Diffuse Scattering From Rough Surfaces in THz Communication Channels

Femtosecond-Long Pulse-Based Modulation for Terahertz Band Communication in Nanonetworks

“…There are additional propagation effects that might impact the received signal, such as multi-path propagation. A multipath model for the Terahertz Band needs to account for the impact of molecular absorption, the reflection coefficient of common materials at Terahertz Band frequencies and the impact of diffused scattering on rough surfaces [30], amongst others. The few multi-path channel models existing to date [28] are mainly focused on the 300 GHz window, and a complete model for the entire Terahertz Band does not exist.…”

“…, (30) where N m stands for the noise power associated to the symbol m, N I is variance of the interference, and E [I] is the mean value of the interference. Then, IR I u−sym can be obtained by combining (30), (20) and (19) in (18).…”

“…Then, IR I u−sym can be obtained by combining (30), (20) and (19) in (18). Finally, the multiuser achievable information rate is given by (31).…”

“…4(a), the achievable information rate for every nano-device IR I u−sym in bit/symbol, obtained from (18), (19) and (20) in (30), is shown as a function of the number of nano-devices U and the transmission distance d.…”

Invited Article: Channel performance for indoor and outdoor terahertz wireless links

“…Since most obstructions are likely to be opaque to millimeter and THz waves, the conventional wisdom is that THz links will be restricted to line-of-sight (LOS) propagation 9,12 or perhaps to paths which incorporate a small number of specular reflections from relatively smooth surfaces. [54][55][56][57][58] Although numerous LOS link demonstrations have been described in the literature (see Fig. 1), the possibility of specular non-line-of-sight (NLOS) link pathways has been less well investigated.…”