Outage-Optimal Allocation of Relay Power for Analog Network Coding with Three Transmission Phases

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We consider a two-way relaying (TWR) system, where two user nodes communicate each other via a relay node adopting a three transmission phase (3P) analog network coding (ANC). In the 3P ANC, the relay node broadcasts a linear combination of the signals received from the two users in different phases. For the proposed scheme, we derive the outage optimal relay power allocation (RPA). When a direct link (DL) is available, we also propose a suboptimal RPA to avoid the requirement of feedback of the DL quality. Simulation results show that the 3P ANC with the suboptimal PRA, at a negligible loss compared to that with the optimal RPA, outperforms the other conventional schemes when a DL is available.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2012-06
Language
English
Article Type
Article
Keywords

CHANNELS; PROTOCOLS

Citation

IEEE COMMUNICATIONS LETTERS, v.16, no.6, pp.838 - 841

ISSN
1089-7798
DOI
10.1109/LCOMM.2012.041112.120094
URI
http://hdl.handle.net/10203/101863
Appears in Collection
EE-Journal Papers(저널논문)
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