IEEE Transactions on Signal Processing, vol. 60, no. 12, pp. 6713-6718, Dec. 2012.

Joint Temporal Statistics of Interference in Decentralized Wireless Networks

Kapil Gulati (1), Brian L. Evans (1), and Srikathyayani Srikanteswara (2)

(1) Wireless Networking and Communications Group, Engineering Science Building, The University of Texas at Austin, Austin, TX 78712 USA
gulati.k@gmail.com - bevans@ece.utexas.edu.

(2) System Technology Lab, Intel, Hillsborough, Oregon USA.

Paper Draft

Intereference Mitigation Research at UT Austin

Intereference Modeling and Mitigation Toolbox

Abstract

Characterizing interference statistics is central to the design and analysis of both physical layer and medium access control layer techniques to mitigate interference in a wireless network. The applicability of interference statistics, however, is limited by the assumptions adopted to derive the statistics in closed-form. Common assumptions for a decentralized wireless network include temporally independent user locations and an unbounded pathloss function. In this paper, we derive the joint temporal statistics of interference that capture the temporal correlation in the network along with the realistic assumption of a bounded pathloss function. The closed-form statistics are asymptotically exact for low tail probabilities, and match closely in simulations even when the tail probability is fairly high. The primary contributions are to
  1. show that joint interference statistics follow a multivariate Gaussian mixture distribution under the assumption of a bounded pathloss function, and
  2. characterize the joint tail probability decay behavior for both bounded and unbounded pathloss functions.

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Last Updated 12/12/12.