MIMO-OFDM Using Error Correcting Codes

Abstract

In the recent years ,the demand for multimedia communication is growing rapidly. Orthogonal frequency division Multiplexing(OFDM) is used in 4G wireless communication systems because of its more coverage area, high data rate . If a multiple input multiple output (MIMO) Technique is incorporated in OFDM ,it gives high speed and reliable transmission in wireless communication. MIMO is the suitable technique for high speed data multi carrier transmission ,it gives significant improvement in capacity and is used in the long term evaluation standard. If Forward error correction (FEC)codes are incorporated in MIMO-OFDM system, further improvement in performance can be achieved. In this paper an extensive literature survey is carried out for FEC coded MIMO-OFDM systems.

The FEC codes  like convolutional codes , Low density parity check(LDPC)codes ,Turbo codes, Polar codes and their Concatenations are applied to MIMO-OFDM system and bit error rate (BER) performances are analyzed .The performance of different FEC-coded MIMO-OFDM systems Is analyzed with different channels (Additive white Gaussian noise(AWGN), Rayleigh, Rician ) under different Modulation schemes (PSK16,QAM32).The performace of FEC coded MIMO-OFDM systems is compared with different antenna configurations(2×2,4×4).  After comparing the BERperformaces with the above parameters ,the  best performance FEC coded MIMO-OFDM systems are determined .