Please use this identifier to cite or link to this item:
https://doi.org/10.1109/WCL.2014.012914.130840
Title: | Optimal power allocation for wireless sensor networks with outage constraint | Authors: | Huang, C. Zhang, R. Cui, S. |
Keywords: | non-convex optimization outage probability power allocation Wireless sensor networks |
Issue Date: | 2014 | Citation: | Huang, C., Zhang, R., Cui, S. (2014). Optimal power allocation for wireless sensor networks with outage constraint. IEEE Wireless Communications Letters 3 (2) : 209-212. ScholarBank@NUS Repository. https://doi.org/10.1109/WCL.2014.012914.130840 | Abstract: | This letter considers the power allocation problem for a wireless sensor network, where N distributed sensors transmit delay-limited high rate traffic to a fusion center (FC) via orthogonal channels. The system-level outage event is defined as that the FC can decode none of the messages from the N sensors. We formulate the outage probability minimization problem with a sum power constraint, and show that this problem, albeit being non-convex, possesses an interesting «concave-convex» property in the reformulated form. By exploiting this property, the problem is shown to be solvable optimally via a one-dimension search. Its counterpart problem, i.e., minimizing the sum power consumption with a targeted outage probability, is also solved. Finally, numerical results show that the proposed power allocation can significantly improve the system performance compared to the conventional uniform power allocation. © 2012 IEEE. | Source Title: | IEEE Wireless Communications Letters | URI: | http://scholarbank.nus.edu.sg/handle/10635/82840 | ISSN: | 21622345 | DOI: | 10.1109/WCL.2014.012914.130840 |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.