Open AccessM‐ary phase position shift keying with orthogonal signalling
Author(s) -
Lu Conghui,
Wu Lenan,
Chen Peng,
Wang Jiwu,
Liu Huaping
Publication year - 2015
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2014.0556
Subject(s) - demodulation , position (finance) , keying , transmission (telecommunications) , computer science , modulation (music) , phase shift keying , phase (matter) , filter (signal processing) , scheme (mathematics) , spectral efficiency , mathematics , algorithm , telecommunications , electronic engineering , topology (electrical circuits) , bit error rate , physics , engineering , decoding methods , acoustics , mathematical analysis , combinatorics , finance , quantum mechanics , beamforming , channel (broadcasting) , economics , computer vision
An improved M‐ary phase position shift keying (MPPSK) modulation, aiming to increase the spectral and energy efficiencies of existing MPPSK schemes while preserving their low demodulation complexity and error performance, is proposed in this study. Specifically, an improved MPPSK with orthogonal signals called OI‐MPPSK is presented. For the proposed OI‐MPPSK, the authors develop two demodulation schemes that employ a special impact filter (SIF): (i) the orthogonal SIF correlator (OSC) scheme, which consists of the orthogonal transmission, the SIF and a correlator; (ii) the orthogonal SIF position (OSP) scheme, which is the same as the OSC scheme except that the coherent demodulator is replaced by exploiting position‐related information. As a result of exploiting the position‐related information in the proposed OI‐MPPSK scheme, the SER performance of the OSP‐based demodulator is superior to that of the OSC‐based demodulator.