Experimental study on LTE signal transmission in multi-service Radio-over-Fiber (RoF) system

Naemat, Amran; Hassan, S. M. Mohd; Muhammad, N. F. I.; Marzuki, Azah Syafiah Mohd; Kushairi, Norhapizin

doi:10.1109/micc.2017.8311776

Cited by 1 publication

(1 citation statement)

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“…The total aggregated data rate was 4.56 Gb/s. In [22], the photonic generation of an RF multiple-input-multiple-output signal, in a dense wavelength division multiplexing RoF setup with MZMs, has been described and a 1 Gb/s transmission through 2 km of RoF, and an additional 6-m free-space RF channel was demonstrated. Another published work showed an experimental long-term evolution (LTE) transmission in a multi-service RoF system at 26 GHz [23].…”

Section: Introductionmentioning

confidence: 99%

Transmitters for Combined Radio Over a Fiber and Outdoor Millimeter-Wave System at 25 GHz

et al. 2020

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In the modern wireless networks, millimeter-wave radio-frequency (RF) bands are becoming more attractive as they provide larger bandwidth and higher data rates than the today-used systems operating at frequencies below 6 GHz. In addition, according to the fact that coaxial cables exhibit extremely high attenuation for millimeter-wave RF signals, analog radio over fiber techniques (RoF) form a promising technology for delivering unaltered radio waveform to a remote antenna. This paper experimentally analyzes three types of RoF modulations, namely a directly modulated laser, an electro-absorption modulator, and a Mach-Zehnder Modulator. The primary focus is on the implementation of each RoF transmitter in an RoF system, such as those in 5G networks. The experimental study includes a detailed characterization of an RoF system with a 50-m long outdoor free-space RF channel operating in the frequency band of 25 GHz. Frequency response (S-parameters) and third-order nonlinear distortion are investigated in detail. Tests of EVM performance were conducted using an orthogonal frequency division multiplexing signal modulated with 16-quadrature amplitude modulation (16-QAM) with a long-term evolution signal. It is demonstrated that the transmitters studied can operate under a 13.5% EVM limit given for 16-QAM. Apart from the detailed system performance, the considerable power fluctuations in the 25 GHz free-space RF outdoor channel are reported.

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Section: Introductionmentioning

confidence: 99%