Results 31 to 40 of about 22,554 (188)
Optimization Framework and Graph-Based Approach for Relay-Assisted Bidirectional OFDMA Cellular Networks [PDF]
, 2010 This paper considers a relay-assisted bidirectional cellular network where the base station (BS) communicates with each mobile station (MS) using OFDMA for both uplink and downlink.
Li, Bin +3 more
core +1 more source
Joint radar-communication waveform designs using signals from multiplexed users [PDF]
, 2020 Joint radar-communication designs are exploited in applications where radar and communications systems share the same frequency band or when both radar sensing and information communication functions are required in the same system.
Cao, Ning +3 more
core +1 more source
Statistical analysis of OFDMA assignments
2008 IEEE International Symposium on Wireless Communication Systems, 2008 In this paper we investigate statistical properties of IP optimal subcarrier assignments in the down-link of an OFDMA cell. Essentially, we show that such subcarrier assignments do have ?hidden? statistical properties which can be exploited to design an extremely simple assignment strategy.
Vega, Maria, Gross, James
openaire +3 more sources
Analysis Framework for Opportunistic Spectrum OFDMA and its Application to the IEEE 802.22 Standard
, 2012 We present an analytical model that enables throughput evaluation of Opportunistic Spectrum Orthogonal Frequency Division Multiple Access (OS-OFDMA) networks.
Grønsund, Pål +3 more
core +1 more source
Dynamic Bandwidth Allocation in Heterogeneous OFDMA-PONs Featuring Intelligent LTE-A Traffic Queuing [PDF]
, 2014 This work was supported by the ACCORDANCE project, through the 7th ICT Framework Programme. This is an Accepted Manuscript of an article accepted for publication in Journal of Lightwave Technology following peer review.
Kanonakis, Konstantinos +5 more
core +1 more source
Buffer sharing on an OFDMA downlink
21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2010 In this work we consider the allocation of buffer space to data streams sharing a common high-speed wireless transmitter. As an example, we focus on an OFDMA-based downlink system scenario. Scheduling for maximum throughput has been extensively studied in the literature.
Girici, Tolga +2 more
openaire +3 more sources
Generalized Network-Coded Cooperation in OFDMA Communications
IEEE Access, 2018 Cooperative communication is a well-established technique to obtain diversity and consequently combat the fading inherent to the wireless channel. In a recent work, network-coded cooperation (NCC) along with graph theory-aided subcarrier allocation was ...
Zaqueu Cabral Pereira +4 more
doaj +1 more source
EURASIP Journal on Wireless Communications and Networking, 2009 The problem of multiservice transmission in OFDMA-based cooperative relay networks is studied comprehensively. We propose a framework to adaptively allocate power, subcarriers, and data rate in OFDMA system to maximize spectral efficiency under the ...
Wenbo Wang, Shuping Chen, Xing Zhang
doaj +2 more sources
Dimensioning of 5G Networks by Using Stochastic Geometry
International Journal of Information and Communication Technology Research, 2021 In this paper, we propose an analytical model for dimensioning of Orthogonal Frequency Division Multiple Access (OFDMA) systems in 5G networks by considering Internet of Thing (IoT) application using stochastic geometry.
Siminfar Samakoush Galougah +1 more
doaj
An Efficient Backoff Procedure for IEEE 802.11ax Uplink OFDMA-Based Random Access
IEEE Access, 2022 IEEE 802.11ax stations can use multi-user (MU) uplink OFDMA-based random access (UORA) to improve per-station throughput in dense deployments in comparison to legacy IEEE 802.11 single-user access.
Katarzyna Kosek-Szott, Krzysztof Domino
doaj +1 more source