The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
We have voluntarily surrendered our private data to BigData companies like Google and FaceBook in hope that our data there will be safe and will be used only for ethical machine learning purposes to further advance artificial intelligence capabilities we already use daily: smart search, machine translation, speech recognition, guessing our interests etc. But alongside these positive BigData uses,...
Interference in frequency-selective multiple-input multiple-output (MIMO) systems can be removed by applying a block-transmission description based on spatio-temporal vector coding and using singular value decomposition (SVD). In this contribution a newly developed SVD algorithm for polynomial matrices (PMSVD) is analyzed and compared to the commonly used SVD-based MIMO equalization. Since the PMSVD...
This paper describes the design and measurement results of a high speed optical avalanche photodiode (APD) receiver produced in a standard BiCMOS process. The receiver is intended to be used in an optical wireless communication scenario and therefore has a large-area photodiode, high dynamic range and a dc photocurrent rejection loop. The receiver reaches the sensitivity of −31.8 dBm at 1 Gbit/s and...
In this paper, a novel design of frequency independent nano-antennas is introduced. The design described in this work consists of two arms spiral nano-antenna placed on a glass substrate. Full systematic analysis is carried out where the antenna impedance, return loss, field confinement are calculated using FDTD. In addition, studies show the power absorption of the antenna to calculate its harvesting...
Gain clamping performance in an L-Band EDFA based on a lasing structure using a symmetrical narrowband FBG couple, has been analyzed experimentally. By optimizing the peak reflection wavelength of the FBG, a high clamped gain (over 27 dB) was obtained with a 0.1 dB ripple and an ∼ 25 dB dynamic range at 1585 nm.
The principle of operation of the optical device for determine the size and velocity of rain and hail drops and measuring the level of meteorological precipitation is described. The estimation of the required parameters of the electronic and optical elements of the device is presented. Two version of the device construction the slit-type diaphragm and arrays of photodiodes were tested and obtained...
This paper shows how to estimate an extended polynomial matrix description of a non-linear MIMO system. Both linear and non-linear impulse responses are obtained by transmitting pseudo random binary sequence (PRBS) test-patterns and can be easily separated thanks to the shift-and-add property of PRBS. Further on, a method to equalize such nonlinear systems based on this extended polynomial matrix...
In this paper, we propose a multi-hop multi-branch multiple-input multiple-output (MIMO) SSK scheme with path selection and investigate its error performance. In this scheme, the best path is selected among multiple branches and a multiple-antenna source (S) communicates with a multiple-antenna destination (D) via the relays of the selected path. Each relay is equipped with multiple transmit and receive...
In this paper, we propose a cooperative relaying scheme combining space shift keying (SSK) and transmit antenna selection (TAS), and investigate its error performance. In this scheme, source TAS is performed based on the channel fading coefficients corresponding to source-destination, source-relay and relay-destination links. SSK is applied by using the selected antennas. Moreover, a single-antenna...
The implementation of channel estimation procedures in modern wireless networks exposes them to the risk of pilot contamination attacks. To protect the system from such types of malicious intervention, a recently proposed method, based on legitimate pilots from shifted constellations, can be applied. In this paper, the detection capability of this method is studied in both the presence and absence...
This paper is dedicated to the investigation of the influence of different waveforms on the efficiency of radio frequency (RF) to direct current (DC) conversion in wireless power transfer (WPT) systems. Single-tone, multi-tone, random and chaotic signals are used and compared as waveforms for wireless power transfer. The influence of peak-to-average power ratio (PAPR) and average input power of the...
Meeting the ever-growing information rate demands has become of utmost importance for optical communication systems. However, it has proven to be a challenging task due to the presence of Kerr effects, which have largely been regarded as a major bottleneck for enhancing the achievable information rates in modern optical communications. In this work, the optimisation and performance of digital nonlinearity...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.