Exploració per autor "Molina Oliveras, Francesc"
Ara es mostren els items 1-20 de 22
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Allocation designs for massive multiple access with interference cancellation
Molina Oliveras, Francesc (Universitat Politècnica de Catalunya, 2021-10-06)
Tesi
Accés obertIn the transition towards the next generation of wireless technology systems, the increasing number of devices curbs the potential of current wireless networks to cope with such increases in network density. Wireless ... -
Asymptotic performance analysis of successive interference cancellation with dynamic user-decoding order
Molina Oliveras, Francesc; Sala Álvarez, José (2020-09-01)
Article
Accés obertWe address the evaluation of dynamic (estimation-based) user-decoding order in successive interference cancellation (SIC) in a proof-of-concept multiple access satellite setting in which many code-division multiple access ... -
Average PER performance metrics of iterative successive interference cancellation
Molina Oliveras, Francesc; Sala Álvarez, José (2019-09-16)
Article
Accés obertThe average packet error rate (PER) and user-PER profiles of iterative successive interference cancellation (I-SIC) are analyzed for a proof-of-concept scenario where asymptotically many code-division-multiple-access users ... -
Battery-aware probabilistic access scheme with nature and RF energy harvesting for cognitive radio networks
Molina Oliveras, Francesc (Universitat Politècnica de Catalunya, 2015-07)
Treball Final de Grau
Accés obertIn this work, a short-range unlicensed link intends to coexist with a directional-nodes licensed network, deployed as a 2D Homogeneous Poisson Point Process. The unlicensed transmitter uses two energy harvesting mechanisms ... -
Channel-aware energy allocation for throughput maximization in massive low-rate multiple access
Molina Oliveras, Francesc; Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier (Institute of Electrical and Electronics Engineers (IEEE), 2019)
Text en actes de congrés
Accés obertA multiple access (MA) optimization technique for massive low-rate direct-sequence spread spectrum communications is analyzed in this work. A dense network of users transmitting at the same rate to a common central node ... -
Comunicacions analògiques i digitals: apunts de teoria: sistemes de comunicacions banda base
Sala Álvarez, José; Molina Oliveras, Francesc (Universitat Politècnica de Catalunya, 2020)
Apunts
Accés obert -
Comunicacions analògiques i digitals: apunts de teoria: sistemes de comunicacions pas banda
Sala Álvarez, José; Molina Oliveras, Francesc (Universitat Politècnica de Catalunya, 2021-06)
Apunts
Accés obert -
Comunicacions analògiques i digitals: manual de pràctiques
Molina Oliveras, Francesc; Sala Álvarez, José (Universitat Politècnica de Catalunya, 2021-06)
Pràctica
Accés obert -
Decentralized random energy allocation for massive non-orthogonal code-division multiple access
Molina Oliveras, Francesc; Villares Piera, Nemesio Javier; Rey Micolau, Francesc; Sala Álvarez, José (2019-10-07)
Article
Accés obertThis work studies the spectral efficiency achievable when a very large number of terminals are connected simultaneously to a central node (uplink) through independent and identically-distributed flat-fading channels. ... -
Discontinuous user-energy distribution for dynamically ordered successive interference cancellation
Molina Oliveras, Francesc; Sala Álvarez, José (2021-05)
Article
Accés obertIn this letter, we consider many users sharing the same codebook and employing random signatures to modulate preamble plus payload data. Successive interference cancellation (SIC) is performed at the receiver side, whereby ... -
Energy allocation design for the satellite return channel of a massive NOMA system with interference cancellation
Molina Oliveras, Francesc; Sala Álvarez, José (Institute of Electrical and Electronics Engineers (IEEE), 2022-06)
Article
Accés obertThe energy allocation problem in a massive access setting under iterative successive interference cancellation (SIC) is undertaken in this work. The classic one-iteration SIC still has room for improvement when the channel ... -
Energy allocation for short-packet massive multiple access with two-iteration successive decoding
Molina Oliveras, Francesc; Sala Álvarez, José (Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertAn optimum energy allocation for massive user networks operating under iterative successive interference cancellation (I-SIC) is derived in this work. We analyze an uplink setting where a large network of cost-effective ... -
Energy and rate allocation for massive multiple access with interference cancelation
Molina Oliveras, Francesc; Sala Álvarez, José; Villares Piera, Nemesio Javier; Rey Micolau, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2022)
Article
Accés obertThis article addresses the problem of energy and code allocation to many users accessing, under spreading-based nonorthogonal multiple access, a wireless node set up with a successive interference cancellation architecture ... -
Energy-efficient analog beamforming with short packets in millimeter-wave MIMO systems
Borràs Pino, Jordi; Molina Oliveras, Francesc; López Valcarce, Roberto; Sala Álvarez, José (Institute of Electrical and Electronics Engineers (IEEE), 2020)
Text en actes de congrés
Accés obertThe energy-aware design of fully analog precoders and combiners is investigated in this paper. To that aim, we consider a millimeter-wave short-packet communication scenario where power consumption and hardware complexity ... -
Examen Final
Cabrera Estanyol, Ferran de; Molina Oliveras, Francesc; Liesegang Maria, Sergi; Salavedra Molí, Josep; Vallverdú Bayés, Sisco (Universitat Politècnica de Catalunya, 2021-06-16)
Examen
Accés restringit a la comunitat UPC -
Examen final del quadrimestre de primavera, curs 2018-2019: enunciat i solucions genèriques
Gasull Llampallas, Antoni; Liesegang Maria, Sergi; Molina Oliveras, Francesc; Sala Álvarez, José; Salavedra Molí, Josep; Vallverdú Bayés, Sisco (Universitat Politècnica de Catalunya, 2019-06-17)
Examen
Accés restringit a la comunitat UPC -
Joint energy and rate allocation for successive interference cancellation in the finite blocklength regime
Molina Oliveras, Francesc; Sala Álvarez, José; Villares Piera, Nemesio Javier; Rey Micolau, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2018)
Comunicació de congrés
Accés obertThis work addresses the optimization of the network spectral efficiency (SE) under successive interference cancellation (SIC) at a given blocklength n. We adopt a proof-of-concept satellite scenario where network users can ... -
Low-complexity switching network design for hybrid precoding in mmWave MIMO systems
Molina Oliveras, Francesc; Borràs Pino, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2019)
Text en actes de congrés
Accés obertThis paper deals with the design of a hybrid precoder for millimeter-wave MIMO systems. For the sake of concreteness, we consider an analog processing stage composed of a switching network with analog combining. The main ... -
Minimum PER user-energy profile for massive SIC receivers under an average energy constraint
Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier; Molina Oliveras, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2017)
Comunicació de congrés
Accés obertInterference may pose a severe limitation to massive wireless multiple access unless the central receiver is endowed with strong multipacket reception capabilities. In that respect, Interference Cancellation (IC) has been ... -
Optimal power control law for equal-rate DS-CDMA networks governed by a successive soft interference cancellation scheme
Molina Oliveras, Francesc; Sala Álvarez, José; Villares Piera, Nemesio Javier; Rey Micolau, Francesc (Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés obertThis paper studies the throughput maximization of a dense multiple access network of low-rate subscribers that share the same practical Forward Error Correction (FEC) code and modulation scheme, and transmit to a central ...