Improvement of Ber for Mimo-Ofdm System Using Wavelet Transform
A.Vani1, Pranali Shanker Bargade2 

1A. Vani, Assistant Professor, awarded Ph. D degree in MANETS from JNTU Anantapur, A.P, India.
2Pranali Shanker Bargade, MANETS from JNTU Anantapur, A.P, India.
Manuscript received on 02 June 2019 | Revised Manuscript received on 10 June 2019 | Manuscript published on 30 June 2019 | PP: 204-207 | Volume-8 Issue-8, June 2019 | Retrieval Number: E6281038519/19©BEIESP
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Abstract: OFDM is a multicarrier modulation technique and this technique is used with MIMO. In MIMO, multiple antennas are used at transmitter and at receiver. For achieving high spectral efficiency, OFDM uses MIMO. Because of failure of orthogonally between the sub carriers, OFDM has inter carrier interference (ICI) and inter symbol interference (ISI.) In OFDM, cyclic prefixing (CP) is used to overcome the problem. In this, BER is calculated using DWT based OFDM with QAM modulation technique over AWGN.BER is calculated for different wavelets using different levels of QAM.The performance metrics are analyzed through MATLAB simulations
Keyword: BER SNR, QAM,, MIMO, DWT ,Wavelet.
Scope of the Article: Program Understanding and System Maintenance