[IEEE Trans. on Wireless Communications, November 2009, pp. 5564-5574 ]
An Algorithm for Wireless Relay Placement
Jillian Cannons, Laurence Milstein, and Kenneth Zeger
Abstract
An algorithm is given for placing relays at spatial positions to
improve the reliability of communicated data in a sensor network.
The network consists of many power-limited sensors, a small set of relays, and a receiver.
The receiver receives a signal directly from each sensor and also indirectly
from one relay per sensor.
The relays rebroadcast the transmissions in order to achieve diversity at the receiver.
Both amplify-and-forward and decode-and-forward relay networks are considered.
Channels are modeled with
Rayleigh fading, path loss, and additive white Gaussian noise.
Performance analysis and numerical results are given.