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To minimize energy consumption, efficient broadcasting in ad hoc networks requires the selection of small sets of forwarding nodes and the use of small transmission radii. However, the physical-layer characteristics of radio links are such that receivers may not be able to decode packets sent to them, even without multiple access interference. The authors present an analytical model to show that the transmission radii used for nodes can be used to establish a tradeoff between minimizing energy consumption and ensuring network coverage.
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