Oestges, Claude
[UCL]
Paulraj, Arogyaswami
[Stanford University]
This paper describes a multidimensional model of the fixed wireless propagation channel, which is well suited to system-level simulations. The proposed method yields realistic predictions of various channel characteristic parameters as a function of the range and antenna beamwidths, in agreement with experimentally observed results. The originality of the approach is that the power-delay profile for omnidirectional antennas at the edge of the cell is used to predict the time-varying channel over the whole cell for any antenna beamwidth. The method is based on a set of spatially distributed scatterers, which can be scaled to any range within the cell. The time-varying channel impulse response is then calculated as the combination of all scattered contributions by means of a ray approximation. The multidimensionality of the channel model is explored through predictions of signal statistics, level-crossing rate, delay-spread and angle-spread. In contrast to most existing models, the impact of range and antenna beamwidth is clearly addressed and found to be close to experimentally observed behaviors.
Bibliographic reference |
Oestges, Claude ; Paulraj, Arogyaswami. Range and antenna beamwidth dependencies in multidimensional fixed wireless channels. In: IEEE Transactions on Wireless Communications, Vol. 3, no. 1, p. 128-137 (2004) |
Permanent URL |
http://hdl.handle.net/2078.1/40429 |