Now showing items 1-7 of 7

    • Enhanced position estimation via node cooperation 

      Sahinoglu, Z.; Gezici, S. (2010)
      Two-way time-of-arrival (TW-ToA) is a widely used ranging protocol that can provide the distance between two devices without time synchronization. One drawback of the TW-ToA is poor positioning accuracy in the absence of ...
    • Noise enhanced detection in multiple-access environments 

      Bayram, S.; Gezici, S. (2009)
      Under certain conditions, addition of noise can enhance performance of suboptimal detectors, which is called the stochastic resonance (SR) effect. In this paper, the effects of SR are investigated for conventional detectors ...
    • Performance analysis of code-multiplexed transmitted-reference ultra-wideband systems 

      Tutay, M.E.; Gezici, S.; Poor H.V. (2011)
      In code-multiplexed transmitted-reference (CM-TR) ultra-wideband (UWB) systems, data signals and reference signals are transmitted using two distinct orthogonal codes. In this way, performance improvements and/or implementation ...
    • Quadrupedal bounding with an actuated spinal joint 

      Çulha, U.; Saranli, U. (2011)
      Most legged vertebrates use flexible spines and supporting muscles to provide auxiliary power and dexterity for dynamic behaviors, resulting in higher speeds and additional maneuverability during locomotion. However, most ...
    • Space weather activities of IONOLAB group using TNPGN GPS Network 

      Aktug, B.; Lenk O.; Kurt, M.; Parmaksiz, E.; Ozdemir, S.; Arikan F.; Sezen, U.; Toker, C.; Arikan, O. (2011)
      Characterization and constant monitoring of variability of the ionosphere is of utmost importance for the performance improvement of HF communication, Satellite communication, navigation and guidance systems, Low Earth ...
    • Throughput modeling of single hop CSMA networks with non-negligible propagation delay 

      Koseoglu, M.; Karasan, E. (IEEE, 2013)
      We analyze the performance of the CSMA protocol under propagation delays that are comparable with packet transmission times. We propose a semi-Markov model for the 2-node CSMA channel. For the 2-node case, the capacity ...
    • Utilization-based dynamic scheduling algorithm for wireless mesh networks 

      Kas, M.; Korpeoglu, I.; Karasan, E. (SpringerOpen, 2010-10)
      Channel access scheduling is one of the key components in the design of multihop wireless mesh networks (WMNs). This paper addresses the allocation/demand mismatch problem observed in oblivious WMN channel access scheduling ...