Hesham M. al-Salman Nov 2001
Trellis Coded Modulation
Combined coding and modulation.
Error correcting capabilities without the sacrifice of
information bit rate.
e.g. if a BPSK modulation technique is used for
transmission, one can add a rate 1/2 convolutional
encoder and use QPSK modulation.
Set partitioning is used to ensure performance
The distance here is no longer Hamming but rather
Encoding and decoding is as convolutional codes,
except that one deals with symbols rather than bits.