Now showing items 21-30 of 155
Time-delay estimation in multiple-input single-output systems
In this paper, the time-delay estimation problem is studied for multiple-input single-output (MISO) systems. First, a theoretical analysis is carried out by deriving the Cramer-Rao lower bound (CRLB) for time-delay estimation ...
Performance limits on ranging with cognitive radio
Cognitive radio is a promising paradigm for efficient utilization of the radio spectrum due to its capability to sense environmental conditions and adapt its communication and localization features. In this paper, the ...
Noise enhanced detection in restricted Neyman-Pearson framework
Noise enhanced detection is studied for binary composite hypothesis-testing problems in the presence of prior information uncertainty. The restricted Neyman-Pearson (NP) framework is considered, and a formulation is obtained ...
Coded-reference ultra-wideband systems
Transmitted-reference (TR) and frequency-shifted reference (FSR) ultra-wideband (UWB) systems employ pairs of reference and data signals, which are shifted in the time and frequency domains, respectively, to facilitate ...
Optimal jammer placement in wireless localization systems
(Institute of Electrical and Electronics Engineers Inc., 2016)
In this study, the optimal jammer placement problem is proposed and analyzed for wireless localization systems. In particular, the optimal location of a jammer node is obtained by maximizing the minimum of the Cramér-Rao ...
Short-range wireless communications and reliability
(Cambridge University Press, 2011)
Even though there is no universally accepted definition, short-range wireless communications typically refers to a wide variety of technologies with communication ranges from a few centimeters to several hundreds of meters. ...
Accurate positioning in ultra-wideband systems
(Institute of Electrical and Electronics Engineers, 2011)
Accurate positioning systems can be realized via ultra-wideband signals due to their high time resolution. In this article, position estimation is studied for UWB systems. After a brief introduction to UWB signals and their ...
Optimal channel switching in multiuser systems under average capacity constraints
In this paper, the optimal channel switching problem is studied for average capacity maximization in the presence of multiple receivers in the communication system. First, the optimal channel switching problem is proposed ...
UWB localization algorithms
(John Wiley & Sons, 2009)
Optimal signaling and detector design for power constrained on-off keying systems in Neyman-Pearson framework
Optimal stochastic signaling and detector design are studied for power constrained on-off keying systems in the presence of additive multimodal channel noise under the Neyman-Pearson (NP) framework. The problem of jointly ...