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. 2016 Jan 27:6:19891.
doi: 10.1038/srep19891.

Towards 5G: A Photonic Based Millimeter Wave Signal Generation for Applying in 5G Access Fronthaul

S E Alavi  1 , M R K Soltanian  2 , I S Amiri  2 , M Khalily  3 , A S M Supa'at  1 , H Ahmad  2
Affiliations

Towards 5G: A Photonic Based Millimeter Wave Signal Generation for Applying in 5G Access Fronthaul

S E Alavi et al. Sci Rep. .

Erratum in

Abstract

5G communications require a multi Gb/s data transmission in its small cells. For this purpose millimeter wave (mm-wave) RF signals are the best solutions to be utilized for high speed data transmission. Generation of these high frequency RF signals is challenging in electrical domain therefore photonic generation of these signals is more studied. In this work, a photonic based simple and robust method for generating millimeter waves applicable in 5G access fronthaul is presented. Besides generating of the mm-wave signal in the 60 GHz frequency band the radio over fiber (RoF) system for transmission of orthogonal frequency division multiplexing (OFDM) with 5 GHz bandwidth is presented. For the purpose of wireless transmission for 5G application the required antenna is designed and developed. The total system performance in one small cell was studied and the error vector magnitude (EVM) of the system was evaluated.

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Figures

Figure 1
Figure 1. Next-generation converged optical-wireless access networks in 5G (drawn by authors, SE Alavi and IS Amiri).
Figure 2
Figure 2. Experimental setup to generate stable dual-wavelength fiber laser.
Figure 3
Figure 3
(a) Optical spectrum of DWFL lasing at wavelengths 1546.96 nm and 1547.48 nm and (b) the stability of achieved DWFL over 160 minutes with the interval scan of every 10 minutes.
Figure 4
Figure 4
(a) The beating frequency of 65.12 GHz in the RFSA, (b) the stability of generated RF over 160 minutes with the scan interval of 10 minutes and (c) power and frequency fluctuation of the generated RF as a function of time recorded in 160 minutes and (d) 320 ms in the scan interval of every 20 ms.
Figure 5
Figure 5. Schematic of the proposed antenna.
Figure 6
Figure 6
(a) Measured |S11| of the proposed antenna for 5G application (b) E-plane & (c) H-plane radiation patterns of the proposed antenna at 60 GHz.
Figure 7
Figure 7. System setup.
Figure 8
Figure 8. Wireless RF signal generation for 5G.
Figure 9
Figure 9. EVM performance and constellation diagram related to different optical link lengths and 6 m wireless link.
Figure 10
Figure 10
(a) EVM performance for different wireless link distances, (b) eye diagrams for 2 meters wireless distance, (c) eye diagrams for 5 meters wireless distance.
See this image and copyright information in PMC

References

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