Adaptive Delay-Tolerant DSTBC in Opportunistic Relaying Cooperative MIMO Systems

An adaptive delay-tolerant distributed space-time coding (DSTC) scheme with feedback is proposed for two-hop cooperative multiple-input multiple-output (MIMO) networks using an amplify-and-forward strategy and opportunistic relaying algorithms. Maximum likelihood receivers and adjustable code matric...

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Bibliographic Details
Published inarXiv.org
Main Authors Peng, T, de Lamare, R C
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 15.12.2014
Subjects
Adaptive systems
Algorithms
Computer simulation
Delay
MIMO (control systems)
Parameter estimation
Relaying
Spacetime
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ISSN2331-8422

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Summary:An adaptive delay-tolerant distributed space-time coding (DSTC) scheme with feedback is proposed for two-hop cooperative multiple-input multiple-output (MIMO) networks using an amplify-and-forward strategy and opportunistic relaying algorithms. Maximum likelihood receivers and adjustable code matrices are considered subject to a power constraint. In the proposed delay-tolerant DSTC scheme, an adjustable code matrix is employed to transform the space-time coded matrices at the relay nodes. Stochastic gradient algorithms are developed with reduced computational complexity to estimate the parameters of the code matrix. Simulation results show that the proposed algorithms obtain significant performance gains and address the delay issue in cooperative MIMO systems as compared to existing DSTC schemes.
Bibliography:content type line 50
SourceType-Working Papers-1
ObjectType-Working Paper/Pre-Print-1
ISSN:2331-8422