Review on Existing Methods of Adaptive Modulation and Power Allocation using MIMO OFDM

The increasing demand for transmitting information over a wireless channel has led to the emergence of Multiple Input Multiple Output (MIMO) technology. Adaptive modulation selection plays a major role due to the progressing variation of wireless channel condition. The performance of Multiple Input Multiple Output (MIMO) Orthogonal frequency division multiplexing (OFDM) system is improved through detecting low complexity signal and with minimum power allocation. In this paper the existing methods of Adaptive Modulation and Power Allocation using MIMO OFDM is reviewed and the performance is compared in terms of BER(Bit Error Rate) and Spectral Efficiency and throughput.