Papers by David Fernando Jimenez Vargas
2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM), 2018
The first 5G (5th generation wireless systems) New Radio Release-15 was recently completed. Howev... more The first 5G (5th generation wireless systems) New Radio Release-15 was recently completed. However, the specification only considers the use of unicast technologies and the extension to point-to-multipoint (PTM) scenarios is not yet considered. To this end, we first present in this work a technical overview of the state-of-the-art LTE (Long Term Evolution) PTM technology, i.e., eMBMS (evolved Multimedia Broadcast Multicast Services), and investigate the physical layer performance via link-level simulations. Then based on the simulation analysis, we discuss potential improvements for the two current eMBMS solutions, i.e., MBSFN (MBMS over Single Frequency Networks) and SC-PTM (Single-Cell PTM). This work explicitly focus on equipping the current eMBMS solutions with 5G candidate techniques, e.g., multiple antennas and millimeter wave, and its potentials to meet the requirements of next generation PTM transmissions.
IEEE Transactions on Broadcasting, 2018
This work provides a detailed performance analysis of the physical layer of two state-of-the-art ... more This work provides a detailed performance analysis of the physical layer of two state-of-the-art point-to-multipoint (PTM) technologies: evolved Multimedia Broadcast Multicast Services (eMBMS) and Advanced Television Systems Committee-Third Generation (ATSC 3.0). The performance of these technologies is evaluated and compared using link-level simulations, considering relevant identified scenarios. A selection of Key Performance Indicators (KPI) for the International Mobile Telecommunications 2020 (IMT-2020) evaluation process has been considered. Representative use cases are also aligned to the test environments as defined in the IMT-2020 evaluation guidelines. It is observed that ATSC 3.0 outperforms both eMBMS solutions, i.e. MBMS over Single Frequency Networks (MBSFN) and Single-Cell PTM (SC-PTM) in terms of spectral efficiency, peak data rate and mobility, among others. This performance evaluation serves as a benchmark for comparison with a potential 5G PTM solution.
IEEE Transactions on Broadcasting, 2019
3GPP LTE eMBMS Release 14, also referred to as FeMBMS (Further evolved Multimedia Broadcast Multi... more 3GPP LTE eMBMS Release 14, also referred to as FeMBMS (Further evolved Multimedia Broadcast Multicast Service) or EnTV (Enhanced TV), is the first mobile broadband technology standard to incorporate a transmission mode designed to deliver Terrestrial Broadcast services from conventional High Power High Tower (HPHT) broadcast infrastructure. With respect to the physical layer, the main improvements in FeMBMS are the support of larger inter-site distance for Single Frequency Networks (SFN) and the ability to allocate 100% of a carrier's resources to the broadcast payload, with self-contained signaling in the downlink. From the system architecture perspective, a receive-only mode enables free-to-air (FTA) reception with no need for an uplink or SIM card, thus receiving content without UE registration with a network. These functionalities are only available in the LTE Advanced Pro specifications as 5G New Radio (NR), standardized in 3GPP from Release 15, has so far focused entirely on unicast. This paper outlines a physical layer design for NR-MBMS, a system derived, with minor modifications, from the 5G-NR specifications, and suitable for the transmission of linear TV and radio services in either single-cell or SFN operation. The paper evaluates the NR-MBMS proposition and compares it to LTE-based FeMBMS in terms of flexibility, performance, capacity and coverage.
2010 IEEE 72nd Vehicular Technology Conference - Fall, 2010
Abstract This paper investigates the performance of time interleaving in DVB-T2 in the context of... more Abstract This paper investigates the performance of time interleaving in DVB-T2 in the context of mobile reception. By means of time interleaving it is possible to provide time diversity and improve the robustness of the transmitted information in mobile ...
IEEE Transactions on Broadcasting, 2011
DVB-T2 implements a very flexible time interleaving that allows multiple tradeoffs in terms of ti... more DVB-T2 implements a very flexible time interleaving that allows multiple tradeoffs in terms of time diversity, latency and power saving. In this paper, we study in detail these tradeoffs in the context of mobile reception. Together with time diversity, we also investigate the impact of reduced time de-interleaving memory and Alamouti-based MISO in the mobile reception of DVB-T2 services. In addition, we propose the utilization of upper layer FEC protection in order to overcome the limitations of the DVB-T2 physical layer for the provision of long time interleaving, and enable fast zapping. The performance is evaluated by means of simulations in mobile channels that include the presence of fast fading and shadowing in the received signal. Index Terms-DVB-T2, channel coding, mobile TV, time diversity, time interleaving.
IEEE Transactions on Broadcasting, 2013
In this paper we investigate the combined use of time, frequency, and space diversity in DVB-NGH,... more In this paper we investigate the combined use of time, frequency, and space diversity in DVB-NGH, the next generation mobile broadcasting standard. Compared to current standards like DVB-H or DVB-SH, the largest improvement in next generation systems is expected to be achieved by means of better diversity in the time, frequency, and space domains. In this sense, DVB-NGH is the first broadcasting system to exploit the use of diversity in the three domains by incorporating at the physical layer long time interleaving (TI), time-frequency slicing (TFS), and multiple-input multiple-output (MIMO). This paper investigates the gains of using the three types of diversity in DVB-NGH, as well as the mutual influence between different types of diversity. To this purpose, we employ an informationtheoretic approach based on the outage capacity of the channel in addition to physical layer simulations.
![Research paper thumbnail of MIMO for DVB-NGH, the next generation mobile TV broadcasting [Accepted From Open Call]](https://attachments.academia-assets.com/99942672/thumbnails/1.jpg)
IEEE Communications Magazine, 2013
DVB-NGH (Digital Video Broadcasting-Next Generation Handheld) is the next generation technology f... more DVB-NGH (Digital Video Broadcasting-Next Generation Handheld) is the next generation technology for mobile TV broadcasting, which has been developed by the DVB project with the most advanced transmission technologies. DVB-NGH is the first broadcasting standard to incorporate multiple-input multiple-output (MIMO) as the key technology to overcome the Shannon limit of single antenna communications. MIMO techniques can be used to improve the robustness of the transmitted signal by exploiting the spatial diversity of the MIMO channel, but also to achieve increased data rates through spatial multiplexing. This paper describes the benefits of MIMO that motivated its incorporation in DVB-NGH, reviews the MIMO schemes adopted and discusses some aspects related to the deployment of MIMO networks in DVB-NGH. The paper also provides a feature comparison with the multi-antenna techniques for 3GGP´s LTE/LTE-Advanced for cellular networks. Finally, physical layer simulation results calibrated within the DVB-NGH standardization process are provided to illustrate the gain of MIMO for the next generation of mobile TV broadcasting.
Uploads
Papers by David Fernando Jimenez Vargas