Gunes Karabulut Kurt

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Capacity of systems using single modulation type can be calculated in a semi-deterministic fashion. However, for systems with adaptive modulation and coding, the capacity is also dependent on the distribution of modulations and traffic beneath these distributions. In order to utilise the network resources effectively, the areas with higher traffic should be(More)
Orthogonal frequency division multiplexing (OFDM) is one of the most commonly used methods in new generation communication systems since it can provide high bandwidth efficiency levels. However, the sensitivity of OFDM systems to time and frequency offsets is known. In this paper, the relation between the sampling frequency offset observed due to sampling(More)
In this work, a method that evaluates both subcarrier and power allocations together for the users of OFDMA systems is proposed. In practical usage, the allocation to users is implemented from existing subcarrier group considering the transmission power of users is limited. The aim of this study is the realization of subcarrier allocation without exceeding(More)
The effect of two important MAC parameters on performance of IEEE 802.11ac and 802.11n based wireless local area networks (WLANs) have been investigated experimentally. In the first experiment set-up, effects of Request to Send/Clear to Send (RTS/CTS) packets on throughput performance are observed according to the number of hops. In the second set-up, the(More)
Network coding allows a significant increase in throughput in multicast and broadcast scenarios; by letting intermediate nodes between data sources and destinations forward a coded version of incoming packets. Random network coding is a type of network coding in which the coefficients used to encode the data packets are randomly extracted from a Galois(More)
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