Outage Analysis of Co-Operative Two-Path Relay Channels
- 13 January 2016
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 15 (5), 3157-3169
- https://doi.org/10.1109/twc.2016.2517623
Abstract
In this paper, we consider a two-path relay channel (TPRC) with the assistance of two decode-and-forward relays alternatively. Upon successfully decoding a source packet, a relay proceeds to forward the decoded packet to the destination, which brings an interference to the other relay. Owing to this inter-relay interference, the decoding result at one relay in the current time slot depends on the decoding result at the other relay in the previous time slot. Exploiting this single-slot memory, the decoding performance of the relays is analyzed using a Markov chain. Furthermore, since the relay transmission is one slot behind the source transmission, the neighboring source packets received at the destination interfere with one another. Then depending on whether a packet is subject to the residual interference from its previous packet, the decoding performance of the destination can be similarly analyzed using a Markov chain. Thus we can obtain the overall outage probability of TPRC in closed-form expressions. Simulation results are provided to demonstrate the performance of the considered TPRC, where the effects of various parameters are evaluated. By comparisons with existing works, a reasonably good performance is achieved for TPRC with only a single-slot delay.Keywords
Funding Information
- Ministry of Science and Technology (MOST) of China (2015FDG12580, 2014DFA11640)
- National Natural Science Foundation of China (61301128, 61461136004)
- NFSC Major International Joint Research Project (61210002)
- Fundamental Research Funds for the Central Universities (2015XJGH011)
- EU FP7-PEOPLE-IRSES
- S2EuNet (247083)
- WiNDOW (318992)
- CROWN (610524)
- National International Scientific and Technological Cooperation Base of Green Communications and Networks (2015B01008)
- Hubei International Scientific and Technological Cooperation Base of Green Broadband Wireless Communications
- IEEE International Conference on Communications
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