Abstract
When a source has insufficient information about relay-to-destination (R-D) link, like type-2 user equipment (UE) relaying, using average channel gain severely degrades the end-to-end error performance. In this paper, we propose a threshold based relay selection with limited feedback, which has more specific information about R-D link. For a simple case, we consider two adaptive thresholds, where the R-D channel gain is quantized to three levels. Candidate relays whose signal strength exceeds a threshold are divided into two groups according to the threshold, and a source selects the best relay considering the modified harmonic mean of channel gains. We suggest the method of finding optimal thresholds and present the symbol-error rate (SER) performance of M-ary PSK signaling. Simulation results show that relay selection with limited feedback can improve the SER performance, especially in asymmetric link conditions.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Foschini Jr., G.J., Gans, M.J.: On limits of wireless communication in a fading environment when using multiple antennas. In: Wireless Personal Commun., pp. 36–54 (1998)
Laneman, J.N., Tse, D.N.C.: Cooperative diversity in wireless networks: efficient protocols and outage behavior. IEEE Trans. Inform. Theory. 50, 3062–3080 (2004)
Su, W., Sadek, A.K., Liu, K.J.R.: SER performance analysis and optimum power allocation for decode-and-forward cooperation protocol in wireless networks. In: Proc. IEEE Wireless Communications and Networking Conference, vol. 2, pp. 984–989 (2005)
Kramer, G., Gastpar, M., Gupta, P.: Cooperative strategies and capacity theorems for relay networks. IEEE Trans. Inf. Theory 51(9) (2005)
Fareed, M.M., Uysal, M.: On relay selection for decode-and-forward relaying. IEEE Trans. Wireless Commun. 8(7) (2009)
Ibrahim, A.S., Sadek, A.K., Su, W.: Cooperative communications with relay-selection: when to cooperate and whom to cooperate with? IEEE Trans. Wireless Commun. 7(7) (2008)
Park, S.C., Kim, D.I.: Adaptive threshold based relay selection for minimum feedback. In: Proc. CHINACOM 2010, Beijing, China, pp. 1–5 (2010)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Oh, K., Kim, D.I. (2011). Relay Selection with Limited Feedback for Multiple UE Relays. In: Murgante, B., Gervasi, O., Iglesias, A., Taniar, D., Apduhan, B.O. (eds) Computational Science and Its Applications - ICCSA 2011. ICCSA 2011. Lecture Notes in Computer Science, vol 6786. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21934-4_14
Download citation
DOI: https://doi.org/10.1007/978-3-642-21934-4_14
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-21933-7
Online ISBN: 978-3-642-21934-4
eBook Packages: Computer ScienceComputer Science (R0)