ICI reduction through shaped OFDM in coded MIMO-OFDM systems

Xiang, Wei and Russell, Julian and Wang, Yafeng (2010) ICI reduction through shaped OFDM in coded MIMO-OFDM systems. International Journal on Advances in Telecommunications, 3 (3&4). pp. 311-323. ISSN 1942-2601

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Abstract

[Abstract]: The default pulse shaping filter in the conventional multiple-input and multiple-output (MIMO) based orthogonal frequency division multiplexing (OFDM) system is a rectangular function, which unfortunately is highly sensitive to frequency synchronization errors and the Doppler spread. Shaped OFDM is able to considerably alleviate the effect of inter-carrier interference (ICI) as well as reduce the out-of-band frequency leak. In this paper, we study various pulse shaping functions and investigate their efficacy for reducing the ICI in the space-time block coded MIMO-OFDM system. We compare a new shaping pulse termed harris-Moerder pulse with several other popular Nyquist pulses such as the raised-cosine pulse and better than raised-cosine pulse. Our simulation results confirm that pulse shaping using a suitable shaping function other than the default rectangular one can alleviate ICI and thus achieve better bit error rate (BER) performance. Furthermore, it is demonstrated that the harris-Moerder shaping pulse is the most successful one in suppressing ICI.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: The copyright for each included paper belongs to the authors.
Depositing User: Dr Wei Xiang
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering
Date Deposited: 10 May 2011 00:34
Last Modified: 03 Jul 2013 00:36
Uncontrolled Keywords: Pulse shaping, inter-carrier interference (ICI) reduction, orthogonal frequency-division multiplexing (OFDM), multiple-input and multiple-output (MIMO), space-time coding, Rayleigh fading channel.
Fields of Research (FOR2008): 10 Technology > 1005 Communications Technologies > 100510 Wireless Communications
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/18841

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