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A Simple $N^{th}$ Best-Relay Selection Criterion for Opportunistic Two-Way Relay Networks under Outdated Channel State Information
Ist Teil von
KSII transactions on Internet and information systems, 2014, Vol.8 (10), p.3409-3422
Erscheinungsjahr
2014
Link zum Volltext
Quelle
EZB Free E-Journals
Beschreibungen/Notizen
The frequency spectrum available for the wireless communication is extremely crowded. In order to improve the spectral efficiency, the two-way relay networks have aroused great attention. A simple $N^{th}$ best-relay selection criterion for the opportunistic two-way relay networks is proposed, which can be implemented easily by extending the distributed timer technique in practice, since the proposed criterion is mainly based on the channel gains. The outage performance of the proposed relay selection scheme is analyzed under the outdated channel state information (CSI), and a tight closed-form lower bound and asymptotic value of the outage probability over Rayleigh fading channels are obtained. Simulation results demonstrate that the tight closed-form lower bound of the outage probability very closely matches with simulated ones in the whole SNR region, and the asymptotic results provide good tight approximations to the simulation ones, especially in the high SNR region.
Sprache
Koreanisch
Identifikatoren
eISSN: 1976-7277
Titel-ID: cdi_kisti_ndsl_JAKO201433150865237
Format
–
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