124 citations · 164 across the 20 of their papers we have counts for
16 papers · 1 filter
Low-Complexity Maximum Likelihood Detection for Type-Based Over-the-Air Computation
Marc Martinez-Gost, Miguel Ángel Lagunas, Ana Pérez-Neira
Type-based multiple access (TBMA) is a digital over-the-air computation (OAC) scheme that exploits symbol collisions over the wireless multiple-access channel to construct a histog…
Efficient DCT-Based Estimation and Compensation of Nonlinear Channels for OFDM Systems
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
This paper proposes a maximum-likelihood (ML) framework for estimating nonlinear frequency-selective channels in orthogonal frequency-division multiplexing (OFDM) communication sys…
Exponential Noise Robustness of Type-Based Multiple Access for Over-the-Air Computation
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
This paper studies the robustness of type-based multiple access (TBMA) in over-the-air computation (AirComp) under nonparametric estimation, where no prior knowledge of the data di…
The DCT Neuron for Estimation and Compensation of Amplitude Distortions in OFDM Systems
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
We present a receiver-side framework for identifying amplitude distortions in frequency-selective OFDM channels. The core novelty is the use of the DCT Neuron, a compact adaptive p…
The DCT Model as a Novel Regression Framework within a Lagrangian Formulation
Marc Martinez-Gost, Ana I. Perez Neira, Miguel Angel Lagunas
This paper introduces a unified regression framework based on the Lagrange formalism, demonstrating how polynomial and logistic regression can all be formulated within a common var…
Before AI Takes Over: Rethinking Nonlinear Signal Processing in Communications
Ana Pérez-Neira, Marc Martinez-Gost, Miguel Ángel Lagunas
There is an urgent reflection on traditional nonlinear signal processing methods in communications before Artificial Intelligence (AI) dominates the field. It implies a need to rea…
Robust Over-the-Air Computation with Type-Based Multiple Access
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
This paper utilizes the properties of type-based multiple access (TBMA) to investigate its effectiveness as a robust approach for over-the-air computation (AirComp) in the presence…
Expanding Over-the-Air Computation with Frequency Modulations
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
In this study we introduce Logarithmic Frequency Shift Keying (Log-FSK), a novel frequency modulation for over-the-air computation (AirComp). Log-FSK leverages non-linear signal pr…
Predictive Demodulation for Chaotic Communications
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
Chaotic signals offer promising characteristics for wireless communications due to their wideband nature, low cross-correlation, and sensitivity to initial conditions. Although cla…
Frequency Modulation for Task-Oriented Communications and Multiple Access
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
In the context of task-oriented communications we advocate the development of waveforms for Federated Edge Learning (FEEL). Over-the-air computing (AirComp) has emerged as a commun…
Waveforms for Computing Over the Air
Ana Pérez-Neira, Marc Martinez-Gost, Alphan Şahin +3
Over-the-air computation (AirComp) leverages the signal-superposition characteristic of wireless multiple access channels to perform mathematical computations. Initially introduced…
Log-FSK: A Frequency Modulation for Over-the-Air Computation
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
In this study we introduce Logarithmic Frequency Shift Keying (Log-FSK), a novel frequency modulation for over-the-air computation (AirComp). Log-FSK leverages non-linear signal pr…
LoRa Modulation for Split Learning
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
In this paper we introduce a task-oriented communication design for split learning (SL) over a communication channel. Our approach involves the Expressive Neural Network (ENN), a n…
ENN: A Neural Network with DCT Adaptive Activation Functions
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
The expressiveness of neural networks highly depends on the nature of the activation function, although these are usually assumed predefined and fixed during the training stage. Un…
LoRa-based Over-the-Air Computing for Sat-IoT
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
Satellite Internet of Things (Sat-IoT) is a novel framework in which satellites integrate sensing, communication and computing capabilities to carry out task-oriented communication…
Frequency Modulation Aggregation for Federated Learning
Marc Martinez-Gost, Ana Pérez-Neira, Miguel Ángel Lagunas
Federated edge learning (FEEL) is a framework for training models in a distributed fashion using edge devices and a server that coordinates the learning process. In FEEL, edge devi…