In LTE standard, Releases 8 and 9, interference randomization
through scrambling of transmitting signals is the
only interference management strategies that were considered
and there were no advanced co-channel interference
management strategies. But in 3GPP LTE-Advanced,
Release 10 and 11, through probability readings, it was
realized that there was a space for additional performance
improvement at the cell edges with the help of synchronized
transmission among multiple transmitters dispersed over
different cell sites [