Ecole d'ingénieur et centre de recherche en Sciences du numérique

A refined analysis of the gap between expected rate for partial CSIT and the massive MIMO rate limit

Gopala, Kalyana; Slock, Dirk TM

ICASSP 2018, IEEE International Conference on Acoustics, Speech and Signal Processing, 15-20 April 2018, Calgary, Alberta, Canada

Optimal BeamFormers (BFs) that maximize theWeighted Sum Rate (WSR) for a Multiple-Input Multiple-Output (MIMO) interference broadcast channel (IBC) remains an important research area. Under practical scenarios, the problem is compounded by the fact that only partial channel state information at the transmitter (CSIT) is available. Hence, a typical choice of the optimization metric is the Expected Weighted Sum Rate (EWSR). However, the presence of the expectation operator makes the optimization a daunting task. On the other hand, for the particular, but significant, special case of massive MIMO (MaMIMO), the EWSR converges to Expected Signal covariance Expected Interference covariance based WSR (ESEI-WSR) and this metric is more amenable to optimization. Recently, [1] considered a multi-user Multiple-Input Single-Output (MISO) scenario and proposed approximating the EWSR by ESEI-WSR. They then derived a constant bound for this approximation. This paper performs a refined analysis of the gap between EWSR and ESEI-WSR criteria for finite antenna dimensions.

Document Doi Arxiv Bibtex

Titre:A refined analysis of the gap between expected rate for partial CSIT and the massive MIMO rate limit
Mots Clés:Beamforming, partial CSIT, EWSR, ESEIWSR, MaMIMO
Type:Conférence
Langue:English
Ville:Calgary
Pays:CANADA
Date:
Département:Systèmes de Communication
Eurecom ref:5371
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Bibtex: @inproceedings{EURECOM+5371, doi = {http://dx.doi.org/10.1109/ICASSP.2018.8461281}, year = {2018}, title = {{A} refined analysis of the gap between expected rate for partial {CSIT} and the massive {MIMO} rate limit}, author = {{G}opala, {K}alyana and {S}lock, {D}irk {TM}}, booktitle = {{ICASSP} 2018, {IEEE} {I}nternational {C}onference on {A}coustics, {S}peech and {S}ignal {P}rocessing, 15-20 {A}pril 2018, {C}algary, {A}lberta, {C}anada }, address = {{C}algary, {CANADA}}, month = {04}, url = {http://www.eurecom.fr/publication/5371} }
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