Design of a ridged waveguide slot antenna for millimeterwave applications

Murad, Noor Asniza; Suleiman, Raja Fazliza Raja

doi:10.1109/rfm.2011.6168730

Cited by 1 publication

(1 citation statement)

References 15 publications

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“…The use of directional steerable antennas at both channel ends has been proposed [5][6][7][8][9] for 5G systems at mmWave frequencies. This represents an important change in mobile communication systems, where omnidirectional antennas have traditionally been used, at least at mobile terminals.…”

Section: Introductionmentioning

confidence: 99%

Radio Channel Scattering in a 28 GHz Small Cell at a Bus Stop: Characterization and Modelling

2020

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The 28 GHz band is one of the available bands in Frequency Range 2 (FR2), above 6 GHz, for fifth generation (5G) communications. The propagation characteristics at this frequency band, together with the bandwidth requirements of 5G communications, make it suitable for ultra-dense smart cell networks. In this paper, we investigate the performance of a radio channel in the presence of moving, scattering sources for a small cell at 28 GHz, located at a bus stop. To do so, measurements of the channel complex impulse response with a sweep time delay cross-correlation sounder were made and then used to examine the distribution of multipath components. Besides analyzing the delay spread caused by the channel, we also evaluate the impact on the Doppler spectrum (DS) caused by the vehicles passing near the bus stop. We show that delay components are grouped in clusters exhibiting exponential decay power. We also show that the DS varies with time as vehicles pass by, so the channel cannot be considered stationary. We propose an empirical DS model, where the model parameter should change with time to describe the non-stationary nature of the radio channel. We have also found that the DS with maximum spread is similar for channel contributions in different delay clusters.

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