Author
Khayatian, H., Parvaresh, F., Abouei, J., Saberali, S. M., Uysal, Murat
Publication Date
2021-06
Publication Place
-
Elsevier
Subject
Diversity-multiplexing trade-off, Half-duplex, Parallel relay networks, Quantize-map-and-forward
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1874-4907
Record ID
f0c2c61e-75c8-4935-90f7-40b06b97e3ff
Library Location
Electrical & Electronics Engineering
Date
2021-06
Notes
Ministry of Science Research and Technology
Sample Text
Two-hop parallel networks with half-duplex relays over quasi-static Rayleigh fading channels are considered. Assuming relays have only local channel state information, optimal communication schemes for these networks in terms of the diversity multiplexing trade-off (DMT) are obtained. It is shown that the dynamic quantize-map-and-forward (DQMF) and the static quantize-map-and-forward (SQMF) communication strategies achieve the optimal DMT at different ranges of the multiplexing gain. In the DQMF scheme, a relay sets its transmitting/listening times according to the instantaneous source-relay channel condition. However, in the SQMF scheme, a relay sets its transmitting/listening times to be a constant independent of the instantaneous source-relay channel gain. Essentially, we calculate the DMT of the network under the general setting for arbitrary average signal-to-noise ratios over links and it is shown that the DMT of the proposed schemes matches the upper bounds. Moreover, the optimal transmitting/listening times of the half-duplex relays as functions of the instantaneous channel realizations are derived for different communication strategies in the general setting. Finally, various simulation scenarios are considered and the DMT of the proposed schemes and the dynamic decode and forward communication strategy are compared.
DOI
10.1016/j.phycom.2021.101291
Cilt
46
