11 accepted papers
In this paper, we investigate the problem of transmit beamforming design for massive multiple-input multiple-output integrated sensing and communications (MIMO-ISAC) systems, through sensing energy maximization. Most of existing methods for transmit beamforming design suffer from high computational…
The problem of joint direction-of-arrival estimation and distorted sensor detection has received a lot of attention in recent decades. Most state-of-the-art work formulated such a problem via low-rank and row-sparse decomposition, where the low-rank and row-sparse components were treated in an isola…
This paper investigates the problem of robust beamforming design for dual-function radar-communication (DFRC) systems in complex environments where there exist multiple targets, signal-dependent interferences, imperfect knowledge of the interferences and communication channel state information (CSI)…
In this paper, we present a new synthetic aperture method for direction-of-arrival (DOA) estimation using a passive towed sonar array that is deformed during platform maneuver. With certain prior knowledge of source-array geometry, we propose to find the optimal maximum likelihood estimates of DOAs…
This paper considers hybrid beamforming in multiple-input multiple-output integrated sensing and communications systems. In particular, the transmit hybrid beamformers are jointly designed with digital receive beamformers of users by maximizing the ratio of minimum mainlobe level to peak sidelobe le…
This paper considers the hybrid beamforming design for wideband OFDM-DFRC system serving multiple users (MUs). The analog beamformer for the whole bandwidth and the digital beamformers for each subcarrier and are jointly optimized by considering flexible performance trade-off between the radar and c…
This paper focuses on the problem of coexistence between a colocated multiple-in multiple-out (MIMO) radar and down-link communication systems. We propose an iterative algorithm to minimize the Cramer-Rao Bound (CRB) on the direction of arrival (DOA) of a target, accounting for the energy and simila…
The problem of transmit beampattern synthesis in multiple input multiple output (MIMO) radar for target localization is investigated in this paper. By appropriately designing the cross correlation matrix of the transmitted signal waveforms, we can focus the transmit energy into the sector(s) of inte…
A modified nested linear array (MNLA) has been reported recently for a greater potential in increasing the degree-of-freedom. However, there exist some "holes" in the difference co-array, which results in missing "lags" and limited performance of direction-of-arrival (DOA) estimation. In order to ta…
In this paper, we investigate the problem of transmit beam-pattern design for MIMO radar with one-bit DACs. Based on the Fast Fourier Transform (FFT), we propose an alternating minimization (AM) method to minimize the weighted squared-error (WSE) between the designed beampattern and a given one. In…
When considering the problem of direction-of-arrival (DOA) estimation, uniform noise is often assumed and hence, the corresponding noise covariance matrix is diagonal and has identical diagonal entries. However, this does not always hold true since the noise is nonuniform in certain applications and…