Radio Propagation Measurement and Channel Modelling

NIST channel sounder overview and channel measurements in manufacturing facilities

“…Comment 1: The slopes from the linear regression fits for large-range values agreed with previous studies and research for industrial facilities environments [13,14,15,16,17].…”

Millimeter-Wave Propagation: Characterization and modeling toward fifth-generation systems. [Wireless Corner]

“…Typical relative permittivity and conductivity for different building materials are reported by [23] and [24] while a comparative study between 5.8 GHz and 62.4 GHz is given by [25]. ITU-R recommendation 2040-1 [26] provides an expression for the conductivity σ -which gives rise to the dB/m specific attenuation factor -as a function of frequency f in GHz Reported penetration losses at 60 GHz are on the order of some dBs for very thin plastic, wood or plaster partitions, 4 dB for a 0.7 cm single-panel tempered glass and 25 dB for a 9 cm indoor brick wall when both the transmit and receive antennas are vertically polarised [28] [29]. Penetration losses at 70 GHz are similar to those at 60 GHz and are summarized in Table 1 for some common materials.…”

Through-The-Wall Detection With Gated FMCW Signals Using Optimized Patch-Like and Vivaldi Antennas

“…Assuming to model the gating sequences as binary on-off functions, the MRS depends on properties such as number of bits and bit duration, and on the round-trip delay to the targets. An exhaustive analysis of FMICW waveforms and possible gating sequences is provided in [21]. The MRS can be considered as a weight applied to the received power of the radar, thus providing additional attenuation at some values of round-trip delay called blind ranges.…”