Results 21 to 30 of about 25,769 (204)
Geometric Approach to Passive Ranging in Underwater Localization Systems
IEEE Access, 2018 The use of underwater surveillance systems is critical for effective command of maritime power. Ships or submarines equipped with active sonar systems emit sounds to obtain range or angle information.
Yu-Chien Lin +3 more
doaj +1 more source
MmWave Massive MIMO Based Wireless Backhaul for 5G Ultra-Dense Network [PDF]
, 2015 Ultra-dense network (UDN) has been considered as a promising candidate for future 5G network to meet the explosive data demand. To realize UDN, a reliable, Gigahertz bandwidth, and cost-effective backhaul connecting ultra-dense small-cell base stations ...
Dai, Linglong +5 more
core +2 more sources
Towards Turning Smartphones Into mmWave Scanners
IEEE Access, 2021 This work was supported in part by the Ministerio de Ciencia, Innovación y Universidades of Spain /FEDER under Project RTI2018-095825-B-I00, and in part by the Gobierno del Principado de Asturias under Project GRUPIN-IDI-2018 ...
Guillermo Álvarez Narciandi +2 more
openaire +3 more sources
Lattice-Based mmWave Hybrid Beamforming [PDF]
IEEE Transactions on Communications, 2021 Conventional hybrid precoding and combining based transceivers require a large number of high-resolution radio frequency (RF) phase shifters (PSs), which impose prohibitive hardware costs and power consumption. To address the above issue, both partially connected RF PSs and low-resolution PSs have been proposed. However, the performance limits of these
Shanxiang Lyu +4 more
openaire +2 more sources
Calibration Method for Active Element Patterns corrupted by the Parasitic Effects of Feeding Networks [PDF]
Journal of Electromagnetic Engineering and ScienceThis paper presents a novel method for calibrating the active element patterns (AEPs) of array antennas distorted by feeding networks. These distortions include signal loss, multiple reflection, and parasitic radiation.
Seongjung Kim
doaj +1 more source
Sub-6GHz Assisted MAC for Millimeter Wave Vehicular Communications [PDF]
, 2019 Sub-6GHz vehicular communications (using DSRC, ITS-G5 or C-V2X) have been developed to support active safety applications. Future connected and automated driving applications can require larger bandwidth and higher data rates than currently supported by ...
Coll-Perales, Baldomero +2 more
core +3 more sources
Shadowed FSO/mmWave Systems With Interference [PDF]
IEEE Transactions on Communications, 2019 We investigate the performance of mixed free space optical (FSO)/millimeter-wave (mmWave) relay networks with interference at the destination. The FSO/mmWave channels are assumed to follow Malaga-M/Generalized-K fading models with pointing errors in the FSO link.
Imène Trigui +3 more
openaire +2 more sources
A Novel Negative Meander Line Design of Microstrip Antenna for 28 GHz mmWave Wireless Communications [PDF]
Radioengineering, 2020 The increasing applications for nomadic computing have experienced enormous development over the preceding decade. This has eventually caused the lack of bandwidth.
S. Kamal +7 more
doaj
Advanced Beam Estimation for Antennas Via Patterned Coupling-Line Detection Board in Ka-Band [PDF]
Journal of Electromagnetic Engineering and ScienceIn this research, we present an innovative method for estimating the beams of array antennas. Traditional beam analysis methods rely on placing receiving antennas in the far-field region, which requires moving or rotating the Tx or Rx, and using ...
Seokyeon Hong +4 more
doaj +1 more source
Improved Hybrid Precoder Design for Secure mmWave MIMO Communications
Elektronika ir Elektrotechnika, 2020 Key challenges of emerging mobile communication systems are to provide higher data rates, diverse device connectivity, low latency, higher system capacity, and low energy consumption. The communication systems exploiting the millimeter-wave (mmWave) band
Yasin Kabalci, Muhammad Ali
doaj +1 more source