Papers by Maja Ilic-Delibasic
Wireless Personal Communications, 2016
2015 38th International Conference on Telecommunications and Signal Processing (TSP), 2015
In this paper a complete analytical model for BER (Bit Error Rate) calculation of OFDM (Orthogona... more In this paper a complete analytical model for BER (Bit Error Rate) calculation of OFDM (Orthogonal Frequency Division Multiplexing) system with polarization diversity is presented. The assumed system consists of one transmit and dual polarized receive antenna. Propagation environment is characterized with Ricean fading and novel method for analytical determination of the system BER performance is introduced. Maximal ratio combining of the received diversity signals is performed on subcarrier basis. The obtained analytical results are compared with the ones attained by simulation. It is shown that polarization diversity scheme can be considered as an efficient solution for improving OFDM system performance.
This is a synopsis of two of the most popular diversity techniques, Polarization Diversity (PD) a... more This is a synopsis of two of the most popular diversity techniques, Polarization Diversity (PD) and Space Diversity (SD), employed in modern communication systems in order to mitigate multipath fading. After outlining the basic principles of the two approaches, we provide representative samples from the literature concerning a hybrid Space-Polarization Diversity (SPD) technique, with particular application of a specific spacetime block code (STBC).
Abstract In this paper we analyze symbol error probability of a digital communication system over... more Abstract In this paper we analyze symbol error probability of a digital communication system over wireless fading channel, where the random signal envelope fluctuations are described with Ricean fading distribution. Instead of considering only the envelope, ie instantaneous ...
It has been shown that cooperative communication schemes can solve many of the issues faced by fu... more It has been shown that cooperative communication schemes can solve many of the issues faced by future broadband WWAN and WLAN networks. It is about communication concept based on resource sharing and coordination among terminals in wireless network that provides significant performance improvements in terms of increased coverage, data rates, capacity, reliability, spectral and energy efficiency. This paper gives detailed overview of cooperative communication concept based on replacement of direct communication link between source and destination with several shorter links using network terminals called relays. Several, so called fixed relaying techniques, are described: amplify-and-forward fixed gain (AF FG), amplify-and-forward variable gain (AF VG) and decode-and-forward (DF). Appropriate analytical models for outage probability, bit error rate and system capacity values are presented. Further on, assuming Rayleigh fading channels, comparison of the presented relaying techniques are performed, enabling identification of optimal signal transmission scenarios for cooperative communication systems.
It has been shown that cooperative communication schemes can solve many of the issues faced by fu... more It has been shown that cooperative communication schemes can solve many of the issues faced by future broadband WWAN and WLAN networks. It is about communication concept based on resource sharing and coordination among terminals in wireless network that provides significant performance improvements in terms of increased coverage, data rates, capacity, reliability, spectral and energy efficiency. This paper gives detailed overview of cooperative communication concept based on replacement of direct communication link between source and destination with several shorter links using network terminals called relays. Several, so called fixed relaying techniques, are described: amplify-and-forward fixed gain (AF FG), amplify-and-forward variable gain (AF VG) and decode-and-forward (DF). Appropriate analytical models for bit error rate and system capacity values are presented. Further on, assuming Rayleigh fading channels, comparison of the presented relaying techniques are performed, enabli...
Telfor Journal, 2014
ABSTRACT
2015 Wireless Telecommunications Symposium (WTS), 2015
2014 22nd Telecommunications Forum Telfor (TELFOR), 2014
Wireless Personal Communications, 2014
ABSTRACT
2014 Wireless Telecommunications Symposium, 2014
ABSTRACT
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Papers by Maja Ilic-Delibasic