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Multi-point to multi-point MIMO in wireless LANs

Sangki Yun, Lili Qiu, Apurv Bhartia
2013 2013 Proceedings IEEE INFOCOM  
We implement multi-point to multi-point MIMO for both uplink and downlink to enable multiple APs to simultaneously communicate with multiple clients.  ...  In particular, realizing multi-point to multi-point MIMO involves the following challenges: (i) how to accurately synchronize multiple APs in phase and time in order to successfully deliver precoded signals  ...  By using downlink and uplink transmission mechanism together, Multi-point to Multi-point MIMO can easily support ACKs.  ... 
doi:10.1109/infcom.2013.6566748 dblp:conf/infocom/YunQB13 fatcat:uts5stgy6fhkdlmp2kjldbjoiu

A Survey on MIMO Transmission with Discrete Input Signals: Technical Challenges, Advances, and Future Trends [article]

Yongpeng Wu, Chengshan Xiao, Zhi Ding, Xiqi Gao, Shi Jin
2017 arXiv   pre-print
Then, focusing on the basic point-to-point MIMO systems, we examine transmission schemes based on three most important criteria for communication systems: the mutual information driven designs, the mean  ...  square error driven designs, and the diversity driven designs.  ...  POINT-TO-POINT MIMO SYSTEM In this section, we focus on the transmission designs for point-to-point MIMO systems with discrete input signals.  ... 
arXiv:1704.07611v1 fatcat:4gep4gnbefdytjdggniocdora4

ViPer MIMO: Increasing Large MIMO Efficiency via Practical Vector-Perturbation

Christopher Husmann, Konstantinos Nikitopoulos
2018 2018 IEEE Global Communications Conference (GLOBECOM)  
However, such methods are still purely theoretical and they do not account for the practical aspects of actual wireless systems, as the corresponding complexity and latency requirements, or the need for  ...  Large multi-user MIMO systems with spatial multiplexing are among the most promising approaches for increasing wireless throughput while serving many clients.  ...  The Authors would also like to thank the members of University of Surrey 5GIC (http://www.surrey.ac.uk/5GIC) for their support.  ... 
doi:10.1109/glocom.2018.8647879 dblp:conf/globecom/HusmannN18 fatcat:2s5ijbls4zdybd3z5z4yae2wla

Efficient Autoprecoder-based deep learning for massive MU-MIMO Downlink under PA Non-Linearities [article]

Xinying Cheng
2022 arXiv   pre-print
Specifically, we aim to design the PA-aware precoder and the receive decoder by leveraging the concept of autoprecoder, whereas the end-to-end massive multiuser (MU)-MIMO downlink is designed using a deep  ...  This paper introduces a new efficient autoprecoder (AP) based deep learning approach for massive multiple-input multiple-output (mMIMO) downlink systems in which the base station is equipped with a large  ...  it not suitable for real-time massive MU-MIMO downlink systems.  ... 
arXiv:2202.03190v1 fatcat:gat72d4wpfec5omquwaqj4vtsq

1-Bit Massive MIMO Transmission: Embracing Interference with Symbol-Level Precoding [article]

Ang Li, Christos Masouros, A. Lee Swindlehurst, Wei Yu
2021 arXiv   pre-print
In this paper, we overview the recent interest in improving the error-rate performance of massive MIMO systems deployed with 1-bit DACs through precoding at the symbol level.  ...  Finally, we identify some challenges and future research directions for 1-bit massive MIMO systems that are yet to be explored.  ...  Motivated by the above, this article provides an overview of symbol-level precoding designs tailored for 1-bit massive MIMO systems through the concept of CI.  ... 
arXiv:2007.13950v3 fatcat:f73pi5hcnvhvtf5oq3j7d5lx24

Advances in smart antennas - Industrial embrace of smart antennas and MIMO

A. Hottinen, M. Kuusela, K. Hugl, J.C. Zhang, B. Raghothaman
2006 IEEE wireless communications  
We draw attention to some practical system-level and implementation aspects that need to be resolved before a successful application of beamforming or MIMO in real systems.  ...  In particular, we address the status in different industry-driven standardization fora (3GPP and IEEE 802) and discuss the rationale for possible adoption or use of such technologies in current or future  ...  The authors would like to thank Dr. Klaus I. Pedersen from Nokia Networks for useful discussions and input regarding the subject matter of the article.  ... 
doi:10.1109/mwc.2006.1678161 fatcat:vyyms3jdsjemdbpzlolovfzq54

Data-driven Precoded MIMO Detection Robust to Channel Estimation Errors

Abderrahmane Mayouche, Wallace A. Martins, Symeon Chatzinotas, Bjorn Ottersten
2021 IEEE Open Journal of the Communications Society  
We study the problem of symbol detection in downlink coded multiple-input multiple-output (MIMO) systems with precoding and without the explicit knowledge of the channel-state information (CSI) at the  ...  To mitigate the effect of CSIT deterioration at the latter, we propose learningbased techniques for hard and soft detection that use downlink precoded pilot symbols as training data.  ...  The contributions of the paper are: 1) We study the problem of symbol detection in a TDDbased coded downlink MIMO system with precoding, considering both block-level precoding (BLP) as well as symbol-level  ... 
doi:10.1109/ojcoms.2021.3079643 fatcat:x3tag3r2g5e6flx5a6x7j5gaui

Quantum Annealing for Large MIMO Downlink Vector Perturbation Precoding [article]

