Abstract
For fifth generation (5G) communications, full-duplex radio is one of the key technologies to increase the spectral efficiency. To apply full duplex to commercial wireless communication systems, it is crucial to adopt effective self- interference cancellation (SIC) techniques, which are compatible with the standards. In this paper, we focus on applying full duplex to the current long term evolution (LTE) standard. We introduce three LTE-compatible SIC methods and these are investigated in terms of reference signal, SIC performance, and stability. Numerical results confirm that, in certain conditions, full duplex can be applied and improve LTE systems especially in small-cell environments.
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