Terahertz Wireless Access Technologies to Deliver Optical Network Quality of Experience in Systems Beyond 5G - TERAPOD
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This project has received funding from the European
Union's Horizon 2020 research and innovation
programme under grant agreement No 761794
Terahertz Wireless Access Technologies
to Deliver Optical Network Quality of Experience
in Systems Beyond 5G
Angeliki Alexiou
alexiou@unipi.gr
“Towards Terahertz Communications” Workshop,
7 March 2018, EC, Brussels
© The TERRANOVA consortium 2017-2019
A Vision for Systems beyond 5G
Systems Beyond 5G - expectations:
• Unprecedented performance excellence, in the Tbps
regime
• Inherently support a large dynamic range of novel usage
scenarios that combine extreme data rates with agility,
reliability, zero response time and AI
• Cost-efficient and flexible provision of high-speed data
connections guaranteed, zeroing the ‘digital divide’
Vision:
• Extend the fibre optic systems QoE and performance
reliability to wireless, by exploiting frequencies above
275GHz for access and backhaul links
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© The TERRANOVA consortium 2017-2019
THz unique challenges
• Bridge the THz ‘gap’
• Tackle the THz propagation characteristics
• Ultra wideband and extremely directional wireless links
• Absorption Loss
• Attenuation with distance
• Devise a new network information theoretic framework
imposed by the new disruptive characteristics of the
channel
• Design MAC protocols tailored to ‘pencil-beam’ access:
challenging initial access/discovery and tracking w.r.t.
complexity/delay/reliability/..
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© The TERRANOVA consortium 2017-2019
TERRANOVA System Concept
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© The TERRANOVA consortium 2017-2019
TERRANOVA Vision and Objectives
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© The TERRANOVA consortium 2017-2019
TERRANOVA building blocks
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© The TERRANOVA consortium 2017-2019
TERRANOVA building blocks (2)
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© The TERRANOVA consortium 2017-2019
Application Scenarios Use case Scenario Use case basic
and Use Cases requirement
Data Rate: 1 Tb/s
Fibre extender 1
Range: ~1 km
Data Rate: 1 Tb/s
P2P 1
Distance < 1 km
Data Rate: ~0.1 Tb/s
Redundancy 1
Availability:~99.999%
Corporate backup Data Rate: 0.1 Tb/s
1
connection Range: ~1 km
Data Rate: 0.1 Tb/s
IoT dense
2 and 3 Latency< 1 ms
environment
Reliability: App. depend.
Data Rate: 0.2 Tbps
Data centres 2
Range < 100 m
Short range THz Data Rate: up to 0.3 Tbps
2 and 3
access indoors Range < 20 m
Data Rate: 0.1 Tbps
Ad-hoc access 2 and 3 Range ~ 500 m
Installation time < 1 hour
Sport , music Data Rate: 0.2 Tbps
2
a) Point-to-point, events, etc. Range ~ 500 m
b) Point-to-multi-point and Data Rate: 0.1 Tb/s
Last mile access 2
c) Indoor quasi-omnidirectional Range: ~1 km
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© The TERRANOVA consortium 2017-2019
Design Principles
THz Channel Modelling*
*Alexandros-Apostolos A. Boulogeorgos, Angeliki Alexiou, Thomas Merkle, Colja Schubert, Robert Elschner, Alexandros Katsiotis, Panagiotis Stavrianos,
Dimitrios Kritharidis, Panteleimon-Konstantinos Chartsias, Joonas Kokkoniemi, Markku Juntti, Janne Lehtomaki, Antonio Teixeira, and Francisco Rodrigues,
“Terahertz Technologies to Deliver Optical Network Quality of Experience in Wireless, Systems Beyond 5G, to appear in IEEE Communications Magazine, 2018 9
© The TERRANOVA consortium 2017-2019
Design Principles
Fundamental Performance Evaluation in 275−400 GHz*
SNR and capacity depend on: Assumptions and considerations
•Assume flat transmission PSD, S(f)=So
• transmission central frequency;
•g=100 dB
• transmission power allocation; •B=125 GHz
•Standard atmospheric conditions
• antenna gains;
• distance between the TX and RX;
• transmission bandwidth; and
• atmospheric conditions *Alexandros-Apostolos A. Boulogeorgos, Evangelos N. Papasotiriou, Joonas Kokkoniemi,
Janne Lehtomaki, Angeliki Alexiou, and Markku Juntti, “Performance Evaluation of THz
Wireless Systems Operating in 275−400 GHz Band ”, to be presented at VTC Spring 2018 10
© The TERRANOVA consortium 2017-2019A distance and bandwidth dependent adaptive
modulation scheme for THz communications*
• For a given γ,
As the transmission distance
increases, the used bandwidth will
be constrained.
