Abstract Increasing data rates in wireless communications are accompanied with the need for new unoccupied and unregulated bandwidth electromagnetic spectrum. Higher carrier frequencies lower THz frequency range might offer solution future indoor communication systems of 100 Gbit/s beyond that cannot be located elsewhere. In this review, we discuss propagation channel measurements an extremely ...

et al. comes next, where the results on temperature structure of chromosphere, chromospheric Figure 1. ALMA images Sun at 1.3 mm (band 6). Left: Full disk image obtained by scanning with a single dish; spatial resolution is 30 . Right: High (1 ) region around sunspot, in interferometric mode mosaicking. Both were December 18, 2015, during commissioning period and processed authors for better vi...