Efficient Interactive Multicast - Utilizing

In the terrestrial digital TV systems broadcasting is employed, meaning that all TV programs are sent over all transmitters, also where there are no viewers. This is inefficient utilization of spectrum and transmitter equipment. Applying interactive multicasting over DV approach that would substantially reduce the spect to deliver a certain amount of TV programs be achieved by Dynamic single-frequency network formations, which can be implemented using PARPS (Packet and Resource Plan Scheduling). heterogeneous program selection model system of four coordinated transmitters, assumptions, IP multicasting over non-continuous transmission DSFN gives 1740% increase in multiuser system spectral efficiency (MSSE) in (users·bit/s)/Hz/site broadcasting over SFN.