Cooperative Information Aggregation Based Distributed Sequential Estimation in Wireless Sensor Networks
The Cooperative Information Aggregation (CIA) scheme for distributed estimation was proposed in the authors' past research considering the realistic Wireless Sensor Network (WSN) environments. In the existing CIA scheme, a multi-bit quantizer is applied at all nodes, however, each node only transmits one predetermined bit of its quantized observation to the Fusion Center (FC) to economize the energy expense and the communication bandwidth. In this paper, the CIA based distributed Sequential estimation (CIAS) scheme is proposed. In the proposed CIAS scheme, an instruction message is designed to be sent from the FC to the nodes sequentially to guide each node's transmitted bit selection.