Title :
Analysis and design of rotationally invariant trellis codes
Author :
Tung, Chien-Cheng ; Livingston, Jay N.
Author_Institution :
Texas A&M Univ., College Station, TX, USA
fDate :
29 Nov-2 Dec 1993
Abstract :
Describes a method for transforming a given trellis code into a rotationally invariant code with little of no loss in performance. The method uses the state transition matrix and the rotational symmetries of the constellation to accomplish this. We demonstrate it by transforming the 8-state Ungerboeck code to a 90° rotationally invariant code with the same free Euclidean distance
Keywords :
matrix algebra; phase shift keying; trellis codes; 8-state Ungerboeck code; PSK; free Euclidean distance; rotational symmetries; rotationally invariant trellis codes; state transition matrix; trellis code; Constellation diagram; Convolutional codes; Encoding; Euclidean distance; Lattices; Modulation coding; Performance loss; Phase modulation; Phase shift keying; Quadrature amplitude modulation;
Conference_Titel :
Global Telecommunications Conference, 1993, including a Communications Theory Mini-Conference. Technical Program Conference Record, IEEE in Houston. GLOBECOM '93., IEEE
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-0917-0
DOI :
10.1109/GLOCOM.1993.318442
