Demonstration of 4096QAM THz MIMO wireless delivery employing one-bit delta-sigma modulation
Feng Zhao, Xiongwei Yang, Li Zhao, Yi Wei, Jianjun Yu
Abstract
We experimentally demonstrate 2-Gbaud 4096-ary quadrature amplitude modulation (4096QAM) signal transmission over 2-m wireless distance at 370 GHz in a photonics-aided terahertz (THz)-wave communication system. By using one-bit quantized delta-sigma modulation (DSM) and photonics-aided technology, we successfully achieve the transmission of high-order QAM signals over THz multiple-input multiple-output (MIMO) links. After 2 m of free space transmission, its bit error rate (BER) is below the 20% soft-decision forward error correction (20% SD-FEC) threshold of 2.4 × 10 −2 . To the best of our knowledge, this is the first time to apply DSM technology in a THz MIMO link transmission.
Topics & Concepts
Quadrature amplitude modulationMIMOTerahertz radiationBit error ratePhotonicsTransmission (telecommunications)Modulation (music)PhysicsWirelessElectronic engineeringOpticsQAMComputer scienceFree-space optical communicationAmplitude modulationForward error correctionOptical communicationTelecommunicationsBandwidth (computing)Frequency modulationChannel (broadcasting)EngineeringAcousticsDecoding methodsPhotonic and Optical DevicesAdvanced Photonic Communication SystemsOptical Network Technologies