Range and antenna beamwidth dependencies in multidimensional fixed wireless channels
(2004) IEEE Transactions on Wireless Communications — Vol. 3, n° 1, p. 128-137 (2004)
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- Abstract
- 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.
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Citations
Oestges, C., & Paulraj, A. (2004). Range and antenna beamwidth dependencies in multidimensional fixed wireless channels. IEEE Transactions on Wireless Communications, 3(1), 128-137. https://doi.org/10.1109/TWC.2003.821136 (Original work published 2004)