310 GHz communication system based on direct spreading sequence

Xiaolei Wu; Zikang Xiong; Jingsuo He; Bo Su; Cunlin Zhang

doi:10.1117/12.2537718

18 November 2019 310 GHz communication system based on direct spreading sequence

Xiaolei Wu, Zikang Xiong, Jingsuo He, Bo Su, Cunlin Zhang

Proceedings Volume 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI; 111961H (2019) https://doi.org/10.1117/12.2537718
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

With the advent of the 5G era, the demand for wireless communication rates is increasing, making high-speed wireless communication become a hot spot and focus. Due to the wider frequency bandwidth and good confidentiality, the terahertz band has attracted wide attention in the field of high-speed wireless communication above Gbps. However, terahertz wave is easily absorbed by water and attenuates seriously when it is transmitted in the atmosphere, which seriously restricts the development of communication in the terahertz band. However, the spread spectrum communication has attracted much attention in the field of terahertz communication because of its strong anti-fading, anti-interference and good confidentiality. In this paper, the simulation model of direct sequence spread spectrum (DSSS) communication system is established by using MATLAB, and the baseband signal and m-sequence spreading code of different rates are set, and 310GHz is used as the carrier frequency to transmit in additive white Gaussian noise channels with signal-to-noise ratio (SNR) of 17dB to -1dB. Medium transmission, by checking the bit error rate (BER), to verify the anti-interference of the DSSS technology applied in the terahertz band. The simulation results show that when the spread spectrum gain is large, the DSSS can be used in terahertz communication under the same BER to transmit in channels with a SNR of 10dB worse. Therefore, the application of spread spectrum communication technology to terahertz communication has a good development scenario and will effectively promote the development of terahertz communication.

Citation Download Citation

Xiaolei Wu, Zikang Xiong, Jingsuo He, Bo Su, and Cunlin Zhang "310 GHz communication system based on direct spreading sequence", Proc. SPIE 11196, Infrared, Millimeter-Wave, and Terahertz Technologies VI, 111961H (18 November 2019); https://doi.org/10.1117/12.2537718

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KEYWORDS

Signal to noise ratio

Telecommunications

Information and communication technologies

Wireless communications

Modulation

Demodulation

Interference (communication)

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