Turbo trellis coded modulation: from k/n = 1/3 to k/n = 2/3 and 3/4 with good performance
 
 
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 puncturing the ‘classical’ turbo code scheme and using modulation with higher constellations                    (16-QAM, 64-QAM)
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- intelligent puncturing scheme taking into account the mapping	 ? ‘pragmatic approach’ (Berrou)
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- turbo code working on symbol level? ‘symbol based trellis coded modulation 	(Robertson, Benedetto)
 
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