naa a22 4500 510792359 CHVBK 20180411083324.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0972-0 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0972-0 Jointing Adaptive Modulation Relay Selection Protocols for Two-Way Opportunistic Relaying Systems with Amplify-and-Forward Policy [Elektronische Daten] [Hui Zhi, Longxiang Yang, Hongbo Zhu] Two novel best-relay selection protocols, the jointing adaptive modulation max-min (AM-MM) protocol and the jointing adaptive modulation maximum harmonic mean (AM-MHM) protocol, are proposed for two-way opportunistic relaying systems with amplify-and-forward policy (TWOR-AF). By integrating the adaptive modulation with the conventional max-min (NonAM-MM) and maximum harmonic mean protocols, the effect of the modulation schemes used at both sources is exploited perfectly in the proposed AM-MM and AM-MHM protocols. The analytical expressions to the approximate upper bounds of overall average symbol error probability (SEP) for TWOR-AF systems with these different relay selection protocols are obtained through theoretic analysis. The numerical results demonstrate that the average SEP of TWOR-AF systems can be improved greatly when the proposed jointing adaptive modulation relay selection protocols are performed. Furthermore, in certain channel realizations, the adaptive modulation non-selection protocol outperforms the conventional NonAM-MM protocol in which the adaptive modulation is not integrated. Springer Science+Business Media New York, 2012 Relay selection protocol nationallicence Two-way relaying nationallicence Opportunistic relaying nationallicence Amplify-and-forward nationallicence Symbol error probability nationallicence Zhi Hui Jiangsu Key Lab of Wireless Communication, Nanjing University of Posts and Telecommunications, 210003, Nanjing, China aut Yang Longxiang Jiangsu Key Lab of Wireless Communication, Nanjing University of Posts and Telecommunications, 210003, Nanjing, China aut Zhu Hongbo Jiangsu Key Lab of Wireless Communication, Nanjing University of Posts and Telecommunications, 210003, Nanjing, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2805-2825 0929-6212 71:4<2805 2013 71 11277 https://doi.org/10.1007/s11277-012-0972-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0972-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhi Hui Jiangsu Key Lab of Wireless Communication, Nanjing University of Posts and Telecommunications, 210003, Nanjing, China aut NATIONALLICENCE 700 1- Yang Longxiang Jiangsu Key Lab of Wireless Communication, Nanjing University of Posts and Telecommunications, 210003, Nanjing, China aut NATIONALLICENCE 700 1- Zhu Hongbo Jiangsu Key Lab of Wireless Communication, Nanjing University of Posts and Telecommunications, 210003, Nanjing, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2805-2825 0929-6212 71:4<2805 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer