The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Cet article propose une technique de sondage de canal spatio-temporel bidirectionnel à bande ultra large utilisant la transformation entre les signaux dans les domaines fréquentiel et temporel (FD et TD). Des réseaux d'antennes virtuelles, composés d'antennes omnidirectionnelles et de scanners, sont utilisés pour l'émission et la réception dans le FD. Après la transformation de Fourier des signaux FD reçus en signaux TD, l'heure d'arrivée (TOA) est estimée à l'aide d'une recherche de pic sur les signaux TD, puis l'angle d'arrivée (AOA) et l'angle de départ (AOD) sont estimés à l'aide d'un histogramme d'angle pondéré. avec un algorithme de classification de signaux multiples (MUSIC) appliqué aux signaux FD, transformés par Fourier inverse à partir des signaux TD divisés en sous-régions. Les résultats du sondage des canaux intérieurs ont validé qu'une pondération appropriée réduisait un niveau parasite dans l'histogramme d'angle d'un facteur de 0.1 à 0.2 par rapport à celui de la non-pondération. La technique proposée a résolu avec succès les composantes dominantes à trajets multiples, notamment un trajet direct, une réflexion unique et une diffraction unique, dans des environnements à visibilité directe (LOS) et non-LOS. Les spectres conjoints TOA et AOA/AOD ont également été dérivés des signaux de sondage. Les spectres illustraient les composants dominants à trajets multiples (en accord avec la prédiction par lancer de rayons) sous forme de clusters.
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Copier
Naohiko IWAKIRI, Takehiko KOBAYASHI, "Ultra-Wideband Indoor Double-Directional Channel Estimation Using Transformation between Frequency and Time Domain Signals" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 9, pp. 2159-2166, September 2009, doi: 10.1587/transfun.E92.A.2159.
Abstract: This paper proposes an ultra-wideband double-directional spatio-temporal channel sounding technique using transformation between frequency- and time-domain (FD and TD) signals. Virtual antenna arrays, composed of omnidirectional antennas and scanners, are used for transmission and reception in the FD. After Fourier transforming the received FD signals to TD ones, time of arrival (TOA) is estimated using a peak search over the TD signals, and then angle of arrivals (AOA) and angle of departure (AOD) are estimated using a weighted angle histogram with a multiple signal classification (MUSIC) algorithm applied to the FD signals, inverse-Fourier transformed from the TD signals divided into subregions. Indoor channel sounding results validated that an appropriate weighting reduced a spurious level in the angle histogram by a factor of 0.1 to 0.2 in comparison with that of non-weighting. The proposed technique successfully resolved dominant multipath components, including a direct path, a single reflection, and a single diffraction, in line-of-sight (LOS) and non-LOS environments. Joint TOA and AOA/AOD spectra were also derived from the sounding signals. The spectra illustrated the dominant multipath components (agreed with the prediction by ray tracing) as clusters.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.2159/_p
Copier
@ARTICLE{e92-a_9_2159,
author={Naohiko IWAKIRI, Takehiko KOBAYASHI, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Ultra-Wideband Indoor Double-Directional Channel Estimation Using Transformation between Frequency and Time Domain Signals},
year={2009},
volume={E92-A},
number={9},
pages={2159-2166},
abstract={This paper proposes an ultra-wideband double-directional spatio-temporal channel sounding technique using transformation between frequency- and time-domain (FD and TD) signals. Virtual antenna arrays, composed of omnidirectional antennas and scanners, are used for transmission and reception in the FD. After Fourier transforming the received FD signals to TD ones, time of arrival (TOA) is estimated using a peak search over the TD signals, and then angle of arrivals (AOA) and angle of departure (AOD) are estimated using a weighted angle histogram with a multiple signal classification (MUSIC) algorithm applied to the FD signals, inverse-Fourier transformed from the TD signals divided into subregions. Indoor channel sounding results validated that an appropriate weighting reduced a spurious level in the angle histogram by a factor of 0.1 to 0.2 in comparison with that of non-weighting. The proposed technique successfully resolved dominant multipath components, including a direct path, a single reflection, and a single diffraction, in line-of-sight (LOS) and non-LOS environments. Joint TOA and AOA/AOD spectra were also derived from the sounding signals. The spectra illustrated the dominant multipath components (agreed with the prediction by ray tracing) as clusters.},
keywords={},
doi={10.1587/transfun.E92.A.2159},
ISSN={1745-1337},
month={September},}
Copier
TY - JOUR
TI - Ultra-Wideband Indoor Double-Directional Channel Estimation Using Transformation between Frequency and Time Domain Signals
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2159
EP - 2166
AU - Naohiko IWAKIRI
AU - Takehiko KOBAYASHI
PY - 2009
DO - 10.1587/transfun.E92.A.2159
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 9
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - September 2009
AB - This paper proposes an ultra-wideband double-directional spatio-temporal channel sounding technique using transformation between frequency- and time-domain (FD and TD) signals. Virtual antenna arrays, composed of omnidirectional antennas and scanners, are used for transmission and reception in the FD. After Fourier transforming the received FD signals to TD ones, time of arrival (TOA) is estimated using a peak search over the TD signals, and then angle of arrivals (AOA) and angle of departure (AOD) are estimated using a weighted angle histogram with a multiple signal classification (MUSIC) algorithm applied to the FD signals, inverse-Fourier transformed from the TD signals divided into subregions. Indoor channel sounding results validated that an appropriate weighting reduced a spurious level in the angle histogram by a factor of 0.1 to 0.2 in comparison with that of non-weighting. The proposed technique successfully resolved dominant multipath components, including a direct path, a single reflection, and a single diffraction, in line-of-sight (LOS) and non-LOS environments. Joint TOA and AOA/AOD spectra were also derived from the sounding signals. The spectra illustrated the dominant multipath components (agreed with the prediction by ray tracing) as clusters.
ER -