Performance Analysis of 2x2 and 3x3 MIMO with QPSK in Rayleigh Fading Channel

Performance Analysis of 2x2 and 3x3 MIMO with QPSK in Rayleigh Fading Channel. Lima, J. S., Risala T Khan, & Fahima Tabassum International Journal for Research in Applied Science and Engineering Technology, 9(2):438–444, February, 2021.

Paper doi abstract bibtex

A promising approach to improve the performance of wireless communication is multiple input multiple output (MIMO) system. MIMO can achieve high data rate without extra bandwidth. Space-Time Block Coding (STBC) is an emerging concept in MIMO which provides efficient performance in case of Bit Error Rate (BER) and diversity gain. In this paper, mathematical equations of channel capacity and Bit Error Rate (BER) for 3x3 MIMO system has been derived and simulation has been done to compare the performance of Average Channel Capacity vs. SNR and BER vs. SNR for 2X2 and 3X3 antennas. By varying the SNR value we observe the channel capacity and BER of the proposed system. In case of probability of error it is decreased when SNR value is increased but not tends to zero. But in case of channel capacity, it is increased with the increased value of SNR. By comparing these two relations we see that channel capacity is increasing without extra band-width and offers faster communication. Then a comparison among the existing MIMO system with the proposed system has been done. The result shows 3x3 MIMO system gives better performance for channel capacity compared to 2X2 MIMO.

@article{lima_performance_2021,
	title = {Performance {Analysis} of 2x2 and 3x3 {MIMO} with {QPSK} in {Rayleigh} {Fading} {Channel}},
	volume = {9},
	issn = {23219653},
	url = {https://www.ijraset.com/fileserve.php?FID=33119},
	doi = {10.22214/ijraset.2021.33119},
	abstract = {A promising approach to improve the performance of wireless communication is multiple input multiple output (MIMO) system. MIMO can achieve high data rate without extra bandwidth. Space-Time Block Coding (STBC) is an emerging concept in MIMO which provides efficient performance in case of Bit Error Rate (BER) and diversity gain. In this paper, mathematical equations of channel capacity and Bit Error Rate (BER) for 3x3 MIMO system has been derived and simulation has been done to compare the performance of Average Channel Capacity vs. SNR and BER vs. SNR for 2X2 and 3X3 antennas. By varying the SNR value we observe the channel capacity and BER of the proposed system. In case of probability of error it is decreased when SNR value is increased but not tends to zero. But in case of channel capacity, it is increased with the increased value of SNR. By comparing these two relations we see that channel capacity is increasing without extra band-width and offers faster communication. Then a comparison among the existing MIMO system with the proposed system has been done. The result shows 3x3 MIMO system gives better performance for channel capacity compared to 2X2 MIMO.},
	language = {en},
	number = {2},
	urldate = {2021-05-17},
	journal = {International Journal for Research in Applied Science and Engineering Technology},
	author = {Lima, Jakia Sultana and {Risala T Khan} and {Fahima Tabassum}},
	month = feb,
	year = {2021},
	pages = {438--444},
}

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