,扇区Ai + 1应该已经被处理。 在检测到扇区A i之前计算用作用于检测扇区A 1的通道脉冲响应的向量ψi,θn指定扇区中已经处理的通道脉冲响应的估计值。 当i> 0并且扇区An,-N«n«-1还没有被处理时,ψi=θi-1; 当i> 0并且当所有扇区An,-N«n«-1已经被处理时,ψi= c0 + ic1; 当i <0并且扇区An,+1«n«+ N还没有被处理时,ψi=θi+ 1; 当i <0并且所有扇区An,+1«n«+ N已经被处理时,ψi= c0 + ic1; 在检测到扇区A i之后,通过利用LMS算法在整个扇区上的自适应来计算所述扇区中的信道脉冲响应的估计值θi,以ψ1开始。 执行所述步骤,直到所有部门都被处理完毕。 本发明对于桥接移动无线电接收机中的衰落侵入是有用的。