Name
Title | ||
|---|---|---|
Quantized fusion rules for energy-based distributed detection in wireless sensor networks |
Abstract | ||
|---|---|---|
We consider the problem of soft decision fusion in a bandwidth-constrained wireless sensor network (WSN). The WSN is tasked with the detection of an intruder transmitting an unknown signal over a fading channel. A binary hypothesis testing is performed using the soft decision of the sensor nodes (SNs). Using the likelihood ratio test, the optimal soft fusion rule at the fusion center (FC) has been shown to be the weighted distance from the soft decision mean under the null hypothesis. But as the optimal rule requires a-priori knowledge that is difficult to attain in practice, suboptimal fusion rules are proposed that are realizable in practice. We show how the effect of quantizing the test statistic can be mitigated by increasing the number of SN samples, i.e., bandwidth can be traded off against increased latency. The optimal power and bit allocation for the WSN is also derived. Simulation results show that SNs with good channels are allocated more bits, while SNs with poor channels are censored. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/SSPD.2014.6943313 | Sensor Signal Processing for Defence |
Keywords | Field | DocType |
decision theory,fading channels,quantisation (signal),sensor fusion,signal detection,statistical testing,wireless sensor networks,fc,sns,wsn,bandwidth-constrained wireless sensor network,binary hypothesis testing,bit allocation,channel allocation,energy-based distributed detection,fading channel,fusion center,likelihood ratio test,null hypothesis,optimal power allocation,optimal soft fusion rule,quantized fusion rules,sensor nodes,soft decision fusion,soft decision mean,suboptimal fusion rules,test statistic,weighted distance | Key distribution in wireless sensor networks,Test statistic,Likelihood-ratio test,Fading,Communication channel,Fusion rules,Real-time computing,Fusion center,Wireless sensor network,Mathematics | Journal |
Volume | Citations | PageRank |
abs/1506.01210 | 2 | 0.38 |
References | Authors | |
9 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Edmond Nurellari | 1 | 23 | 3.88 |
| Sami Aldalahmeh | 2 | 22 | 3.85 |
| Mounir Ghogho | 3 | 1072 | 113.80 |
| Desmond C. McLernon | 4 | 229 | 36.55 |