Smart antenna adopts SDMA, and in terms of the difference of transmissiondirection, it can distinguish signals of the same frequency and the same time interspace .
智能天线采用空分多址，利用信号在传播方向上的差别，将同频率、同时隙的信号区分开来。
2
Finally, the paper discusses the current conditions evolution in Miao-zi-hu Island of two types of transmissiondirection of folk, namely, "signifier" and "symbol means" change.
最后，本文探讨了当前庙子湖岛人际传播民俗嬗变的两类方向，即“意符”与“指符”的改变。
3
This change in transmission allowed the researchers to find the size and direction of the magnetic field at the same time.