K. Yiannopoulos, Emmanouel Varvarigos, V. Katopodis, K. Christodoulopoulos, I. Lazarou, P. Bakopoulos, H. Avramopoulos, D. Klonidis, Ioannis Tomkos, L.-P. Dimos, G. Heliotis
{"title":"Coverage capabilities of a multi-wavelength passive optical network architecture","authors":"K. Yiannopoulos, Emmanouel Varvarigos, V. Katopodis, K. Christodoulopoulos, I. Lazarou, P. Bakopoulos, H. Avramopoulos, D. Klonidis, Ioannis Tomkos, L.-P. Dimos, G. Heliotis","doi":"10.1109/CAMAD.2014.7033204","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033204","url":null,"abstract":"We present a coverage capability analysis for a multi-wavelength passive optical network architecture that is designed for supporting broadband xDSL access. The analysis takes into account the physical layer impairments of optical fibers and components and, via extensive simulations, provides results concerning the reach that can be obtained and the number of wavelengths that can be utilized. Given the physical layer study results, we evaluate the applicability of the proposed scheme in real networking topologies and determine the number of end-users that can be served and the line rates they can enjoy for nine application scenarios in rural, semi-urban, urban and dense urban areas. Our results show that the proposed architecture is perfectly suitable for attaining the 2020 Digital Agenda objectives in terms of penetration and end-user bandwidth.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117124962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Ramantas, Z. Ho, Pin-Hsun Lin, Eduard Axel Jorswieck
{"title":"Massive interference neutralization in DIWINE network","authors":"K. Ramantas, Z. Ho, Pin-Hsun Lin, Eduard Axel Jorswieck","doi":"10.1109/CAMAD.2014.7033249","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033249","url":null,"abstract":"Dense Cooperative Wireless Cloud Network (DIWINE) FP7 project introduces a new wireless cloud network, where the interference interaction is an advantage rather than a limitation. The cloud consists of dense massively air-interacting nodes, that provide a simple and uniform PHY interface to the clients. In this work we consider the Massive Interference (MI) scenario for the DIWINE network, where the number of cloud nodes is much larger than the necessity for a bare connectivity. To accommodate to the MI environment, we propose the interference neutralization (IN) scheme exploited at the cloud to eliminate the interference at the receiving nodes. A signaling protocol is also proposed to determine the transmitting and receiving nodes before data transmission. Numerical results show that the proposed IN with the signaling protocol can lead to good throughput and delay tradeoff under different traffic loads.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132672093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simple network design and power allocation for 5G device-to-device communication","authors":"S. Fowler, Yuan Li, A. Pollastro, S. Napoli","doi":"10.1109/CAMAD.2014.7033235","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033235","url":null,"abstract":"The tremendous popularity of smart phones and electronic tablets has spurred the explosive growth of high-rate multimedia wireless services. To alleviate the huge infrastructure investment in the exponential growth of mobile traffic and improve local service flexibility, device-to-device (D2D) communications have been considered for the next generation mobile telecommunications. This has triggered investigation of fifth gernation (5G) to utilizes D2D communications for hetergenous networks. D2D communications enable users to transmit signals directly without going through the base station. However, many technical challenges need to be addressed for D2D communications to harvest the potential benefits. This requires learning how to improve the the model to better appeal to a wider base and move toward additional solutions. In this paper we provided a simple overview of D2D communications 5G hetergenous network by means of various Integer Linear programming. Finally, we present experiments on how Fractional knapsack using greedy algorithm can be used for power efficiency and improve throughput, thus allowing of future optimization problems.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114554667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ruifeng Zhang, A. R. Chandran, N. Timmons, J. Morrison
{"title":"OppSim: A simulation framework for opportunistic networks based on MiXiM","authors":"Ruifeng Zhang, A. R. Chandran, N. Timmons, J. Morrison","doi":"10.1109/CAMAD.2014.7033202","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033202","url":null,"abstract":"Unreliability is an inherent property of wireless links. In opportunistic networks, these intermittent links are exploited, instead of mitigated, by temporal and/or spatial diversities in order to improve the network performance such as energy efficiency, delay, throughput and so on. Simulation is always an important method for the research in this challenged domain and a suitable simulator or simulation framework can greatly improve the research efficiency. The previous simulators or frameworks for opportunistic networks mainly focus on the design of upper layers but neglect the impact of physical layer on these layers. However, the reality of physical layer simulation is vital to the design of upper layers. In this paper, a simulation framework is developed using the MiXiM framework as basis which can simulate complex wireless physical environment. In this work, an integrated solution for simulation and analysis is provided including all communication layers and network performance analysis modules at each layer. This framework can help the researchers in this domain focus more on the design of protocols and less time on constructing a simulation tool.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114884407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Mitsolidou, G. Kalfas, D. Tsiokos, N. Pleros, A. Miliou
{"title":"A WDM RoF system for heterogeneous 5 GHz/60 GHz wireless applications in MTMAC-enabled networks","authors":"C. Mitsolidou, G. Kalfas, D. Tsiokos, N. Pleros, A. Miliou","doi":"10.1109/CAMAD.2014.7033227","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033227","url":null,"abstract":"We present a heterogeneous passive WDM RoF system that is capable of simultaneously delivering broadband wireless 500 Mb/s services at 5 GHz RF carriers and 2.5 Gb/s LAN traffic at 60 GHz RF carriers over a standard single mode fiber. Our system employs phase modulation formats and optical frequency multiplication in order to increase the transmission distance and reduce the chromatic dispersion, allowing also for the use of cost-effective low-frequency RF components at the CO premises. Detailed performance evaluation results are derived by means of simulations that confirm the successful transmission of both RF carriers with less than 2 dB power penalty over a long distance optical path. The proposed system is fully compatible with the requirements of Medium-Transparent MAC protocols proposed for seamlessly and dynamically allocating resources in 60 GHz RoF LANs.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115574233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Athanasios Stavridis, Dushyantha A. Basnayaka, M. Renzo, H. Haas
