47 citations · 150 across the 16 of their papers we have counts for
18 papers
One-Bit Target Detection in Collocated MIMO Radar and Performance Degradation Analysis
Yu-Hang Xiao, David Ramírez, Peter J. Schreier +2
Target detection is an important problem in multiple-input multiple-output (MIMO) radar. Many existing target detection algorithms were proposed without taking into consideration t…
Improper Gaussian Signaling for the -user MIMO Interference Channels with Hardware Impairments
Mohammad Soleymani, Ignacio Santamaria, Peter J. Schreier
This paper investigates the performance of improper Gaussian signaling (IGS) for the -user multiple-input, multiple-output (MIMO) interference channel (IC) with hardware impairm…
Procrustes registration of two-dimensional statistical shape models without correspondences
Alma Eguizabal, Peter J. Schreier, Jürgen Schmidt
Statistical shape models are a useful tool in image processing and computer vision. A Procrustres registration of the contours of the same shape is typically perform to align the t…
Two-Channel Passive Detection Exploiting Cyclostationarity
Stefanie Horstmann, David Ramírez, Peter J. Schreier
This paper addresses a two-channel passive detection problem exploiting cyclostationarity. Given a reference channel (RC) and a surveillance channel (SC), the goal is to detect a t…
Determining the Dimension and Structure of the Subspace Correlated Across Multiple Data Sets
Tanuj Hasija, Christian Lameiro, Timothy Marrinan +1
Detecting the components common or correlated across multiple data sets is challenging due to a large number of possible correlation structures among the components. Even more chal…
Improper Signaling for SISO Two-user Interference Channels with Additive Asymmetric Hardware Distortion
Mohammad Soleymani, Christian Lameiro, Ignacio Santamaria +1
Hardware non-idealities are among the main performance restrictions for upcoming wireless communication systems. Asymmetric hardware distortions (HWD) happen when the impairments o…
Robust Improper Signaling for Two-user SISO Interference Channels
Mohammad Soleymani, Christian Lameiro, Ignacio Santamaria +1
It has been shown that improper Gaussian signaling (IGS) can improve the performance of wireless interference-limited systems when perfect channel state information (CSI) is availa…
Deep Morphing: Detecting bone structures in fluoroscopic X-ray images with prior knowledge
Aaron Pries, Peter J. Schreier, Artur Lamm +2
We propose approaches based on deep learning to localize objects in images when only a small training dataset is available and the images have low quality. That applies to many pro…
Model-order selection in statistical shape models
Alma Eguizabal, Peter J. Schreier, David Ramírez
Statistical shape models enhance machine learning algorithms providing prior information about deformation. A Point Distribution Model (PDM) is a popular landmark-based statistical…
LMPIT-inspired Tests for Detecting a Cyclostationary Signal in Noise with Spatio-Temporal Structure
Aaron Pries, David Ramírez, Peter J. Schreier
In spectrum sensing for cognitive radio, the presence of a primary user can be detected by making use of the cyclostationarity property of digital communication signals. For the ge…
Improper Gaussian signaling for multiple-access channels in underlay cognitive radio
Christian Lameiro, Ignacio Santamaria, Peter J. Schreier
This paper considers an unlicensed multiple-access channel (MAC) that coexists with a licensed point-to-point user, following the underlay cognitive radio paradigm. We assume that…
A weighting strategy for Active Shape Models
Alma Eguizabal, Peter J. Schreier
Active Shape Models (ASM) are an iterative segmentation technique to find a landmark-based contour of an object. In each iteration, a least-squares fit of a plausible shape to some…
Determining the Dimension of the Improper Signal Subspace in Complex-Valued Data
Tanuj Hasija, Christian Lameiro, Peter J. Schreier
A complex-valued signal is improper if it is correlated with its complex conjugate. The dimension of the improper signal subspace, i.e., the number of improper components in a comp…
Rate region boundary of the SISO Z-interference channel with improper signaling
Christian Lameiro, Ignacio Santamaria, Peter J. Schreier
This paper provides a complete characterization of the boundary of an achievable rate region, called the Pareto boundary, of the single-antenna Z interference channel (Z-IC), when…
Canonical correlation analysis of high-dimensional data with very small sample support
Yang Song, Peter J. Schreier, David Ramirez +1
This paper is concerned with the analysis of correlation between two high-dimensional data sets when there are only few correlated signal components but the number of samples is ve…
Benefits of improper signaling for underlay cognitive radio
Christian Lameiro, Ignacio Santamaría, Peter J. Schreier
In this letter we study the potential benefits of improper signaling for a secondary user (SU) in underlay cognitive radio networks. We consider a basic yet illustrative scenario i…
Detecting Directionality in Random Fields Using the Monogenic Signal
Sofia Olhede, David Ramírez, Peter J. Schreier
Detecting and analyzing directional structures in images is important in many applications since one-dimensional patterns often correspond to important features such as object cont…
On the instantaneous frequency of Gaussian stochastic processes
Patrik Wahlberg, Peter J. Schreier
This paper concerns the instantaneous frequency (IF) of continuous-time, zero-mean, complex-valued, proper, mean-square differentiable nonstationary Gaussian stochastic processes.…