MTTW'21

In this talk, I will summarize the recently discovered opportunities of geodesic lenses for producing high-performing antennas for 5G/6G and satellite communications. First, I will explain the operation of geodesic lenses based on Geometrical Optics with rays that are following ``the shortest optical path'' in the geodesic surface. Also, I will explain the connection between geodesic lenses and rotationally symmetric graded-index lenses. Generally, geodesic lenses can be implemented without the need of dielectric materials, resulting in very efficient devices constructed with fully-metallic configurations. When combined with a feeding network and a radiating transition, such as a flare or a leaky-wave, they can produce a multiple-beam lens antenna. Prototypes of these antennas have been recently tested to demonstrate the remarkable performance of geodesic lenses in the Ka-band, part of which is considered for 5G and communications with the new LEO constellations. At high operational frequencies allocated for 5G/6G and radars in vehicles, geodesic lenses offer an opportunity to produce cost-effective antenna solutions with high directivity, high efficiency and spatial diversity through multiple beams.

We give a general description of the mathematical background and a resume of the results about existence and distribution of the spectra of running waves in open and shielded waveguides, including: open and shielded metal-dielectric waveguides with arbitrary cylindrical inhomogeneities and open layered concentric dielectric waveguides of circular cross section and metal--dielectric waveguides (Goubau lines) having layered dielectric covers filled with linear or nonlinear media. The newly obtained results are reported concerning singularities (resonant states) of the transmission coefficient in the problems of the wave scattering by parallel-plate dielectric slabs in a waveguide and free space. The findings are based on recent advances in the spectral theory of open structures.

Fiber optical sensor networks gain interest in the new research area of structural health monitoring (SHM). Different market analysts estimate the market growth (2020 to 2027) in the fields of SHM, Distributed Fiber Optic Sensors or Fiber-Bragg gratings from a compound annual growth rate (CAGR) of 8.4 % up to 25.4 %. It shows the clear necessity of such systems on the market. Fiber optical sensor networks are suitable for fatigue crack detection, internal strain monitoring or temperature surveillance of a whole structure, such as bridges, tunnels, roads, buildings, pipelines, etc. Distributed sensing and quasi-distributed sensing bring their inherit advantages such as immunity to electro-magnetic interference, low weight, small size, or their multiplexing capability to SHM systems. In distributed sensing, the optical fiber itself is used as the sensing element. It allows a continuous measurement of several fiber kilometers. Quasi-distributed sensing is based on Bragg-gratings that are inscribed into the optical fiber. Different multiplexing techniques, known from communication systems, are used to distinguish several thousands of serial sensing points. The presentation addresses the questions: How to interrogate large fiber optical sensor networks? Where to apply these networks in SHM?

15:30

Paper presentations

Duration of one presentation is 10 minutes + 5 minutes for the questions.

IoT, Sensor and other Networks

on-line

, passcode:936569

Antennas

on-line

, passcode:511272

Signal processing for communications

on-line

, passcode:138041

A2: IoT, Sensor and other Networks

on-line

,passcode:936569

Chairs: Modris Greitans, Anna Litvinenko

Blocking Probabilities in a Mobility-Aware CAC Algorithm of a Vehicular WiFi Network , I. Keramidi, I. Moscholios, P. Sarigiannidis, M. Logothetis

Adaptive Technique for LoRa Communication with LEO Nanosatellite , J. Vandavasi Karunamurthy, S. Bendoukha, I. Nikolakakos, T. Ghaoud, F. Ebisi, M. Alkharrat

Multi-Purpose Medical Drone for the Use in Pandemic Situation , G. Ganesan, M. Mokayef

Deep Neural Network-Based Method for Detection and Classification of the Malicious Network Traffic , M. Usman, S. Ahmad, M. Saeed

A Deep Reinforcement Learning Approach for LoRaWAN Energy Optimization , Y. Yazid, I. Ez-zazi, M. Arioua, A. El Oualkadi

Performance of Energy Harvesting Full-Duplex Amplify-And-Forward Relay Network with TAS/MRC , H. Balaban, O. Kucur

Investigating Efficient Municipal Solid Waste Collection Through Technology , S. Squire, S. Rehman, M. Khan

Verification of Consistency Between Ethernet Based QoS with Performance Prediction of Heterogeneous Microwave Radio-Relay Backhaul Network , S. Zlatar, A. Lipovac, V. Lipovac

B2: Antennas

on-line

,passcode:511272

Chairs: Andrius Katkevičius, Roman Kushnin

Range-Angle Dependent Radiation by Using Non-Uniform Period Time Modulated Arrays , I. Kanbaz, U. Yeşilyurt, E. Aksoy

