A trellis-coded signal is formed as shown in Figure P8.20 by encoding 1 bit by use of a rate 1/2 convolutional code, while 3 additional information bits are left uncoded. Perform the set partitioning of a 32-QAM (cross) constellation, and indicate the subsets in the partition. By how much is the distance between adjacent signal points increased as a result of partitioning?
