Abstract
In this paper, the energy efficiency of multi-input single-output and orthogonal frequency division multiplexing (MISO-OFDM) communication systems with power and capacity constraints is investigated. By formulating the power allocation problem of MISO-OFDM communication systems, the minimum subchannel transmission power is analyzed with power and capacity constraints. Simulation results indicate that there exists a specific minimum subchannel capacity threshold. Moreover, the energy efficiency of MISO-OFDM communication systems starts to increase only when the minimum subchannel capacity exceeds the specific threshold. © 2011 Springer Science+Business Media, LLC.
Original language | English |
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Pages (from-to) | 29-35 |
Number of pages | 7 |
Journal | Mobile Networks and Applications |
Volume | 17 |
Issue number | 1 |
DOIs | |
Publication status | Published - 25 Feb 2011 |
Keywords
- capacity analysis
- energy efficiency
- multi-input single-output (MISO)
- orthogonal frequency division multiplexing (OFDM)