Analysis of Packet Diversity in Buffer-Aided Relaying over Symmetric and Asymmetric Rayleigh Fading Channels
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Department of Computer Science and Software Engineering, International Islamic University, Islamabad 44000, Pakistan
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Department of Computer Science, COMSATS University Islamabad, Islamabad 44000, Pakistan
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Department of Technology, University of Lahore, Lahore 54000, Pakistan
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Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 38541, Korea
*
Authors to whom correspondence should be addressed.
Symmetry 2020, 12(2), 241; https://doi.org/10.3390/sym12020241
Received: 4 December 2019
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Revised: 20 January 2020
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Accepted: 31 January 2020
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Published: 5 February 2020
In this paper, we propose innovative schemes for relay selection that jointly explore packet selection and relay selection for buffer-aided amplify and forward (AF) cooperative relaying networks. The first proposed scheme chooses the most suitable channel based on link quality from all active channels, i.e., channels with neither empty nor full corresponding buffers. In the second proposed scheme, the most suitable channel is chosen based on buffer status. When the source-relay channel is determined, the corresponding relay collects data in the buffer. Likewise, when the relay-destination channel is picked, the most suitable packet is dispatched from the buffer. The most suitable packet is one that provides the highest end-to-end equivalent signal-to-noise ratio. We simulated the outage probability, average throughput and packet delay and analyzed the proposed protocol for both symmetric and asymmetric channel conditions. Comparison is made against the existing buffer-aided schemes. The results show that the proposed relay and packet selection systems help to reduce the outage probability, diversity gain and delay.
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Keywords:
relay selection; packet selection; buffer-aided; amplify and forward
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MDPI and ACS Style
Nasir, H.; Javaid, N.; Raza, W.; Shafiq, M. Analysis of Packet Diversity in Buffer-Aided Relaying over Symmetric and Asymmetric Rayleigh Fading Channels. Symmetry 2020, 12, 241. https://doi.org/10.3390/sym12020241
AMA Style
Nasir H, Javaid N, Raza W, Shafiq M. Analysis of Packet Diversity in Buffer-Aided Relaying over Symmetric and Asymmetric Rayleigh Fading Channels. Symmetry. 2020; 12(2):241. https://doi.org/10.3390/sym12020241
Chicago/Turabian StyleNasir, Hina, Nadeem Javaid, Waseem Raza, and Muhammad Shafiq. 2020. "Analysis of Packet Diversity in Buffer-Aided Relaying over Symmetric and Asymmetric Rayleigh Fading Channels" Symmetry 12, no. 2: 241. https://doi.org/10.3390/sym12020241
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