Semianalytical Approach to the PDF of SINR in HPHT and LPLT Single-Frequency Networks

(c) 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this[EN] Single-frequency networks (SFN) are widely adopted in terrestrial broadcast networks based on high-power high-tower (HPHT) deployments. The mobile broadcasting standard Evolved Multimedia Broadcast Multicast Service (eMBMS) has been enhanced in Release 14 to enable SFN operation with larger CP duration which may allow for the deployment of large area SFNs and even the combined operation between HPHT and low-power low-tower (LPLT) cellular stations. The knowledge of the signal-to-interference-plus-noise ratio (SINR) distribution over an SFN area may facilitate the selection of transmission parameters according to the network topology. This paper presents a semianalytical method for the calculation of the SINR distribution in SFNs with low computational complexity compared to Monte Carlo simulations. The method, which builds on previous work developed for cellular communications, is applied to HPHT+LPLT SFNs and evaluated against different transmission and network parameters.This work was supported in part by the Ministerio de Educacion y Ciencia, Spain, under Grant TEC2014-56483-R, in part by European FEDER funds.Gimenez Gandia, JJ.; Sung, KW.; Gomez-Barquero, D. (2018). Semianalytical Approach to the PDF of SINR in HPHT and LPLT Single-Frequency Networks. IEEE Transactions on Vehicular Technology. 67(5):4173-4181. https://doi.org/10.1109/TVT.2018.2791347S4173418167

Single-Frequency Network Terrestrial Broadcasting with 5GNR Numerology

L'abstract è presente nell'allegato / the abstract is in the attachmen

Τεχνοοικονομική μελέτη των ευκαιριών σύγκλισης της επίγειας ψηφιακής ραδιοτηλεοπτικής ευρυεκπομπής και των κινητών ευρυζωνικών δικτύων

Το κύριο μέσο διανομής του τηλεοπτικού προϊόντος στην Ευρώπη εξακολουθεί στις μέρες μας να είναι το επίγειο ψηφιακό δίκτυο ευρυεκπομπής (DTT), ενώ έπονται η δορυφορική και καλωδιακή πλατφόρμα με σημαντικά ποσοστά διείσδυσης. Αλλά αν ρωτηθεί κάποιος και δη ένας νέος πως προτιμά να παρακολουθεί τηλεόραση και να καταναλώνει βίντεο, πιθανότατα θα απαντήσει: «δεν ανοίγω καν την τηλεόραση αλλά θα το σκεφτόμουν να αγοράσω μια συνδρομητική υπηρεσία IPTV», «την αγαπημένη μου σειρά την είδα χθες στο tablet» (VoD, TV anytime), «όσο περίμενα στη στάση του λεωφορείου έριξα μια ματιά σε κάτι τρέιλερ στο Youtube από το κινητό μου» (ΟΤΤ, TV anywhere). Οι τάσεις τηλεθεάσεις αλλάζουν, οι δυνατότητες των δικτύων βελτιώνονται και η ζήτηση για ραδιοφάσμα διογκώνεται. Η συζήτηση περί συγκλινουσών τεχνολογιών που θα εξυπηρετούν αυτές τις απαιτήσεις υπό το πρίσμα της αποδοτικής διαχείρισης του ραδιοφάσματος και τη διαμόρφωση μιας ενιαίας ψηφιακής στρατηγικής σε επίπεδο Ε.Ε. είναι πιο επίκαιρη από ποτέ. Στόχος της διπλωματικής εργασίας είναι να αναδείξει και εξειδικεύσει τις νέες ανάγκες κατανάλωσης περιεχομένου βίντεο, να παρουσιάσει τις τεχνολογικές λύσεις που μπορούν να προσφέρουν τα δίκτυα με έμφαση κυρίως σε αυτά των κινητών επικοινωνιών και παράλληλα να αποτιμήσει το οικονομικό όφελος της μετάβασης σε ένα νέο οπτικοακουστικό μοντέλο όπου τα ενδιαφερόμενα μέρη (ραδιοτηλεοπτικοί φορείς, πάροχοι κινητών επικοινωνιών) θα έχουν σαφή επιχειρηματικά κίνητρα.The main means of distribution of the television product in Europe is still in our days the DTT network, followed by the satellite and cable platform with significant penetration rates. But if someone is asked, especially a younger person, how he prefers to watch television and consume video, in all likelihood, he will answer: “I don’t even watch television but I will consider purchase an IPTV subscription service”, “I watched my favorite series yesterday on my tablet” (VoD, TV anytime), “While I was waiting at the bus stop I took a look at some trailers on Youtube from my smartphone” (OTT, TV anywhere). Viewing trends are changing, the capabilities of the networks are improving and the demand for more spectrum is growing. The discussion about converging technologies which will serve these requirements in the light of efficient spectrum management and the development of a single digital strategy at EU level is more timely than ever. The aim of the Master’s thesis is to highlight and specify the new needs for video content consumption, to present the technological solutions that networks can offer with a focus on mobile communications, while at the same time to assess the economic benefit of switching to a new audiovisual model where the stakeholders (broadcasters, mobile operators) will have clear business incentives

Potentzia domeinuko NOMA 5G sareetarako eta haratago

Tesis inglés 268 p. -- Tesis euskera 274 p.During the last decade, the amount of data carried over wireless networks has grown exponentially. Several reasons have led to this situation, but the most influential ones are the massive deployment of devices connected to the network and the constant evolution in the services offered. In this context, 5G targets the correct implementation of every application integrated into the use cases. Nevertheless, the biggest challenge to make ITU-R defined cases (eMBB, URLLC and mMTC) a reality is the improvement in spectral efficiency. Therefore, in this thesis, a combination of two mechanisms is proposed to improve spectral efficiency: Non-Orthogonal Multiple Access (NOMA) techniques and Radio Resource Management (RRM) schemes. Specifically, NOMA transmits simultaneously several layered data flows so that the whole bandwidth is used throughout the entire time to deliver more than one service simultaneously. Then, RRM schemes provide efficient management and distribution of radio resources among network users. Although NOMA techniques and RRM schemes can be very advantageous in all use cases, this thesis focuses on making contributions in eMBB and URLLC environments and proposing solutions to communications that are expected to be relevant in 6G