Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems
نویسندگان
چکیده
منابع مشابه
Two-Step Time of Arrival Estimation for Pulse-Based Ultra-Wideband Systems
In cooperative localization systems, wireless nodes need to exchange accurate position-related information, such as time-of-arrival (TOA) and angle-of-arrival (AOA), in order to obtain accurate location information. One alternative for providing accurate position-related information is to use ultra-wideband (UWB) signals. High time resolution of UWB signals presents a potential for very accurat...
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Ultra-wideband radio (UWB) is a rapidly developing wireless technology that promises unprecedented data rates for short-range commercial radios, combined with precise locationing and high energy efficiency. These benefits stem from the use of wide bandwidths and impulse signaling, implying high channel capacity and precise time resolution. UWB has been used for military radar and imaging since ...
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Time Hopping (TH) is commonly used for Ultra Wideband Impulse Radio (UWB-IR) systems as a multiple access scheme. Such system suffers from the existence of spectral lines, which in turn require a power back-off of the total signal. Recently, Pulse-based polarity randomization for UWB IR system was proposed. The use of polarity codes can provide additional robustness against the Multiple Access ...
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Improving accuracy in wireless localization and ranging is a challenging task which often demands an increase in the signal-to-noise ratio (SNR). Impulsive ultra-wideband (UWB) technology is a promising signaling alternative that is capable of high-resolution ranging with minimal cost on SNR. Unfortunately, typical UWB time-of-arrival (ToA) estimators are complicated and perform poorly in the l...
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This paper presents an ultra wideband (UWB) channel sounding scheme with a technique for time of arrival (TOA) and angle of arrival (AOA) estimation using transformation between time and frequency domain signals. Since the measured UWB power spectrum can be transformed into a time domain signal, both frequency and time domain signals are available for the channel estimation. We propose the TOA ...
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ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2008
ISSN: 1687-6180
DOI: 10.1155/2008/529134