There are four transmitters in a CDMA network - Station A, Station B, Station C and Station D. Station A and B are sending a 1 bit and station D is sending a 0 bit. Station C is silent. The Walsh table for a one-chip sequence has a value -1. Using this one-chip sequence, derive the codes for the four stations by developing a 4-dimensional Walsh table. Show the process of encoding and decoding the data with the generated chip sequence for all 4 stations.