Open AccessOptimal diversity multiplexing tradeoff for opportunistic relaying coded cooperation protocols with quantised channel state information feedback
Author(s) -
Haghighi Ali Asghar
Publication year - 2014
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2012.0629
Subject(s) - relay , computer science , node (physics) , channel state information , multiplexing , computer network , channel (broadcasting) , cooperative diversity , protocol (science) , topology (electrical circuits) , fading , telecommunications , wireless , mathematics , engineering , physics , medicine , power (physics) , alternative medicine , structural engineering , pathology , quantum mechanics , combinatorics
A cooperative multiple relay system is considered in this study which exploit opportunistic relaying (OR)‐based protocol with coded cooperation approach. For the considered system, the optimal diversity multiplexing tradeoff (DMT) is determined in different scenarios including either considering the source node as a potential relay or not. The study is then extended to the case where the quantised channel state information (QCSI) feedback is considered. In particular, an OR‐based protocol with QCSI at the source node is presented. It is shown that the QCSI feedback linearly improves the DMT performance. In addition, it is proved that the role of QCSI feedback to improve DMT performance is higher than that of cooperative relays.