Graduate School and Research Center in Digital Sciences

Rate balancing for multiuser MIMO systems

Ghamnia, Imène; Slock, Dirk TM; Yuan-Wu, Yi

SPAWC 2019, 20th IEEE International Workshop on Signal Processing Advances in Wireless Communications, 2-5 July 2019, Cannes, France

We investigate and solve the rate balancing problem in the downlink for a multiuser Multiple-Input- Multiple-Output (MIMO) system. In particular, we adopt a transceiver structure to maximize the worst-case rate of the user while satisfying a total transmit power constraint. Most of the existing solutions either perform user Mean Squared Error (MSE) balancing or streamwise rate balancing, which is suboptimal in the MIMO case. The original rate balancing problem in the downlink is complicated due to the coupled structure of the transmit filters. This optimization problem is here solved in an alternating manner by exploiting weighted MSE uplink/downlink duality with proven convergence to a local optimum. Simulation results are provided to validate the proposed algorithm and demonstrate its performance improvement over unweighted MSE balancing.

Document Doi Arxiv Bibtex

Title:Rate balancing for multiuser MIMO systems
Type:Conference
Language:English
City:Cannes
Country:FRANCE
Date:
Department:Communication systems
Eurecom ref:5885
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Bibtex: @inproceedings{EURECOM+5885, doi = {http://dx.doi.org/10.1109/SPAWC.2019.8815455}, year = {2019}, title = {{R}ate balancing for multiuser {MIMO} systems}, author = {{G}hamnia, {I}m{\`e}ne and {S}lock, {D}irk {TM} and {Y}uan-{W}u, {Y}i}, booktitle = {{SPAWC} 2019, 20th {IEEE} {I}nternational {W}orkshop on {S}ignal {P}rocessing {A}dvances in {W}ireless {C}ommunications, 2-5 {J}uly 2019, {C}annes, {F}rance}, address = {{C}annes, {FRANCE}}, month = {07}, url = {http://www.eurecom.fr/publication/5885} }
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