trellis coded modulation?

here is a tutorial on it and for more check this site. hxxp://www.complextoreal.com/tutorial.htm

Whay you upload file, that is free available from your posted link ?
http://www.complextoreal.com/chapters/tcm.pdf

Very good article from TCM

Heres Ungerboeck's original paper on the topic. It provides the clearest insight and is the best material for proper understanding of TCM. ( Not for Beginners! ) Hope it helps some of you.

thanks for the original paper "ceres101"