International Journal of Computer Network and Information Security(IJCNIS)

ISSN: 2074-9090 (Print), ISSN: 2074-9104 (Online)

Published By: MECS Press

IJCNIS Vol.6, No.3, Feb. 2014

BER Analysis of Various Channel Equalization Schemes of a QO-STBC Encoded OFDM based MIMO CDMA System

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Husnul Ajra,Md. Zahid Hasan,Md. Shohidul Islam

Index Terms

Code Division Multiple Access (CDMA);Multiple Input multiple Output (MIMO);Minimum Mean Square Error (MMSE);Orthogonal Frequency Division Multiplexing (OFDM);Quasi Orthogonal Space Time Block Code (QO-STBC);Singular Value decomposition (SVD);Zero Forcing(ZF)


Quasi Orthogonal Space Time Block Code (QO-STBC) can provide full-rate transmission and low decoding complexity. This paper deals with channel estimation for Quasi Orthogonal Space Time Block Code (QO-STBC) encoded Orthogonal Frequency Division Multiplexing (OFDM) based Multiple Input multiple Output (MIMO) Code Division Multiple Access (CDMA) system. Using the QO-STBC coding property, we analysis the weight performance that reduce the computational complexity of system. The design of channel estimation method is proposed by considering Minimum Mean Square Error (MMSE), Zero Forcing (ZF), and Singular Value Decomposition (SVD) that involves four transmit antennas and four receive antennas. Such filter facilitates the use of standard equalizer or decoder that has been designed to mitigate the Inter Symbol Interference (ISI) effect. In this paper analytical results show that the BER analysis of Minimum Mean Square Error (MMSE) algorithm using various modulation techniques outperforms as compared to other channel equalization techniques.

Cite This Paper

Husnul Ajra, Md. Zahid Hasan, Md. Shohidul Islam,"BER Analysis of Various Channel Equalization Schemes of a QO-STBC Encoded OFDM based MIMO CDMA System", IJCNIS, vol.6, no.3, pp.30-36, 2014. DOI: 10.5815/ijcnis.2014.03.04


[1]Husnul Ajra, "Performance Evaluation of a QO-STBC Encoded OFDM Based MIMO CDMA Wireless Communication system With Various Channel Equalization Schemes", Rajshahi University , M.Sc Thesis - 2010.

[2]Theodore S. Rappaport,Wireless Communication principles and practice, 2nd Edition, Prentice Hall India.

[3]CDMA T&C Lesson 1, "".

[4]Qi Qu, Laurence B. Milstein, and Dhadesugoor R. Vaman, "Cognitive Radio Based Multi-User Resource Allocation in Mobile Ad Hoc Networks Using Multi-Carrier CDMA Modulation", IEEE journal on communications, vol. 26, No. 1, January, 2008.

[5]Wan Choi, Jeffrey G. Andrews, "Spatial multiplexing in cellular MIMO-CDMA systems with linear receivers: Outage probability and capacity," to appear (2004) Cached, Venue: IEEE Trans. Wireless Comm, Citations: 7 - 4 self.

[6]G. J. Foschini and M. J. Gans, "On limits of wireless communications in a fading environment when using multiple antennas," Wireless Personal Commun., vol. 6, pp. 311-335, March 1998.

[7]H. Bolcskei, D. Gesbert, and A. Paulraj, "On the capacity of wireless systems employing ofdm-based spatial multiplexing," IEEE Trans. Commun., vol. 50, no. 2, pp. 225-234, Feb. 2002.

[8]S. M. Alamouti, "A simple transmit diversity technique for wireless communications," IEEE Jour. Select. Areas in Commun., vol. 16, no. 8, pp. 1451-1458, Oct. 1998.

[9]V. Tarokh, N. Seshadri, and A. R. Calderbank, "Space-time codes for high data rate wireless communication: Performance criterion and code construction," IEEE Trans. Info. Theory, vol 44, no. 2, pp. 744-765, Mar. 1998.

[10]Gordon L. Stuber, John R. Barry, Steve W. Mclaughlin, I. Mary Ann, AND Thomas G. Pratt, "Broadband MIMO-OFDM Wireless Communications", proceeding of the IEEE , Vol. 92, No. 2, February 2004.

[11]L. Zheng and D. Tse, "Diversity and multiplexing: A fundamental tradeoff in multiple antenna channels," IEEE Trans. Info. Theory, vol. 49, no. 5, pp. 1073-1096, May 2003.

[12]Jafarkhani H. "A quasi-orthogonal space-time block code" IEEE transaction on communications, vol-49, pp. 332-335, 2001.

[13]Wang Z., Giannakis GB, "Wirelees multi carrier communications: Where Fourier meets Shannon", IEEE signal processing magazine, vol-17, No-3, pp. 29-48, 2000.

[14]Ari H, olav T, Risto W., "Multi-antenna Transceiver techniques for 3G and beyond", Wiley: Newyork, NY, 2003.

[15]H. Zahid, H. Reaz, "Performance evaluation of a concatenated FEC scheme based Wimax system with applicaion to the digital image transmission over white guassian noise and fading channels", Asian journal of information technology, vol 9(2), pp. 62-66, 2010.

[16]H. Zahid,A. Nur-E-Zaman and R. Hasibur, "Precise BER Analysis of 1/2 and 2/3 rated RS-CC Concatenated Coded for Digital Image Transmission in OFDM System", International journal of computer science issues, vol. 9, Issue 5, pp. 119-125, September 2012.