Maximizing the Capacity of Large Wireless Networks: Optimal and Distributed Solutions
- 1 July 2006
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 2501-2505
- https://doi.org/10.1109/isit.2006.262061
Abstract
We analyze the sum capacity of multicell wireless networks with full resource reuse and channel-driven opportunistic scheduling in each cell. We address the problem of finding the co-channel (throughout the network) user assignment that results in the optimal joint multicell capacity, under a resource-fair constraint and a standard power control strategy. This problem in principle requires processing the complete co-channel gain information, and thus, has so far been justly considered unpractical due to complexity and channel gain signaling overhead. However, we expose here the following key result: the multicell optimal user scheduling problem admits a remarkably simple and fully distributed solution for large networks. This result is proved analytically for an idealized network. From this constructive proof, we propose a practical algorithm that is shown to achieve near maximum capacity for realistic cases of simulated networks of even small sizesKeywords
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