Patent ID: 9564939
Date: 2017-02-07
CPC Classifications: G05F,H04B,H04L,H04W,Y02D

Claim:
1. A wireless system, comprising: an energy harvesting electrical power source, capable of producing an available output power for an indefinite period of time and having a defined peak power characteristic; and a power efficient receiver configured in operation to enable a ratio of peak-to-average power consumption of the available output power of the energy harvesting power source to be minimized and to enable energy consumption of the available output power of the energy harvesting power source to be maximized per unit time and capable of a data reception rate determined, at least in part, by the available output power; a power efficient transmitter, configured in operation to enable a ratio of peak-to-average power consumption of the available output power of the energy harvesting power source to be minimized and to enable energy consumption of the available output power of the energy harvesting power source to be maximized per unit time and operable to transmit data at a data transmission rate to the receiver, wherein the data transmission rate is determined, at least in part, by the available output power, wherein a range between the transmitter and the receiver is estimated from the data reception rate of the receiver and wherein a received signal strength indication (RSSI) value is not needed to estimate the range.