Browsing by Author "Gezici, Sinan"
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Convexity properties of detection probability for noncoherent detection of a modulated sinusoidal carrier
Öztürk, Cüneyd; Dülek, B.; Gezici, Sinan (Institute of Electrical and Electronics Engineers, 2018)In this correspondence paper, the problem of noncoherent detection of a sinusoidal carrier is considered in the presence of Gaussian noise. The convexity properties of the detection probability are characterized with respect ... 
Convexity properties of detection probability under additive Gaussian noise: optimal signaling and jamming strategies
Dulek, B.; Gezici, Sinan; Arıkan, Orhan (IEEE, 2013)In this correspondence, we study the convexity properties for the problem of detecting the presence of a signal emitted from a power constrained transmitter in the presence of additive Gaussian noise under the NeymanPearson ... 
Convexity properties of outage probability under Rayleigh fading
Dülek, Berkan; Vanlı, N. Denizcan; Gezici, Sinan (IEEE, 2012)In this paper, convexity properties of outage probability are investigated under Rayleigh fading for an average powerconstrained communications system that employs maximalratio combining (MRC) at the receiver. By studying ... 
Cooperative localization in hybrid infrared/visible light networks: Theoretical limits and distributed algorithms
Keskin, M. Furkan; Erdem, Osman; Gezici, Sinan (Institute of Electrical and Electronics Engineers, 2019)Light emitting diode (LED) based visible light positioning (VLP) networks can provide accurate location information in environments where the global positioning system (GPS) suffers from severe signal degradation and/or ... 
Cooperative positioning in wireless networks
Gholami, M. R.; Keskin, M. F.; Gezici, Sinan; Jansson, M. (John Wiley & Sons, 2016)In this article, we study cooperative positioning in wireless networks in which target nodes at unknown locations locally collaborate with each other to find their locations. We review different models available for ... 
Cost minimization of measurement devices under estimation accuracy constraints in the presence of Gaussian noise
Dulek, B.; Gezici, Sinan (Elsevier, 2012)Novel convex measurement cost minimization problems are proposed based on various estimation accuracy constraints for a linear system subject to additive Gaussian noise. Closed form solutions are obtained in the case of ... 
CRLB based optimal noise enhanced parameter estimation using quantized observations
Balkan, G. O.; Gezici, Sinan (IEEE, 20100222)In this letter, optimal additive noise is characterized for parameter estimation based on quantized observations. First, optimal probability distribution of noise that should be added to observations is formulated in terms ... 
Detector randomization and stochastic signaling for minimum probability of error receivers
Dulek, B.; Gezici, Sinan (Institute of Electrical and Electronics Engineers, 2012)Optimal receiver design is studied for a communications system in which both detector randomization and stochastic signaling can be performed. First, it is proven that stochastic signaling without detector randomization ... 
Direct and twostep positioning in visible light systems
Keskin, Musa Furkan; Gezici, Sinan; Arıkan, Orhan (IEEE, 2018)Visible light positioning (VLP) systems based on light emitting diodes can facilitate high accuracy localization services for indoor scenarios. In this paper, direct and twostep positioning approaches are investigated for ... 
Direct positioning in synchronous and asynchronous visible light systems
Keskin, Musa Furkan; Gezici, Sinan; Arıkan, Orhan (IEEE, 2018)In this paper, direct positioning approaches are investigated for both synchronous and asynchronous visible light systems. First, the maximum likelihood estimator (MLE) and the CramérRao lower bound (CRLB) are derived for ... 
Distance and position estimation in visible light systems with RGB LEDs
Demirel, I.; Gezici, Sinan (Elsevier, 20220117)In this paper, distance and position estimation problems are investigated for visible light positioning (VLP) systems with redgreenblue (RGB) light emitting diodes (LEDs). The accuracy limits on distance and position ... 
Distributed bounding of feasible sets in cooperative wireless network positioning
Gholami, M. R.; Wymeersch, H.; Gezici, Sinan; Ström, E. G. (IEEE, 2013)Locations of target nodes in cooperative wireless sensor networks can be confined to a number of feasible sets in certain situations, e.g., when the estimated distances between sensors are larger than the actual distances. ... 
A distributed positioning algorithm for cooperative active and passive sensors
Gholami, M.R.; Gezici, Sinan; Rydström, M.; Ström, E.G. (IEEE, 2010)The problem of positioning a target node is studied for wireless sensor networks with cooperative active and passive sensors. Twoway timeofarrival and timedifferenceofarrival measurements made by both active and ... 
Dynamic signaling games under Nash and Stackelberg equilibria
Sarıtaş, Serkan; Yüksel, Serdar; Gezici, Sinan (IEEE, 2016)In this study, dynamic and repeated quadratic cheap talk and signaling game problems are investigated. These involve encoder and decoders with mismatched performance objectives, where the encoder has a bias term in the ... 
Dynamic signaling games with quadratic criteria under Nash and Stackelberg equilibria
Sarıtaş, Serkan; Yüksel, Serdar; Gezici, Sinan (Elsevier, 202001)This paper considers dynamic (multistage) signaling games involving an encoder and a decoder who have subjective models on the cost functions. We consider both Nash (simultaneousmove) and Stackelberg (leader–follower) ... 
Eavesdropper and jammer selection in wireless source localization networks
Öztürk, Cüneyd; Gezici, Sinan (IEEE, 20210726)We consider a wireless source localization network in which a target node emits localization signals that are used by anchor nodes to estimate the target node position. In addition to target and anchor nodes, there can ... 
Eavesdropper selection strategies in wireless source localization networks
Öztürk, Cüneyd; Gezici, Sinan (IEEE, 2020)We consider a wireless source localization network in which eavesdropper nodes aim to estimate the position of a target node. We formulate the problem of selecting a set of N E positions out of N possible positions for ... 
ECRBbased optimal parameter encoding under secrecy constraints
Göken, Çağrı; Gezici, Sinan (Institute of Electrical and Electronics Engineers, 2018)In this paper, optimal deterministic encoding of a scalar parameter is investigated in the presence of an eavesdropper. The aim is to minimize the expectation of the conditional CramérRao bound at the intended receiver ... 
Effects of additional independent noise in binary composite hypothesistesting problems
Bayram, Suat; Gezici, Sinan (IEEE, 200909)Performance of some suboptimal detectors can be improved by adding independent noise to their observations. In this paper, the effects of adding independent noise to observations of a detector are investigated for binary ... 
Effects of channel state information uncertainty on the performance of stochastic signaling
Göken, Çağrı; Gezici, Sinan; Arıkan, Orhan (IEEE, 2011)In this paper, stochastic signaling is studied for powerconstrained scalar valued binary communications systems in the presence of uncertainties in channel state information (CSI). First, it is shown that, for a given ...