Abstract
In this chapter, we turn our attention to the capacity and optimal power allocation scheme for a static full-duplex dual-hop amplify-and-forward system under residual self-interference and without direct link. By modeling the variance of the residual self-interference as proportional to the λ-th power of the transmitted power, we first derive the optimal allocations under per-node and sum power constraints. The capacity and optimal schemes are then analyzed in different high power regions. Specifically, we show that full power at the relay is not necessarily optimal and that the optimal multiplexing gain is \(1/[1+\lambda ]\). The conditions under which full-duplex outperforms half-duplex are finally discussed.
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Rodríguez, L.J., Tran, N., Le-Ngoc, T. (2015). Full-Duplex AF Relaying: Capacity Under Residual Self-Interference. In: Amplify-and-Forward Relaying in Wireless Communications. SpringerBriefs in Computer Science. Springer, Cham. https://doi.org/10.1007/978-3-319-17981-0_7
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DOI: https://doi.org/10.1007/978-3-319-17981-0_7
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