Cognitive radio based spectrum assignment for heterogeneous multicast terrestrial communication systems with different transmission rate requirements

This paper investigates two channel assignment schemes that select channels based on optimizing the coverage area supported by a multicasting terrestrial network. It considers the interaction of two different channel assignment schemes -Channel Priority and Maximal Difference when used together. It is found that it is good to combine different schemes together because the mixed schemes can exploit the best features of each individual scheme. When applying different transmission rates in each scheme, the interaction still remains positive. In these circumstances the Channel Priority scheme will automatically select additional channels to cope with the increased SINR threshold.