• P.BHANUSRI
• I.SANTHI PRABHA

In OFDM,the transmission bandwidth is divided into many small subcarriers .Cyclic prefix is added to subcarriers to avoid inter carrier interference.However cyclic prefix length should be choosen to exceed the channel delay spread.therefore ,OFDM can eliminate the ICI and can overcome multipath fading.In transmitting data information ,another issue exists due to reduction of the error rate.so we use error correcting codes in the design of the OFDM transmission systems.Time domain synchronous orthogonal frequency division mutliplexing naturally suits for the proposed inter carrier interference mitigation algorithm because its receiver is able to easily estimate linear time varying.The proposed algorithm applies to all OFDM systems as long as linear time-varying channel estimation is applicable.In this paper, turbo codes are used to attain high date rate transmission in the OFDM system.These codes introduce error correction in the system at each stage which helps us to get the data output with reduced errors.when the multi input multiple output OFDM is overloaded then calculation of bits combindly is performed efficiently than calculating separately for single stream .

MIMO –OFDM,Turbo encoder,Turbo decoder,Bit error rate,Mean square error

"Development Of Turbo Coded MIMO-OFDM System In Time Varying Channels", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.562-568, July-2018, Available :http://www.jetir.org/papers/JETIR1807088.pdf

"Development Of Turbo Coded MIMO-OFDM System In Time Varying Channels", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp562-568, July-2018, Available at : http://www.jetir.org/papers/JETIR1807088.pdf