Robust MIMO-OFDM System for Frequency-Selective Mobile Wireless Channels
This paper presents a novel technique to enhance the robustness of space–frequency block coded (SFBC) orthogonal frequency-division multiplexing (OFDM) systems. The proposed system shapes the channel matrix of a frequency-selective fading channel into a piecewise flat fading over each block of two adjacent subcarriers. Analytical and simulation results show that the proposed scheme substantially outperforms the conventional SFBC in frequency-selective fading channels, which assumes that the channel parameters are equal over the duration of the codeword. Moreover, the authors demonstrate that the proposed system offers a superior performance in fast time-varying channels where the interference that results from the channel variations acts only as an additive noise. In addition to its superior performance, the proposed system has low computational complexity, because it is based on the short-block-length Walsh–Hadamard transform.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00189545
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Supplemental Notes:
- Abstract reprinted with permission of IEEE.
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Authors:
- Al-Dweik, A
- Kalbat, F
- Muhaidat, S
- Filio, O
- Ali, S M
- Publication Date: 2015-5
Language
- English
Media Info
- Media Type: Web
- Pagination: pp 1739-1749
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Serial:
- IEEE Transactions on Vehicular Technology
- Volume: 64
- Issue Number: 5
- Publisher: Institute of Electrical and Electronics Engineers (IEEE)
- ISSN: 0018-9545
- Serial URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=25
Subject/Index Terms
- TRT Terms: Data communications; Mobile computing; Multiplexing; Radio frequency; Simulation; Wireless communication systems
- Subject Areas: Data and Information Technology; Highways; Planning and Forecasting; I72: Traffic and Transport Planning;
Filing Info
- Accession Number: 01567882
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 26 2015 1:45PM