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Decentralized transceiver optimization for multi-relay aided multiuser MIMO networks
2014
Science China Information Sciences
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In the first proposed algorithm, the generalized channel inversion precoding is used at the BS to avoid the second hop channel sharing requirements among the relay nodes, and decentralized transceiver ...
In this paper, the decentralized transceivers and corresponding channel state information (CSI) signaling concepts are proposed for weighted sum rate (WSR) maximization, via linear downlink transceiver ...
Joint source precoder design In Subsection 3.1, to avoid the second hop CSI sharing of the relay nodes, the channel inversion based BS precoder is derived as shown in (17) . ...
doi:10.1007/s11432-014-5088-6
fatcat:w2g5wcnhebbaxahwa4amzy6cwi
Guiding Blind Transmitters: Degrees of Freedom Optimal Interference Alignment Using Relays
2013
IEEE Transactions on Information Theory
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Special cases of the X channel and interference channel are investigated to obtain further design insights. ...
Index Terms--user interference channel, channel state information (CSI), degrees of freedom (DoF), interference alignment, relay, X channel. ...
RELAY-AIDED INTERFERENCE ALIGNMENT FOR X CHANNEL WITHOUT CSIT In this section, we provide the DoF for the X channel, with the assumption that the transmitters have no CSI, and relay nodes with global CSI ...
doi:10.1109/tit.2013.2258713
fatcat:puvpwk5ig5hgbjf5p5ajev4zsi
Relay Precoding for Non-Regenerative MIMO Relay Systems with Partial CSI in the Presence of Interferers
2012
IEEE Transactions on Wireless Communications
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Index Terms-Co-channel interferer, multiple-input multipleoutput (MIMO), non-regenerative relay, partial CSI, precoder design. ...
The relay has the perfect channel state information (CSI) of the source-relay link and only the covariance information of the relay-destination link. ...
In these works [6] - [12] , the full CSI is assumed to be known at the source and/or the relay to design the source precoder and/or the relay precoder. ...
doi:10.1109/twc.2012.020812.111246
fatcat:44wrlqvnire3vppwpclcz6gpsu
A Survey of Optimization Approaches for Wireless Physical Layer Security
[article]
2019
arXiv
pre-print
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The topics on physical-layer security designs are then summarized from resource allocation, beamforming/precoding, and antenna/node selection and cooperation. ...
Furthermore, the impacts of channel state information on optimization and design are discussed. Finally, the survey concludes with the observations on potential future directions and open challenges. ...
The Perfect CSI of All Channels In the literature on physical layer security, the perfect CSI of all channels has been commonly assumed for designing the optimal transmission scheme which can match the ...
arXiv:1901.07955v1
fatcat:3pb27rlc45c3dmnjgwmjyspvb4
A Survey on Beamforming Techniques for Wireless MIMO Relay Networks
2013
International Journal of Antennas and Propagation
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Thereby, it focuses on recently developed procedures for interference modeling and mitigation, BF channel modeling, channel estimation and feedback, complexity and power consumption, adaptive BF for multiuser ...
One of the major challenges the mobile broadband community faces is the exponential increase in mobile data traffic, even more so, for cell-edge users. ...
Conflict of Interests The author declares that there is no conflict of interests regarding the publication of this paper. ...
doi:10.1155/2013/745018
fatcat:vclhrye455aedj3fsin43j3cqm
Joint Lattice-Reduction-Aided Precoder Design for Multiuser MIMO Relay System
2016
KSII Transactions on Internet and Information Systems
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This implementable precoder design combines nonlinear processing at the base station (BS) and linear processing at the relay. ...
This paper introduces a new viewpoint for utilizing LR in multiuser MIMO relay systems. ...
Thus, research on precoder designs for multiuser relay system mainly focuses on cooperation under the AF protocol. ...
doi:10.3837/tiis.2016.07.008
fatcat:n3brisqwr5hnpfwh2ix4n4mzle
Robust Multibranch Tomlinson–Harashima Precoding Design in Amplify-and-Forward MIMO Relay Systems
2014
IEEE Transactions on Communications
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For each parallel branch, the proposed robust nonlinear transceiver design consists of THP at the source along with a linear precoder at the relay and a linear minimum-mean-squared-error (MMSE) receiver ...
By taking the channel uncertainties into account, the source and relay precoders are jointly optimised to minimise the mean-squared-error (MSE). ...
Here, we further incorporate the linear relay precoded system without source precoding (U-L) [4] and the robust linear relay precoded system without source precoding (U-L-robust) [6] for comparison ...
doi:10.1109/tcomm.2014.2359438
fatcat:sq7g4vaexjajhfi2uggjjc5p2u
Robust Multi-Branch Tomlinson-Harashima Precoding in Cooperative MIMO Relay Systems
[article]
2014
arXiv
pre-print
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For each parallel branch, the proposed robust nonlinear transceiver design consists of THP at the source along with a linear precoder at the relay and a linear minimum-mean-squared-error (MMSE) receiver ...
By taking the channel uncertainties into account, the source and relay precoders are jointly optimised to minimise the mean-squared-error (MSE). ...
