Analysis of multipath distribution characteristics for device-to-device scenarios in urban very high-rise environment

In this paper, we analyze temporal and spatial distribution characteristics of multipath components considering for device-to-device (D2D) communications scenarios in urban very high-rise environments. Using the 3.7GHz wideband channel sounder and uniform circular array antennas, a channel measurement campaign has been performed at Gangnam of Seoul in Korea which the place very high-rise buildings are concentrated in. From measured data, statistical channel parameters, e.g. the values of 10%, 50% and 95% of cumulative density function (CDF) for the delay and angular spread are extracted. Moreover, in a specific region having the larger delay spread than expected, we investigate the departure and arrival directions of propagated multipath components geometrically through an additional measurement and prove our results.