Wireless Pers Commun https://doi.org/10.1007/s11277-018-5860-9 Efﬁcient Hybrid Modulation/Demodulation Scheme Using Differential Encoding/Decoding for UWB- IR 1 2 1 3 • • • • Nayoung Lee Jaeah Cha Hyobeen Park Young-Hwan You Seongjoo Lee Springer Science+Business Media, LLC, part of Springer Nature 2018 Abstract An efﬁcient hybrid modulation/demodulation scheme using a short duration pulse in the time-domain for ultra wideband-impulse radio (UWB-IR) systems is proposed. The proposed modulation scheme is pulse position modulation (PPM) of the UWB-IR standard modulation combined with differential encoding, and non-coherent energy detection (ED) adopting differential decoding is proposed for demodulation. Differential encoding makes a pulse that can transfer additive information bit into bits assigned in one symbol without increasing the symbol period. The BER performance is evaluated for 2-PPM, 4-PPM and the proposed HD-2PPM (which has the same symbol duration as BPPM and includes two information bits per symbol). The error performance indicates that the proposed scheme is an outstanding 0.5 dB over existing schemes of UWB-IR, and the data-rate performance shows that the proposed method has higher spectral efﬁciency than conventional methods that occupy the same duration as the proposed scheme. & Seongjoo Lee email@example.com Nayoung Lee firstname.lastname@example.org Jaeah Cha email@example.com Hyobeen Park firstname.lastname@example.org Young-Hwan
Wireless Personal Communications – Springer Journals
Published: May 30, 2018
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