Distance-aware multi-carrier (DAMC) modulation in Terahertz Band communication

Abstract

Terahertz Band (0.1-10 THz) communication is envisioned as a key technology to satisfy the increasing demand for ultra-broadband wireless communication. THz Band communication will alleviate the spectrum scarcity and capacity limitations of current wireless systems, and enable new applications both in classical networks and novel nanoscale networks. In this paper, a novel distance-aware multi-carrier (DAMC) modulation scheme is developed for both single-transmitter single-receiver and single-transmitter multiple-receiver cases in THz Band communication. The developed DAMC modulation scheme takes advantage of the distance- and frequency-dependent channel peculiarities, and provides adaptive utilization of the ultra-broad bandwidth in the THz Band. Furthermore, the data rates of the DAMC scheme are analytically investigated, numerically evaluated, and compared with existing single-band pulse-based modulation and fixed-bandwidth adaptive modulation. The results show that data rates can be improved by one order of magnitude by using the DAMC scheme, at the costs of design complexity for the control unit, multi-carrier modulator and channel feedback path.