Triangular Aperture UWB Antenna with Dual Band-Notched Characteristic for WLAN Bands , A. Toktas

GPR Application with Different Antennas for Road Pavement Condition Assessment , D. Batrakov, M. Antyufeyeva, A. Batrakova

A Reconfigurable Antenna in Frequency Band and Radiation Using Active Frequency Selective Surfaces on the Basis of PIN Diodes , B. Mekimah, T. Djerafi, A. Messai, A. Belhedri

Geometry Aided Deterministic Synthesis Approach for Concentric Ring Sparse Array Antennas , A. Kedar

New Design Rules to Improve Helical Antenna Performance , O. Abu Ella

Design of a Compact SWB High Gain Antenna Using a Fully PEC Reflector , M. Belazzoug, K. Khodja, E. Ksouri, R. Rebbah, I. Messaoudene, Y. Braham Chaouche, B. Hammache, T. Denidni

Study of 140 GHz Waveguide Fed Lenses with Different Dielectric Constant , C. Gu, L. Bai

Design and Performance Analysis of a Dual Stub MIMO Antenna for On-Body Applications , F. Mahbub, R. Islam, M. Ali, M. Rahman

C2: Signal processing for communications

on-line

,passcode:138041

Chairs: Arturs Aboltins, Shahriar Shirvani Moghaddam

An Investigation for Imperfect CSI Effects on Half-Duplex/Full-Duplex Relaying Network , V. Ozduran

Data Processing for Analysis of Deteriorating Radio System with Redundancy , M. Zaliskyi, O. Solomentsev, O. Zuiev, M. Pavlenko, I. Zakharchenko, Y. Petrova

Fast Algorithms for Generating Real-Valued Spreading Sequences for High-Speed Wireless Communication Systems Based on PSSS , L. Lopacinski, N. Maletic, A. Hasani, J. Gutiérrez, E. Grass

Empirical Bayesian Method in the Problem of a Harmonic Signal Detecting in the Gaussian Noise , I. Prokopenko, I. Omelchuk, Y. Petrova, O. Omelchuk

Multi-Target Vital Signs Remote Monitoring Using mmWave FMCW Radar , Y. Zhao, V. Sark, M. Krstic, E. Grass

Performance Comparison of cGAN Models for Channel Estimation in One-Bit Massive MIMO System , J. Yadav, V. Dwivedi, S. Chaturvedi

Human Activity Classification via Millimeter-Wave Channel Level Crossing Estimation , R. Marsalek, R. Zavorka, M. Pospíšil, J. Vychodil, J. Gotthans, J. Blumenstein

Minimizing Collision of Fading Channel Using Machine Learning , M. ALhaddad, S. Sati, M. Elmusrati

Role	Name of the organization	Country	Acronym
Financial sponsor	IEEE Latvia Section Communications, Microwave Theory and Techniques, and Antennas and Propagation Joint Societies Chapter	Latvia	IEEE
Supporter	Riga Technical University	Latvia	RTU
Supporter	IEEE Latvia section	Latvia	IEEE
Supporter	Ventspils International Radio Astronomy Centre	Latvia	VIRAC
Supporter	Vilnius Gediminas Technical University	Lithuania	VGTU
Supporter	University of Applied Sciences Lübeck	Germany	FHL
Supporter	Tallinn University of Technology	Estonia	TUT
Supporter	Hochschule Wismar, University of Applied Sciences, Technology, Business and Design	Germany	HW

Role

Name of the organization

Country

Acronym

Financial sponsor

IEEE Latvia Section Communications, Microwave Theory and Techniques, and Antennas and Propagation Joint Societies Chapter

Latvia

IEEE

Supporter

Riga Technical University

Latvia

RTU

Supporter

IEEE Latvia section

Latvia

IEEE

Supporter

Ventspils International Radio Astronomy Centre

Latvia

VIRAC

Supporter

Vilnius Gediminas Technical University

Lithuania

VGTU

Supporter

University of Applied Sciences Lübeck

Germany

FHL

Supporter

Tallinn University of Technology

Estonia

TUT

Supporter

Hochschule Wismar, University of Applied Sciences, Technology, Business and Design

Germany

2021-10-08

Best Paper Awards

IN SESSION "IN-PERSON PRESENTATIONS" to Romans Maliks for paper "Integrated Circuit of Clocked Comparator for Ultra-Wideband Radar" Romans Maliks, Gatis Supols, Modris Greitans, Eduards Lobanovs

