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

We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multiple-output Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after the application of self-interference mitigation techniques. We investigate both...

Full description

Bibliographic Details
Published in:IEEE Access
Main Authors: Ahmed El Shafie, Ahmed Sultan, Ioannis Krikidis, Naofal Al-Dhahir, Ridha Hamila
Format: Article
Language:English
Published: IEEE 2017-01-01
Subjects:
Buffer
full-duplex
relay
MIMO
achievable rate
precoding
Online Access:https://ieeexplore.ieee.org/document/8070941/
Description
Summary:We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multiple-output 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.
ISSN:2169-3536

Similar Items