1. The problem statement, all variables and given/known data Well I was just practicing matlab by going through different matlab codes available online.I found this DMT simulation.Here is the link http://cnx.org/content/m11721/latest/ Now I decided to add another block in this implementation - The RS encoder(coz usually DMT uses RS encoder and trellis encoding especially in ADSL systems).Now according to my knowledge the encoder should help reduce the bit error but thats not the case.Can somebody plz help me understand why it is so? 2. Relevant equations 3. The attempt at a solution I have attached all the matlab functions along with the RS encoder block that I have implemented and also the script files.