Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Jose A. Garcia-Naya"'
Publikováno v:
IEEE Access, Vol 8, Pp 220205-220214 (2020)
ultra-wideband (UWB) technology enables centimeter-level localization systems based on the accurate estimation of the actual distance between transmitter and receiver, by means of the precise estimation of the signal time-of-flight. However, this is
Externí odkaz:
https://doaj.org/article/e89513287c424800bc3e7abda209b43f
Publikováno v:
IEEE Access, Vol 8, Pp 151976-151989 (2020)
The design of efficient time-modulated arrays (TMAs) for multi-beam steering purposes must be based on both a type of periodical sequences that guarantees an adequate windowing of exploited harmonics, and a feeding network capable of providing low ha
Externí odkaz:
https://doaj.org/article/134a6f812bdb4609ae3560bef0352adb
Autor:
Aniruddha Chandra, Aniq Ur Rahman, Ushasi Ghosh, Jose A. Garcia-Naya, Ales Prokes, Jiri Blumenstein, Christoph F. Mecklenbrauker
Publikováno v:
IEEE Access, Vol 7, Pp 97815-97826 (2019)
Millimeter-wave (mmWave) transmission over the unlicensed 60-GHz spectrum is a potential solution to realize high-speed internet access, even inside mass transit vehicles. The solution involves communication between users and a mmWave-band on-board u
Externí odkaz:
https://doaj.org/article/0d968905e32749f6838c2a9635029b77
Autor:
Tomas Dominguez-Bolano, Jose Rodriguez-Pineiro, Jose A. Garcia-Naya, Xuefeng Yin, Luis Castedo
Publikováno v:
IEEE Access, Vol 6, Pp 52814-52830 (2018)
Channel characterization is essential when planning wireless communication deployments. We consider the wireless channel characterization in a modern subway station and its corresponding entrance tunnel, a topic greatly overlooked in the literature.
Externí odkaz:
https://doaj.org/article/b8c47373cfce45aaa9473b9fc4ace4d5
Autor:
Valentin Barral Vales, Omar Campos Fernandez, Tomas Dominguez-Bolano, Carlos J. Escudero, Jose A. Garcia-Naya
Publikováno v:
IEEE Internet of Things Journal. 9:18305-18318
[Abstract]: In the world of Internet of Things (IoT), obtaining the physical location of devices has always been a task of great interest for developing increasingly complex location-based services (LBS). That is why in recent years wireless communic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ebbbdf8fb550df4df8e32b0fd95b2f0
https://doi.org/10.1109/jiot.2022.3158701
https://doi.org/10.1109/jiot.2022.3158701
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 20:1973-1977
Frequency diverse arrays (FDAs) allow the synthesis of dot-shaped radiated patterns in the range-angle space by applying frequency offsets to the antenna elements. Conventional FDAs are usually implemented with costly variable phase shifters and mixe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3dd9177ec6db6d43f57ce89cb71e097
https://doi.org/10.1109/lawp.2021.3101362
https://doi.org/10.1109/lawp.2021.3101362
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 20:1716-1720
The application of frequency offsets to the elements of a conventional phased array with variable phase shifters (VPSs) leads to frequency diverse arrays (FDAs) with the ability to provide range-angle spatial focusing. In this letter, we propose an i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19582298e7e9ae0bd23b02985305735f
https://doi.org/10.1109/lawp.2021.3094936
https://doi.org/10.1109/lawp.2021.3094936
Publikováno v:
2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd120af3d47f0961fa2e50e1eb3b647f
https://doi.org/10.1109/ap-s/usnc-ursi47032.2022.9886941
https://doi.org/10.1109/ap-s/usnc-ursi47032.2022.9886941
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 19:1862-1866
Time-modulated arrays (TMAs) can effectively perform beamsteering over the first positive harmonic pattern by applying progressively delayed versions of stair-step approximations of a sine waveform to the antenna excitations. In this letter, we consi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd5916c11be8488a16413128baa5b5df
https://doi.org/10.1109/lawp.2020.2986832
https://doi.org/10.1109/lawp.2020.2986832
Publikováno v:
IEEE Transactions on Vehicular Technology. 69:11458-11469
Doubly-selective channels, such as those that occur when the transmitter and the receiver move relative to each other at high speeds, are a key scenario for fifth generation (5G) cellular systems, which are mostly based in the use of the orthogonal f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e86bd164772f90d01a02d7d16c2d829c
https://doi.org/10.1109/tvt.2020.3011365
https://doi.org/10.1109/tvt.2020.3011365