Title :
Novel 6-PSK trellis codes
Author :
Fettweis, Gerhard
Author_Institution :
Teknekron Commun. Syst., Berkeley, CA, USA
Abstract :
The use of trellis coded modulation leads to the requirement of a twofold increase in the channel alphabet size, e.g., from 4-PSK (phase shift keying) to 8-PSK. It is shown that multidimensional 6-PSK trellis codes can be designed which achieve the same spectral efficiency at a reduced channel symbol alphabet size. This allows for easier phase synchronization over 8-PSK. Examples of rotationally invariant as well as noninvariant codes are presented
Keywords :
convolutional codes; phase shift keying; synchronisation; trellis coded modulation; channel symbol alphabet size; multidimensional 6-PSK trellis codes; noninvariant codes; phase synchronization; rotationally invariant codes; spectral efficiency; trellis coded modulation; Constellation diagram; Convolutional codes; Decoding; FETs; Modulation coding; Phase modulation; Phase shift keying; Quadrature amplitude modulation; Signal processing; Viterbi algorithm;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397238
