http://hdl.handle.net/2117/1258 2013-05-22T05:14:20Z http://hdl.handle.net/2117/18189 Title: FREEDOM - D42 Design and evaluation of effective procedures for MAC layer Authors: Mach, P.; Becvar, Z.; Bestak, R.; Neruda, M.; Roux, P.; Hariyanto, H.; Ari Wibowo, F.X.; Agustín de Dios, Adrián; Muñoz Medina, Olga; Vidal Manzano, José; Carfagna, A. Abstract: The implementation of femtocells introduces many technical challenges that must be solved in order to fully exploit their potentials. This deliverable primarily focuses on control procedures for radio resource management addressing the most critical issues. To utilize radio resources of femtocell efficiently, a novel routing of data among user s served by the same femtocell is proposed. Furthermore, spectrum-efficient technique for power control, scheduling (both at radio side and backhaul side and multicast/broadcast services transmissions are designed. Additionally, novel authorization approaches and femtocells’ identification technique are proposed while taking in consideration the scalability of the system. This document designs and specifies the control plane procedures to ensure effective coordination among femtocells and macrocell designed in WP3. Finally, cross-layer optimization issues are addressed here by means of optimal femtocells’ power allocation derivation using the Game Theory framework. 2013-03-11T18:42:06Z http://hdl.handle.net/2117/18188 Title: FREEDOM D3.3 - Cooperative schemes in the femto-based networks Authors: Agustín de Dios, Adrián; Vidal Manzano, José; Pescosolido, L.; Barbarossa, S.; Kammoun, M.; Sarkiss, M. Abstract: We investigate cooperative transmission schemes that can be applied to joint deployments of femto-access points (FAPs) and macro base stations (MBS) by exploiting backhaul communication links between nodes at the data-plane level. First, we study the effects of some hardware impairments, such as time misalignment and carrier offset compensation, on cooperation performance. Additionally, we look into the MIMO X channel as a general framework that subsumes all possible types of cooperative communication between two sources and two destinations (broadcast, interference or multiple access channels), assuming full channel state information at the transmitters. Since FAPs have a delay constrained backhaul the cooperation of multiple FAPs becomes sensitive to random delays at the sources. In this regard we have provided two solutions: a) appropriate delay-tolerant cooperative space-time coding and decoding schemes and b) specific cooperative schemes for critical delay applications. 2013-03-11T18:36:16Z http://hdl.handle.net/2117/14862 Title: FREEDOM Project. Scenario, requirements and first business model analysis Authors: Imponente, Giovanni; Vivier, G.; Agustín de Dios, Adrián; Vidal Manzano, José; Muñoz Medina, Olga; Barbarossa, Sergio; Pescosolido, Loreto; Omilipo, M; de Marinis, Enrico; Simamora, L; Widiawan, A.K.; Hariyanto, H; Corre, Y; Mach, P; Becvar, Z; Kamoun, M; Roux, P; Lopatka, M Abstract: This deliverable is the first of FREEDOM project. It provides an outlook of the scenarios and assumptions widely shared in the wireless community when addressing femtocell deployment. It starts by providing scenarios as seen from the business perspective, and then they are further described with a more technical perspective. Both interference and mobility are addressed although from the review of foras and standardization bodies, the interference issues are more extensively considered. From these scenarios we derived a list of requirement that should be met by femto-cell systems. These requirements must drive the technical work in the other work-pacakges of FREEDOM. The report then captures the main assumptions for simulation in order to align the work from various WPs and partners around similar set of assumptions. A final section presents true business model from operator standpoint, highlighting the potential of massive femto-cell deployment. 2012-01-30T11:04:53Z http://hdl.handle.net/2117/14860 Title: FREEDOM Project. Interference coordination protocols in femto-based networks Authors: Rosi, Guido; Pucci, Fabrizio; Imponente, Giovanni; de Marinis, Enrico; Baiocchi, Andrea; Barbarossa, Sergio; di Lorenzo, Paolo; Agustín de Dios, Adrián; Muñoz Medina, Olga; Vidal Manzano, José; Goldhamer, M.; Rodríguez Fonollosa, Javier; Pastore, A.; Sardellitti, Stefania; Pescosolido, Loreto Abstract: This document looks into coordinated radio resource allocation algorithms in deployments of huge number of femto-access points (FAP) by exploiting the message exchange at control-plane level through the wired ISP backhaul link. The algorithms present in this document are based on decentralized cooperative strategies supported by Game Theory. Decentralized resource allocation algorithms based