Abstract
Energy-constrained multihop wireless links are considered, where the total power consumption is minimized under given requirements on the end-to-end bit error rate (BER). As multihop transmissions are known to be able to save transmission energy in a wireless environment, we study the optimal power scheduling schemes over intermediate hops when the source-relays-destination link can be modeled as cascaded binary symmetric channels. The problem is formulated with an end-to-end BER constraint, and the resulting power consumption is compared with that of the individual link requirement strategy where each hop assigns power under a per-link BER constraint. Results show that the proposed joint power scheduling strategy can achieve a maximum power reduction factor of M in an M-hop route.
Original language | English |
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Pages (from-to) | 2820-2824 |
Number of pages | 5 |
Journal | IEEE Transactions on Wireless Communications |
Volume | 6 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1 Aug 2007 |
Externally published | Yes |
Keywords
- End-to-end BER
- Joint power minimization
- Relay channel
ASJC Scopus subject areas
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering