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Since the first arrival path may not be the strongest path of UWB (Ultra Wide Band) multipath channels, this makes ToA (Time-of-Arrival) estimation becomes a challengeable issue. Furthermore, because of ultra bandwidth of received signal, CS (Compressed Sensing) theory is employed to reduce the complexity caused by very high Nyquist sampling rate in UWB receivers. In this paper, we propose a ToA estimation...
In time of arrival (TOA) estimation of received ultra-wideband (UWB) pulses, traditional maximum likelihood (ML) and generalized likelihood estimators become impractical due to their high sampling rate. Sub-nyquist ML-based TOA estimation currently assumes a priori knowledge of the UWB channels in the form of the average power delay profile (APDP). In this paper, instead of assuming a known APDP,...
The Impulse Radio - Ultra Wideband (IR-UWB) technology, which benefits from unprecedented ranging capabilities through precise Time of Arrival (TOA) estimation, is now widely considered as a credible solution for Location and Tracking (LT) applications in Wireless Sensor Networks (WSN). In this context, low-complexity receiver architectures such as Energy Detectors (ED) have been favored for the past...
Robot localization is a fundamental problem in mobile robotics. This paper proposes the use of a new type of sensor that permits accurate localization in indoor environments. An impulse radio (IR) ultra wide-band (UWB) sensor uses very short baseband pulses for transmission. This sensor facilitates the development of indoor location and tracking applications based on time of arrival estimation with...
Impulse radio (IR) Ultra Wide-Band (UWB) has gained great interest recently for indoor location and tracking applications. Due to its high bandwidth and short pulses length, UWB potentially allows great accuracy in range measurements based on time of arrival (TOA) estimation. There are many different techniques that have been proposed for UWB localization; however they usually have big errors in non...
UWB technology is especially suitable for location and tracking applications due to its high bandwidth, which allows a great accuracy on Time Of Arrival (TOA) estimation. Nevertheless, the achievement of this goal on multipath environments requires the design of efficient detection algorithms. The main objective of this paper is to compare and to provide a qualitative and quantitative evaluation of...
Impulse radio (IR) ultra wide-band (UWB) is one of the most promising wireless technologies to develop both indoor and outdoor location and tracking applications. Due to its high bandwidth and short duration pulses, UWB potentially allows a great accuracy in distance measurements based on time of arrival (TOA) estimations. The main objective of this paper is to compare and to provide a qualitative...
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