on price exchange have been derived under different criteria: guaranteeing a minimum rate with the minimum power, maximizing the weighted sum-rate of the system, maximizing the opportunistic throughput when there are different source of randomness like random link failures and noise quantization or when the activity of macro-users is not known by FAPs (coordinated channel sensing or modelling the activity). Additionally, a genetic-based resource allocation is investigated, providing centralized and decentralized algorithms, to which the Game Theory solutions are challenged. In all cases, the techniques derived require modifications of the current LTE-A standard which are identified. Finally, some of those algorithms have been evaluated in a Realistic corporate scenario elucidating the advantages of coordinated resource allocation techniques proposed. 2012-01-30T10:30:12Z http://hdl.handle.net/2117/14802 Title: ANTARES Project (Bridging Phase). Payload carrier synchronization : algorithms and simulations Authors: Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J. Abstract: Informe final Bridging Phase. Versió 3.2 2012-01-25T12:45:13Z http://hdl.handle.net/2117/13252 Title: ADC Quantization Requirements Authors: Riba Sagarra, Jaume; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J. Abstract: In this document, we analyze the impact of the quantization at the input of the demultiplexer. The required number of bits of the Analog-to-Digital-Converter (ADC) is obtained, along with the corresponding quantization losses. 2011-09-19T18:06:23Z http://hdl.handle.net/2117/12062 Title: Proyecto AVANT. Estudio de técnicas de sincronización para relaciones señal a ruido muy bajas. D12. Disseny i simulació dels algorismes de sincronització Authors: Villares Piera, Nemesio J.; Font Segura, Josep; Lamarca Orozco, M. Meritxell; Matas Navarro, David; Ramírez Javega, Francisco; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio Abstract: In this document, the synchronization algorithms developed during the project are presented and simulated. The studied algorithms are designed for a QS-CDMA system operating in the low SNR regime, i.e., at low Es/No values and/or with severe multiple access interference. Moreover, the proposed synchronization techniques must work correctly in the difficult mobility scenarios considered in the project (i.e., aeronautical, railroad and nautical scenarios). 2011-03-25T08:55:16Z http://hdl.handle.net/2117/12053 Title: Informe final. Demostrador de serveis Galileo per Catalunya Authors: Villares Piera, Nemesio J.; Calvo Muntaner, Eduard; Carlavilla Márquez, Màxim; Lamarca Orozco, M. Meritxell; López Salcedo, José Antonio; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio 2011-03-24T13:57:58Z http://hdl.handle.net/2117/12034 Title: Proyecto AVANT. Estudio de técnicas de sincronización para relaciones señal a ruido muy bajas. D11: Disseny del codificador i descodificador del turbo-codi de l'estàndard DVB-RCS Authors: Lamarca Orozco, M. Meritxell; Ramírez Javega, Francisco; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J. Abstract: This document contains the instructions for the design of the DVB-RCS turbo-code. Both the algorithmic and implementation issues are addressed in the document. 2011-03-23T14:57:37Z http://hdl.handle.net/2117/11940 Title: D3. Sincronización robusta de frecuencia y fase para M-PSK sobre CDMA Authors: Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J. 2011-03-18T08:26:03Z http://hdl.handle.net/2117/11939 Title: D1. Estudio de códigos PN para mejorar el ensanchado y la eficiencia espectral del sistema CDMA síncrono y asíncrono Authors: Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J. 2011-03-18T08:23:32Z http://hdl.handle.net/2117/11917 Title: D2. Estructuras de detector multiusuario para CDMA síncrono y asíncrono Authors: Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J. 2011-03-17T13:05:43Z http://hdl.handle.net/2117/11866 Title: ANTARES Project (Phase B). Multiple acces scheme definition. Diverse trade-offs analysis for TDMA and CDMA Authors: Villares Piera, Nemesio J.; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio Description: Informe 1. Versió 1.0 2011-03-16T10:39:15Z http://hdl.handle.net/2117/11865 Title: ANTARES Project (Phase B). Multiple acces scheme definition. Spectral efficiency analysis of the MAC techniques considered for the Antares forward and return links Authors: Villares Piera, Nemesio J.; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio Description: Informe 2. Versió 1.0 2011-03-16T10:37:16Z http://hdl.handle.net/2117/11864 Title: ANTARES Project (Phase B). Physical layer definition. Equalization detailed design Authors: Villares Piera, Nemesio J.; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio Description: Informe 3. Versió 1.0 2011-03-16T10:35:50Z