Abstract
This paper analyzes the outage performance of cooperative protocols for the two-way relaying model in which a half-duplex relay assists in the bi-directional communication of two terminals. We first define the outage events and derive closed form results for the outage probabilities of conventional nonadaptive Amplify-and-Forward (AF) and Decode-and-Forward (DF) two-way relaying protocols.We then consider a simple adaptive protocol in the two-way relaying scenario, which switches between AF and DF depending on the decodability of the two bi-directional data streams at the relay. We also derive the outage probability for this adaptive scheme in closed form expressions, and our results show that it always outperforms the non-adaptive schemes. All the closed form results derived in this paper are applicable to arbitrary channel gains between terminals.
Original language | English |
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Article number | 5090009 |
Pages (from-to) | 3288-3299 |
Number of pages | 12 |
Journal | IEEE Transactions on Wireless Communications |
Volume | 8 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2009 |
Externally published | Yes |
Keywords
- Amplify-and-forward
- Bi-directiona l
- Decode-and-forward
- Half-duplex
- Outageprobability
- Two-wayrelaying