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The authors analyze the benefits of infrastructure support in improving the throughput scaling in networks of n randomly located wireless nodes. The infrastructure uses multi-antenna Base Stations (BSs), in which the number of BSs and the number of antennas at each BS can scale at arbitrary rates relative to n. They introduce two multi-antenna BS-based routing protocols and analyze their throughput scaling laws. Two conventional schemes not using BSs are also shown for comparison. In dense networks, they show that the BS-based routing schemes do not improve the throughput scaling.
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