Capacity of Data Collection in Wireless Sensor Networks Based on Mutual Information and MMSE Estimation

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Provided by: Hindawi Publishing
Topic: Big Data
Format: PDF
The authors investigate the properties of data collection in wireless sensor networks, in terms of both capacity and power allocation strategy. They consider a scenario in which a number of sensors observe a target being estimated at Fusion Center (FC) using MInimum Mean Square Error (MMSE) estimator. Based on the relationship between mutual Information and MMSE (I-MMSE), the capacity of data collection in coherent and orthogonal Multiple Access Channel (MAC) models is derived. Considering power constraint, the capacity is derived under two scenarios: equal power allocation and optimal power allocation of both models.
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