Title :
A Novel Expanded 16-Dimensional Constant Envelope Q2PSK Constellation
Author :
Quinteros, Milton I. ; Cartwright, Kenneth V. ; Kaminsky, Edit J. ; Gallegos, Ricardo U.
Author_Institution :
Dept. of Electr. Eng., Univ. of New Orleans, New Orleans, LA
Abstract :
We introduce a 16-dimensional constant-amplitude constellation that is generated by concatenating either four constant envelope quadrature-quadrature phase shift keying (CEQ2PSK) symbols from Saha and Birdsall or four CEQ2PSK symbols recently discovered by Cartwright and also introduced here. Our new constellation doubles the number of points available for data transmission without decreasing the distance between points or increasing energy, and may therefore be used in a trellis coded modulation (TCM) system without constellation expansion penalty. Because the new constellation has constant envelope, the modulation scheme becomes very attractive for nonlinear channels such as the magnetic recording channel or the satellite channel with traveling wave tube amplifiers.
Keywords :
amplitude modulation; multidimensional signal processing; quadrature phase shift keying; trellis coded modulation; 16-dimensional constant envelope Q2PSK constellation; Birdsall; CEQ2PSK symbols; Saha; constant-amplitude constellation; constellation expansion; data transmission; magnetic recording channel; multidimensional constellation; nonlinear channels; quadrature-quadrature phase shift keying symbols; satellite channel; traveling wave tube amplifiers; trellis coded modulation system; Bandwidth; Bit rate; Data communication; Educational institutions; Lakes; Modulation coding; Phase modulation; Phase shift keying; Pulse shaping methods; Quadrature phase shift keying; Multidimensional constellation; constant envelope; constellation expansion; quadrature-quadrature phase shift keying; trellis coded modulation;
Conference_Titel :
Region 5 Conference, 2008 IEEE
Conference_Location :
Kansas City, MO
Print_ISBN :
978-1-4244-2076-6
Electronic_ISBN :
978-1-4244-2077-3
DOI :
10.1109/TPSD.2008.4562732
