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A tandem dual electrode Mach Zehnder modulator (DE-MZM) generated W-band optical code division multiple access (OCDMA) radio-over-fiber (ROF) system is proposed and the simulation results are presented. We have investigated a method to upconvert a baseband laser signal to the millimeter wave band (W-band in this case) by utilizing two cascaded DE-MZMs driven by lower frequency sine-wave generators...
Next-generation access networks (NGANs) mainly include wavelength division multiplexing (WDM) based 60GHz Radio over Fibre systems (60G-RoF) and WDM Passive Optical Networks (WDM-PONs). Semiconductor optical amplifier may be the key device of colorless unit in these WDM based systems. The device can be effectively utilized as external modulator because it can perform simultaneously amplification and...
In 5G wireless systems, centralized RAN (C-RAN) is an architectural choice where the signal waveforms received by Remote Radio Heads (RRH) are transparently forwarded to base band units (BBU), in many cases using an optical fronthaul. Although C-RAN highly simplifies the RRH, which is positive from the operational cost standpoint, much of the system complexity and cost is shifted towards the optical...
This paper presents a novel highly spectral efficient 5G offset-QAM Orthogonal Frequency Division Multiplexing (OQAM-OFDM) Radio over Fibre (RoF) systems for small cell RANs at 28 GHz. The wide bandwidth photodiode at the remote radio head (RRH) is used for remote heterodyning centralized optical local oscillator (LO) and the downstream optical single sideband (OSSB) signal to generate the millimeter...
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