Please use this identifier to cite or link to this item:
|Title:||Optimal power allocation for wireless sensor networks with outage constraint|
Wireless sensor networks
|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|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jul 19, 2018
WEB OF SCIENCETM
checked on Jun 25, 2018
checked on Apr 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.