Predictive relay-selection cooperative diversity in land mobile satellite systems

dc.contributor.authorAwoyemi, Babatunde Seun
dc.contributor.authorWalingo, Tom
dc.contributor.authorTakawira, Fambirai
dc.date.accessioned2016-04-25T10:15:12Z
dc.date.issued2016-03
dc.description.abstractCooperative diversity protocols promise a new dimension of diversity that provides better communication by engaging nearby relays in forming a ‘virtual’ array of antennas for combined signal transmission. The current incremental cooperative diversity algorithms incrementally select best relay(s) to cooperate based on the channel quality reported by the relays. However, the algorithms do not take into consideration the fact that the chosen best relay(s) at estimation may not always be best at the time of communication. This is due to the time delay between the relay selection and its transmission of signal (problem of outdated Channel Quality Information). To solve this problem, the concept of channel prediction is introduced and employed whereby each relay determines a predicted value of its Channel Quality Information (CQI) based on its past measurements. The paper therefore develops a novel predictive relay-selection (PRS) cooperative diversity model which seeks to improve Land Mobile Satellite (LMS) communication through prediction protocols. In the model, the chosen best relay is the one with the best predicted CQI value instead of the traditional outdated one. Performance analysis of outage probability and average bit error probability for the newly developed PRS cooperation shows that the PRS cooperation is better than direct and outdated CQI relay communication.en_ZA
dc.description.departmentElectrical, Electronic and Computer Engineeringen_ZA
dc.description.embargo2017-03-31
dc.description.librarianhb2016en_ZA
dc.description.urihttp://onlinelibrary.wiley.com/doi/10.1002/sat.1118en_ZA
dc.identifier.citationAwoyemi, B, Walingo, T & Takawira , F 2016, 'Predictive relay-selection cooperative diversity in land mobile satellite systems', International Journal of Satellite Communications and Networking, vol. 34, no. 2, pp. 277-294.en_ZA
dc.identifier.issn1542-0973 (print)
dc.identifier.issn1542-0981 (online)
dc.identifier.other10.1002/sat.1118
dc.identifier.urihttp://hdl.handle.net/2263/52146
dc.language.isoenen_ZA
dc.publisherWileyen_ZA
dc.rights© 2015 John Wiley & Sons, Ltd. This is the pre-peer reviewed version of the following article : Predictive relay-selection cooperative diversity in land mobile satellite systems in International Journal of Satellite Communications and Networking, vol. 34, no. 2, pp. 277-294, 2016. doi : 10.1002/sat.1118, which has been published in final form at : http://onlinelibrary.wiley.com/doi/10.1002/sat.1118.en_ZA
dc.subjectCooperative diversityen_ZA
dc.subjectIncremental relayingen_ZA
dc.subjectPrediction algorithmsen_ZA
dc.subjectChannel quality information (CQI)en_ZA
dc.subjectPredictive relay-selection (PRS)en_ZA
dc.subjectLand mobile satellite (LMS)en_ZA
dc.titlePredictive relay-selection cooperative diversity in land mobile satellite systemsen_ZA
dc.typePostprint Articleen_ZA

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