Reference : Joint subchannel allocation and hybrid precoding design for mmWave multi-user OFDMA s...
Scientific congresses, symposiums and conference proceedings : Paper published in a book
Engineering, computing & technology : Electrical & electronics engineering
Security, Reliability and Trust
http://hdl.handle.net/10993/47080
Joint subchannel allocation and hybrid precoding design for mmWave multi-user OFDMA systems
English
Ha, Vu Nguyen mailto [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
Nguyen, Duy H. N. []
Frigon, Jean-Francois []
8-Oct-2017
2017 IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) proceedings
IEEE
1-5
Yes
978-1-5386-3529-2
Montreal, QC
Canada
2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
from 08-10-2017 to 13-10-2017
[en] joint subchannel allocation ; hybrid precoding design ; mmWave multiuser OFDMA systems
[en] This paper studies hybrid precoding (HP) for mmWave multi-user OFDMA systems with sub-carrier allocation (SA) consideration. Constrained by a computation limit on the total number of data streams that can be processed, we aim to jointly optimize the SA and HP design to maximize the system sum-rate. This optimization is first formulated as a computation sparsity-constrained HP design problem, which is non-convex and challenging to solve. We then propose two-stage solution approach to tackle the problem. In stage one, we optimize the fully digital precoding (FDP) considering the computation sparsity constraint. In the second stage, we exploit an alternating MMSE minimization algorithm to reconstruct the HP's based on the achieved FDP. A novel analog precoding design, namely “Projected-Gradient-Descent based”, is then proposed to optimize the analog part of the HP's.
http://hdl.handle.net/10993/47080

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