Reducing MIMO detection complexity via hierarchical modulation /

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2014

Author

Uğur, Yiğit

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This work considers multiple-inputmultiple-output (MIMO) communication systems using hierarchical modulation. A disadvantage of the maximum-likelihood (ML) MIMO detector is that its computational complexity increases exponentially with the number of transmit antennas. To reduce complexity, we propose a hierarchical modulation scheme to be used in MIMO transmission where base and enhancement layers are incorporated. In the proposed receiver, the base layer is detected first with a minimum mean square error (MMSE) detector which is followed by ML detection of the enhancement layer. Our results indicate that performance close to ML detection can be achieved with the proposed scheme, yet at a significantly lower complexity.

Subject Keywords

MIMO systems., Modulation (Electronics)., Modulation theory.

URI

http://etd.lib.metu.edu.tr/upload/12617623/index.pdf
https://hdl.handle.net/11511/23770

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

Y. Uğur, “Reducing MIMO detection complexity via hierarchical modulation /,” M.S. - Master of Science, Middle East Technical University, 2014.