Title :
64-state TCM for spectrally efficient space communications [Trellis coded modulation]
Author :
Carden, Frank ; Ross, Michael D.
Author_Institution :
Center for Telemetry Res., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
Rate 2/3 8-PSK codes of 4, 8, 16, and 64 states were tested by simulation. The codes used are those found in Ungerboeck´s original search. The results found were in close agreement with those predicted by analytical means in literature. The Ungerboeck codes of 8, 16, and 64 states show coding gains of 0.2, 0.3, and 0.86 dB, respectively, relative to the four state code. Worthwhile gains are obtained in increasing the number of states of the encoder up through 64
Keywords :
codes; decoding; encoding; space communication links; 64-state TCM; BOSS software package; CAD; PSK; QAM; Trellis coded modulation; Ungerboeck codes; decoder; eight state code; encoder; four state code; quadrature amplitude modulation; sixteen state code; space communications; Bandwidth; Convolutional codes; Forward error correction; Modulation coding; Phase shift keying; Quadrature amplitude modulation; Quadrature phase shift keying; Redundancy; Satellites; Space exploration;
Conference_Titel :
Aerospace and Electronics Conference, 1991. NAECON 1991., Proceedings of the IEEE 1991 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-0085-8
DOI :
10.1109/NAECON.1991.165743
