• Nivedita Singh
• M.Shukla

Today in wireless communication high speed data and good capacity to support a huge number of simultaneous users with more reliability is in high demand. The new horizons on these discussed topics have emerged as “hot cake” for researchers all over the world. . Many techniques, estimation methods, diversity schemes have been introduced to nullify the associated problem with speed and reliability in sending data. Generally the Discrete Fourier Transform (DFT) Tool and after that Fast Fourier Transform (FFT) has been adopted by the researcher’s along with the MIMO-OFDM system for easier handling and computation of the system. However, the higher probability of occurring error has raises the concern in wireless communication. So, in this paper combined MIMO-OFDM system with different OFDM symbol duration has been considered with proposed Discrete Wavelet Transform Tool (DWT) in OFDM system for improved BER performance.

Bit Error Rate (BER), Cyclic Prefix (CP), Inter Symbol Interference (ISI), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM).

"Least Square Channel Estimation of Wavelet Based MIMO-OFDM System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.15-20, June 2019, Available :http://www.jetir.org/papers/JETIR1906V03.pdf

"Least Square Channel Estimation of Wavelet Based MIMO-OFDM System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp15-20, June 2019, Available at : http://www.jetir.org/papers/JETIR1906V03.pdf