• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Harmonic-Mean-Based Dual-Antenna Selection with Distributed Concatenated Alamouti Codes in Two-Way Relaying Networks


Abstract

In this letter, a harmonic-mean-based dual-antenna selection scheme at relay node is proposed in two-way relaying networks (TWRNs). With well-designed distributed orthogonal concatenated Alamouti space-time block code (STBC), a dual-antenna selection problem based on the instantaneous achievable sum-rate criterion is formulated. We propose a low-complexity selection algorithm based on the harmonic-mean criterion with linearly complexity ()RON rather than the directly exhaustive search with complexity()2RON. From the analysis of network outage performance, we show that the asymptotic diversity gain function of the proposed scheme achieves as 11RNρ−, which demonstrates one degree loss of diversity order compared with the full diversity. This slight performance gap is mainly caused by sacrificing some dual-antenna selection freedom to reduce the algorithm complexity. In addition, our proposed scheme can obtain an extra coding gain because of the combination of the well-designed orthogonal concatenated Alamouti STBC and the corresponding dual-antenna selection algorithm. Compared with the common-used selection algorithms in the state of the art, the proposed scheme can achieve the best performance, which is validated by numerical simulations.


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Cite this article

[IEEE Style]
G. Li, F. Gong and X. Chen, "Harmonic-Mean-Based Dual-Antenna Selection with Distributed Concatenated Alamouti Codes in Two-Way Relaying Networks," KSII Transactions on Internet and Information Systems, vol. 13, no. 4, pp. 1961-1974, 2019. DOI: 10.3837/tiis.2019.04.012.

[ACM Style]
Guo Li, Feng-Kui Gong, and Xiang Chen. 2019. Harmonic-Mean-Based Dual-Antenna Selection with Distributed Concatenated Alamouti Codes in Two-Way Relaying Networks. KSII Transactions on Internet and Information Systems, 13, 4, (2019), 1961-1974. DOI: 10.3837/tiis.2019.04.012.