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In this letter, a jamming resilient communication technique for unmanned aircraft vehicle (UAV) is proposed. Multiple-input multiple-output (MIMO) interference cancellation is exploited to combat reactive jamming. An improved channel estimation algorithm based on Kalman filter and basis expansion model (BEM) is used to track the quick changes of the combined channel components. Simulation results...
The RF subsampling receiver suffers from nonlinear distortion caused by the front end of the receiver, specifically the low noise amplifier. Strong interferers present in the receiver introduce cross modulation distortion to the desired signal. This paper introduces a compensation method for the cross modulation distortion using digital signal processing techniques. In the proposed method, two signals...
In this paper, a robust joint carrier frequency offset (CFO) and fast time-varying channel tracking algorithm for MIMO-OFDM systems is proposed. The proposed method is robust to noise statistics and noise distribution uncertainties. The extended H∞ filter (EHF) is employed for the joint tracking process as it does not require any knowledge of noise statistics or noise distribution, unlike the conventional...
Joint channel and frequency offset tracking based on an autoregressive (AR) model are often performed by either assuming the knowledge of the state transition matrix and state noise or obtaining the state transition matrix and state noise via the Yule Walker equations. In this paper, we propose a joint carrier frequency offset (CFO) and channel parameters tracking algorithm for MIMO-OFDM system which...
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