• For a given d,
As γ increases, the available
bandwidth also increases.
Frequency selectivity tolerance
• For given Pb and γ,
As the distance increases, the
achievable rate decreases.
• For given Pb and d,
As γ increases, the achievable rate
increases.
*Alexandros-Apostolos A. Boulogeorgos, Evangelos N. Papasotiriou, Angeliki Alexiou,
“A distance and bandwidth dependent adaptive modulation scheme for THz 11
© The TERRANOVA consortium 2017-2019 communications”, submitted to SPAWC 2018MAC and RRM
Beam-Space Access
• Critical parameters: Beamwidth, number of beamspace channels, • Step 1: Synchronization and Signal
number of pilots, distance, mobility Detection
• Important metrics/challenges: detection probability, space • Step 2: Random Access Preamble Tx
synchronization (misalignment)
• Step 3: RA response (RAR)
• Step 4: Connection Request
© The TERRANOVA consortium 2017-2019 • Step 5: Scheduled Communication 12Expected results/innovations
• Realistic THz channel model based on experimental measurements
• THz-oriented information theoretic framework for link-level and network-level
• Pencil-beam antenna arrays design and device tracking methods
• THz-driven hybrid MAC layer protocols, device discovery algorithms and caching
• Highly adaptable framework for overall optimal resource management
• Baseband digital signal processing to allow frontend correction and impairment
mitigation in combined optical-wireless Terabit transmission links
• Cost- and energy-efficient optical RF-frontend for optical to THz interfacing, based on
state-of-the art low complexity optical transponders
• Baseband digital signal processing to enable THz transmission with higher-order
modulation formats and optimized coding to maximize the spectral efficiency
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© The TERRANOVA consortium 2017-2019TERRANOVA consortium
Project duration: July 2017-December 2019
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© The TERRANOVA consortium 2017-2019More info – upcoming events
VTC2018-Spring, 3-6 June 2018, Porto, Portugal
International Workshop on
THz Communication Technologies
for Systems Beyond 5G (W11)
5 JUNE 2018, 14.00-17.30
[organized by TERRANOVA,
featuring invited talks by industry leaders
and technical papers reporting
most recent research results]
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© The TERRANOVA consortium 2017-2019More info – references
• Alexandros-Apostolos A. Boulogeorgos, Angeliki Alexiou, Thomas Merkle, Colja Schubert, Robert Elschner,
Alexandros Katsiotis, Panagiotis Stavrianos, Dimitrios Kritharidis, Panteleimon-Konstantinos Chartsias,
Joonas Kokkoniemi, Markku Juntti, Janne Lehtomaki, Antonio Teixeira, and Francisco Rodrigues,
“Terahertz Technologies to Deliver Optical Network Quality of Experience in Wireless, Systems Beyond
5G, to appear in IEEE Communications Magazine, 2018
• Alexandros-Apostolos A. Boulogeorgos, Joonas Kokkoniemi, Evangelos N. Papasotiriou, Janne Lehtomaki,
Angeliki Alexiou, and Markku Juntti, “A new look to 275-400 GHz band: Channel model and performance
evaluation”, submitted to EUCNC 2018
• Alexandros-Apostolos A. Boulogeorgos, Evangelos N. Papasotiriou, Joonas Kokkoniemi, Janne Lehtomaki,
Angeliki Alexiou, and Markku Juntti, “Performance Evaluation of THz Wireless Systems Operating in
275−400 GHz Band ”, to be presented at VTC Spring 2018
• Alexandros-Apostolos A. Boulogeorgos, Evangelos N. Papasotiriou, Angeliki Alexiou, “A distance and
bandwidth dependent adaptive modulation scheme for THz communications”, submitted to SPAWC 2018
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© The TERRANOVA consortium 2017-2019ict-terranova.eu
ACKNOWLEDGMENT
The presenter would like to thank all the colleagues of the project TERRANOVA for their contributions. This work has received funding from
the European Commission’s Horizon 2020 research and innovation programme under grant agreement No 761794.
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