• Sudha Paliwal
• Dr. Hemant Dhabhai
• Aabhas Mathur

This paper shows the performance analysis of 2×2 MIMO-OFDM using QPSK modulation scheme for different sub-carriers and pilots under Rayleigh Fading Channel with AWGN. MIMO-OFDM is a combination of MIMO and OFDM technology. In this technology Orthogonal Frequency Division Multiplexing (OFDM) is used to improve spectral efficiency and Multiple Input Multiple Output (MIMO) is used to improve spatial diversity. This is a comparative analysis of obtained SNR for approximating ideal BER on different sub-carriers and pilots. The result shows that BER improved dramatically in low SNR as increment in number of sub-carriers and pilots.

MIMO, OFDM, IFFT, FFT, BER, SNR, AWGN, Rayleigh Fading

"BER Analysis of 2×2 MIMO- OFDM using QPSK Modulation Schemes for different Number of Subcarriers and Pilots under Rayleigh Fading Channel with AWGN", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.506-511, May-2019, Available :http://www.jetir.org/papers/JETIR1905O79.pdf

"BER Analysis of 2×2 MIMO- OFDM using QPSK Modulation Schemes for different Number of Subcarriers and Pilots under Rayleigh Fading Channel with AWGN", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp506-511, May-2019, Available at : http://www.jetir.org/papers/JETIR1905O79.pdf