BER comparison of different modulation schemes over AWGN and Rayleigh fading channels for MIMO-OFDM system
by Simeon Olumide Ajose; Rasheed Alade Bakare; Agbotiname Lucky Imoize
International Journal of Communication Networks and Distributed Systems (IJCNDS), Vol. 18, No. 2, 2017

Abstract: In this paper, the performance of MIMO-OFDM technology is presented. The system was modelled using Simulink. Distinct modulation schemes: M-ary phase shift keying (M-PSK) and M-ary quadrature amplitude modulation (M-QAM), were employed and two different transmission channels were considered; additive white Gaussian noise (AWGN) and Rayleigh multipath fading channels. First, an OFDM-only system was modelled after which a MIMO-OFDM system was simulated. The simulation of these systems was done over the two different channels. The results obtained showed that the performance of the OFDM system is better over AWGN channel than Rayleigh fading channel for all the modulation schemes. However, with the addition of OSTBC-based MIMO technology to the OFDM system, all the modulation schemes showed better performance over the Rayleigh fading channel (even better than OFDM system over AWGN channel). MIMO systems with transmit diversity and no diversity was considered. Findings generally revealed that the higher the number of the input and output antennas, the better the performance of the communication system.

Online publication date: Tue, 07-Feb-2017

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Communication Networks and Distributed Systems (IJCNDS):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com