Ufuk Tureli

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—In orthogonal frequency-division multiplexing (OFDM) communications, carrier frequency offset must be estimated and compensated at the receiver to maintain orthogonality. In this paper, we examine the performance of a blind carrier frequency offset estimation algorithm for OFDM communications. Experiments were conducted on a system operating at close to 2(More)
Wireless access based on slotted Aloha with selfish users may result in very inefficient use of the system resources. To impose cooperation and fairness in such systems, we propose an optimal pricing strategy, based on which the service provider can regulate the overall network behavior. As the users' utility incorporates the price paid for using the(More)
In OFDM communications, the loss of orthogonality due to carrier offset must be compensated before DFT-based de-modulation can be performed. In this paper, we present a high accuracy blind carrier offset estimation algorithm and a blind channel equalizer which exploit the intrinsic structure information of OFDM signals. The latter method allows the receiver(More)
In this paper, recent localization algorithms are analyzed under a common one hop network scenario. The performance of lo-calization is affected by physical parameters in a real wireless environment such as anchor node location and quantity, and error in the measured distance. The numerical analysis presented in this paper can be used to choose among(More)