3 papers
cs.IT2025
Many-User Multiple Access with Random User Activity: Achievability Bounds and Efficient Schemes
Xiaoqi Liu, Pablo Pascual Cobo, Ramji Venkataramanan
We study the Gaussian multiple access channel with random user activity, in the regime where the number of users is proportional to the code length. The receiver may know some stat…
cs.IT2025
Quantitative Group Testing and Pooled Data in the Linear Regime with Sublinear Tests
Nelvin Tan, Pablo Pascual Cobo, Ramji Venkataramanan
In the pooled data problem, the goal is to identify the categories associated with a large collection of items via a sequence of pooled tests. Each pooled test reveals the number o…
cs.IT2024
Bayes-Optimal Estimation in Generalized Linear Models via Spatial Coupling
Pablo Pascual Cobo, Kuan Hsieh, Ramji Venkataramanan
We consider the problem of signal estimation in a generalized linear model (GLM). GLMs include many canonical problems in statistical estimation, such as linear regression, phase r…