Date Added: Feb 2010
Adaptive Modulation and Coding (AMC) is attracting research interest in wireless Multicast Broadcast Services (MBS). AMC increases the system throughput by utilizing possible good channel states instead of using robust modulation and coding schemes. A model for the AMC in an MBS system with multiple MBS groups is provided, and stochastic analysis using Markov chain is also applied for modeling analysis. Simulation results show extremely high correspondence to the proposed mathematical model. A conventional MBS scheme applies robust modulation and coding to transmit at a low data rate, which causes extra overheads. To avoid such a waste on radio bandwidth and improves system performance, Adaptive Modulation and Coding (AMC) has been applied to MBS recently.