GFDM-Modulated Full-Duplex Cognitive Radio Networks in the Presence of RF Impairments
作者： Amirhossein Mohammadian , Chintha Tellambura
DOI: 10.1109/PIMRC.2019.8904423
关键词:
摘要: This paper investigates the problem of sum rate maximization for a full-duplex (FD) generalized frequency division multiplexing (GFDM) based secondary user (SU) link, operating in spectrum hole. The right and left adjacent channels hole have two active primary users (PUs), thus channel interference (ACI) on them must be below threshold. For SU radio (RF) impairments including phase noise, in-phase (I) quadrature (Q) imbalance, carrier offset (CFO) are considered analog domain digital self-interference (SI) cancellation techniques applied. We consider cases: (1) independent oscillators local transmitter receiver, (2) single shared oscillator between them. derive powers residual SI, desired signal noise signal-to-interference-plus ratio (SINR). Furthermore, power spectral density (PSD) FD is calculated ACI formulated. By using successive convex approximation, subject to limits PUs defined solved. Finally, we show that GFDM link can achieve twice higher than orthogonal (OFDM).
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