Study of the Performance of 3×3 Mimo Transmission System using Mmse and Ml Detectors
Pramodini DV1, AG Ananth2, HM Mahesh3
Pramodini. D. V, Assistant professor in Dept of Information Science and Engineering, PESSE, Bangalore, Karnataka, India.
2Dr. A. G. Ananth, Professor in Telecommunication Department of R.V College of Engineering, Bangalore, India.
3Dr. H. M. Mahesh, Associate Professor and Chairman in the department of Electronics Science, Bangalore University, Jnanabharathi, Bangalore, India.
Manuscript received on October 06, 2011. | Revised Manuscript received on October 12, 2011. | Manuscript published on October 30, 2011 . | PP: 63-66 | Volume-1 Issue-1, October 2011. | Retrieval Number: A0114101111/2011©BEIESP
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Abstract: Analysis of full-rate linear and space-time block code for 3X3 multiple-input multiple-output (MIMO) communication systems under a Rayleigh flat-fading environment has been carried out. The design targets specifically use a Linear Minimum Mean-square Error (MMSE) and Maximum Likelihood (ML) receivers which minimizes the average Symbol error rate (SER) for a QPSK transmitted signal. The optimization problem is solved by minimizing a lower bound of the SER. The performance of MIMO systems has been studied by changing the number of transmitters and receivers. A comparison has been made between MMSE and ML receivers in terms SER as a function of SNR. The simulation results show that the higher MIMO system exhibits a SNR~4 dB improvement for ML receiver in comparison to linear MMSE receiver.