Hybrid MMSE Precoding and Combining Designs for mmWave Multiuser Systems. Nguyen, D., Le, L., Le-Ngoc, T., & Heath, R. IEEE Access, 2017.
abstract   bibtex   
© 2013 IEEE. Hybrid analog/digital precoding architectures are a low-complexity alternative for fully digital precoding in millimeter-wave (mmWave) MIMO wireless systems. This is motivated by the reduction in the number of radio frequency and mixed signal hardware components. Hybrid precoding involves a combination of analog and digital processing that enables both beamforming and spatial multiplexing gains in mmWave systems. This paper develops hybrid analog/digital precoding and combining designs for mmWave multiuser systems, based on the mean-squared error (MSE) criteria. In the first design with the analog combiners being determined at the users, the proposed hybrid minimum MSE (MMSE) precoder is realized by minimizing the sum-MSE of the data streams intended for the users. In the second design, both the hybrid precoder and combiners are jointly designed in an iterative manner to minimize a weighted sum-MSE cost function. By leveraging the sparse structure of mmWave channels, the MMSE precodi ng/combining design problems are then formulated as sparse reconstruction problems. An orthogonal matching pursuit-based algorithm is then developed to determine the MMSE precoder and combiners. Simulation results show the performance advantages of the proposed precoding/combining designs in various system settings.
@article{
 title = {Hybrid MMSE Precoding and Combining Designs for mmWave Multiuser Systems},
 type = {article},
 year = {2017},
 identifiers = {[object Object]},
 keywords = {Millimeter wave,antenna arrays,beamforming,minimum mean squared-error (MMSE),multiple-input multiple-output (MIMO),precoding,sparse reconstruction},
 volume = {5},
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 created = {2017-12-16T11:30:18.489Z},
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 abstract = {© 2013 IEEE. Hybrid analog/digital precoding architectures are a low-complexity alternative for fully digital precoding in millimeter-wave (mmWave) MIMO wireless systems. This is motivated by the reduction in the number of radio frequency and mixed signal hardware components. Hybrid precoding involves a combination of analog and digital processing that enables both beamforming and spatial multiplexing gains in mmWave systems. This paper develops hybrid analog/digital precoding and combining designs for mmWave multiuser systems, based on the mean-squared error (MSE) criteria. In the first design with the analog combiners being determined at the users, the proposed hybrid minimum MSE (MMSE) precoder is realized by minimizing the sum-MSE of the data streams intended for the users. In the second design, both the hybrid precoder and combiners are jointly designed in an iterative manner to minimize a weighted sum-MSE cost function. By leveraging the sparse structure of mmWave channels, the MMSE precodi ng/combining design problems are then formulated as sparse reconstruction problems. An orthogonal matching pursuit-based algorithm is then developed to determine the MMSE precoder and combiners. Simulation results show the performance advantages of the proposed precoding/combining designs in various system settings.},
 bibtype = {article},
 author = {Nguyen, D.H.N. and Le, L.B. and Le-Ngoc, T. and Heath, R.W.},
 journal = {IEEE Access}
}
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