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Geometry of the 3-user MIMO interference channel
[article]
2011
arXiv
pre-print
Preserved Fulltext
It turns out that, just as for the 3-user parallel interference channel BT09, the length of alignment paths captures the essence of the problem. ...
This paper studies vector space interference alignment for the three-user MIMO interference channel with no time or frequency diversity. ...
[2] for the multiple-input multiple-output (MIMO) X channel and subsequently by Cadambe and Jafar [3] in the context of the K-user interference channel (IC), the basic idea is to align multiple interfering ...
arXiv:1110.5092v1
fatcat:3mcpe5nlpfh3baf2fjmhtga2ea
A Stochastic Analysis of Network MIMO Systems
2016
IEEE Transactions on Signal Processing
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2016 pre-print arXiv:1604.01469v1 fatcat:ijnhtgtsarfhbonlrl4mkutykq
Along with the inevitable out-of-cluster interference, we show that the per-BS ergodic sum rate of a network MIMO system does not approach that of an isolated cell even at unrealistically large cluster ...
This expression allows us to obtain the optimal loading factor, i.e., the ratio between the number of scheduled users and the number of BS antennas, that maximizes the per-BS ergodic sum rate. ...
These distributions make further analysis using stochastic geometry feasible. 2) Analysis of Network MIMO Using Stochastic Geometry: Based on the obtained signal and inter-cluster interference power distributions ...
doi:10.1109/tsp.2016.2552502
fatcat:ws6jhswiongxdo46n3c7kmnbfm
Generalized MMSE beamforming for multicell MIMO systems with random user geometry and channel feedback latency
2014
EURASIP Journal on Wireless Communications and Networking
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The closed-form beamforming expression gives insights on how the geometry of users and channel feedback latency affect the construction of optimal beamforming vectors. ...
Our realistic multicell MIMO system model captures (i) different average SNRs of users due to random geometrical distribution of users within cells, (ii) channel feedback latency due to air propagation ...
., Ltd. and the Brain Korea 21 Plus Project in 2014. ...
doi:10.1186/1687-1499-2014-86
fatcat:udsjdcneivfwxmhhkwdb4uidrm
Optimizing large-scale MIMO cellular downlink: Multiplexing, diversity, or interference nulling?
2015
2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton)
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null interference at a chosen subset of out-of-cell users. ...
The remaining spatial dimensions provide transmit diversity. We assume perfect channel state information at the BSs and users. ...
multiplexing gain, (2) provide diversity for the scheduled users, and (3) as often stated as a major advantage of massive MIMO systems, null interference at out-of-cell users. ...
doi:10.1109/allerton.2015.7447014
dblp:conf/allerton/Hosseini0A15
fatcat:kxugoirkardqjm7yodpt6hy7tq
Modeling and analysis of ergodic capacity in network MIMO systems
2014
2014 IEEE Globecom Workshops (GC Wkshps)
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In the second part of this paper, we use tools from stochastic geometry to completely characterize the user ergodic capacity in network MIMO systems. ...
This paper studies the downlink ergodic capacity of a network multiple-input multiple-output (MIMO) system. ...
We further use tools from stochastic geometry to account for the random BS locations in characterizing the downlink ergodic capacity of network MIMO systems. ...
doi:10.1109/glocomw.2014.7063532
dblp:conf/globecom/HosseiniYA14
fatcat:3kaj2hwtmzflpiak6p3qwmvuu4
Multi User MIMO Communication: Basic Aspects, Benefits and Challenges
[chapter]
2013
Recent Trends in Multi-user MIMO Communications
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We firstly present some of the main aspects of the MIMO communication. We introduce the basic concepts of MIMO communication as well as MIMO channel modeling. ...
Finally, we introduce linear precoding techniques which could be exploited in multi-user MIMO systems in order to suppress inter-user interference. ...
R , N T ) is the rank of the channel matrix H 3. ...
doi:10.5772/57133
fatcat:7h5fe4haoresjmnhz3ooflurmm
Throughput and energy efficiency of two-tier cellular networks: Massive MIMO overlay for small cells
2016
2016 International Wireless Communications and Mobile Computing Conference (IWCMC)
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More specifically, the proposed scheme is designed by capturing the random locations of the users in both tiers by a Poisson Point Process (PPP). ...
In this paper, the downlink performance of twotier heterogenous network is investigated. ...
Notice that in case of co-channel deployment, small cell user may experience significant interference from the Massive MIMO BS. ...
doi:10.1109/iwcmc.2016.7577173
dblp:conf/iwcmc/NawazHZG16
fatcat:g3st4m5fsvbilojn5ztemn62bi
Unified Stochastic Geometry Model for MIMO Cellular Networks with Retransmissions
[article]
2016
arXiv
pre-print
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The developed paradigm accounts for signal retransmission upon decoding errors, in which the temporal correlation among the signal-to-interference plus-noise-ratio (SINR) of the original and retransmitted ...
