Serial distributed detection for wireless sensor networks with sensor failure

Abstract

We study serial distributed detection and fusion over noisy channels in wireless sensor networks (WSNs) with bathtubshaped failure (BSF) rate of the sensors in this paper. In the previous work, we applied BSF rate to parallel topology and derived the Extension Log-likelihood Ration Test (ELRT) rule. Although ELRT is superior to traditional fusion rule without considering failed sensors, the detection performance decreases noticeably in the presence of a large number of failed sensors. In this paper, we construct a serial topology based on the target radiation energy attenuation model, apply BSF rate to serial topology, and derive the corresponding fusion rule. Unlike the parallel fusion, where the local sensors send their decisions to the Global Fusion Center (GFC) in the region of interest (ROI) directly, sensors in the serial topology transmit local decisions through multi-hop, short-range communications. At the same time, we extend ELRT to noisy channels. Finally, simulation results prove the effectiveness of the proposed fusion rules.

Collision-aware distributed detection with population-splitting algorithms

“…Proposition 4 (Necessary conditions of ρ ⋆ ) The transmission probabilities (19) must satisfy the following conditions:…”

“…, transceiver-receiver structures [10][11][12][13], transmission channels [14][15][16], network structures [17][18][19] etc. An ultimate goal of distributed detection is to derive an optimal fusion rule that is aware of this information.…”

Measurement Bounds for Compressed Sensing in Sensor Networks with Missing Data

“…In this section, we consider a multi-hop serial-star topology with m sensor nodes which are arranged in R branches with each branch consists of K hops, i.e., m = RK, as shown in Figure 3. This topology is used when a large number of low-power sensors are deployed across a vast geographical area [13], [22], [23]. When sensors are far away from the fusion center, the power consumed for reliable communication is high, and this affects the lifetime of the sensor network.…”

Optimal bit allocation scheme for distributed detection system with imperfect channels

“…In addition, it brings a heavy computing burden of the FC. Therefore, compared with centralised data fusion, distributed data fusion has been studied more and has advantages of high reliability, small communication costs, high survivability and short decision time [4, 5].…”

“…Serial topology [4, 5], parallel topology [6, 7] and tree topology [8] are three main topology architectures used in the distributed detection system. Due to the correlations of local sensors in the serial topology and tree topology, any local sensor's failure would result in the whole system's failure, which makes the system be fragile.…”