نتایج جستجو برای: and modulation index
تعداد نتایج: 16892041 فیلتر نتایج به سال:
Advanced wireless communication with high spectrum efficiency and energy has always fascinated humanity, especially the explosive increase of global mobile data services. Index modulation (IM) recently been found to be a promising technique due transmission additional bits via indices available transmit entities. However, practical implementation IM remains great challenge associated complicate...
The world population is rapidly increasing, which in turn increases food needs. On the other hand, production main cause of water withdrawal. Precision agriculture, based on Internet Underground Things (IoUT), has recently been proposed to reduce withdrawals. IoUT comprises sensors and communication devices that are partially or fully submerged beneath ground surface. However, current technolog...
We theoretically investigate the use of Rayleigh surface acoustic waves (SAWs) for refractive index modulation in optical waveguides consisting of amophous dielectrics. Considering low-loss Si3N4 waveguides with a standard core cross section of 4.4×0.03 μm size, buried 8-μm deep in a SiO2 cladding we compare surface acoustic wave generation in various different geometries via a piezo-active, le...
Orthogonal frequency division multiplexing with index modulation (OFDM-IM), which transmits information bits via $M$ -ary constellation symbols and indices of the active subcarriers, is a promising OFDM-based multicarrier transmission...
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