radio technologies for 5g using advanced photonic ... technologies for 5g using advanced photonic...
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Radio Technologies for 5G Using Advanced Photonic Infrastructure
for Dense User Environments
Hiroshi MurataOsaka University, Japan
Andreas StöhrUniversity of Duisburg-Essen, Germany
6th Japan-EU Symposium on ICT Research and InnovationMakuhari Messe, 6-7 October 2016.
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Oct. 2014 ~ Sep. 2017 (3-years)
Photonic-Based 5G technology・MMW/MW heterogeneous cell・WDM-based C-RoF
Wireless resource controlBeam formingSDM/MIMO
・Field trials in stadium & mall
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5G
Participants of RAPID
European Participants
Japanese ParticipantsProf. Andreas StöhrUniv. Duisburg-Essen
Prof. Hiroshi MurataOsaka Univ.
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5G
RAPID’s Consortium at a Glance
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5G
Technical Topics in RAPID
MMW/Photonic device & sub-system60GHz radio transceiver with high SNR MMW signal Steerable 60GHz antenna technologies60GHz signal receiverPhotonic-based MMW signal generation/controlOptical-Electrical conversion/SNR analysis
System & Life-cycle testPhotonic-based MMW distribution networkMobile terminal localizationMMW experiments in fields
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60GHz radio transceiver with high SNR MMW signal
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5G
Schematic set-up for interfacing the transceiver with a WDM-PON network
DSO: digital sampling oscillator,AWG: Arbitrary waveform generator
AWG: Arrayed waveguide grating (for WDM MUX and DEMUX)
System architecture of RoF-based wireless link
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5G
Measured results
• IQ wireless data transmission was conducted achieving a spectral efficiency of:
1. ~ 9 bit/s/Hz (9.8 Gbit/s over 1 GHz signal bandwidth)2. 6 bit/s/Hz (21 Gbit/s over 3.5 GHz signal bandwidth)
Pow
er [d
Bm]
0 1 5 632 4
0
-20
-40
-120
-140
Frequency [GHz]
15
17
22
23
21
SNR
[dB]
16
Subcarrier50 100 150 200 250 300In phase
Qua
drat
ure
• 64 QAM signal achieving 6 bit/s/Hz in spectral efficiency• EVM = 11.57% which translates to a BER < 2 x 10-6
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5G
Measured results
AMP.: Amplifier , Ant.: Antenna, Attn.: Attenuation, AWG: Arbitrary waveform generator, BW= Bandwidth, CPX: Coherent Photonic mixer , LD: Distributed feedback Laser diode, LNA: Low noise amplifier, LPF: Low pass filter, PC: Polarization controller, SMF: Single mode fiber,
LD-1 MZM
Real Time Scope
AWG
PCLPF
BW=6.4 GHz
Vbias =3.2V
LNA @60 GHzBW=7 GHz, G= 34 dB
LPF BW=6.4 GHz
Attn.
SMF
LD-2
PC
CPX SBD
D=1m
User equipment (UE)
Radio access unit (RAU)
Central station(CS)
Attn. Attn.LNA @60 GHzBW=20GHz, G= 34 dB
LPF, BW=6.4 GHz
AMP,BW=18 GHz G=28 dB
AMP,BW=18 GHz G=28 dB
Ant. Ant.
= +8.2 dBM= 1550.49nm
= 1550.00nm= +10.0 dBM
64 QAM1024 QAM
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Steerable 60 GHz antenna technologies
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5G
Beam-forming using an array-antenna based EO modulator
Direct EO conversion on antenna
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5G
60-GHz band beam-forming using an EO modulator
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5G
Beam steering SIW leaky-wave antenna
Direct feed from PD
Compact and low cost PCB based antenna structure
High directivity and beam steering experimentally
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5G
Lens assisted beam switching RFIC
Main RFIC
32 radiating elements Secondary RFIC for testing
Dimensions: 20mm x 40mm
mm-wave lens
LTCC with radiating elements
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5G
Lens assisted beam switching RFIC
Radiating elements
array
Focal plane
Dielectric lens
Focal axis
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Photonic-based MMW signal generation/control
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5G
60 GHz signal generation using photonic two-tone
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5G
MMW data transmission experiment using array-antenna electrode EO modulator
PC: Polarization ControllerEDFA: Erbium Doped Fiber AmplifierPD: PhotodiodeSA: Spectrum Analyzer
OBPF: Optical Bandpass FilterLD: Laser DiodeSG: Signal GeneratorLNM: LiNbO3 Modulator
(A)
(C)
(B)
QPSK signal: SR~500 MHz
~GHz
~60GHz
~30GHz
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5G
Constellation diagram of transmitted MMW signal
(C) Transmitted 60GHz-band signal (after LW-MMW signal reconversion)
(B) 60GHz signal from PD with optical 2-tone input
EVM: 6.0%
Symbol Rate: 250 MHz
Frequency : 58 GHz
EVM: 15.8%
Symbol Rate: 250 MHz
Frequency : 58 GHz
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Terminal Localization
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5G
Processing of radio signal in optical domain
• Mobile terminal location using time domain difference of arrival (TDOA) method
• Method estimates distance using hyperbolic curve calculation
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5G
Processing of radio signal in optical domain
• Using a distributed antenna system has following advantages:− Distribution loss is low− TDOA measurement accuracy is very high− Position of mobile terminal can be calculated before handshake
• Simulation of position error distribution is shown below• Here 4 RAUs were used having a distance of 30m
RAU1
RAU2 RAU3
RAU4
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Preparation for demonstration in dense user environments
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5G
1st Demonstration at GAMBA OSAKA stadium
Friendship agreement between Osaka University and GAMBA Osaka football company realizes our 1st demonstration at densely environment
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5G
Experimental set-up
RF
BB
MMW transceiver & controller
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5G
Transceiver installed at cat-walk
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5G
Looking down on the seat from the cat-walk
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5G
Transceiver and spectrum analyzer
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5G
Transceiver Set-up at Cat-walk of Stadium
User down-link experience:> 800Mbps
RF PC BB
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5G
Signal intensity distribution at Stadium seat
Contour Plot 3D Contour Plot
Relatively less signal intensity was observed at lower seat
Antenna profile and seat configurationaffect signal intensity
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5G
Dense area with low mobility – shopping districts
Finalization of testbed (mall) selection Stary Browar (Poznań)
Blue City (Warszawa)
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5G
Conclusion
RAPID for centralized 5G radio access network Fusion of advanced photonic & MMW technologies MMIC / Beam forming / E-O&O-E conversion MMW wireless front-end
WDM C-RoF based heterogeneous network
11 EU & Japan partners Developing key technologies with good collaboration
Field trials Big football stadium => Olympic/Paralympic games Shopping center Aircraft, Train etc.
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www.rapid-5g.eu www.rapid-5g.jp
Thank you for your kind attention.