Radio-over-Fiber (RoF) Networks

Mitchell, John E.

doi:10.1007/978-0-387-92131-0_13

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…Furthermore, recently IR-UWBoF-IM/DD systems have been successfully integrated into Wavelength Division Multiplexing (WDM)-Passive Optical Networks (PONs), demonstrating their applicability for next-generation optical networks [33,38,[41][42][43]47,51]. Considering the latter, the system proposed in this work uses a Radio over Fiber (RoF) architecture based on the IM/DD technique to transmit optical UWB signals [54].…”

Section: Methodsmentioning

confidence: 99%

“…where x in−opt (t) is the optical signal generated by the E/O-EIM module; V RF (t) is the electrical signal provided by the IR-UWB transmitter; P out−laser (t) is the optical power of a CW Laser; and V π (t) is the half-wave voltage of the MZM transfer function. This V π (t) induces a 180 • phase change of the optical beam traveling in one arm of MZM [54][55][56]. It is well known that a sine transfer function can present high or low nonlinearity dependent on the operation voltage.…”

Section: Optical Transmitter Modelmentioning

confidence: 99%

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Design of Optical-Wireless IR-UWBoF Systems with Spectral Line Suppression Capabilities

et al. 2022

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Impulse-Radio Ultra-Wide Band (IR-UWB) over Fiber (IR-UWBoF) has been proposed to interconnect IR-UWB-based deployments separated by hundreds of meters or even kilometers. IR-UWB transmissions must comply with spectral masks provided by radio spectrum regulatory agencies. The maximum transmit power of an IR-UWB signal is adversely affected by the presence of spectral lines in its Power Spectral Density (PSD). Thus, it is desirable that the PSD of signals generated by IR-UWBoF systems does not show spectral lines. Previous works have shown the feasibility of deploying of optical-wireless IR-UWBoF systems. However, most of these proposals report PSDs showing spectral lines. To the best of our knowledge, spectral line suppression has not been previously studied for optical-wireless IR-UWBoF systems. This work shows the design and implementation of optical-wireless IR-UWBoF systems generating signals with Spectral Line-Free (SLF) PSDs. The proposal considers the use the use of a specifically designed convolutional code combined with Binary Phase Shift Keying (BPSK) or Quaternary Biorthogonal Pulse Position Modulation (Q-BOPPM) to provide a SLF PSD in IR-UWBoF systems. A testbed consisting of 30 km of single-mode optical fiber (SMF) concatenated to a 20 cm wireless link was physically implemented. The results show that a SLF PSD is achieved for both the optical and the wireless transmissions, even when the binary data source feeding the system is not perfectly random.

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