IN SESSION "BEYOND 5G TECHNOLOGIES" to Erfeng Li for paper "A 5.8GHz Slot Antenna with Parallel Slit Loading for 5G Conformal and Wearable Applications" Erfeng Li, Xue Jun Li, Boon-Chong Seet

IN SESSION "MICROWAVE ELECTRONICS" to Vaiva Rusen for paper "Investigation of the Multilayer Semiconductor Waveguides in Sub-THz Range" Vaiva Rusen, Andrius Katkevičius, Darius Plonis

IN SESSION "OPTICAL COMMUNICATION AND PHOTONICS" to Jasmeet Singh for paper "Geometric Constellation Shaping with Pulse Amplitude Modulation in Short Reach Optical Links" Jasmeet Singh, André Sandmann, Andreas Ahrens, Steffen Lochmann, Cesar Benavente Peces

IN SESSION "IOT, SENSOR AND OTHER NETWORKS" to Vlatko Lipovac for paper "Verification of Consistency Between Ethernet Based QoS with Performance Prediction of Heterogeneous Microwave Radio-Relay Backhaul Network" Sladan Zlatar, Adriana Lipovac, Vlatko Lipovac

IN SESSION "ANTENNAS" to Dmitry Batrakov for paper "GPR Application with Different Antennas for Road Pavement Condition Assessment" Dmitry Batrakov, Mariya Antyufeyeva, Angelika Batrakova

IN SESSION "SIGNAL PROCESSING FOR COMMUNICATIONS" to Yanhua Zhao for paper "Multi-Target Vital Signs Remote Monitoring Using mmWave FMCW Radar" Yanhua Zhao, Vladica Sark, Milos Krstic, Eckhard Grass
2021-09-24

Presentation template

PowerPoint presentation template for the conference slides can be downloaded from http://mttw.org/doc/MTTW21_presentation_template.pptx
2021-09-23

Pre-conference roundtable

To facilitate quality and cooperation, all presenters are invited to participate in pre-conference online round-table on 4th October at 6:00AM GMT, which will also serve as technical readiness test. Each participant has to present one slide about their research group. Schedule and presentation template can be found on the roundtable page
2021-09-21

Information about conference

Due to restrictions caused by the COVID19 pandemic, many authors from foreign countries will not be able to attend the conference in person. To ensure the presentation of the accepted papers, the organizing committee of MTTW'21 decided to set all participants from the countries other than Latvia to the remote session on Friday, October 8.
2021-09-10

Review status

The reviews are almost due and most of the papers have sufficient number of the reviews. We thank reviewers for the hard work.
2021-09-02

Review status

54 papers have 1 completed review, 13 papers has sufficient number of reviews.
2021-08-06

Submission extended

Submission of papers has been extended until 23.08.2021
2020-10-03

Photos of MTTW'20

The photo gallery of MTTW'20 can be viewed by clicking on this link
2020-10-02

Best paper awards

IN SECTION “MICROWAVE THEORY AND TECHNIQUES” is presented to Nebojsa Maletic for the submission entitled “Performance Investigation of 2-GBaud QAMs Using Fully-Integrated SiGe Chipset at 240-GHz”
IN SECTION “WIRELESS COMMUNICATIONS” is presented to Aleksey Gvozdarev for the submission entitled “Correlation Matrix Bordering for Optimal Massive MIMO Power Allocation Algorithms”
IN SECTION “IN PERSON PRESENTATIONS” is presented to Deniss Kolosovs for the submission entitled “A Generalization of the Enhanced Decision Adjusted Modulus Algorithm for Blind Equalization of Constellations with Closely Positioned Circles”
2020-09-24

Full technical reddiness

All papers in the remote sessions have passed the technical readiness test. Therefore, rich online program is expected.
2020-09-15
Technical readiness testing
In order to facilitate quality, all remote presentations must undergo a short technical readiness test on 17.09.2020 at 9:00 AM (GMT) . List of remote participants is available from http://mttw.org/tt.html
- -For the conference and test the participant must have computer with fast internet connection, camera, microphone, first slide of presentation should be prepared.
- -All authors have to connect to ZOOM bridge with video and audio using following Zoom Meeting link
  Meeting ID: 972 3896 8569 Passcode: 856294
- -At 9:00 AM GMT the chair of MTTW'20 will salutate all test participants.
- -Then testing assistant will call authors, (by list from http://mttw.org/tt.html) each author say “Hello, Name, Surname, Name of the paper”, share the screen, show first presentation slide with paper title. Please use mute regime till testing assistant calls you.
- Then next author is called.
Papers which will fail to undergo technical readiness testing will be excluded from the conference program
2020-09-05

