Accurate positioning in ultra-wideband systems
IEEE Wireless Communications
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/21976
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 positioning applications, two-step positioning systems are investigated from a UWB perspective. It is observed that time-based positioning is well suited for UWB systems. Then time-based UWB ranging is studied in detail, and the main challenges, theoretical limits, and range estimation algorithms are presented. Performance of some practical time-based ranging algorithms is investigated and compared against the maximum likelihood estimator and the theoretical limits. The trade-off between complexity and accuracy is observed. © 2011 IEEE.
- Research Paper 
Showing items related by title, author, creator and subject.
Efficient channel estimation for reconfigurable MIMO antennas: Training techniques and performance analysis Bahceci I.; Hasan M.; Duman T.M.; Cetiner B.A. (Institute of Electrical and Electronics Engineers Inc., 2017)Multifunctional and reconfigurable multiple-input multiple-output (MR-MIMO) antennas are capable of dynamically changing the operation frequencies, polarizations, and radiation patterns, and can remarkably enhance system ...
Kocak F.; Celebi H.; Gezici, S.; Qaraqe, K.A.; Arslan H.; Poor H.V. (2010)Time-delay estimation is studied for cognitive radio systems, which facilitate opportunistic use of spectral resources. A two-step approach is proposed to obtain accurate time-delay estimates of signals that occupy multiple ...
Theoretical limits and a practical estimator for joint estimation of respiration and heartbeat rates using UWB impulse radio Gezici, S.; Ankan O. (2007)In this paper, Cramer-Rao lower bounds are derived fo r joint estimation of respiration and heartbeat rates via impulse radio ultra-wideband signals. Generic models are employed for displacement functions due to respiration ...