Smart antenna adopts SDMA, and in terms of the difference of transmission direction, 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。

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Finally, the paper discusses the current conditions evolution in Miao-zi-hu Island of two types of transmission direction 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。

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This change in transmission allowed the researchers to find the size and direction of the magnetic field at the same time.

这一传递中的变化使得研究人员可以同时找到磁场的大小和方向。

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Communications is in one direction for any transmission.

FORBES: Connect

In 1874, Edison invented the quadruplex telegraph, which allowed the transmission of two signals in each direction down one wire.

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