Non-Coherent Massive MIMO-OFDM Down-Link Based on Differential Modulation

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Show simple item record Chen Hu, Kun Liu, Yong García-Armada, Ana 2021-05-28T12:03:14Z 2021-05-28T12:03:14Z 2020-10
dc.identifier.bibliographicCitation Chen-Hu, K., Liu, Y. & Armada, A. G. (2020). Non-Coherent Massive MIMO-OFDM Down-Link Based on Differential Modulation. IEEE Transactions on Vehicular Technology, 69(10), pp. 11281–11294.
dc.identifier.issn 0018-9545
dc.description.abstract Orthogonal frequency division multiplexing (OFDM) and multiple-input multiple-output (MIMO) are wireless radio technologies adopted by the new Fifth Generation (5G) of mobile communications. A very large number of antennas (massive MIMO) is used to perform the beam-forming of the transmitted signal, either to reduce the multi-user interference (MUI), when spatially multiplexing several users, or to compensate the path-loss when higher frequencies than microwave are used, such as the millimeter-waves (mm-Waves). Usually, a coherent demodulation scheme (CDS) is used in order to exploit MIMO-OFDM, where the channel estimation and the pre/post-equalization processes are complex and time consuming operations, which require a considerable pilot overhead and also increase the latency of the system. As an alternative, non-coherent techniques based on a differential modulation scheme have been proposed for the up-link (UL). However, it is not straightforward to extend these proposals to the down-link (DL) due to the (usually) reduced number of antennas at the receiver side. In this paper we overcome this problem, and assuming that each user equipment (UE) is only equipped with one single antenna, we propose the combination of beam-forming with a differential modulation scheme for the DL, enhanced by the frequency diversity. The new transmission and reception schemes are described, and the signal-to-interference-plus-noise ratio (SINR) and the complexity are analysed. The numerical results verify the accuracy of the analysis and show that our proposal outperforms the existing CDS with a significant lower complexity.
dc.description.sponsorship This work was supported by project TERESA-ADA (TEC2017-90093-C3-2-R) (MINECO/AEI/FEDER, UE).
dc.format.extent 14
dc.language.iso eng
dc.publisher IEEE
dc.rights © 2020, IEEE
dc.subject.other Beamforming
dc.subject.other Differential phase shift keying
dc.subject.other MIMO
dc.subject.other Non-coherent
dc.subject.other OFDM
dc.title Non-Coherent Massive MIMO-OFDM Down-Link Based on Differential Modulation
dc.type article
dc.subject.eciencia Telecomunicaciones
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. TEC2017-90093-C3-2-R
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 11281
dc.identifier.publicationissue 10
dc.identifier.publicationlastpage 11294
dc.identifier.publicationtitle IEEE Transactions on Vehicular Technology
dc.identifier.publicationvolume 69
dc.identifier.uxxi AR/0000027561
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.affiliation.dpto UC3M. Departamento de Teoría de la Señal y Comunicaciones
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Comunicaciones
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