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The authors investigate the Chernoff Information Loss (CIL) characteristics in Wireless Sensor Networks (WSNs) as the sensor attempts to send a 1-bit information about the presence or absence of a Phenomenon-Of-Interest (POI) to a remote data sink through either the Single-Hop (SH) or Multi-Hop (MH) wireless connectivity. Firstly, they describe the sensing and communication processes by using the cascaded Discrete Memoryless Channels (DMCs), which can be represented as an Equivalent Sensing Channel (ESC). They then define a typical ESC and derive its Chernoff information.
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