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Modeling of MIMO-OFDM Channel with STBC and Directivity to Combat Fading and Co-Channel Interference

DOI: 10.4236/oalib.1106809, PP. 1-15

Subject Areas: Simulation/Analytical Evaluation of Communication Systems

Keywords: MIMO, STBC, Beamforming, Cellular, Interferers, Co-Channels

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A wireless communication system for cellular technology is currently considered a very important topic for mobile phone. The design of such systems needs to include their multipath and fading main problems. In this paper, a MIMO-OFDM channel is designed and modeled to combat such problems, as well as STBS and directivity are also involved in this design to increase system reliability and enhance BER performance. The modeling and simulation process of the designed systems are carried out using Matlab software (ver. R2019a). Without directivity, simulation process shows that including STBC results on average a gain of ≈ 1.5 dB for different spatial stream. With respect to the no directivity (2 × 1 case), when directivity of 4 × 1 and 8 × 1 spatial streams are introduced (at fixed 15 dB S/N), the BER improvement values are 85% and 95% for 5 Km (cluster size k = 4) and 9.5 Km (cluster size k = 7) co-channels interferers position for BS respectively.

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Farej, Z. K. and Al-Najafi, A. T. (2020). Modeling of MIMO-OFDM Channel with STBC and Directivity to Combat Fading and Co-Channel Interference . Open Access Library Journal, 7, e6809. doi:


[1]  Kumbhani, B. and Kshetrimayum, R.S. (2017) MIMO Wireless Communications over Generalized Fading Channels. CRC Press, Boca Raton.
[2]  Hampton, J.R. (2019) Introduction to MIMO Communications. Cambridge University Press, New York.
[3]  Sim, Z.A., Reine, R., Zang, Z.Q. and Gopal, L. (2017) PAPR and BER Reduction in MU-MIMO-OFDM Systems via a Set of Waveforms. MIMO Proc. of the 2017 IEEE International Conference on Signal and Image Processing Applications, Malaysia, 12-14 September 2017, 55-60.
[4]  Tang, W.W. and Kang, S.L. (2020) Design of MIMO-PDMA in 5G Mobile Communication System. IET Communications, 14, 76-83.
[5]  Farej, Z.K. and Jasim, M.M. (2018) Investigation on the Performance of the IEE802.11n Based Wireless Networks for Multimedia Services. 2nd International Conference for Engineering, Technology and Sciences of Al-Kitab, Karkuk, 4-6 December 2018, 48-53.
[6]  Jeiad, H.A. and Al-Bahadili, R.J.S. (2019) Multipath Fading Effects on Uncoded and Coded Multiple Frequency Shift Keying Performance in Mobile Wireless Communications. Journal of Engineering and Sustainable Development, 23, 18-33.
[7]  Thaher, R.H. and Radhy, H.Y. (2015) MIMO Channel Capacity Improvement Using Space Time Coding. Journal of Engineering and Development, 19, 1-15.
[8]  Bharti, P.K. and Rawat, P. (2018) Alamouti-STBC Based Performance Estimation of Multi Tx and Rx Antenna over MIMO-OFDM. Proceedings of the 2nd International Conference on Trends in Electronics and Informatics (ICOEI 2018), Tirunelveli, 11-12 May 2018, 1277-1281.
[9]  Ravibabu, T. and Dharma Raj, C. (2018) BER Analysis of Spatial Multiplexing and STBC MIMO-OFDM System. 4th International Conference on Devices, Circuits and Systems (ICDCS), Coimbatore, 6-17 March 2018, 110-116.
[10]  Doanh, B.Q., Quan, D.T., et al. (2019) An Efficient Design of Precoding and Equalization to Reduce BER of Multi-Path MIMO Channels. 3rd International Conference on Recent Advances in Signal Processing, Telecommunications & Computing, Hanoi, 21-22 March 2019, 15-19.
[11]  Abdul-Latef, W.M. and Mawjoud, S.A. (2008) Performance Improvement of Cellular Systems Using MIMO-OFDM. AL-Rafidain Engineering Journal (AREJ), 16, 69-79.
[12]  Sindhu, P. and Hameed, A. (2015) Efficient Quasi-Orthogonal Space-Time Block Codes for Five and Six Transmit Antennas. IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT), Bangalore, 10-11 July 2015, 1-5.
[13]  Kadhim, M.A. (2014) Design and Implementation of Adaptive Antenna System in a New LTE 3GPP Transceivers Based Multiwavelet Signals. Iraqi Journal of Applied Physics, 10, 11-16.
[14]  Zhang, Y., Yue, D.-W. and Jia, Y.N. (2015) Further Results on the Beamforming Transmission Scheme Only Using the Specular Component for Massive-MIMO Systems. Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC), Qinhuangdao, 18-20 September 2015, 997-1001.
[15]  Myers, N.J. and Kannu, A.P. (2016) Impact of Channel Estimation Errors on Single Stream MIMO Beamforming. IEEE Communications Letters, 21, 1345-1348.
[16]  Duman, T.M. and Ghrayeb, A. (2007) Coding for MIMO Communication Sytems. Wiley, Hoboken.


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