公开(公告)号：EP0806844A1

公开(公告)日：1997-11-12

申请号：EP96940143.9

申请日：1996-11-28

申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.

发明人： SAWAHASHI, Mamoru ,  ANDO, Hidehiro ,  MIKI, Yoshinori ,  HIGUCHI, Kenichi ,  TANAKA, Shinya

IPC分类号： H04B7/08 ,  H04B7/26 ,  H04B1/707 ,  H04J13/04

CPC分类号： H04B1/709 ,  H04B1/707 ,  H04B1/712 ,  H04B7/0851 ,  H04B7/0857 ,  H04B7/086 ,  H04L1/02 ,  H04L1/06

摘要： A weight coefficient is feedback-controlled so as to maximize the ratio of desired signal power to interference power (SIR), whereby it is possible to improve reception quality and to increase the number of subscribers per cell and it is also possible to increase the speed of establishment of diffused code synchronization and the speed of convergence of the weight coefficient. A coherence adaptive diversity arrangement to which absolute synchronization detection is applicable is adopted. The weighht coefficient of each diversity branch is adaptively feedback-controlled, whereby it is possible to reduce the influence of interference power from other communicators, so that the number of subscribers per cell can be increased. Furthermore, a direction in which a highest reception SIR is obtainable is determined by rotating an antenna with directivity of predetermined angle being given to it. After that, by setting the initial value of the weight coefficient to the direction, the speed of convergence of the weight coefficient can be increased.

摘要翻译： 加权系数被反馈控制，以便最大化期望的信号功率与干扰功率（SIR）的比率，由此可以提高接收质量并增加每个小区的用户数量，并且还可以增加速度 建立扩散码同步和权重系数收敛速度。 采用绝对同步检测适用的相干自适应分集方案。 每个分集支路的权重系数被自适应反馈控制，从而可以减少来自其他通信器的干扰功率的影响，从而可以增加每个小区的用户数量。 此外，通过旋转具有预定角度的方向性的天线来确定可获得最高接收SIR的方向。 之后，通过将权重系数的初始值设定为方向，可以提高权重系数的收敛速度。