Graduate School and Research Center in Digital Sciences

On the performance of covariance shaping in massive MIMO systems

Mursia, Placido; Atzeni, Italo; Gesbert, David; Cottatellucci, Laura

CAMAD, IEEE International Workshop on Computer-Aided Modeling Analysis and Design of Communication Links and Networks, 17-19 September 2018, Barcelona, Spain

The low-rank behavior of channel covariance matrices in massive multiple-input multiple-output (MIMO) settings can be exploited for pilot decontamination and statistical precoding. In this regard, many well-known algorithms are designed building on the assumption of signal subspace separation among user equipments (UEs), which is hardly satisfied in practice. To cope with this issue, our prior work introduced the concept of covariance shaping to enforce statistical orthogonality by exploiting the multiple antennas at the UE-side in the simple case of two UEs. This paper focuses on: i) extending the covariance shaping approach to a more general multi-user setting, and ii) evaluating its performance in several realistic scenarios, providing useful insights into its behavior and practical implementation.

Document Doi Bibtex

Title:On the performance of covariance shaping in massive MIMO systems
Keywords:Covariance shaping, massive MIMO, multi-user MIMO, pilot contamination, statistical beamforming
Department:Communication systems
Eurecom ref:5674
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Bibtex: @inproceedings{EURECOM+5674, doi = {}, year = {2018}, title = {{O}n the performance of covariance shaping in massive {MIMO} systems}, author = {{M}ursia, {P}lacido and {A}tzeni, {I}talo and {G}esbert, {D}avid and {C}ottatellucci, {L}aura}, booktitle = {{CAMAD}, {IEEE} {I}nternational {W}orkshop on {C}omputer-{A}ided {M}odeling {A}nalysis and {D}esign of {C}ommunication {L}inks and {N}etworks, 17-19 {S}eptember 2018, {B}arcelona, {S}pain }, address = {{B}arcelona, {SPAIN}}, month = {09}, url = {} }
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