Wi-Fi (802.11) White Papers
On the Use of Adaptive OFDM to Preserve Energy in Ad Hoc Wireless Networks
Overview Orthogonal frequency division multiplexing (OFDM) is the physical layer in emerging wireless local area networks that are also being targeted for ad hoc networking. Mobile devices in ad hoc networks need to conserve their energy because of the limited battery power. Adaptive OFDM is a technique that can improve the performance of OFDM in terms of increasing the capacity for a given transmit power by exploiting the channel condition over a link. However, adaptive OFDM can be also exploited in ad hoc networks to improve the energy performance of mobile devices. This paper evaluates the improvement in performance of adaptive OFDM over non-adaptive OFDM in ad hoc networks using simulations.
| Publisher | University of Pittsburgh | File Format | PDF, requires Acrobat Rdr 5 |
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| Date Published | November 2003 | Downloads | 3 |
| Format | White Papers | ||
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