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Demonstration of 4096QAM THz MIMO wireless delivery employing one-bit delta-sigma modulation

Feng Zhao, Xiongwei Yang, Li Zhao, Yi Wei, and Jianjun Yu

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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.

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Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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