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Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

In this paper, we aim at designing sets of binary sequences with good aperiodic/periodic auto- and cross-correlation functions for multiple-input multiple-output (MIMO) radar systems. We show that such a set of sequences can be obtained by minimizing a weighted sum of peak sidelobe level (PSL) and integrated sidelobe level (ISL) with the binary element constraint at the design stage.

Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

In this paper, we bridge the problem of (provably) learning shallow neural networks with the well-studied problem of low-rank matrix estimation. In particular, we consider two-layer networks with quadratic activations, and focus on the under-parameterized regime where the number of neurons in the hidden layer is smaller than the dimension of the input.

Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

In this paper, we address the problem of recovering point sources from two-dimensional low-pass measurements, which is known as the super-resolution problem. This is the fundamental concern of many applications such as electronic imaging, optics, microscopy, and line spectral estimations. We assume that the point sources are located in the square [0,1]2 with unknown locations and complex amplitudes.

Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

We consider the problem of jointly recovering the vector b and the matrix C from noisy measurementsY=A(b)C+W , where A(⋅) is a known affine linear function of b (i.e., A(b)=A0 +∑Qi=1biAi with known matrices Ai ). This problem has applications in matrix completion, robust PCA, dictionary learning, self-calibration, blind deconvolution, joint-channel/symbol estimation, compressive sensing with matrix uncertainty, and many other tasks.

Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

The robust adaptive beamforming design problem based on estimation of the signal-of-interest (SOI) steering vector is considered in the paper. The common criteria to find the best estimate of the steering vector are the beamformer output signal-to-noise-plus-interference ratio (SINR) and output power, while the constraints assume as little as possible prior inaccurate knowledge about the SOI, the propagation media, and the antenna array.

Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

We exploit persymmetric structures to design a generalized likelihood ratio test for detecting subspace signals in homogeneous Gaussian clutter with unknown covariance matrix. The subspace model is employed to account for mismatches in the target steering vector. An exact but finite-sum expression for the probability of false alarm of the proposed detector is derived, which is verified using Monte Carlo simulations.

Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

This paper reformulates adaptive filters (AFs) in the framework of geometric algebra (GA), developing a complete study of the resulting geometric-algebra adaptive filters (GAAFs). They are generated by formulating the underlying minimization problem (a deterministic cost function) from the perspective of GA, a comprehensive mathematical language well suited for the description of geometric transformations.

Section: Publications & Resources

Publication: IEEE Transactions on Signal Processing

A critical task of a radar receiver is data association, which assigns radar target detections to target filter tracks. Motivated by its importance, this paper introduces the problem of jointly designing multiple-input multiple-output (MIMO) radar transmit beam patterns and the corresponding data association schemes.

Section: Events

Lecture Date: October 14, 2019 Chapter: SPS Twin City Chapter Chapter Chair: Tao Zhang Topic: Array processing and beamforming with Kronecker products

The Signal Processing research group at the Universität Hamburg (http://uhh.de/inf-sp) is hiring a PhD student or a postdoctoral researcher for 33 months for the project "Crossmodal Processing of Audio-Visual Signals". Please find further information here: https://www.inf.uni-hamburg.de/en/inst/ab/sp/job-offer.html