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Abdullah, Md. Ibrahim
- Analysis the Performance of MIMO-OFDM for Various Modulation Techniques over AWGN, Rayleigh Fading and Rician Fading Channel
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Authors
Diponkor Bala
1,
G. M. Waliullah
1,
Md. Hafizur Rahman
1,
Md. Ibrahim Abdullah
1,
Mohammad Alamgir Hossain
2
Affiliations
1 Department of Computer Science and Engineering, Islamic University, Kushtia, BD
2 Department of Computer Science and Engineering, Islamic University, Kushtia,, BD
1 Department of Computer Science and Engineering, Islamic University, Kushtia, BD
2 Department of Computer Science and Engineering, Islamic University, Kushtia,, BD
Source
Journal of Network and Information Security, Vol 9, No 2 (2021), Pagination: 1-8Abstract
Nowadays, we are living in the era of modern communication technology. The number of the mobile users is increasing tremendously day by day all over the world. Due to the increasing of the mobile users, the wireless communication systems are highly required a communication system that provides data transmissions rates and more reliability to the users. Multiple Input and Multiple Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) is being considered to get those facilities. MIMO-OFDM has the ability to serve a large number of users with an enormous data transmission speed communication as well as utilizing the bandwidth efficiently. The multicarrier modulation technique is cap-able of reducing the inter symbol interference and multipath fading problems. In this paper, we mainly focused on analysis the performance of MIMO-OFDM systems and the performance of MIMO-OFDM has been measured in terms of the Bit Error Rate and Signal to Noise Ratio based on different channels such as- AWGN, Rayleigh fading, Rician fading and different modulation techniques such as- BPSK, QPSK, M-PSK, D-BPSK, D-QPSK, DPSK and QAM. All the simulations are performed by MATLAB framework.Keywords
BPSK, D-BPSK, DPSK, DQPSK, M-PSK, MIMO- OFDM, OFDM, QAM, QPSK.
References
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- Analysis the Performance of OFDM-MIMO Channel with Different Equalizers
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Authors
Affiliations
1 Department of Computer Science and Engineering, Islamic University, Kushtia, BD
2 Department of Computer Science and Engineering, Islamic University, Kushtia, IN
1 Department of Computer Science and Engineering, Islamic University, Kushtia, BD
2 Department of Computer Science and Engineering, Islamic University, Kushtia, IN
Source
Journal of Network and Information Security, Vol 10, No 1 (2021), Pagination: 1-5Abstract
The excellent efficiency, capacity, and dependability of todays wireless networks are concurrent to be achieved, and employing several communication methods antennas is an effective solution that has been extensively used. A communication system where both terminals are equipped with multi-antennas are referred to as MIMO systems, and when combined with OFDM technology are referred to as MIMO-OFDM. MIMO-OFDM has the ability to serve a large number of users with an enormous data transmission speed communication as well as utilizing the bandwidth efficiently. The aim of this simulation task explores three different equalization schemes in the MIMO flat fading channel, frequency-selective OFDM channel, and combined OFDM-MIMO wireless links on the bit error rate (BER) metric. Throughout the simulations, we modulate in 4-QAM (MIMO, OFDM-MIMO) and 16-QAM (OFDM) and observe BER performances for signal-to-noise ratio (SNR) up to 30. We find that given the specifications for OFDM as defined in IEEE 802.11a, precoding, and zero-forcing schemes in MIMO yield similar BER performances, while the MMSE scheme performs slightly worse at higher SNRs. Based on the equalization scheme, we assume perfect channel state information at the transmitter (CSIT) (for precoding) and the receiver (CSIR) (for zero-forcing and MMSE).Keywords
CSIR, CSIT, Equalization, MIMO, OFDM, OFDM-MIMO.References
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