Characterization of path loss and delay spread of 60-GHz UWB channels vs. frequency

Measurements of the 60 GHz ultra-wideband (UWB) indoor channel done in a modern office building at the University of L'Aquila, Italy, are presented. The UWB channel sounder is based on a PN-sequence correlation technique with a pulse width of 0.8 ns. Signals are recorded in different locations in line-of-sight and non-line-of-sight scenarios, and for each location the receiver is moved over a grid of 9 × 9 positions, in order to characterize both the large and the small scale behaviors. Samples of the channel impulse response are recorded at six different carrier frequencies spanning the bands from 54 to 59 GHz and from 61 to 64 GHz, allowing investigations on the dependence of channel parameters on frequency. In this paper, based on these experimental data, we analyze the behavior of the path loss and delay spread of these UWB 60-GHz signals as a function of frequency.

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