Zoran Kostic

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In th is paper, we explore the feasibility of designing an outdoor cellular network based on the IEEE 802.11 standard, which was developed originally for wireless local -area networks. For channels typical in cellular networks, we study the radio link power budg et and, via simulation, the bit -error performance of three kinds of receiver: (1) the(More)
We examine techniques for increasing spectral efficiency of cellular systems by using slow frequency hopping (FH) with dynamic frequency-hop (DFH) pattern adaptation. We first present analytical results illustrating the improvements in frequency outage probabilities obtained by DFH in comparison with random frequency hopping (RFH). Next, we show simulation(More)
We develop a new method for the estimation of the parameters of multipath communication channels. The method makes use of matched filtering, set-theoretic deconvolution and autoregressive modeling. Pulse compression waveforms are used as channel probing signals. We report the results of a feasibility study where the proposed method is applied to specular(More)
This paper focuses on the major phases present in the development of an SDR system: design; simulation; code generation and verification. The paper will illustrate, through an example, the use of Model Based Design methodology and tools to integrate the major development phases into one continuous design cycle. Advanced system design concepts including,(More)
This paper explores the feasibility of designing an outdoor cellular network based on the IEEE 802.11 standard, which was developed originally for wireless localarea networks. Specifically, the performance of the 802.11 radio and multiple access control (MAC) protocol in outdoor environments is investigated. For channels typical in cellular networks, we(More)
We evaluate the performance of recently proposed dynamic frequency hopping (DFH) when applied to cellular systems with a limited total bandwidth. We also illustrate a practical implementation for DFH deployment using network-assisted resource allocation (NARA). The performance evaluation is accomplished by system-level simulations of a system with 12(More)