Optimal Relay Function in the Low-Power Regime for Distributed Estimation Over a MAC
Marco Guerriero, Stefano Maranò, Vincenzo Matta, Peter Willett · IEEE Transactions on Signal Processing · 2010
A random parameter is estimated by a distributed network of sensors that communicate over a common multiple-access channel (MAC). A MAC implies an additive fusion rule, and the goal here is to design a power-constrained forwarding strategy and fusion center post-processing. To get an explicit solution we appeal to asymptotics, meaning that we design thelocallyoptimal scheme for the limiting case that the received power goes to zero.