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Content Provider | IET Digital Library |
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Author | Singh, Vindheshwari P. Chaturvedi, Ajit K. |
Abstract | In this study, the authors consider robust transceiver design for amplify-and-forward relay aided multiple-input multiple-output interference systems assuming direct transmitter–receiver links and imperfect channel state information (CSI). The imperfect CSI of each link consists of the estimated channel and the covariance matrix of the channel estimation error. The authors address two transceiver optimisation problems: one is minimising the sum of averaged mean squared error (MSE) at all the receivers and the other is minimising the maximum averaged MSE among all the receivers, both of which are subject to power constraints at the transmitter and relay nodes. The formulated sum-MSE minimisation and max-MSE minimisation based optimisation problems are non-convex with matrix variables and therefore a globally optimal solution is difficult to obtain. To solve these non-convex optimisation problems, they develop sub-optimal iterative algorithms based on alternating minimisation approach to jointly optimise the precoding matrices at the transmitter and relay nodes and the receiver filter matrices. Simulation results demonstrate the effectiveness of the proposed algorithms and their improved performance against CSI uncertainties at similar computational cost as the existing non-robust designs. |
Starting Page | 51 |
Ending Page | 63 |
Page Count | 13 |
ISSN | 17519675 |
Volume Number | 12 |
e-ISSN | 17519683 |
Issue Number | Issue 1, Feb (2018) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-spr/12/1 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2017.0054 |
Journal | IET Signal Processing |
Publisher Date | 2017-08-03 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Alternating Minimisation Approach Amplify And Forward Communication Amplify-and-forward Relay Aided Multiple-input Multiple-output Interference System Averaged Mean Squared Error Minimization Channel Estimation Channel Estimation Error Code Communication Channel Equalisation And Identification Concave Programming Covariance Matrices Covariance Matrix CSI Direct Transmitter-receiver Link Electromagnetic Compatibility Imperfect Channel State Information Interference Interpolation And Function Approximation Iterative Method Linear Algebra Matrix Variables Max-MSE Minimisation Based Optimisation Problem Mean Square Error Method MIMO Communication Minimax Technique Minimisation Nonconvex Optimisation Problem Numerical Analysis Optimisation Technique Power Constraint Precoding Precoding Matrix Radio Frequency Interference Radio Link Radio Link And Equipment Radio Transceivers Receiver Filter Matrix Relay Network Relay Node Statistically Robust Transceiver Design Algorithm Sub-optimal Iterative Algorithm Sum-MSE Minimisation Telecommunication |
Content Type | Text |
Resource Type | Article |
Subject | Signal Processing Electrical and Electronic Engineering |
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