Achievable Rates of Buffer-Aided Full-Duplex Gaussian Relay Channels

Ahmed El Shafie; Ahmed Sultan Salem; Ioannis Krikidis; Naofal Al-Dhahir; Ridha Hamila

doi:10.1109/ACCESS.2017.2764079

Achievable Rates of Buffer-Aided Full-Duplex Gaussian Relay Channels

Ahmed El Shafie, Ahmed Sultan Salem, Ioannis Krikidis, Naofal Al-Dhahir, Ridha Hamila

Computer, Electrical and Mathematical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multipleoutput (MIMO) Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after the application of self-interference mitigation techniques. We investigate both cases of a slow-RSI channel where the RSI is fixed over the entire codeword, and a fast-RSI channel where the RSI changes from one symbol duration to another within the codeword. We show that the RSI can be completely eliminated in the slow-RSI case when the FD relay is equipped with a buffer while the fast RSI cannot be eliminated. For the fixed-rate data transmission scenario, we derive the optimal transmission strategy that should be adopted by the source node and relay node to maximize the system throughput. We verify our analytical findings through simulations.

Original language	English (US)
Pages (from-to)	23776-23791
Number of pages	16
Journal	IEEE Access
Volume	5
DOIs	https://doi.org/10.1109/ACCESS.2017.2764079
State	Published - Oct 18 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The work of N. Al-Dhahir was made possible by NPRP grant number 8-627-2-260 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. The work of I. Krikidis was supported by the Research Promotion Foundation, Cyprus, under the project COM-MED with pr. no. KOINA/ERANETMED/1114/03.

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https://repository.kaust.edu.sa/bitstream/10754/625913/1/08070941.pdf

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title = "Achievable Rates of Buffer-Aided Full-Duplex Gaussian Relay Channels",

abstract = "We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multipleoutput (MIMO) Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after the application of self-interference mitigation techniques. We investigate both cases of a slow-RSI channel where the RSI is fixed over the entire codeword, and a fast-RSI channel where the RSI changes from one symbol duration to another within the codeword. We show that the RSI can be completely eliminated in the slow-RSI case when the FD relay is equipped with a buffer while the fast RSI cannot be eliminated. For the fixed-rate data transmission scenario, we derive the optimal transmission strategy that should be adopted by the source node and relay node to maximize the system throughput. We verify our analytical findings through simulations.",

author = "{El Shafie}, Ahmed and Salem, {Ahmed Sultan} and Ioannis Krikidis and Naofal Al-Dhahir and Ridha Hamila",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The work of N. Al-Dhahir was made possible by NPRP grant number 8-627-2-260 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. The work of I. Krikidis was supported by the Research Promotion Foundation, Cyprus, under the project COM-MED with pr. no. KOINA/ERANETMED/1114/03.",

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doi = "10.1109/ACCESS.2017.2764079",

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AU - Salem, Ahmed Sultan

AU - Krikidis, Ioannis

AU - Al-Dhahir, Naofal

AU - Hamila, Ridha

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The work of N. Al-Dhahir was made possible by NPRP grant number 8-627-2-260 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. The work of I. Krikidis was supported by the Research Promotion Foundation, Cyprus, under the project COM-MED with pr. no. KOINA/ERANETMED/1114/03.

PY - 2017/10/18

Y1 - 2017/10/18

N2 - We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multipleoutput (MIMO) Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after the application of self-interference mitigation techniques. We investigate both cases of a slow-RSI channel where the RSI is fixed over the entire codeword, and a fast-RSI channel where the RSI changes from one symbol duration to another within the codeword. We show that the RSI can be completely eliminated in the slow-RSI case when the FD relay is equipped with a buffer while the fast RSI cannot be eliminated. For the fixed-rate data transmission scenario, we derive the optimal transmission strategy that should be adopted by the source node and relay node to maximize the system throughput. We verify our analytical findings through simulations.

AB - We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multipleoutput (MIMO) Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after the application of self-interference mitigation techniques. We investigate both cases of a slow-RSI channel where the RSI is fixed over the entire codeword, and a fast-RSI channel where the RSI changes from one symbol duration to another within the codeword. We show that the RSI can be completely eliminated in the slow-RSI case when the FD relay is equipped with a buffer while the fast RSI cannot be eliminated. For the fixed-rate data transmission scenario, we derive the optimal transmission strategy that should be adopted by the source node and relay node to maximize the system throughput. We verify our analytical findings through simulations.

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DO - 10.1109/ACCESS.2017.2764079

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SP - 23776

EP - 23791

JO - IEEE Access

JF - IEEE Access

ER -

Achievable Rates of Buffer-Aided Full-Duplex Gaussian Relay Channels

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