Chapter 7SMTs for Millimeter‐Wave Communications
Millimeter‐wave (mmWave) communications offer a plenty of frequency spectrum, ranging from 30 to 300 GHz, that can be exploited to achieve multi‐gigabits per second (Gb/s) data rates [257–259]. The E‐band at 
GHz offers 1 Gb s
up to 10 Gb s
for typical distances of 3 km with an available worldwide low‐cost license [260]. Also, it has been demonstrated in [260–263] that wave propagation at E‐band has negligible atmospheric attenuation (less than 0.5 dB km
) and is unaffected by dust, snow, and any other channel deterioration. Although heavy rain is shown to significantly impact the performance of E‐band mmWave systems. However, heavy rain usually occurs in limited part of the world [264], and the radio link can be designed to overcome the attenuation resulted from heavy rain [260]. As such, mmWave technology is one of the promising techniques for 5G and beyond wireless standards, and it has been adopted in several recent standards such as mmWave WPAN (IEEE 802.15.3c‐2009) [265], WiGig (IEEE 802.11ad) [266], and WirelessHD [267].
The use of mmWave ...
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