Delay constrained buffer-aided relaying with outdated CSI
Islam T, Michalopoulos DS, Schober R, Bhargava VK (2014)
Publication Language: English
Publication Type: Conference contribution
Publication year: 2014
Event location: Istanbul
ISBN: 978-1-4799-3083-8
DOI: 10.1109/WCNC.2014.6952203
Abstract
Recent studies have shown that buffer-aided relaying with adaptive link selection can provide significant performance gains compared to conventional relaying using a fixed transmission schedule. In this paper, we focus on error rate analysis of adaptive link selection for a three node decode-and-forward (DF) relay network with fixed-rate transmission. As in practice link selection may be performed based on outdated channel state information (CSI) because of a delay in the feedback link, we study the error rate performance for both perfect and outdated CSI. Since a packet transmission delay is unavoidable with opportunistic link selection, we provide a unified error-rate analysis in terms of a decision threshold β which can be adjusted to achieve buffer stability and a desired average system delay. We show that a diversity gain of two can be achieved for perfect CSI and the optimum BER can be approached even if only a small delay is tolerated.
Authors with CRIS profile
Involved external institutions
Canada (CA)How to cite
APA:
Islam, T., Michalopoulos, D.S., Schober, R., & Bhargava, V.K. (2014). Delay constrained buffer-aided relaying with outdated CSI. In IEEE (Eds.), Proceedings of the 2014 IEEE Wireless Communications and Networking Conference (WCNC). Istanbul, TR.
MLA:
Islam, Toufiqul, et al. "Delay constrained buffer-aided relaying with outdated CSI." Proceedings of the 2014 IEEE Wireless Communications and Networking Conference (WCNC), Istanbul Ed. IEEE, 2014.
BibTeX: Download