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—This paper addresses the analysis and mitigation of the signal distortion caused by oscillator phase noise (PN) in OFDM communications systems. Two new PN mitigation techniques are proposed, especially targeted for reducing the intercarrier interference (ICI) effects due to PN. The first proposed method is a fairly simple one, stemming from the idea of(More)
—This article addresses the modeling and cancellation of self-interference (SI) in full-duplex (FD) direct-conversion radio transceivers, operating under practical imperfect radio frequency (RF) components. Firstly, detailed SI signal modeling is carried out, taking into account the most important RF imperfections, namely transmit power amplifier (PA)(More)
—Despite the intensive recent research on wireless single-channel full-duplex communications, relatively little is known about the transceiver chain nonidealities of full-duplex devices. However, they turn out to be among main practical reasons for observing residual self-interference even after high physical antenna isolation and efficient analog or(More)
—Recently, full-duplex (FD) communications with simultaneous transmission and reception on the same channel has been proposed. The FD receiver, however, suffers from inevitable self-interference (SI) from the much more powerful transmit signal. Analogue radio-frequency (RF) and baseband, as well as digital baseband, cancellation techniques have been(More)
—This paper addresses the analysis of oscillator phase-noise effects on the self-interference cancellation capability of full-duplex direct-conversion radio transceivers. Closed-form solutions are derived for the power of the residual self-interference stemming from phase noise in two alternative cases of having either independent oscillators or the same(More)
paper presents a new way to address and mitigate sampling jitter in high-frequency bandpass-sampling OFDM radio receivers. Baseband model for mapping the sampling jitter to certain type of phase noise is first presented, and stemming from this model, state-of-the-art phase noise mitigation techniques are then proposed to remove the jitter-induced signal(More)
This article addresses the signal distortion caused by receiver phase noise (PN) on OFDM waveforms in direct-conversion radio receivers. A closed-form solution for the observed signal-to-interference-plus-noise ratio (SINR) is derived, describing the level of intercarrier interference (ICI) stemming from PN. Compared to existing literature, the analysis is(More)
In this paper, an advanced direct RF sampling receiver architecture is studied for the GNSS environment. The architecture is based on sampling the signal directly at RF, which in the GNSS case are in the 1.5 GHz range. The high-frequencies in the signals to be sampled pose then very high demands for the accuracy and quality of the sampling process, and thus(More)
In this paper, the problem of sampling-jitter estimation in OFDM full-duplex radio transceivers is addressed. The sampling-jitter estimation is very challenging, because the effects are very small, but still high enough to be a problem in full-duplex radios. The proposed sampling-jitter estimation method is based on estimating only the most significant(More)