Zobrazeno 1 - 10
of 359
pro vyhledávání: '"Liva, Gianluigi"'
Autor:
Liva, Gianluigi, Polyanskiy, Yury
This paper is a tutorial introduction to the field of unsourced multiple access (UMAC) protocols. We first provide a historical survey of the evolution of random access protocols, focusing specifically on the case in which uncoordinated users share a
Externí odkaz:
http://arxiv.org/abs/2408.09874
Autor:
Agostini, Patrick, Chamberland, Jean-Francois, Clazzer, Federico, Dommel, Johannes, Liva, Gianluigi, Munari, Andrea, Narayanan, Krishna, Polyanskiy, Yury, Stanczak, Slawomir, Utkovski, Zoran
This report summarizes some considerations on possible evolutions of grant-free random access in the next generation of the 3GPP wireless cellular standard. The analysis is carried out by mapping the problem to the recently-introduced unsourced multi
Externí odkaz:
http://arxiv.org/abs/2405.03348
We analyze the performance of enhanced spread spectrum Aloha (E-SSA) in the framework of unsourced multiple access (UMAC). The asynchronous, unframed transmission of E-SSA is modified to enable a direct comparison with framed UMAC schemes and with Po
Externí odkaz:
http://arxiv.org/abs/2402.12101
Most low-density parity-check (LDPC) code constructions are considered over finite fields. In this work, we focus on regular LDPC codes over integer residue rings and analyze their performance with respect to the Lee metric. Their error-correction pe
Externí odkaz:
http://arxiv.org/abs/2312.14674
Chase-Pyndiah decoding is widely used for decoding product codes. However, this method is suboptimal and requires scaling the soft information exchanged during the iterative processing. In this paper, we propose a framework for obtaining the scaling
Externí odkaz:
http://arxiv.org/abs/2308.08326
Autor:
Vejling, Martin Voigt, Chiariotti, Federico, Kalør, Anders Ellersgaard, Gündüz, Deniz, Liva, Gianluigi, Popovski, Petar
The trade-off between reliability, latency, and energy-efficiency is a central problem in communication systems. Advanced hybrid automated repeat request (HARQ) techniques can reduce the number of retransmissions required for reliable communication,
Externí odkaz:
http://arxiv.org/abs/2306.02726
A class of rate-adaptive protograph MacKay-Neal (MN) codes is introduced and analyzed. The code construction employs an outer distribution matcher (DM) to adapt the rate of the scheme. The DM is coupled with an inner protograph-based low-density pari
Externí odkaz:
http://arxiv.org/abs/2303.09887
We study a system in which two-state Markov sources send status updates to a common receiver over a slotted ALOHA random access channel. We characterize the performance of the system in terms of state estimation entropy (SEE), which measures the unce
Externí odkaz:
http://arxiv.org/abs/2303.04507
We study the dynamic behavior of frameless ALOHA, both in terms of throughput and age of information (AoI). In particular, differently from previous studies, our analysis accounts for the fact that the number of terminals contending the channel may v
Externí odkaz:
http://arxiv.org/abs/2301.10078
We present a finite blocklength performance bound for a DNA storage channel with insertions, deletions, and substitutions. The considered bound -- the dependency testing (DT) bound, introduced by Polyanskiy et al. in 2010 -- provides an upper bound o
Externí odkaz:
http://arxiv.org/abs/2212.09303