Proceedings ArticleDOI
Non linear space-time equalizer for single-user hybrid mmWave massive MIMO systems
Roberto Magueta,Daniel Castanheira,Adão Silva,Rui Dinis,Atilio Gameiro +4 more
- pp 177-182
TLDR
The performance results have shown that the performance of the hybrid iterative space equalizer is close to the fully digital counterpart after only a few iterations, and clearly outperforms the linear receivers recently proposed for hybrid mmW massive MIMO architectures.Abstract:
The aim of this manuscript is to propose a new hybrid iterative block space-time receiver structure for millimeter wave (mmW) systems, to efficiently separate the spatial streams. We consider that both the transmitter and the received are equipped with a large antenna array and the number of radio frequency (RF) chains is lower that the number of antennas. The analog and digital parts of the equalizer are jointly optimized using as a metric the mean square error (MSE) between the transmitted data vector and its estimate after the digital equalizer. The specificities of the analog domain impose several constraints in the joint optimization. To efficiently deal with the constraints the analog part is selected from a dictionary based on the array response vectors. Our performance results have shown that the performance of the hybrid iterative space equalizer is close to the fully digital counterpart after only a few iterations. Moreover, it clearly outperforms the linear receivers recently proposed for hybrid mmW massive MIMO architectures.read more
Citations
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Journal ArticleDOI
A Kalman Based Hybrid Precoding for Multi-User Millimeter Wave MIMO Systems
TL;DR: A Kalman-based formulation for hybrid analog/digital precoding in multi-user environment is proposed, and an analytical expression of the error between the transmitted and estimated data is formulated, so that the Kalman algorithm at the base station does not require information on the estimated data at the mobile stations, and instead, relies only on the precoding/combining matrix.
Dissertation
Performance evaluation of hybrid millimeter wave systems under limited information
TL;DR: A low-overhead feedback channel quantization scheme is proposed and a single-user mmW massive MIMO system is evaluated under the developed quantization strategy, showing that a very low number of bits is needed to obtain a performance close to the one obtained with perfect channel information.
Journal ArticleDOI
System theory based multiple beamforming
TL;DR: The reduced-order model is built and the robust solution is found for a multiple beamforming system and the Monte Carlo results show that the proposed multiplebeamforming system yields significant performance against over existing methods.
References
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Fredrik Rusek,Daniel Persson,Buon Kiong Lau,Erik G. Larsson,Thomas L. Marzetta,Fredrik Tufvesson +5 more
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Journal ArticleDOI
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Fredrik Rusek,Daniel Persson,Buon Kiong Lau,Erik G. Larsson,Thomas L. Marzetta,Ove Edfors,Fredrik Tufvesson +6 more
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Journal ArticleDOI
Millimeter-wave beamforming as an enabling technology for 5G cellular communications: theoretical feasibility and prototype results
Won-Il Roh,Ji-Yun Seol,Jeong-Ho Park,Byunghwan Lee,Jae-kon Lee,Yung-soo Kim,Jae-Weon Cho,Kyungwhoon Cheun,Farshid Aryanfar +8 more
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