356 citations · 1.4k across the 78 of their papers we have counts for
9 papers · 1 filter
Fully Asynchronous Unsourced Random Access over Fading Channels
Mert Ozates, Mohammad Kazemi, Gianluigi Liva +1
We examine unsourced random access in a fully asynchronous setup, where active users transmit their data without restriction on the start time over a fading channel. In the propose…
Rate-Adaptive Protograph-Based MacKay-Neal Codes
Ayman Zahr, Emna Ben Yacoub, Balázs Matuz +1
Rate-adaptive MacKay-Neal (MN) codes based on protographs are analyzed. The code construction employs an outer distribution matcher (DM) to adapt the rate of the scheme. The DM is…
Rate-Adaptive Spatially Coupled MacKay-Neal Codes with Thresholds Close to Capacity
Ayman Zahr, Gianluigi Liva
We analyze by density evolution the asymptotic performance of rate-adaptive MacKay-Neal (MN) code ensembles, where the inner code is a protograph spatially coupled (SC) low-density…
To Share, or Not to Share: A Study on GEO-LEO Systems for IoT Services with Random Access
Marcel Grec, Federico Clazzer, Israel Leyva-Mayorga +3
The increasing number of satellite deployments, both in the low and geostationary Earth orbit exacerbates the already ongoing scarcity of wireless resources when targeting ubiquito…
Ensemble Average Analysis of Non-Adaptive Group Testing with Sparse Pooling Graphs
Emna Ben Yacoub, Gianluigi Liva, Enrico Paolini +1
A combinatorial analysis of the false alarm (FA) and misdetection (MD) probabilities of non-adaptive group testing with sparse pooling graphs is developed. The analysis targets the…
Error Detection Based on Generalized Successive Cancellation List Decoding for Polar Codes
Alexander Sauter, Mustafa Cemil Coşkun, Gianluigi Liva
Successive cancellation list (SCL) decoding has been widely adopted for polar codes, which allows near maximum likelihood performance with sufficiently large list size. In this wor…
Density Evolution Analysis of Sparse-Block IDMA
Jean-Francois Chamberland, Gianluigi Liva, Krishna Narayanan
Sparse block interleaver division multiple access (SB-IDMA) is a recently introduced unsourced multiple access protocol that aims to improve the performance of the grant-free two-s…
A Fully Asynchronous Unsourced Random Access Scheme
Mert Ozates, Mohammad Kazemi, Gianluigi Liva +1
We investigate fully asynchronous unsourced random access (URA), and propose a high-performing scheme that employs on-off division multiple access (ODMA). In this scheme, active us…
Undetected Error Probability in the Short Blocklength Regime: Approaching Finite-Blocklength Bounds with Polar Codes
Alexander Sauter, A. Oguz Kislal, Giuseppe Durisi +3
We analyze the trade-off between the undetected error probability (i.e., the probability that the channel decoder outputs an erroneous message without detecting the error) and the…