Modern communications systems employ bandwidth-efficient modulation techniques, such as quadrature amplitude modulated (QAM). With QAM, the amplitude and phase of a sinusoidal signal are both varied ...
Modulation is fundamental to electronic communications. The modulating signal might be analog in nature (voice or music) or digital bit streams. Most modern communication systems are digital, using ...
Media Contact Yaobiao Li Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS liyaobiao@ciomp.ac.cn Office: 86-431-861-76851 Expert Contact Yikai Su Shanghai Jiao ...
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