This paper presents a unified mathematical paradigm, based on stochastic geometry, for downlink cellular networks with multiple-input-multiple-output (MIMO) base stations (BSs). ...
of the lumped interference and noise terms in (3) . ...
arXiv:1604.02960v1
fatcat:xwrqtvn5prbsxbgdcetljawqte
IEEE 802.11ac multi-user MIMO capacity and impact of antenna array geometry based on indoor measurements
2015
2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
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We have also shown, using measured path loss values, that the capacity gain of MU-MIMO to SU-MIMO goes beyond the double when the difference between the received power of each user is high. ...
Based on channel measurements conducted at 5 GHz, this paper examines the impact of transmitting antennas on the Block Diagonalization (BD) capacity gain for IEEE 802.11ac Multi-User Multiple Input Multiple ...
Each of these users is also equipped with a single or multiple antennas. The management of multiple users generates a new interference called Inter User Interference (IUI). ...
doi:10.1109/pimrc.2015.7343393
dblp:conf/pimrc/IssialiGZZ15
fatcat:xuurhwog6rbznjls7pasot6xle
Increasing throughput in cellular networks with higher-order sectorization
2010
2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers
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We study the impact of higher-order sectorization (up to 12 sectors per cell site) in cellular networks with low angle spread and a high density of users. ...
Under ideal sector patterns (with no intersector interference), the mean throughput per site scales directly with S, the number of sectors per site. ...
Compared to S = 1 whose geometry is unbounded because a user can be arbitrarily close to the serving base, the geometry for S ≥ 3 is limited as a result of interference from other sectors belonging to ...
doi:10.1109/acssc.2010.5757638
fatcat:ufloc6n6pbgizjkntzavtjrgqi
Favorable Propagation for Massive MIMO with Circular and Cylindrical Antenna Arrays
[article]
2021
arXiv
pre-print
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The analysis is based on a novel method using a Bessel function expansion, a new bounding technique and a simplified representation of inter-user interference for array geometries obeying Kronecker structure ...
Massive MIMO systems with uniform circular and cylindrical antenna arrays are studied. ...
i=2
where hi , xi are the channel vector and information-bearing so that the inter-user interference asymptotically vanishes
signal of i-th user, i = 1, ..., M ; y, ξ are the received ...
arXiv:2112.02404v1
fatcat:sc2owryvvzdgzpgi5pgxfqnijq
Interference mitigation for MIMO systems employing user-specific, linear precoding
2008
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
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User-specific, linear precoding is used extensively by almost all existing and emerging wireless MIMO standards [1], [2], [3], [4] . ...
For example, with 4 transmit antennas at the BS, 2 receive antennas at the mobile, and instant channel quality indicator (CQI), the cell capacity of a 4x2 2-clustered system with user-specific, linear ...
ACKNOWLEDGMENT Part of this work has been performed in the framework of the IST project IST-4-027756 WINNER II, which is partly funded by the European Union. ...
doi:10.1109/pimrc.2008.4699630
dblp:conf/pimrc/OsseiranZHK08
fatcat:j7xp6xvpsfbo7d63vwb2pfiqzy
Generalized MMSE Beamforming for Downlink MIMO Systems
2011
2011 IEEE International Conference on Communications (ICC)
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The derived beamforming solution captures the impacts of the random geometry and different temporal correlations of users. ...
Unlike the conventional MMSE beamforming, cellular environments are considered where each user is randomly distributed in a cell and has the different temporal correlation of fading channel. ...
In MC-MIMO, multiple BSs exploit multiple transmit antennas to mitigate the other cell interference through share of user channel information. ...
doi:10.1109/icc.2011.5962843
dblp:conf/icc/LeeSKL11
fatcat:gfn4zzjafjftxbmrek4lh3kgua
Eliminating Interference in LOS Massive Multi-User MIMO with a Few Transceivers
[article]
2019
arXiv
pre-print
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In particular, in the downlink direction, there is no need for complicated dirty paper coding; each user can use an optimal code for a single user interference-free channel. ...
It is shown that for a given number of interferers, it suffices that the number of transmit/receive chains exceeds the number of desired users by one, assuming a sufficiently large antenna array. ...
SIMULATIONS To test the proposed MU-MIMO scheme for a LOS channel, we assumed that we have two desired users and 3 undesired users which serve as out of cell interference. ...
arXiv:1903.01369v1
fatcat:vy7h7j7jw5gmpnu6kg4u7nvxaq
Power Domain Multiplexing Approach in MIMO based Non Orthogonal Multiple Access
2019
International Journal of Research in Advent Technology
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The NOMA to achieve with the more number of users in the power domain. NOMA is capable of significantly increasing the number of simultaneous connections. ...
Here, conventional MIMO system compared with the mm-wave MIMO. The channel sparasity and uncertainty in bema space MIMO system. ...
The conventional MIMO is compared with mmWave MIMO. The existing MIMO need to reduce inter beam interference realize precoding based on zero forcing [3] . ...
doi:10.32622/ijrat.732019113
fatcat:frqeg7rhtzfefant4zdpl7skk4
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