A Trellis-Coded Modulation Scheme with a Novel Expanded 16-Dimensional Constant Envelope Q2PSK Constellation

This paper presents a TCM scheme that uses a new expanded 16-Dimensional Constant Envelope Q2PSK constellation along with a simple convolutional encoder of rate 2/3. An effective gain of 2.67 dB over uncoded CEQ2PSK is achievable with low complexity, and without suffering from constellation expansion penalty. Larger coding gains are easily achieved with encoders of higher rates. In addition, an optimal hardware implementation of the required decoders is described.

[1]  Debabrata Saha.  Channel coding with quadrature-quadrature phase shift-keying (Q2PSK) signals , 1990, IEEE Trans. Commun..

[2]  J. Bibb Cain,et al.  Error-Correction Coding for Digital Communications , 1981 .

[3]  Andrew J. Viterbi,et al.  Error bounds for convolutional codes and an asymptotically optimum decoding algorithm , 1967, IEEE Trans. Inf. Theory.

[4]  G. Ungerboeck,et al.  Trellis-coded modulation with redundant signal sets Part II: State of the art , 1987, IEEE Communications Magazine.

[5]  Gottfried Ungerboeck,et al.  Channel coding with multilevel/phase signals , 1982, IEEE Trans. Inf. Theory.

[6]  UngerboeckG..  Trellis-coded modulation with redundant signal sets Part II , 1987 .

[7]  G. David Forney,et al.  Efficient Modulation for Band-Limited Channels , 1984, IEEE J. Sel. Areas Commun..

[8]  J. Bibb Cain,et al.  Convolutional Code Structure and Viterbi Decoding , 1981 .

[10]  Theodore G. Birdsall,et al.  Quadrature-quadrature phase-shift keying , 1989, IEEE Trans. Commun..

[11]  Edit J. Kaminsky,et al.  An optimum hardware detector for constant envelope quadrature-quadrature phase-shift keying (CEQ/sup 2/PSK) , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[12]  F. Ashcroft,et al.  VIII. References , 1955 .

[13]  Edit J. Kaminsky,et al.  TCM without constellation expansion penalty , 2002, Journal of Communications and Networks.

[14]  Lee-Fang Wei,et al.  Trellis-coded modulation with multidimensional constellations , 1987, IEEE Trans. Inf. Theory.

[15]  R. Carrasco,et al.  Trellis coded Q2PSK signals. I: AWGN and nonlinear satellite channels , 1994 .

[16]  G. David Forney,et al.  Coset codes-I: Introduction and geometrical classification , 1988, IEEE Trans. Inf. Theory.