Srikar Kasi, Abhishek Kumar Singh, Davide Venturelli, Kyle Jamieson
2021 arXiv   pre-print
This work proposes a radically different processing architecture for the downlink VPP problem, one based on Quantum Annealing (QA), to enable the applicability of VPP to large MIMO systems.  ...  MIMO systems.  ...  Fig. 6 compares the BER performance of FSE, ZF and QAVP, and Fig. 7 reports the BER performance of QAVP at different QA compute times, for a N t = 6, N r = 6 MIMO system with 64 QAM modulation, for  ... 
arXiv:2102.12540v1 fatcat:r62aozdqbjchdmcgdmhe6uyarq

Massive MIMO: ten myths and one critical question

Emil Björnson, Erik G. Larsson, Thomas L. Marzetta
2016 IEEE Communications Magazine  
This trend will certainly continue driven by new innovative applications; for example, augmented reality and internet-of-things.  ...  We provide references to key technical papers that support our claims, while a further list of related overview and technical papers can be found at the Massive MIMO Info Point: http://massivemimo.eu  ...  AcknoWledgment We would like to thank all of our Massive MIMO research collaborators; in particular, Prof.  ... 
doi:10.1109/mcom.2016.7402270 fatcat:5ykj22vo4fdstp2ttqnbhvktqm

1-Bit Massive MIMO Transmission: Embracing Interference with Symbol-Level Precoding

Ang Li, Christos Masouros, A. Lee Swindlehurst, Wei Yu
2021 IEEE Communications Magazine  
In this paper, we overview the recent interest in improving the errorrate performance of massive MIMO systems deployed with 1-bit DACs through precoding at the symbol level.  ...  Finally, we identify some challenges and future research directions for 1-bit massive MIMO systems that are yet to be explored.  ...  With the above motivation, this paper provides an overview of CI-based symbol-level precoding designs tailored for 1bit massive MIMO systems.  ... 
doi:10.1109/mcom.001.2000601 fatcat:r6difhy5gvhrhgbxog3efawrdu

Interference Management for Future Cellular OFDMA Systems Using Coordinated Multi-Point Transmission

Lars THIELE, Volker JUNGNICKEL, Thomas HAUSTEIN
2010 IEICE transactions on communications  
Starting from interference canceling receivers over multi-user MIMO using fixed precoding to multicell interference estimation, which improves the precision of link adaptation, we discuss closed-loop cooperative  ...  Todays cellular systems reach their limits for data rate due to the continuously increasing amount of subscribers using wireless service for business purposes or in leisure time (smartphone effect).  ...  Acknowledgements The authors wish to thank F. Bauermeister, K.  ... 
doi:10.1587/transcom.e93.b.3228 fatcat:t7jmmpqqxzcrfp56hhdfcn5oxi

Performance-Driven Symbol Mapping for Downlink and Point-to-Point MIMO Systems

C. Masouros, E. Alsusa
2011 EURASIP Journal on Wireless Communications and Networking  
An adaptive symbol mapping scheme is proposed for single-user point-to-point and multiuser downlink multiple-input multiple output (MIMO) systems aiming at the minimization of the overall system bit error  ...  The proposed scheme can be used in conjunction with various conventional MIMO precoding and detection techniques.  ...  Acknowledgments This work has been jointly funded by EPSRC and Philips Research Labs, UK. The authors would like to thank Dr.  ... 
doi:10.1155/2011/376394 fatcat:46laj32s5nfwnnmwpmdpvr56ty

SoftNull: Many-Antenna Full-Duplex Wireless via Digital Beamforming

Evan Everett, Clayton Shepard, Lin Zhong, Ashutosh Sabharwal
2016 IEEE Transactions on Wireless Communications  
In this paper, we present and study a digital-controlled method, called SoftNull, to enable full-duplex in many-antenna systems.  ...  We evaluate the performance of SoftNull using measurements from a 72-element antenna array in both indoor and outdoor environments.  ...  1 We consider only TDD radios, because FDD radios, by design, do not transmit and receive in the same band and hence cannot be transformed into in-band full-duplex.  ... 
doi:10.1109/twc.2016.2612625 fatcat:fglf7jzsnngj7gl3l7oqrrnyey

Joint Transmission with Dummy Symbols for Dynamic TDD in Ultra-Dense Deployments [article]

Haris Celik, Ki Won Sung
2017 arXiv   pre-print
Numerical results show significant performance gains for uplink and downlink at low and medium utilization.  ...  To deal with BS-to-BS interference, we propose using joint transmission with dummy symbols where uplink BSs serving uplink UEs participate in the precoding.  ...  Linear precoder design based on minimizing the meansquare error for a multi-cell multi-user multiple-input multipleoutput (MIMO) system operating in dynamic TDD mode was treated in [4] [5] .  ... 
arXiv:1702.06045v2 fatcat:3uvnol3mmjeu5czst35xtqqhzu

Joint Transmission With Dummy Symbols For Dynamic Tdd In Ultra-Dense Deployments

Haris Celik, Ki Won Sung
2017 Zenodo  
Numerical results show significant performance gains for uplink and downlink at low and medium utilization.  ...  To deal with BS-to-BS interference, we propose using joint transmission with dummy symbols where uplink BSs serving uplink UEs participate in the precoding.  ...  Linear precoder design based on minimizing the meansquare error for a multi-cell multi-user multiple-input multipleoutput (MIMO) system operating in dynamic TDD mode was treated in [4] [5] .  ... 
doi:10.5281/zenodo.886558 fatcat:5frguxvjovhopaq32tmhmzllma
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