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A 60-GHz radio is an attractive technology in wireless home networks because it can provide high data rate up to a few gigabits per second. A 60-GHz network generally uses directional antennas and has a problem of neighbor discovery (ND), although it has an advantage of high data transmissions. In particular, if a directional antenna is used in self-organized wireless ad hoc networks, the ND time...
In this paper, we analyze the energy efficiency of IEEE 802.11 power save mode in multi-rate environments. We consider two transmission schedules: random and rate-aware schedules. Numerical results demonstrate that the rate-aware schedule can reduce the expected idle time by 36%.
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