Hybrid LISA for Wideband Multiuser Millimeter-Wave Communication Systems Under Beam Squint
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Hybrid LISA for Wideband Multiuser Millimeter-Wave Communication Systems Under Beam SquintFecha
2019-02Cita bibliográfica
J. P. Gonzalez-Coma, W. Utschick, y L. Castedo, «Hybrid LISA for Wideband Multiuser Millimeter-Wave Communication Systems Under Beam Squint», IEEE Trans. Wireless Commun., vol. 18, n.o 2, pp. 1277-1288, feb. 2019, doi: 10.1109/TWC.2018.2890667
Resumen
[Abstract]: This paper jointly addresses user scheduling and precoder/combiner design in the downlink of a wideband millimeter-wave communications system. We consider the orthogonal frequency-division multiplexing modulation to overcome the channel frequency selectivity and obtain a number of equivalent narrowband channels. Hence, the main challenge is that the analog preprocessing network is frequency flat and common to all the users at the transmitter side. Moreover, the effect of the signal bandwidth over the uniform linear array steering vectors has to be taken into account to design the hybrid precoders and combiners. The proposed algorithmic solution is based on the linear successive allocation, which greedily allocates streams to different users and computes the corresponding precoders and combiners. By taking into account the rank limitations imposed by the hardware at transmission and reception, the performance loss in terms of achievable sum rate for the hybrid approach is negligible. The numerical experiments show that the proposed method exhibits excellent performance with reasonable computational complexity.
Palabras clave
Millimeter wave
Hybrid precoding and combining
Wideband
Multiuser
MIMO
Beam squint
Linear successive allocation (LISA)
Hybrid precoding and combining
Wideband
Multiuser
MIMO
Beam squint
Linear successive allocation (LISA)
Descripción
© 2019 IEEE. This version of the article has been accepted for publication, after peer review. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The Version of Record is available online at: https://doi.org/10.1109/TWC.2018.2890667
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Copyright © 2019, IEEE
ISSN
1536-1276
1558-2248
1558-2248