Energy Consumption Improvement of OOK Transmitter Based on Minimum Energy Coding
Résumé
We propose the use of Minimum Energy (ME) coding to improve the energy efficiency of an OOK transmitter. For the analysis, the power consumption model is based on a circuit which can completely switch off the transmitter during the transmission of 0 and which has an energy efficiency of 52 pJ/bit. It is shown that ME coding provides an improvement of energy efficiency to 30 pJ/bit for coding size k = 3. The improvement is more important when k increases, at the price of a reduced spectral efficiency and range decrease. Finally, the expression of an optimal coding size satisfying a given transmit range constraint is determined.