Final decision

Thanks to reviewers efforts the review was finished before deadline. 46 papers were accepted and 45 were rejected. Chart shows statistics of non-unique authors' countries.
2020-09-01

Review status

Thanks to hard work of reviewers, 81 paper already have sufficient number of reviews. Little effort and we will be able to select accepted papers.
2020-08-28

Review status

51 paper have sufficient number of reviews
2020-08-26

Review status

50 papers still have insufficient number of reviews
2020-08-25

Review status

Progress of the review
2020-08-23

Review status

Progress of the review
2020-08-21

Review status

Majority of papers are waiting for the review.
2020-08-09

Submission of papers has been proplonged

Submission of papers is prolonged until 16.08.2020
2019-10-02

Photo gallery

The photo gallery of MTTW'19 can be viewed by clicking on this link
2019-10-02

Video gallery

Videos of the invited speeches are available on the following page.
2019-10-01

Opening Presentation

The opening presentation of MTTW'19 co-chair Asoc.prof. Anna Litvinenko can be downloaded from here.
2019-09-04

Final decision

31 paper of 47 has been accepted. Full list of accepted papers can be downloaded from here
2019-08-27

Review progress

The review process has good progress. Part of papers already has got sufficient number of reviews. 1 week until end of review.
2019-08-20

Review phase

The paper submission is finished. In total 48 papers have been registered. The reviews must be done in extremely short period - within 2 weeks.
2019-08-06

Submission prolonged

Submission of papers is prolonged until 19.08.2019
2019-06-12

About Riga, Latvia

Riga is the capital and the largest city of Latvia. With 641,007 inhabitants (2015), Riga is the largest city of the Baltic states and home to one third of Latvia's population. The city lies at the Baltic Sea, on the Gulf of Riga, at the mouth of the Daugava. Riga was founded in 1201 by Hanseatic League. Riga's historical centre is a UNESCO World Heritage Site, noted for its Art Nouveau/Jugendstil architecture and 19th century wooden architecture. Riga hosted the 2006 NATO Summit, the Eurovision Song Contest 2003, and the 2006 IIHF Men's World Ice Hockey Championships. Riga is served by Riga International Airport, the largest airport in the Baltic states. More Details at Wikipedia page.

Paper submission due:	~~August 9~~ August 23, 2021
Notification to authors:	September 13, 2021
Camera ready due:	October 1, 2021

7 - 8 Oct 2021 Riga, Latvia

Registration

Thank you!

Call for papers

Wireless Communications

Microwave Theory and Techniques

Registration fee

Important dates

Instructions for the authors

Submission of the review version

Submission of the final version (accepted paper)

Copyright transfer

Formatting rules

Certification of the final version using PDF Express

Creating your PDF eXpress Account

Contacting PDF eXpress Support

Keynote and invited speakers

Andzej Borel

PhD researcher at Vilnius Gediminas Technical University

Yury Shestopalov

Professor at University of Gävle

Marek Götten

PhD Researcher at Technical Universtiy of Madrid and at the University of Applied Sciences Wismar

Agnis Stibe

Academic Program Director on Artificial Intelligence and Professor of Transformation at EM Normandie Business School

Shahriar Shirvani Moghaddam

Associate professor at Faculty of Electrical Engineering, Shahid Rajaee Teacher Training Univesity, Digital Communications Signal Processing Lab.

Oscar Quevedo-Teruel

Full professor, School of Electrical Engineering and Computer Science, KTH

Conference program

All times are in Europe/Riga timezone, 24h format

IEEE Day 2021 Opening

Key note talk

Coffee break

Key note talk

Invited Young Researcher

Lunch break

Paper presentations

1st day Best Paper Awards

MTTW21 2nd day opening

Key note talk

Key note talk (online)

Invited Young Researcher (online)

Lunch break

Paper presentations

Break

Paper presentations

2nd day Best Paper Awards, Best Reviewer award and Closing ceremony

Committee

Conference organizers

Steering Committee

Technical Programme Committee (TPC)

Venue

Geographical location

MTTW'21 Workshop Will Be Held At Faculty of Electronics and Telecommunications of Riga Technical University.

Visa information

Getting Here

By Car

Air Travel

By Bus

Hotels Nearby

Islande hotel

Hotel Vantis

Financial Sponsors

Supporters and patrons

News

Best Paper Awards

Presentation template

Pre-conference roundtable

Information about conference

Review status

Review status

Submission extended

Photos of MTTW'20

Best paper awards

Full technical reddiness

Technical readiness testing

Final decision

Review status

Review status