Designing of efficient LDPC based MIMO-OFDM using 4-PSK scheme

Current modern wireless communication is based on orthogonal frequency division multiplexing (OFDM) and the reliability of it significantly increased with the multiple inputs multiple outputs (MIMO), and there is a scope to enhance the performance of the system further. Working on the same goal this paper proposed a methodology to enhance end to end performance of the system. The projected methodology utilizes the MIMO-OFDM architecture with 4-PSK modulation and BPSK modulation. The BER is calculated for both the schemes and the performance of the system is evaluated with the different values of the FFT sizes and found that BER is achieved better with 1024 FFT points and BPSK modulation.