NDLI: Multi-Relay Cooperative Retransmission Strategies over Time-Correlated Channels

Content Provider	IEEE Xplore Digital Library
Author	Meiyu Huang Fei Yang Haibao Ren Sihai Zhang Wuyang Zhou
Copyright Year	2013
Description	Author affiliation: Wireless Inf. Network Lab., Univ. of Sci. & Technol. of China, Hefei, China (Meiyu Huang; Fei Yang; Haibao Ren; Sihai Zhang; Wuyang Zhou)
Abstract	Time-varying property of practical wireless channels affects the performance of cooperative protocol in multi-relay networks. In this paper, we evaluate and compare four decode-and-forward (DF) retransmission strategies over time-correlated Rayleigh channels, which are the combinations of two relay selection (RS) schemes and two repeater switching patterns: RS can be based on either statistical or outdated channel state information (CSI); in the static switching pattern all forwardings are executed by the same relay that is selected at the beginning, while in the dynamic pattern relays that have not recovered the source message keep receiving from the forwarding relay to extend the decoding subset, from which the activated relay for next retransmission is reselected. Numerical simulations validate that statistical information is more beneficial than outdated CSI over weakly correlated channels. On the other hand, the dynamic switching pattern generally outperforms the static one especially with relatively large maximum transmission number, at the cost of higher complexity of decoding and signalling.
Starting Page	1
Ending Page	5
File Size	263153
Page Count	5
File Format	PDF
ISBN	9781467361873
ISSN	10903038
DOI	10.1109/VTCFall.2013.6692297
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-02
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Decoding Switches Correlation Probability Diversity reception Fading
Content Type	Text
Resource Type	Article

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