3,159 research outputs found
A Novel Millimeter-Wave Channel Simulator and Applications for 5G Wireless Communications
This paper presents details and applications of a novel channel simulation
software named NYUSIM, which can be used to generate realistic temporal and
spatial channel responses to support realistic physical- and link-layer
simulations and design for fifth-generation (5G) cellular communications.
NYUSIM is built upon the statistical spatial channel model for broadband
millimeter-wave (mmWave) wireless communication systems developed by
researchers at New York University (NYU). The simulator is applicable for a
wide range of carrier frequencies (500 MHz to 100 GHz), radio frequency (RF)
bandwidths (0 to 800 MHz), antenna beamwidths (7 to 360 degrees for azimuth and
7 to 45 degrees for elevation), and operating scenarios (urban microcell, urban
macrocell, and rural macrocell), and also incorporates multiple-input
multiple-output (MIMO) antenna arrays at the transmitter and receiver. This
paper also provides examples to demonstrate how to use NYUSIM for analyzing
MIMO channel conditions and spectral efficiencies, which show that NYUSIM is an
alternative and more realistic channel model compared to the 3rd Generation
Partnership Project (3GPP) and other channel models for mmWave bands.Comment: 7 pages, 8 figures, in 2017 IEEE International Conference on
Communications (ICC), Paris, May 201
73 GHz Wideband Millimeter-Wave Foliage and Ground Reflection Measurements and Models
This paper presents 73 GHz wideband outdoor foliage and ground reflection
measurements. Propagation measurements were made with a 400 Megachip-per-second
sliding correlator channel sounder, with rotatable 27 dBi (7 degrees half-
power beamwidth) horn antennas at both the transmitter and receiver, to study
foliage-induced scattering and de-polarization effects, to assist in developing
future wireless systems that will use adaptive array antennas. Signal
attenuation through foliage was measured to be 0.4 dB/m for both co- and
cross-polarized antenna configurations. Measured ground reflection coefficients
for dirt and gravel ranged from 0.02 to 0.34, for incident angles ranging from
60 degrees to 81 degrees (with respect to the normal incidence of the surface).
These data are useful for link budget design and site-specific (ray-tracing)
models for future millimeter-wave communication systems.Comment: 6 pages, 4 figures, 2015 IEEE International Conference on
Communications (ICC), ICC Workshop
28 GHz and 73 GHz Millimeter-Wave Indoor Propagation Measurements and Path Loss Models
This paper presents 28 GHz and 73 GHz millimeter- wave propagation
measurements performed in a typical office environment using a 400
Megachip-per-second broadband sliding correlator channel sounder and highly
directional steerable 15 dBi (30 degrees beamwidth) and 20 dBi (15 degrees
beamwidth) horn antennas. Power delay profiles were acquired for 48
transmitter-receiver location combinations over distances ranging from 3.9 m to
45.9 m with maximum transmit powers of 24 dBm and 12.3 dBm at 28 GHz and 73
GHz, respectively. Directional and omnidirectional path loss models and RMS
delay spread statistics are presented for line-of-sight and non-line-of-sight
environments for both co- and cross-polarized antenna configurations. The LOS
omnidirectional path loss exponents were 1.1 and 1.3 at 28 GHz and 73 GHz, and
2.7 and 3.2 in NLOS at 28 GHz and 73 GHz, respectively, for
vertically-polarized antennas. The mean directional RMS delay spreads were 18.4
ns and 13.3 ns, with maximum values of 193 ns and 288 ns at 28 GHz and 73 GHz,
respectively.Comment: 7 pages, 9 figures, 2015 IEEE International Conference on
Communications (ICC), ICC Workshop
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