9 papers
Single-Base-Station Indoor Localization via Super-Resolved Relative Power Delay Profiles
Fangqing Xiao, Dirk T. M. Slock
Indoor multipath is shaped by surrounding reflectors, scatterers, and blockages, so a relative power-delay profile (PDP) can serve as a location fingerprint without an identifiable…
Gaussian-Process Dynamics of Diagonal Expectation Propagation under Variance-Profile Gaussian Measurements
Fangqing Xiao, Dirk T. M. Slock
State-evolution analyses of approximate-message-passing and expectation-propagation-type algorithms rely on an effective-channel principle: after a suitable Onsager, orthogonal, or…
Performance Benchmarks for Line Spectral Estimation: Ordered Ziv-Zakai Characterization and Plug-In Amplitude Error Analysis
Fangqing Xiao, Dirk T. M. Slock
Line spectral estimation (LSE) involves estimating both spectral frequencies and their associated complex amplitudes. Existing Fisher-information-based benchmarks are local and the…
Avoiding Non-Integrable Beliefs in Expectation Propagation
Zilu Zhao, Jichao Chen, Dirk Slock
Expectation Propagation (EP) is a widely used iterative message-passing algorithm that decomposes a global inference problem into multiple local ones. It approximates marginal dist…
Approximating Univariate Factored Distributions via Message-Passing Algorithms
Zilu Zhao, Dirk Slock
Gaussian Mixture Models (GMMs) commonly arise in communication systems, particularly in bilinear joint estimation and detection problems. Although the product of GMMs is still a GM…
Expectations in Expectation Propagation
Zilu Zhao, Fangqing Xiao, Dirk Slock
Expectation Propagation (EP) is a widely used message-passing algorithm that decomposes a global inference problem into multiple local ones. It approximates marginal distributions…