45.2% Energy efficiency improvement of UWB IR Tx by use of differential PPM in 180nm CMOS

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This paper discusses how Differential Pulse Position Modulation (DPPM) can increase the energy efficiency of an UWB impulse radio transmitter when compared to On-Off Keying (OOK). In DPPM, data words are coded in time intervals between consecutive pulses and it saves energy as less pulses are transmitted per bit. A method is shown for minimizing the energy con sumption per bit of a DPPM transmitter by choosing an optimal data word length. Measurement results show an energy efficiency improvement of 45.2%. The jitter of a low-power, low-performance reference clock used in the modulation could cause an unsatisfactory bit error ratio (BER). However, the measurements show that a 1.4 μW, 10 MHz ring oscillator (RO) can enable a BER better than 10-6. The measured transmitter has been implemented in a 180 nm CMOS technology.


Original languageEnglish
Title of host publicationISCAS 2016 - IEEE International Symposium on Circuits and Systems
Publication statusPublished - 29 Jul 2016
MoE publication typeA4 Article in a conference publication
EventIEEE International Symposium on Circuits and Systems - Montreal, Canada
Duration: 22 May 201625 May 2016

Publication series

NameIEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4302
ISSN (Electronic)2158-1525


ConferenceIEEE International Symposium on Circuits and Systems
Abbreviated titleISCAS
Internet address

ID: 7189345