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Spectral efficient 64-QAM-OFDM terahertz communication link
Optics Express
|October 19, 2017
Summary
We demonstrate a record spectral efficient terahertz communication system using coherent radio-over-fiber technology. This system achieved 59 Gbit/s using 64-QAM-OFDM modulation at 325 GHz for high-speed wireless data transmission.
Area of Science:
- Terahertz (THz) communication systems
- Optical and wireless networking
Background:
- Terahertz (THz) frequencies offer vast bandwidth for high-speed data transmission.
- Integrating THz wireless links with fiber optic networks is crucial for future communication infrastructure.
Purpose of the Study:
- To demonstrate a spectrally efficient THz communication system.
- To achieve high data rates in wireless THz transmission using a coherent radio-over-fiber approach.
Main Methods:
- Utilized a coherent radio-over-fiber (CRoF) architecture.
- Employed 64-quadrature amplitude modulation-orthogonal frequency-division multiplexing (64-QAM-OFDM) modulation.
- Experimentally transmitted data over a 10 GHz wide wireless channel at approximately 325 GHz.
Main Results:
- Achieved a record spectral efficiency in a THz communication system.
- Demonstrated high-performance back-to-back and wireless THz transmission.
- Successfully delivered a data rate of 59 Gbit/s.
Conclusions:
- The CRoF approach enables highly spectrally efficient THz communication.
- This technology paves the way for future ultra-high-speed wireless data links.
- Experimental validation confirms the viability of 325 GHz for high-capacity wireless transmission.
