12 Jul 2017
13:30
A105
P3: Theory and Applications
| 1. Security and Privacy Aspects of Modern ICT Concepts | ||
| Sandro Geric and Renata Mekovec (University of Zagreb, Croatia) | ||
| With the increase in popularity of IoT devices and its application in,wide spread domains including home, cities energy systems, retail,,logistics, industry, everyday environment it urgent to address related,privacy/security issues. The IoT wave is moving much more rapidly than,the right of privacy/security can be ensured. Although there are,regulation that address data privacy/security consumers must own the,responsibility for their data. In this paper, we describe an overall,view of the known and new threats for the security and privacy connected,with Internet of Things (IoT). | ||
| 2. Widely Linear MIMO Precoding for Secure D2D Communications in Cellular Networks | ||
| Bangwon Seo (Kongju National University, Korea) | ||
| In this paper, we consider a secure transmission for device-to-device,(D2D) direction communication in cellular network when there is an,malicious user that is trying to overhear the D2D information data. D2D,communication reuses frequency-time resources that are originally,allocated to cellular downlink communications. We assume that the D2D,transmitter is equipped with multiple transmit antennas and the D2D,receiver is employed with multiple receive antennas. In this case, we,propose to employ widely linear precoding scheme in D2D transmitter. The,precoding vectors are designed to maximize a secure sum achievable,rate. Through computer simulation, we show that the secure sum,achievable rate performance of the proposed widely linear precoding,scheme is better than that of the conventional linear precoding scheme. | ||
| 3. Quadcopter altitude control in low level hovering using PID controller | ||
| Ante Maras, Josip Music and Ivo Stancic (University of Split, Croatia) | ||
| Owing to rapid development of hardware components and simultaneous,reduction in prices, Unmanned Ariel Vehicles (UAVs) are becoming,ubiquitous including performing some of the smart city services.,Quadcopters are one class of UAVs which has particularity seen rapid,growth due to its versatility and good performance characteristics.,Since it is inherently unstable and hard to stabilize by human operator,(manual control), it has to have controllers for the attitude,stabilization. However, often altitude stabilization around desired,height is not implemented. Thus this paper addresses that issue by,developing PID based controller with integral anti-wind up feature for,low altitude hovering. Lowe altitude is a constraint since control is,based on ultrasonic measurements which have limited range. The approach,is tested on AR.Drone 1.0 machine and obtained results are presented and,discussed. | ||
| 4. Wi-Fi Channel Measurements in the Outdoor Building Environment | ||
| Zeljko Sanader (University of Split, FESB, Croatia); Maja Škiljo and Zoran Blažević (University of Split, Croatia) | ||
| Nowadays, the Wi-Fi infrastructure is already present all around us in,terms of a great number of access points and Wi-Fi enabled commercial,devices. So, it practically presents a default connectivity solution for,many emerging technologies like Internet of Things (IoT) and Smart City,concept. In this paper, the measurement results of Wi-Fi channel in the,outdoor building environment are given. Different propagation,environments are considered in order to point out the possible sources,of signal losses in the examined Wi-Fi channel. Also, for that purpose,the influence of human hand signal absorption was shown by comparing the,measurements performed by professional equipment with the ones obtained,by a smart phone. Since in practical design of a Wi-Fi network it is,necessary to take into account the position of the antennas, we,considered the change of the antenna gain when the transmitter and,receiver are at different heights in respect to each other. So,,transmitter gain correction was estimated and a good agreement is shown,between the calculated and measured received power level. |