Performance Analysis on various Diversity Schemes with Channel Equalization and Estimation Techniques in MIMO OFDM system

Systems that communicate with Multiple Input Multiple Output (MIMO) channel integrated with Orthogonal Frequency Division Multiplexing (OFDM) is well proven to avoid most of the interference thereby enhancing the system capacity. This combination achieves high data rates with a very good quality of services and fewer bit error rates. Different diversity schemes are used to add high values to the Signal to Noise Ratio (SNR) of the system. Channel equalization methods detect the transmitted signal sent over a noisy wireless channel and reduce the errors to the least value. Channel estimation techniques show superior significance because it estimates the sent signal using the received signal. Further to yield high accuracy by knowing the channel condition information is a tough task in the MIMO OFDM system, so accurate information is retrieved using channel estimation procedures. In this paper, the basic content concerning to MIMO OFDM system is described. And also an extensive performance analysis on various diversity schemes with channel equalization and estimation techniques are described. This can be adopted in the MIMO OFDM system by measuring in terms of Signal to Noise Ratio (SNR) and Bit Error Rate (BER) parameters are discussed with simulation plots.