IEEE BlackSeaCom 2015
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Thursday, 21 May 2015, 9:00 – 11:00
Chair: Tetiana Pidhurska, Alexander Trubin (NTUU "KPI", Ukraine)

Stealth Apps for Secure Distributed Analytics
Josef Spillner (Technische Universität Dresden, Germany)

Abstract: Body Informatics is a new connected computing trend driven by the ubiquitous presence of sensing mobile devices and cloud services. Participants collect body, health and sports metrics and submit them to analytics portals. This makes them vulnerable to tracking, wiretapping and loss of valuable records. Stealth applications present an alternative distributed software architecture paradigm which mitigates many of the risks. The demo shows a local stealth fitness app connected to two untrusted clouds.

Dual-band rectangular dielectric resonator filter
Tetiana Pidhurska, Alexander Trubin (NTUU "KPI", Ukraine)

Abstract: Multi-band filter are strongly desired for the front-ends in satellite communications rather than combining several individual filters into one common circuit resulting in more volume, mass, and, eventually, higher insertion losses. Dual-band filters based on dielectric resonators (DR) are usually narrow-band with low in-band losses and good isolation between two bands.

The presented device is the laboratory model of 5.462/5.992 GHz dual-band band-pass filter on dielectric resonators, used for experimental measurements. It consists of two elongated rectangular shaped dielectric resonators, planar located in metal cavity with two oppositely directed metal pins, connected to the coaxial lines that are used as feeding. Proposed dual-band filter functionates in two adjacent modes of rectangular DR, namely TE01δ and TE02δ. The filter's operating frequency is defined by a resonator size and dielectric material’s properties.

The technical result of the novel construction of dual-band filter includes: high selectivity, good isolation between bands, no additional coupling elements or complication of DR shape.

IEEE 802.11ac RX testbed
Oleksandr Mazurenko (NTUU "KPI", Ukraine)

Abstract: Testbed demonstrate realization of IEEE 802.11ac receiver that is bazed on USRP2+MATLAB DSP. Demo is relevant to Mobile and Wireless Communications area.

Highly Resistant Military Wireless Communication Radio Interface
Oleksandr Mazurenko (NTUU "KPI", Ukraine)

Abstract: Testbed demonstrate realization of DSSS radio interface for military communication purposes. Radio interface provide high throughput without outer synchronization channel under SNR < 0 dB condition. Testbed is realized on USRP2+MATLAB DSP. Demo is relevant to Mobile and Wireless Communications area.

A radio signal wavefront curvature phenomenon application for frequency resource reuse of digital microwave link
Gleb Avdeyenko (Institute of telecommunication systems of National Technical university of Ukraine “Kyiv Polytechnic Institute”, Ukraine)

Abstract: The idea of using the radio signal wavefront curvature physical phenomenon as a new distinctive feature for separation from each other several radio signals which simultaneously occupy the same radio band of the same digital microwave link is proposed.

Proposed the idea of using a physical phenomenon wavefront curvature radio as a new distinctive feature for reuse several radiostvolami digital microwave link to the same radio frequency band.

The block diagram of a digital microwave link which performs spatial processing with usage of radio signal wavefront curvature are developed. A theoretical assessment of the effectiveness of spatial processing with usage of the radio signal wavefront curvature in digital microwave link are shown.

An experimental layout of simplex two radio groups digital microwave link of 10.6 GHz band with elements of spatial signal processing is developed. The layout research results confirm the possibility of practical application of radio signal wavefront curvature physical phenomena for re-use of radio frequency resource of digital microwave link.

The results can be useful for developers of digital microwave transmission equipment of the new generation.

Method and Test Environment for Validation of Long Term Evolution Random Access Channel using Radio over Fiber
Ricardo Toguchi Caldeira (CPqD, Brazil)

Abstract: Field tests are cumbersome in that they often require a number of resources, such as human, equipment and materials. Moreover, the presence of interfering signals, dependency of weather conditions, among other external factors that cannot be controlled by the experimenter impact reproducibility, repeatability, and increase execution time as compared with laboratory tests. This demo presents a laboratory method that uses Radio over Fiber (RoF) technology for validating the Physical Random Access Channel (PRACH) of Long Term Evolution (LTE) systems. Results obtained using a laboratory test setup implementing the proposed RoF-based method are benchmarked against field results. It turns out that the proposed method yields to a significative reduction in both test execution time and cost. Despite allowing for increased flexibility in terms of test scenarios, thus having a positive impact during product development phases, it is not the intent of the proposed method to fully replace field tests. In fact, it assists in the planning of the field tests, which can be reduced in scope (i.e. field tests will be necessary only to confirm the results obtained in the laboratory).

“Lubid calc”Satellite broadcasting &VSAT network planning
Kolomytsev Maksim (NTUU "KPI", Ukraine)

Abstract: “Lubid calc” allows you to calculate the coverage of the satellite signal and its derivatives, “budget” of the satellite link for satellites in the geostationary orbit. “Lubid calc” allows you to select the optimal parameters of the equipment of the earth stations and transponder to build the network.

Dynamical Relay Node Placement Solution in MANETs
Roberto Magán, (University of Granada (Spain)

Abstract: We focus on a well known problem: node relay placement. Several solutions have been proposed for that, most of them relying on maximizing performance goals such as connectivity or coverage. However, the bulk of the approaches are restricted to static scenarios where nodes are fixed in their positions over time.

Our work addresses highly changing scenarios from the perspective of the network topology, the main goal being to maintain or even recover global connectivity despite the free movement of the nodes. This way, our solution can be used in several and realistic scenarios like emergency rescue actions, disaster areas or in military operations either for reestablishing the communications lost, or for acting as a resilient/tolerant scheme when a network node is malfunctioning or even compromised (malicious node).

Through the demonstration we corroborate the feasibility of our solution in a real scenario. The demo consists of a self-explanatory video (the reviewers can see the video in corresponding to a real robot-based scenario provided by the Dalle Molle Institute for Artificial Intelligence (lDSlA) at Lugano (Swizertland). The experimental scenario is composed of seven user nodes which are moving following a random way point mobility model around a predefined area. Additionally, three smart agent nodes are dynamically located optimally over time. Acting as relay nodes, the network connectivity and throughput are maximized. These optimal locations are computed over time by applying a Particle Swarm Optimization (PSO) based relay node placement approach. In the video demonstration the viewer can see the network and system performance evolution and how the agent nodes are able to improve/recover the system performance even when the network is highly partitioned.