传输信号采用正交相移键控调制方式，以有效利用有限通信带宽。

Quadrature phase shift keying(QPSK) signaling is employed to make efficient use of the available bandwidth.

youdao

传输信号采用正交相移键控调制方式，以有效利用有限通信带宽。

Quadrature phase shift keying(QPSK) signaling is employed to make efficient use of the available bandwidth.

youdao