Title :
Rotative quadrature phase-shift keying
Author :
Liu, Jiangchuan ; Kim, Jung-Ho ; Kwatra, S.C.
Author_Institution :
Toledo Univ., OH, USA
fDate :
6/4/1992 12:00:00 AM
Abstract :
A rotative quadrature phase-shift keying (RQPSK) modulation scheme is proposed. By rotating the QPSK signal constellation by pi /2 either clockwise or anticlockwise during a symbol duration, the conventional QPSK scheme can be modified to transmit 3 bits per symbol to achieve both power and bandwidth efficiency.
Keywords :
phase shift keying; QPSK signal constellation; RQPSK modulation scheme; bandwidth efficiency; power efficiency; rotative quadrature phase-shift keying;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920692
