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Communication Dans Un Congrès Année : 2020

A Rate Splitting Strategy for Mitigating Intra-Cell Pilot Contamination in Massive MIMO

Bruno Clerckx
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Luca Sanguinetti
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Dirk Slock

Résumé

The spectral efficiency (SE) of Massive MIMO (MaMIMO) systems is affected by low quality channel estimates. Rate-Splitting (RS) has recently gained some interest in multiuser multiple antenna systems as an effective means to mitigate the multiuser interference due to imperfect channel state information. This paper investigates the benefits of RS in the downlink of a single-cell MaMIMO system when all the users use the same pilot sequence for channel estimation. Novel expressions for the SE achieved in the downlink by a single-layer RS strategy (that relies on a single successive interference cancellation at each user side) are derived and used to design precoding schemes and power allocation strategies for common and private messages. Numerical results are used to show that the proposed RS solution achieves higher spectral efficiency that conventional MaMIMO with maximum ratio precoding.
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Dates et versions

hal-04138278 , version 1 (22-06-2023)

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Citer

Christo Kurisummoottil Thomas, Bruno Clerckx, Luca Sanguinetti, Dirk Slock. A Rate Splitting Strategy for Mitigating Intra-Cell Pilot Contamination in Massive MIMO. ICC 2020, IEE International Conference on Communications, IEEE, Jun 2020, Dublin, Ireland. pp.1-6, ⟨10.1109/ICCWorkshops49005.2020.9145128⟩. ⟨hal-04138278⟩

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