Performance analysis of an adaptive-MCM system with combining AMC and MIMO schemes

In this paper, we proposed a system that combines AMC and MIMO schemes. While conventional AMC system changes only the coding rate and modulation, the proposed AdaptiveMCM system also selects the MIMO scheme (diversity, multiplexing) according to channel condition. Furthermore, by applying pre-coding and antenna subset-selection we not only produce optimal performance but also increase the data rate. In case of Non-Adaptive-MCM, the simulation results show that even thought, this system secures enough SNR, and its maximum throughput is limited. As for the Adaptive-MCM System, the simulation shows an overall average data rate increase, and a maximum throughput of 1440kbps that can be achieved because the schemes corresponding to the MCM levels are assigned dynamically. This probes that the Adaptive-MCM system increases the average data rate by improving the trade-off between SNR and throughput.