Graduate School and Research Center in Digital Sciences

Rate balancing for multiuser multicell downlink MIMO systems

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

EUSIPCO 2019, 27th European Signal Processing Conference, 2-6 September 2019, Coruna, Spain

In this paper, we consider rate balancing problem for the Multiple-Input Multiple-Output (MIMO) Interfering Broadcast Channel (IBC), i.e. the multiuser multicell downlink (DL). We address the MIMO DL beamformer design and power allocation for maximizing the minimum weighted user rate with sum-power constraint with the weighting reflecting user priorities. The proposed solution is based on reformulating the max-min user rate optimization problem into a weighted Mean Squared Error (MSE) balancing problem. Employing MSE duality between DL channel and its equivalent Uplink (UL) channel, we propose an iterative algorithm to jointly design the transceiver filters and the power allocation. Simulation results verify the computational efficiency of the proposed algorithm and provide appreciable performance improvements as compared to optimizing the conventional unweighted per user MSE.

Document Doi Bibtex

Title:Rate balancing for multiuser multicell downlink MIMO systems
Keywords:rate balancing, max-min fairness, MSE duality, tranceiver optimization, multiuser multicell MIMO systems
Type:Conference
Language:English
City:Coruna
Country:SPAIN
Date:
Department:Communication systems
Eurecom ref:5974
Copyright: © EURASIP. Personal use of this material is permitted. The definitive version of this paper was published in EUSIPCO 2019, 27th European Signal Processing Conference, 2-6 September 2019, Coruna, Spain and is available at : http://dx.doi.org10.23919/EUSIPCO.2019.8902749
Bibtex: @inproceedings{EURECOM+5974, doi = {http://dx.doi.org10.23919/EUSIPCO.2019.8902749}, year = {2019}, title = {{R}ate balancing for multiuser multicell downlink {MIMO} systems}, author = {{G}hamnia, {I}m{\`e}ne and {S}lock, {D}irk {TM} and {Y}uan-{W}u, {Y}i}, booktitle = {{EUSIPCO} 2019, 27th {E}uropean {S}ignal {P}rocessing {C}onference, 2-6 {S}eptember 2019, {C}oruna, {S}pain}, address = {{C}oruna, {SPAIN}}, month = {09}, url = {http://www.eurecom.fr/publication/5974} }
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