Adaptive buffer-aided space-time coding for cooperative wireless networks

In this work, we propose an adaptive buffer-aided space-time coding scheme for cooperative wireless networks. A maximum likelihood receiver and adjustable code vectors are considered subject to a power constraint with an amplify-and-forward cooperation strategy. Each relay is equipped with a buffer...

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Bibliographic Details
Published in:International Symposium on Wireless Communication Systems pp. 56 - 60
Main Authors: Tong Peng, de Lamare, Rodrigo C.
Format: Conference Proceeding Journal Article
Language:English
Published: IEEE 15.04.2016
Subjects:
5G mobile communication
Adaptive algorithms
Adjustable
Algorithms
buffer-aided relays
Buffers
Coding
cooperative systems
Detectors
Mathematical analysis
Relays
Signal to noise ratio
space-time codes
Vectors (mathematics)
Wireless communication systems
Wireless networks
Zirconium
ISSN:2154-0225
Online Access:Get full text
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Summary:In this work, we propose an adaptive buffer-aided space-time coding scheme for cooperative wireless networks. A maximum likelihood receiver and adjustable code vectors are considered subject to a power constraint with an amplify-and-forward cooperation strategy. Each relay is equipped with a buffer and is capable of storing the received symbols before forwarding them to the destination. We also present an adaptive relay selection and optimization algorithm, in which the instantaneous signal to noise ratio in each link is calculated and compared at the destination. A stochastic gradient algorithm is then developed to compute the parameters of the adjustable code vector with reduced computational complexity. Simulation results show that the proposed buffer-aided scheme and algorithm obtain performance gains over existing schemes.
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SourceType-Conference Papers & Proceedings-2
ISSN:2154-0225
DOI:10.1109/ISWCS.2015.7454407