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Computationally Efficient Lattice Reduction Aided Detection for MIMO-OFDM Systems under Correlated Fading Channels Public Deposited

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  • We analyze the relationship between channel coherence bandwidth and two complexity-reduced lattice reduction aided detection (LRAD) algorithms for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems in correlated fading channels. In both the adaptive LR algorithm and the fixed interval LR algorithm, we exploit the inherent feature of unimodular transformation matrix P that remains the same for the adjacent highly correlated subcarriers. Complexity simulations demonstrate that the adaptive LR algorithm could eliminate up to approximately 90 percent of the multiplications and 95 percent of the divisions of the brute-force LR algorithm with large coherence bandwidth. The results also show that the adaptive algorithm with both optimum and globally suboptimum initial interval settings could significantly reduce the LR complexity, compared with the brute-force LR and fixed interval LR algorithms, while maintaining the system performance.
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  • Wei Liu, Kwonhue Choi, and Huaping Liu, "Computationally Efficient Lattice Reduction Aided Detection for MIMO-OFDM Systems under Correlated Fading Channels," ETRI Journal, vol. 34, no. 4, Aug. 2012, pp. 503-510. http://dx.doi.org/10.4218/etrij.12.0111.0707
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  • This research was supported by the Ministry of Knowledge Economy, Korea, under the Information Technology Research Center support program supervised by the National IT Industry Promotion Agency (NIPA-2012-C1090-1231-0009) and Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2009-0088286).
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  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2013-04-10T17:58:06Z (GMT) No. of bitstreams: 3 license_rdf: 19965 bytes, checksum: 225316337756db2af069c3edfe03a49f (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) LiuHuapingElectricalEngineeringComputerScienceComputationallyEfficientLattice.pdf: 2319282 bytes, checksum: 555e9249b4eae7b2c879556005957d0d (MD5)
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2013-04-10T17:55:45Z No. of bitstreams: 3 license_rdf: 19965 bytes, checksum: 225316337756db2af069c3edfe03a49f (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) LiuHuapingElectricalEngineeringComputerScienceComputationallyEfficientLattice.pdf: 2319282 bytes, checksum: 555e9249b4eae7b2c879556005957d0d (MD5)
  • description.provenance : Made available in DSpace on 2013-04-10T17:58:06Z (GMT). No. of bitstreams: 3 license_rdf: 19965 bytes, checksum: 225316337756db2af069c3edfe03a49f (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) LiuHuapingElectricalEngineeringComputerScienceComputationallyEfficientLattice.pdf: 2319282 bytes, checksum: 555e9249b4eae7b2c879556005957d0d (MD5) Previous issue date: 2012-08

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