A time-domain propagation model of the UWB indoor channel in the FCC-compliant band 3.6 - 6 GHz based on PN-sequence channel measurements

Cassioli, Dajana; Durantini, A.

doi:10.1109/vetecs.2004.1387945

Cited by 19 publications

(13 citation statements)

References 15 publications

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“…A particular behavior is observed for the SSA-PDP obtained by measurements in LOS conditions (both transmitter and receiver within room 4184). The three arriving clusters present almost the same shape, slope, and time duration, as shown in Figure 5 [15].…”

Section: The Statistics Of Path Gainsmentioning

confidence: 59%

Measurements, modeling and simulations of the UWB propagation channel based on direct‐sequence channel sounding

Cassioli

Durantini

2005

Wireless Communications

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The paper presents the statistical model for the ultra-wideband (UWB) indoor channel having a bandwidth of 2.4 GHz and a central frequency of 4.78 GHz. The model is based on propagation experiments performed in different rooms on a floor of an office-laboratory building. Within each room the receiver antenna is automatically moved over a square grid of 25 Â 25 locations spaced 2 cm apart. A correlative channel sounding technique is employed; actually the carrier is modulated by a train of short duration (0.4 ns) pulses shaped by a PN-sequence. After coherently demodulating the detected signals and removing the PN-sequence modulation, we post-process the extracted channel impulse responses by best-fit procedures to set up a statistical tapped delay line model (STDL) of the UWB indoor channel. We characterize the path loss for line-of-sight (LOS) and non-line-of-sight (NLOS) conditions by distance-power laws and the shadowing by lognormal distributions. A clustered structure is observed in the average power-delay profiles; rays arrive at the receiver in groups, exponentially decaying with different decay constants. The small-scale effects are modeled by the Gamma distribution since it verifies with a 95%-confidence interval both the Chi-Square test and the Kolmogorov-Smirnov test applied to the experimental data. The shape parameters of such Gamma distributions are truncated Gaussian variables spreading in the range from 1 to 3. An implementation of the derived STDL model is finally proposed and a comparison between the simulated and the measured statistics is performed proving the validity of our approach.

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Section: The Statistics Of Path Gainsmentioning

confidence: 59%

Measurements, modeling and simulations of the UWB propagation channel based on direct‐sequence channel sounding

Cassioli

Durantini

2005

Wireless Communications

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“…The interested reader is referred to [13] for a more complete statistical characterization of the UWB indoor channel based on these experimental data.…”

Section: The Path Loss Modelsmentioning

confidence: 99%

UWB propagation measurements by PN-sequence channel sounding

Durantini

Ciccognani

Cassioli

2004

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577)

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modulated by a train of pulses, each having a duration of 0.4 ns, shaped by a pseudo noise (PN) sequence, covering the band 3.6-6 GHz. The transmitter is moved in six different positions on the floor, while the receiver is moved within each room by a digitally controlled positioner in 625 different locations arranged in a square grid of 25 × 25 points with 2 cm spacing. A total of 625 × 16 profiles in non-line-of-sight (NLOS) and 625 in line-of-sight (LOS) conditions are recorded within the rooms. LOS measurements are made in the corridor in 11 locations at incremental spacing of 1 m. We describe the measurement technique as well as the procedure by which we process the experimental data to extract the amplitude, phase and delay associated to each path of the channel impulse responses. Finally, we derive LOS and NLOS path-loss models

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“…However, all of them treated office [8], [9], [10], [14], [15], [16], [17], [18], [19] or residential [10], [20], [21] environments. To our knowledge, no UWB measurements in industrial environments have been published yet.…”

Section: Introductionmentioning

confidence: 99%