A Comprehensive Self-Interference Model for Single-Antenna Full-Duplex Communication Systems
Atiqul Islam,Besma Smida +1 more
- pp 1-7
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TLDR
In this article, the authors proposed a comprehensive SI model for single-antenna full-duplex systems based on direct-conversion transceiver structure considering nonlinearities of all the transceiver radio frequency (RF) components, in-phase and frequency-quadrature (IQ) imbalances, phase noise effect, and receiver noise figure.Abstract:
Single-antenna full-duplex communication technology has the potential to substantially increase spectral efficiency. However, limited propagation domain cancellation of single-antenna system results in a higher impact of receiver chain nonlinearities on the residual self-interference (SI) signal. In this paper, we offer a comprehensive SI model for single-antenna full-duplex systems based on direct-conversion transceiver structure considering nonlinearities of all the transceiver radio frequency (RF) components, in-phase/quadrature (IQ) imbalances, phase noise effect, and receiver noise figure. To validate our model, we also propose a more appropriate digital SI cancellation approach considering receiver chain RF and baseband nonlinearities. The proposed technique employs orthogonalization of the design matrix using QR decomposition to alleviate the estimation and cancellation error. Finally, through circuit-level waveform simulation, the performance of the digital cancellation strategy is investigated, which achieves 20 dB more cancellation compared to existing methods.read more
Citations
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Journal ArticleDOI
Iterative Nonlinear Self-Interference Cancellation for In-Band Full-Duplex Wireless Communications Under Mixer Imbalance and Amplifier Nonlinearity
TL;DR: Simulation results show that the proposed technique can achieve higher cancellation performance compared with the Hammerstein canceller when the LNA is saturated by the self-interference and the performance of the proposed canceller converges much faster than that of the Hammerenstein canceller.
Journal ArticleDOI
X -Band Quasi-Elliptic Non-Reciprocal Bandpass Filters (NBPFs)
Andrea Ashley,Dimitra Psychogiou +1 more
TL;DR: In this article, the authors report on the design and practical development of RF co-designed MMIC components that exhibit the function of a bandpass filter and an RF isolator, based on cascaded non-reciprocal frequency-selective stages (NFSs), one-pole/two-transmission zero (TZ) multi-resonant stages, and impedance inverters.
Proceedings ArticleDOI
A Unified Beamforming and A/D Self-Interference Cancellation Design for Full Duplex MIMO Radios
TL;DR: In this paper, a joint design of digital transmit and receive beamforming with analog and digital (A/D) selfinterference cancellation is proposed to suppress the residual linear and nonlinear self-interference signal below the noise floor.
Journal ArticleDOI
Theoretical Analysis of In-Band Full-Duplex Radios With Parallel Hammerstein Self-Interference Cancellers
TL;DR: This work develops a theoretical analysis technique for IBFD systems using parallel Hammerstein self-interference cancellers and shows that the SER of the IBFD system is reduced by moderately nonlinearizing rather than linearizing the amplifier.
Journal ArticleDOI
On Blind Channel Estimation in Full-Duplex Wireless Relay Systems
TL;DR: The spectral efficiency of the FD relay system employing blind and pilot-based channel estimation methods are compared, indicating that at high SNR, the blind approach provides around 2-bps/Hz spectral efficiency gain relative to a typical pilot- based method.
References
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