TAS Strategies for Incremental Cognitive MIMO Relaying: New Results and Accurate Comparison

El-Moutaouakkil, Zakaria; Tourki, Kamel; Yanıkömeroğlu, Halim; Saoudi, Samir

doi:10.1109/access.2018.2829930

Cited by 5 publications

(1 citation statement)

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“…Under a statistical interference constraint, the secondary system simply acquires the secondorder statistic of its CCI on the primary system to adapt its transmit power, therefore the proposed TAS in this case has to only deal with CCI from the primary system. Very recently, we have proposed an optimal TAS for cognitive MIMO MRC systems where a statistical interference constraint is imposed on the secondary system [10]. Capitalizing on this work, we herein underline the following contributions:…”

Section: Introductionmentioning

confidence: 98%

Optimal TAS for Cross-Interference Mitigation in Cognitive MIMO MRC Systems

El-Moutaouakkil

Tourki

Saoudi

et al. 2019

2019 15th International Wireless Communications &Amp; Mobile Computing Conference (IWCMC)

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In a cost-effective implementation, we address the problem of cross-interference in cognitive multiple-input multiple-output (MIMO) spectrum sharing where mutual cochannel interference (CCI) between the primary and secondary systems is of major concern. First, we propose an optimal transmit-antenna selection (TAS) strategy that instead maximizes the received signal-to-interference-plus-noise ratio (SINR) after maximum-ratio combining (MRC). We statistically analyze the combined SINR structure and derive new expressions of its cumulative and probability distribution functions. Interestingly, we accurately show the substantial gains offered by the proposed TAS strategy in terms of the secondary system outage performance compared to the existent state-of-the-art TAS strategies. Finally, our analytical results are validated by simulations and some important insights are also underlined.

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Section: Introductionmentioning

confidence: 98%