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As the number of wireless devices sharing a radio band increases, so does the number N of potential co-channel interferers. The receiver performance is then strongly dependent on the total received interference power. While the statistics of this power have previously been studied under the channel assumption of independent shadowing, it is easy to show that for large N the correlation among the shadowing paths cannot be neglected. While this correlation may be simulated by matrix decomposition, the authors show that an alternative approximately equivalent algorithm using shadowing fields can achieve simulation performance that scales much better with N and has additional advantages.
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