PROJECT TITLE :
Minimizing Operational Power Cost in Remote-Area Wireless Sensor Networks With a DF Relay and Outage Constraints
For wireless multi-sensor networks with a single decode-and-forward (DF) relay, this letter provides an optimal power allocation that minimizes the overall add of costs of sensor- and relay-transmitting powers and recharging the battery in the sensors, which is remarked operational power value. We assume a distant-space wireless sensor application and hence that the direct communication between the sensors and a destination does not exist. Motivated by an observation that the proposed power allocation could be a function of the placement of relay, we additionally give a close to-optimal location of the relay that minimizes the operational value. Optimality of the proposed solutions is verified with numerical investigation. Numerical results show that the proposed power allocation saves the full value by nearly up to 15p.c compared to the previous supply-sum-power minimizing allocation when the relay location is mounted. Furthermore, the proposed relay location is shown to avoid wasting the price by about 59-seventy seven% compared to randomly-chosen relay locations.
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