Energy optimisation of an OOK transmitter using high-order orthogonal modulation

In this paper, we show that high-order orthogonal modulation can be used to optimize the power consumption of an energy efficient On-Off Keying (OOK) transmitter for short range wireless sensor applications. Our work is based on the characteristics of a high performance OOK modulator that completely...

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Bibliographic Details
Published in:International journal of electronics letters 2019-04, Vol.7 (2), p.182-193
Main Authors: Peng, Yue, Andrieux, Guillaume, Diouris, Jean-François, Diop, Magaye
Format: Article
Language:English
Subjects:
Electronics
Engineering Sciences
Online Access:Get full text
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Summary:In this paper, we show that high-order orthogonal modulation can be used to optimize the power consumption of an energy efficient On-Off Keying (OOK) transmitter for short range wireless sensor applications. Our work is based on the characteristics of a high performance OOK modulator that completely turns off during the transmission of zeros and provides energies per bit in the picojoule range. We take into account the limitations of the circuit in terms of maximum modulation rate and constant output power. Based on a bit error rate performance analysis and a circuit energy model, we propose an original approach to find the energy optimal modulation order for a given range constraint.When considering only the transmitter power consumption, a large improvement in energy per bit can be obtained by using this optimization. When considering a residual power consumption during the transmitter off state, an improvement is still obtained but is less important.
ISSN:2168-1724
DOI:10.1080/21681724.2018.1477184