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A fair MU-MIMO scheme for IEEE 802.11ac
2012 International Symposium on Wireless Communication Systems (ISWCS), 2012The next generation of wireless local area networks (WLANs), currently standardized within IEEE 802.11ac, will surely adopt multiuser multiple-input multiple-output (MUMIMO) technology. This paper addresses the design of a multiuser proportional fair scheduling scheme, based on MU-MIMO orthogonal frequency division multiplexing (OFDM), that is able to ...
Mounir Esslaoui +2 more
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User-scheduling algorithm for a MU-MIMO system
SPIE Proceedings, 2015A user-scheduling algorithm for MU-MIMO systems is presented in this paper. The algorithm is a codebook based precoding method which can be suitable for the IEEE 802.16m mobile broadband standard. The proposed algorithm can effectively improve the sum capacity and fairness among the users.
Haiyang Yu, Jaeho Choi
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On the impact of residual CFO in UL MU-MIMO
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016Uplink multiuser MIMO (UL MU-MIMO) is a new feature introduced in 802.11ax (currently under development). This paper investigates the residual carrier frequency offset (CFO) impact on the performance of UL MU-MIMO OFDM systems. We show that if a station (STA) has zero residual CFO, then its packet error rate (PER) will not suffer from other STAs that ...
Feng Jiang, Ron Porat, Tu Viet Nguyen
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Coverage Analysis of Downlink MU-MIMO Cellular Networks
IEEE Communications Letters, 2021In this letter, we analyze the coverage performance of multi-user multiple-input multiple-output (MU-MIMO) downlink cellular networks. We model the locations of the base stations and mobile users using Poisson Point Processes and employ maximum ratio transmission precoding at the base station.
Ali Arsal, M. Reha Civanlar, Murat Uysal
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Codeword based power loading in MU-MIMO
2016 IEEE Wireless Communications and Networking Conference, 2016Precoding is a common technique used in wireless transmissions where multiple data streams are spatially multiplexed by an access point or base station to a number of receiving stations by using multiple transmit antennas. The design of the precoder can be divided into two separate functional blocks: 1) the transmit filters, for example zero-forcing or
Filippo Tosato, Magnus Sandell
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Scalable user selection for MU-MIMO networks
IEEE INFOCOM 2014 - IEEE Conference on Computer Communications, 2014In a multi-user MIMO (MU-MIMO) network, an AP with M antennas can only serve up to M users out of a large user population. The M users’ rates are inter-coupled and depend on their channel orthogonality. Substantial theoretical studies focused on selecting users to maximize capacity, but they require feedback of channel state information (CSI) from all ...
Xiufeng Xie, Xinyu Zhang 0003
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Networking with massive MU-MIMO base stations
Proceedings of the 4th workshop on All things cellular: operations, applications, & challenges, 2014Information theory has shown tremendous benefits in net- work capacity and energy efficiency by using a large number of antennas on base stations to implement MU-MIMO tech- nologies. We have recently prototyped two generations of MU-MIMO many-antenna base station.
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System performance of PMI-based MU-MIMO
2012 3rd IEEE International Conference on Network Infrastructure and Digital Content, 2012Single-user multi-antenna technologies are well supported in current standard specifications like LTE Release 8. To meet the IMT-Advanced performance requirements, multi-user MIMO is an attractive technology which could improve cell average spectral efficiency in some scenarios by serving multiuser simultaneously on the same frequency resource. In this
Yingpei Huang +2 more
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GMD-enhanced MU-MIMO for IEEE 802.11ac
2013 IFIP Wireless Days (WD), 2013This paper proposes a multiuser multiple-input multiple-output orthogonal frequency division multiplexing (MU-MIMO-OFDM) technique suitable for IEEE 802.11ac. The proposed approach is based on a judicious combination of singular value- and geometric mean decompositions (SVD/GMD) of the channel matrix.
Aleksandra S. Panajotovic +2 more
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MU-MIMO Decomposition Transmission with Limited Feedback
2007 IEEE Wireless Communications and Networking Conference, 2007Downlink multi-user multiple-input multiple-output (MU-MIMO) transmission techniques have gained much attention recently because of their potential to significantly increase system capacity compared to single-user transmission by separating multiple users in the space domain through appropriate signal processing. Unfortunately, these techniques require
Cheng Wang, Ross D. Murch
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