BER Performance Optimization of the SFBC-OFDM System for Economical Receiver Design with Imperfect Channel Estimation

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Md. Jakaria Rahimi 1,* Md. Shaikh Abrar Kabir 1 Azhar Niaz 1 Md. Jahidul Islam 1 Oli Lowna Baroi 1

1. Department of Electrical and Electronic Engineering, Ahsanullah University of Science & Technology, Dhaka-1208, Bangladesh

* Corresponding author.


Received: 1 Oct. 2019 / Revised: 16 Oct. 2019 / Accepted: 25 Oct. 2019 / Published: 8 Nov. 2019

Index Terms

Space-frequency block coding (SFBC), Orthogonal frequency division multiplexing (OFDM), Rayleigh fading, Bit error rate (BER), Channel state information (CSI).


In this paper, the bit error rate (BER) performance of SFBC-OFDM systems for frequency selective fading channels is observed for various antenna orientations and modulation schemes. The objective is to find out a suitable configuration with minimum number of receiving antenna that requires minimum signal power level at the receiver to provide reliable voice and video communication. We have considered both M-ary phase shift keying (MPSK) and M-ary quadrature amplitude modulation (MQAM) in the performance analysis considering both perfect and imperfect channel state information (CSI). The authors have expressed the BER under imperfect channel estimation condition as a function of BER under perfect channel condition in this paper. The finding shows, for a BTS with 4 transmitting antenna and MS with 2 receiving antenna BPSK performs better for both perfect and imperfect CSI. Maximum permissible channel estimation error increases with the usage of more receiving antenna at the expense of increased cost.

Cite This Paper

Md. Jakaria Rahimi,Md. Shaikh Abrar Kabir, Azhar Niaz, Md. Jahidul Islam,Oli Lowna Baroi, " BER Performance Optimization of the SFBC-OFDM System for Economical Receiver Design with Imperfect Channel Estimation", International Journal of Wireless and Microwave Technologies(IJWMT), Vol.9, No.6, pp. 19-30, 2019. DOI: 10.5815/ijwmt.2019.06.03


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