A Lagrangian Approach for the Optimal Placement of Wireless Relay Nodes in Wireless Local Area Networks

The throughput capacity of WLANs can be improved the authors propose an optimization formulation based on Lagrangian relaxation and a subgradient algorithm to compute the best placement of a fixed number of Relay Nodes (RNs) in a WLAN. The authors apply this optimization framework to a multi-rate WLAN based on the IEEE 802.11g standard under Rayleigh fading. The authors then study the expected throughput capacity of a WLAN with relay infrastructure and investigate how the optimal placement of RNs is affected by the number of RNs, path-loss characteristics, and the traffic pattern.

Provided by: University of Toronto Topic: Networking Date Added: Jan 2011 Format: PDF

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