Here, we further incorporate the linear relay precoded system without source precoding (U-L) [4] and the robust linear relay precoded system without source precoding (U-L-robust) [6] for comparison ...
arXiv:1409.5932v1
fatcat:2jjlyhgmgjgitoxmdlgmp74nhu
Joint source and relay precoding for generally correlated MIMO with full and partial CSIT
2017
EURASIP Journal on Wireless Communications and Networking
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In this paper, we jointly design linear source and relay precoders for two-hop MIMO relaying. ...
Two different scenarios of channel state information (CSI) are assumed to be available at the transmitters: full CSI of both hops (the full CSIT) and full CSI of the source-relay hop only plus the covariance ...
When having full CSI of the source-relay link and covariance information of the relay-destination link at the relay, relay precoders are designed for maximizing the MI [5, 6] and for minimizing the MSE ...
doi:10.1186/s13638-017-0826-2
fatcat:psb226r2bvbohpno5ncjnzb6ku
Cooperative Jamming with AF Relay in Power Monitoring and Communication Systems for Mining
2023
Electronics
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To maximize the secrecy rate of the communications, an effective block coordinate descent algorithm is used to design the precoding and jamming matrix at both the source and the relay. ...
Therefore, in this paper, we investigate the PLS of an amplify-and-forward relay-aided system in power monitoring and communication systems for mining, with the consideration of multiple eavesdroppers. ...
Considering the imperfect CSI and multiple eavesdroppers, we use an effective BCD algorithm to design the precoding and jamming matrix at both the source and the relay, in which maximizing the secrecy ...
doi:10.3390/electronics12041057
fatcat:p4hx2ufxkbg6bahcnw2ulcxzky
Optimal Source and Relay Design for Multiuser MIMO AF Relay Communication Systems With Direct Links and Imperfect Channel Information
2016
IEEE Transactions on Wireless Communications
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In this paper, we propose statistically robust design for multiuser multiple-input multiple-output (MIMO) relay systems with direct source-destination links and imperfect channel state information (CSI ...
We develop two iterative methods to solve the nonconvex joint source, relay, and receiver optimization problem. ...
ACKNOWLEDGMENT The authors would like to thank the editor and anonymous reviewers for their valuable comments and suggestions that improved the quality of the paper. ...
doi:10.1109/twc.2015.2497683
fatcat:e7umdhjaszeq3iizraxbd7q2aa
Robust Design for Amplify-and-Forward MIMO Relay Systems With Direct Link and Imperfect Channel Information
2015
IEEE Transactions on Wireless Communications
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In this paper, we propose statistically robust design for multiple-input multiple-output (MIMO) relay systems with the direct source-destination link and imperfect channel state information (CSI). ...
In particular, we derive the structure of the optimal relay precoding matrix and show the effect of CSI mismatch on the structure of the optimal robust source and relay matrices. ...
ACKNOWLEDGMENT The authors would like to thank the editor and anonymous reviewers for their valuable comments and suggestions that improved the quality of the paper. ...
doi:10.1109/twc.2014.2347274
fatcat:3iblhno22rakfdzh3nunweivly
Guiding Blind Transmitters: Degrees of Freedom Optimal Interference Alignment Using Relays
[article]
2013
arXiv
pre-print
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The file type is application/pdf.
Special cases of the X channel and interference channel are investigated to obtain further design insights. ...
The DoF for the case when relays only have delayed CSI is also investigated, and it is shown that with delayed CSI at the relay the optimal DoF with full CSIT cannot be achieved. ...
RELAY-AIDED INTERFERENCE ALIGNMENT FOR X CHANNEL WITHOUT CSIT In this section, we provide the DoF for the M × N X channel, with the assumption that the transmitters have no CSI, and relay nodes with global ...
arXiv:1304.5700v1
fatcat:4gdldixe35d3xdakcdto3bor5e
Transceiver Design Using Local Channel State Information at Relays for A Multi-Relay Multi-User MIMO Network
2013
KSII Transactions on Internet and Information Systems
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Local CSI at a relay is defined as the CSI of the channel between BS and the relay in the 1 st hop link, and the CSI of the channel between the relay and all users in the 2 nd hop link. ...
The design criterion is to minimize sum mean squared error (SMSE) under relay sum power constraint (RSPC) where only local channel state information (CSI)s are available at relays. ...
Focuses of [9] [10] were limited to the optimization of relay precoders without considering the source precoder structure. Moreover, each source and destination is paired one to one. ...
doi:10.3837/tiis.2013.11.004
fatcat:zfqashfeb5eltlzg5cciydcvly
Relay-Pair Selection in Buffer-Aided Successive Opportunistic Relaying using a Multi-Antenna Source
[article]
2018
arXiv
pre-print
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First, by assuming global channel state information (CSI), we show that the detrimental effect of IRI can be alleviated by precoding at the source, mitigating or even fully cancelling the interference. ...
For the case when channel state information is only available at the receiver side (CSIR), we propose a relay selection policy that employs a phase alignment technique to reduce the IRI. ...
Buffer-Aided Relay Selection Based on Buffer-Aided Source Precoding The goal is to design a precoding matrix at the source such that, at each time slot n the {S→R} link for the relay selected to receive ...
arXiv:1703.03338v2
fatcat:vqrotqxjvrfs5lcimytxyzesre
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