Skip to Main content Skip to Navigation
Journal articles

Large System Analysis of Base Station Cooperation for Power Minimization

Abstract : This work focuses on a large-scale multi-cell multi-user MIMO system in which $L$ base stations (BSs) of $N$ antennas each communicate with $K$ single-antenna user equipments. We consider the design of the linear precoder that minimizes the total power consumption while ensuring target user rates. Three configurations with different degrees of cooperation among BSs are considered: the coordinated beamforming scheme (only channel state information is shared among BSs), the coordinated multipoint MIMO processing technology or network MIMO (channel state and data cooperation), and a single cell beamforming scheme (only local channel state information is used for beamforming while channel state cooperation is needed for power allocation). The analysis is conducted assuming that $N$ and $K$ grow large with a non trivial ratio $K/N$ and imperfect channel state information (modeled by the generic Gauss-Markov formulation form) is available at the BSs. Tools of random matrix theory are used to compute, in explicit form, deterministic approximations for: (i) the parameters of the optimal precoder; (ii) the powers needed to ensure target rates; and (iii) the total transmit power. These results are instrumental to get further insight into the structure of the optimal precoders and also to reduce the implementation complexity in large-scale networks. Numerical results are used to validate the asymptotic analysis in the finite system regime and to make comparisons among the different configurations.
Document type :
Journal articles
Complete list of metadata

Cited literature [26 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01633436
Contributor : Romain Couillet Connect in order to contact the contributor
Submitted on : Thursday, July 12, 2018 - 3:21:15 PM
Last modification on : Tuesday, August 31, 2021 - 3:02:07 AM
Long-term archiving on: : Tuesday, October 16, 2018 - 12:30:02 AM

File

TWC16.pdf
Files produced by the author(s)

Identifiers

Citation

Luca Sanguinetti, Romain Couillet, Mérouane Debbah. Large System Analysis of Base Station Cooperation for Power Minimization. IEEE Transactions on Wireless Communications, Institute of Electrical and Electronics Engineers, 2016, 15 (8), pp.5480-5496 ⟨10.1109/twc.2016.2560178⟩. ⟨hal-01633436⟩

Share

Metrics

Les métriques sont temporairement indisponibles