Demonstration of M-QAM OFDM bidirectional 60/25 GHz transmission over 10 km Fiber, 100 m FSO and 2 m radio seamless heterogeneous fronthaul link

Vallejo L.; Ortega B.; Mora J.Nguyen D.-N.Guerra C.Bohata J.Spacil J.Zvanovec S.

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Demonstration of M-QAM OFDM bidirectional 60/25 GHz transmission over 10 km Fiber, 100 m FSO and 2 m radio seamless heterogeneous fronthaul link

机译：Demonstration of M-QAM OFDM bidirectional 60/25 GHz transmission over 10 km Fiber, 100 m FSO and 2 m radio seamless heterogeneous fronthaul link

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? 2022 The Author(s)In this paper, we demonstrate the experimental transmission of 16- and 64- quadrature amplitude modulation (QAM) Long Term Evolution - Orthogonal Frequency Division Multiplexing (LTE-OFDM) signals by using millimetre wave frequencies at 60 GHz and 25 GHz for downlink and uplink, respectively, over a heterogeneous optical fronthaul infrastructure. A directly modulated laser was employed for both links, which enables the cost-effective full-duplex system proposal. The bidirectional link consists of a 10 km of single mode fiber, a 100 m long free space optics channel and 2 m long wireless radio link, which brings flexibility for future wireless networks. The error vector magnitude (EVM) parameter is measured for a range of the received optical and electrical power as well as the signal-to-noise ratio. A comprehensive estimation of penalty factors in the different network segments is presented. The successful transmission over the whole proposed network with the EVM below the required limit of 9 for 64-QAM with 20 MHz bandwidth is experimentally demonstrated for the received optical power of ?2.7 dBm and ?1 dBm for the downlink and uplink, respectively.

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《Optical fiber technology》 |2023年第5期|1.1-1.7|共7页
作者
Vallejo L.; Ortega B.; Mora J.Nguyen D.-N.Guerra C.Bohata J.Spacil J.Zvanovec S.;
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Instituto de Telecomunicaciones y Aplicaciones Multimedia Universitat Politecnica de ValenciaInstituto de Telecomunicaciones y Aplicaciones Multimedia Universitat Politecnica de Valencia||DSP Centre of Excellence School of Computer Science and Electronic;

Instituto de Telecomunicaciones y Aplicaciones Multimedia Universitat Politecnica de Valencia;

Department of Electromagnetic Field Faculty of Electrical Engineering Czech Technical University in Prague||II-VI Incorporated (now is Coherent Corp.)Department of Electromagnetic Field Faculty of Electrical Engineering Czech Technical University in Prague;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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5G; Free space optics; Fronthaul; Full-duplex; Millimeter wave; Optical fiber;

Demonstration of M-QAM OFDM bidirectional 60/25 GHz transmission over 10 km Fiber, 100 m FSO and 2 m radio seamless heterogeneous fronthaul link

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