{"title":"Average Bit Error Probability of Receive-Spatial Modulation using zero-forcing precoding","authors":"Athanasios Stavridis, Dushyantha A. Basnayaka, M. Renzo, H. Haas","doi":"10.1109/CAMAD.2014.7033272","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033272","url":null,"abstract":"In this paper, we study the Average Bit Error Probability (ABEP) of Receive-Spatial Modulation (R-SM) in Rayleigh channels. R-SM is a multi-antenna wireless scheme that extends the concept of Spatial Modulation (SM) at the receiver side by using linear precoding. An accurate statistical framework is used for the characterization of the received signal. Using this framework, we provide novel and analytical bounds that characterize the ABEP of R-SM. Monte Carlo simulation results are used for the verification of the derived bounds. We compare R-SM against the corresponding standard Multiple-Input Multiple-Output (MIMO) scheme and show its performance. We conclude that R-SM is able to offer the same or better BER performance as traditional MIMO only when the spectral efficiency is low and the number of transmit and receive antennas is low.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117053108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the number of transmissions vs. redundancy tradeoff for flooded fountain codes","authors":"P. Casari, Waqas bin Abbas, M. Zorzi","doi":"10.1109/CAMAD.2014.7033203","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033203","url":null,"abstract":"We consider a multihop ad hoc network where a source node must reliably deliver a set of data packets to a given destination node. To do so, the source applies a fountain code and floods the encoded packets through the network, until they reach their destination or are lost in the process. We model the probability that the destination can recover the original transmissions from the received coded packets as a function of the network topology and of the number of redundant packets generated by the source, and show that our analytical results predict the outcome of simulations very well. These results are finally employed to discuss how the number of cooperating relays and the redundancy of the code should be set in order to achieve a good working point on the tradeoff between the reliability of end-to-end communications and the number of packet transmissions that take place in the network.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116205505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Compression performance and video quality comparison of HEVC and AVC","authors":"H. Koumaras, M. Kourtis, C. Skianis","doi":"10.1109/CAMAD.2014.7033209","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033209","url":null,"abstract":"The main purpose of the paper is to perform a quantitative and qualitative performance evaluation of the emerging standard H.265/HEVC in comparison to its predecessor H.264/AVC. The paper focuses on both the encoding and compression efficiency by measuring the PSNR values, SSIM scores and bit rate values of reference and non-reference signals. For the needs of the paper, the HEVC and AVC reference encoders have been used. Based on the experimental results, it is deduced that the HEVC meets its primary objective, which is to double the compression efficiency of the bit stream without significant degradation of the encoded video quality. Finally, interesting findings are also reported for the very low bit rate area of the encoding rate for low spatial resolutions.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132577844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yiannos Kryftis, C. Mavromoustakis, G. Mastorakis, E. Pallis, J. M. Batalla, Georgios Skourletopoulos
{"title":"Resource usage prediction for optimal and balanced provision of multimedia services","authors":"Yiannos Kryftis, C. Mavromoustakis, G. Mastorakis, E. Pallis, J. M. Batalla, Georgios Skourletopoulos","doi":"10.1109/CAMAD.2014.7033245","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033245","url":null,"abstract":"This paper proposes a novel network architecture for optimal and balanced provision of multimedia services, exploiting a resource prediction system. This architecture enables for the long-term prediction of multimedia services future demands, based on the history of previous network resources usage. The proposed research approach provides the opportunity for the optimal distribution of streaming data, among Content Delivery Networks, cloud-based providers and Home Media Gateways. The short-term prediction that is performed, enables for making the proper decisions by the system, according to specific network metrics, towards achieving higher Quality of Service and Quality of Experience for the end users. The validity of the proposed system is verified through several sets of extended experimental simulation tests, carried out under controlled simulation conditions.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120937639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xavier Pons Masbernat, S. Althunibat, Godfrey Kibalya, C. Gruet, L. Naviner, F. Granelli
{"title":"Battery-aware network discovery algorithm for mobile terminals within heterogeneous networks","authors":"Xavier Pons Masbernat, S. Althunibat, Godfrey Kibalya, C. Gruet, L. Naviner, F. Granelli","doi":"10.1109/CAMAD.2014.7033194","DOIUrl":"https://doi.org/10.1109/CAMAD.2014.7033194","url":null,"abstract":"As the wireless industry evolves towards heterogeneous networks, mobile terminals have been given the ability to handover from one network to another. The network selection process starts by a network discovery operation which involves scanning the candidate networks in order to collect the required information for handover decision. Such operation consumes a considerable amount of energy at the terminal-end and yet the mobile terminal battery is limited. In this paper we propose a battery-aware scanning mechanism in which the number of scanned networks is dependent on the battery level at the terminal-end. Simulation results show an improvement of the terminal performance in terms of energy consumption and energy efficiency compared to the conventional approach where all the networks are scanned periodically.","PeriodicalId":111472,"journal":{"name":"2014 IEEE 19th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124775580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}