Distributed space-time coding including the golden code with application in cooperative networks

This thesis presents new methodologies to improve performance of wireless cooperative networks using the Golden Code. As a form of space-time coding, the Golden Code can achieve diversity-multiplexing tradeoff and the data rate can be twice that of the Alamouti code. In practice, however, asynchroni...

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Main Author:	Lu Ge
Format:	Default Thesis
Published:	2015
Subjects:	Mechanical engineering not elsewhere classified Distributed space-time Golden code Relay selection Multi-antenna selection Outage probability Mechanical Engineering not elsewhere classified
Online Access:	https://hdl.handle.net/2134/17052
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id	rr-article-9542090
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spelling	rr-article-95420902015-01-01T00:00:00Z Distributed space-time coding including the golden code with application in cooperative networks Lu Ge (5164712) Mechanical engineering not elsewhere classified Distributed space-time Golden code Relay selection Multi-antenna selection Outage probability Mechanical Engineering not elsewhere classified This thesis presents new methodologies to improve performance of wireless cooperative networks using the Golden Code. As a form of space-time coding, the Golden Code can achieve diversity-multiplexing tradeoff and the data rate can be twice that of the Alamouti code. In practice, however, asynchronism between relay nodes may reduce performance and channel quality can be degraded from certain antennas. Firstly, a simple offset transmission scheme, which employs full interference cancellation (FIC) and orthogonal frequency division multiplexing (OFDM), is enhanced through the use of four relay nodes and receiver processing to mitigate asynchronism. Then, the potential reduction in diversity gain due to the dependent channel matrix elements in the distributed Golden Code transmission, and the rate penalty of multihop transmission, are mitigated by relay selection based on two-way transmission. The Golden Code is also implemented in an asynchronous one-way relay network over frequency flat and selective channels, and a simple approach to overcome asynchronism is proposed. In one-way communication with computationally efficient sphere decoding, the maximum of the channel parameter means is shown to achieve the best performance for the relay selection through bit error rate simulations. Secondly, to reduce the cost of hardware when multiple antennas are available in a cooperative network, multi-antenna selection is exploited. In this context, maximum-sum transmit antenna selection is proposed. End-to-end signal-to-noise ratio (SNR) is calculated and outage probability analysis is performed when the links are modelled as Rayleigh fading frequency flat channels. The numerical results support the analysis and for a MIMO system maximum-sum selection is shown to outperform maximum-minimum selection. Additionally, pairwise error probability (PEP) analysis is performed for maximum-sum transmit antenna selection with the Golden Code and the diversity order is obtained. Finally, with the assumption of fibre-connected multiple antennas with finite buffers, multiple-antenna selection is implemented on the basis of maximum-sum antenna selection. Frequency flat Rayleigh fading channels are assumed together with a decode and forward transmission scheme. Outage probability analysis is performed by exploiting the steady-state stationarity of a Markov Chain model. 2015-01-01T00:00:00Z Text Thesis 2134/17052 https://figshare.com/articles/thesis/Distributed_space-time_coding_including_the_golden_code_with_application_in_cooperative_networks/9542090 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Mechanical engineering not elsewhere classified Distributed space-time Golden code Relay selection Multi-antenna selection Outage probability Mechanical Engineering not elsewhere classified
spellingShingle	Mechanical engineering not elsewhere classified Distributed space-time Golden code Relay selection Multi-antenna selection Outage probability Mechanical Engineering not elsewhere classified Lu Ge Distributed space-time coding including the golden code with application in cooperative networks
description	This thesis presents new methodologies to improve performance of wireless cooperative networks using the Golden Code. As a form of space-time coding, the Golden Code can achieve diversity-multiplexing tradeoff and the data rate can be twice that of the Alamouti code. In practice, however, asynchronism between relay nodes may reduce performance and channel quality can be degraded from certain antennas. Firstly, a simple offset transmission scheme, which employs full interference cancellation (FIC) and orthogonal frequency division multiplexing (OFDM), is enhanced through the use of four relay nodes and receiver processing to mitigate asynchronism. Then, the potential reduction in diversity gain due to the dependent channel matrix elements in the distributed Golden Code transmission, and the rate penalty of multihop transmission, are mitigated by relay selection based on two-way transmission. The Golden Code is also implemented in an asynchronous one-way relay network over frequency flat and selective channels, and a simple approach to overcome asynchronism is proposed. In one-way communication with computationally efficient sphere decoding, the maximum of the channel parameter means is shown to achieve the best performance for the relay selection through bit error rate simulations. Secondly, to reduce the cost of hardware when multiple antennas are available in a cooperative network, multi-antenna selection is exploited. In this context, maximum-sum transmit antenna selection is proposed. End-to-end signal-to-noise ratio (SNR) is calculated and outage probability analysis is performed when the links are modelled as Rayleigh fading frequency flat channels. The numerical results support the analysis and for a MIMO system maximum-sum selection is shown to outperform maximum-minimum selection. Additionally, pairwise error probability (PEP) analysis is performed for maximum-sum transmit antenna selection with the Golden Code and the diversity order is obtained. Finally, with the assumption of fibre-connected multiple antennas with finite buffers, multiple-antenna selection is implemented on the basis of maximum-sum antenna selection. Frequency flat Rayleigh fading channels are assumed together with a decode and forward transmission scheme. Outage probability analysis is performed by exploiting the steady-state stationarity of a Markov Chain model.
format	Default Thesis
author	Lu Ge
author_facet	Lu Ge
author_sort	Lu Ge (5164712)
title	Distributed space-time coding including the golden code with application in cooperative networks
title_short	Distributed space-time coding including the golden code with application in cooperative networks
title_full	Distributed space-time coding including the golden code with application in cooperative networks
title_fullStr	Distributed space-time coding including the golden code with application in cooperative networks
title_full_unstemmed	Distributed space-time coding including the golden code with application in cooperative networks
title_sort	distributed space-time coding including the golden code with application in cooperative networks
publishDate	2015
url	https://hdl.handle.net/2134/17052
_version_	1797284721525260288

Distributed space-time coding including the golden code with application in cooperative networks

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