OFDM for Terahertz Wireless
Communication Systems
Mohammed El Ghzaoui and Sudipta Das
Abstract Terahertz (THz) communication is one of the suitable technologies for the
upcoming 5G and 6G standards. In fact, THz frequencies cover the electromagnetic
spectrum between 0.1 and 30 THz or 3 mm and 10 µm in wavelength. The limits of
this domain started at the confines of radio frequencies and cover the frequent spectrum which extends until the beginning of the infrared domain. These frequencies
have the advantage of being non-ionizing given the low energy transported. Furthermore, the use of THz frequency for wireless communication systems increase the data
rate over the wireless network. Nevertheless, the multi-path nature of this high bandwidth channel is also a major issue in THz channel. Orthogonal frequency division
multiplexing (OFDM) is a strong communication technique that mitigates the effects
of THz channel. In this chapter, we investigate the OFDM modulation technique for
the THz wireless radio system over multi-path propagation channel. By giving a
multi-path channel model for THz communication system, we design a transceiver
architecture based on OFDM system to delete interferences at the baseband. Simulations shown that with OFDM modulation the THz communication system can
achieve high capacity. In this work, we study the bit error rate (BER) of phase shift
keying (PSK) and quadratic amplitude modulation (QAM) constellation in presence of OFDM modulation with a carrier frequency of 300 GHz over THz channel
module including LOS and NLOS propagation. It is detected from simulations that
the OFDM technique can be a suitable solution for THz communication system.
Keywords THz communication · OFDM · LOS · NLOS · BER · SNR
M. El Ghzaoui
ISNT Team, IMAGE Laboratory, Moulay Ismail University of Meknès, Meknes, Morocco
S. Das (B)
Department of ECE, IMPS College of Engineering and Technology, West Bengal, India
e-mail: sudipta.das1985@gmail.com
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. Biswas et al. (eds.), Emerging Trends in Terahertz Engineering and System
Technologies, https://doi.org/10.1007/978-981-15-9766-4_7
141
Communication Systems
Mohammed El Ghzaoui and Sudipta Das
Abstract Terahertz (THz) communication is one of the suitable technologies for the
upcoming 5G and 6G standards. In fact, THz frequencies cover the electromagnetic
spectrum between 0.1 and 30 THz or 3 mm and 10 µm in wavelength. The limits of
this domain started at the confines of radio frequencies and cover the frequent spectrum which extends until the beginning of the infrared domain. These frequencies
have the advantage of being non-ionizing given the low energy transported. Furthermore, the use of THz frequency for wireless communication systems increase the data
rate over the wireless network. Nevertheless, the multi-path nature of this high bandwidth channel is also a major issue in THz channel. Orthogonal frequency division
multiplexing (OFDM) is a strong communication technique that mitigates the effects
of THz channel. In this chapter, we investigate the OFDM modulation technique for
the THz wireless radio system over multi-path propagation channel. By giving a
multi-path channel model for THz communication system, we design a transceiver
architecture based on OFDM system to delete interferences at the baseband. Simulations shown that with OFDM modulation the THz communication system can
achieve high capacity. In this work, we study the bit error rate (BER) of phase shift
keying (PSK) and quadratic amplitude modulation (QAM) constellation in presence of OFDM modulation with a carrier frequency of 300 GHz over THz channel
module including LOS and NLOS propagation. It is detected from simulations that
the OFDM technique can be a suitable solution for THz communication system.
Keywords THz communication · OFDM · LOS · NLOS · BER · SNR
M. El Ghzaoui
ISNT Team, IMAGE Laboratory, Moulay Ismail University of Meknès, Meknes, Morocco
S. Das (B)
Department of ECE, IMPS College of Engineering and Technology, West Bengal, India
e-mail: sudipta.das1985@gmail.com
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
A. Biswas et al. (eds.), Emerging Trends in Terahertz Engineering and System
Technologies, https://doi.org/10.1007/978-981-15-9766-4_7
141