Application of an Opto-Electronic Oscillator in 5G Mobile and Wireless Networks with a Low Frequency Drift, a High Side-Modes-Suppression Ratio and without a Power Penalty due to Chromatic Dispersion

Abstract

This paper describes and discusses the practical application of an opto-electronic oscillator for the next generation of 5G mobile and wireless networks based on millimeterwave technology. The application of a single-loop, opto-electronic oscillator is designed for 39 GHz and will be implemented in the central-station of an upcoming 5G mobile and wireless network. The aim of this configuration is to decrease the complexity of the base-stations for a next-generation system and provide an economic advantage for upcoming 5G networks. The system is designed to avoid the power penalty due to the chromatic dispersion, is temperature stabilized to have a long-term stability and has a low side-modes effect to ensure a low phase noise.

Assessment of Different Channel Equalization Algorithms for a Converged OFDM-Based 5G mm-wave A-RoF System at 60 GHz

“…RoF system for mm-wave generation Required costly hardware [10,12] A dispersion compensation and dispersion shifted fiber is used Easy to use Old method and costly fiber [11] Use field programming gate arrays (FPGAs) to restore the transmitted signal V band/W band OFDM RoF system Required costly and more power hungry hardware [13] 25 GHz mm-wave over SSMF system using OFDM which uses a dual wavelength source The paper is organized as follows. In Section 2, a complete converged 5G mm-wave A-RoF multicarrier OFDM digital communication system is explained.…”

“…A dispersion compensation fiber (DCF) to eliminate dispersion in an unlicensed band RoF channel with a 40 Gb/s data rate employing Quadrature Phase Shift Keying (QPSK) modulation in OFDM was proposed in [10], while in [11] the authors proposed a V-band mm-wave frequency of 57-66 GHz using field programming gate arrays (FPGAs) to restore the transmitted signal in a converged OFDM-RoF real-time reception system. A dispersion-shifted fiber (DSF) was used in [12], but this approach is not suitable with 5G standards. Another approach is to use a 1310 nm instead of a 1550 nm wavelength lasing frequency because of its near-zero chromatic dispersion value, but it has higher optical loss.…”

Opto-Electronic Oscillators for Micro- and Millimeter Wave Signal Generation

“…One example of this is terahertz (THz) photonic signal generation using an OEO [47][48][49]. Another possible application of an OEO is to use it as a local oscillator (LO) in the central office of a 5G radio access network (RAN) [50][51][52]. The single-loop OEO can be combined with an optical fiber path selector to measure the free spectral range (FSR) and side-mode suppression ratio (SMSR) of the OEO for different lengths of the optical delay line [53].…”

An opto‐electronic oscillator based on Fabry‐Perot stabilized dual‐wavelength fiber ring laser

“…With such high phase stability, the latency of a 5G network can be significantly reduced. 6,7 In this paper, we employ a specially designed fiber-Bragg-grating-based Fabry-Perot filter (FBG-FPF) inserted in a dual-wavelength fiber ring laser (DWFRL) to generate low phase-noise microwaves in the X-band. This is accomplished in a ring topology, where an erbium-doped fiber amplifier (EDFA) act as a broadband light source while a second optical amplifier works as a gain media.…”

“…An alternative solution is to place a single OEO in a temperature‐controlled environment at a central‐station and transmit the high purity carrier to every base‐station, such that they all receive the same signal, which and can be used for synchronization between different nodes and as a LO for in‐phase up and down conversion. With such high phase stability, the latency of a 5G network can be significantly reduced 6,7 …”