Open AccessGeneralised constant‐envelope DualQPSK and AltBOC modulations for modern GNSS signals
Author(s) -
Zhang Kai
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.2095
Subject(s) - gnss applications , envelope (radar) , constant (computer programming) , electronic engineering , physics , computer science , telecommunications , acoustics , remote sensing , engineering , global positioning system , geology , radar , programming language
Two QPSK‐like global navigation satellite system signals with unequal power are multiplexed as a constant‐envelope signal analytically. It is further generalised as an extended AltBOC signal that has unbalanced power on the upper and the lower sidebands by the phase rotating technique. The modulations provide additional power control flexibility than the traditional DualQPSK and AltBOC signals and are demonstrated as optimum analytical implementations that maximise the power efficiency.