Now showing items 1-13 of 13

    • A Data LifeCycle model for smart cities 

      Sinaeepourfard, Amir; García Almiñana, Jordi; Masip Bruin, Xavier; Marín Tordera, Eva; Yin, Xuefeng; Wang, Chao (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Open Access
      Smart Cities are the most challenging and promising technological solutions for absorbing the increasing pressure of population growth, while simultaneously enforcing a sustainable economic progress as well as a higher ...
    • Attitude estimation for base station antennas based on downlink channel statistics 

      Ling, Cen; He, Yonguy; Yin, Xuefeng; Zhong, Zhimeng; Duan, Weiming; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      In this contribution, a maximum-likelihood-based approach is proposed for estimating the attitudes of sectoring base station (BS) antennas based on the power of the received signals observed by multiple user equipments ...
    • Attitude estimation for in-service base station antenna using downlink channel fading statistics 

      Ling, Cen; Yin, Xuefeng; Yongyu, He; Ruiz Boqué, Sílvia (2015-01-01)
      Article
      Open Access
      Amaximum-likelihood-estimation method is proposed for extracting the attitude of a sectoring base station (BS) antenna by using the received signal strengths observed by multiple user equipments (UEs) in this contribution. ...
    • Channel maps and stochastic models in elevation based on measurements in operating networks 

      Yu, Jiwei; Yin, Xuefeng; Chen, Jiajing; Zhang, Nan; Zhong, Zhimeng; Duan, Weiming; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
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      In this contribution, a channel measurement campaign recently carried out in the Jiading campus of Tongji University, Shanghai, China, is introduced. The downlink signals of an active Universal Mobile Telecommunications ...
    • Dual-polarized channel characterization based on measurements in in-service UMTS networks 

      Zhang, Wenjie; Yin, Xuefeng; He, Yonguy; Yu, Jiwei; Zhang, Nan; Zhong, Zhimeng; Duan, Weiming; Zhang, Xiaomei; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      In this contribution, the measurements conducted in an in-service Universal Mobile Telecommunication System (UMTS) network in the Minghang campus of Shanghai Jiaotong University, China, are reported. The outdoor measurement ...
    • Efficient cognitive radio networks with cooperative beamforming 

      Ling, Cen; Ruiz Boqué, Sílvia; Yin, Xuefeng; García Lozano, Mario (2014)
      Conference report
      Restricted access - publisher's policy
      Cooperative communication with spectrum sharing has been proved to be an efficient way to reduce energy consumption. In this work an optimal power allocation algorithm is proposed for mobile cooeprative beamforming networks, ...
    • Measurement-based LoS/NLoS channel modeling for hot-spot urban scenarios in UMTS networks 

      Chen, Jiajing; Yin, Xuefeng; Tian, Li; Zhang, Nan; He, Yonguy; Cheng, Xiang; Duan, Weiming; Ruiz Boqué, Sílvia (2014-08-17)
      Article
      Open Access
      A measurement campaign is introduced for modeling radio channels with either line-of-sight (LoS) or non-line-of-sight (NLoS) connection between user equipment (UE) and NodeB (NB) in an operating universal mobile ...
    • Measurement-based LoS/NLoS channel modeling for hot-spot urban scenarios in UMTS networks 

      Chen, Jiajing; Yin, Xuefeng; Tian, Li; Zhang, Nan; He, Yonguy; Cheng, Xiang; Duan, Weiming; Ruiz Boqué, Sílvia (2014)
      Conference report
      Restricted access - publisher's policy
      In this contribution, a measurement campaign is introduced for modeling radio channels with either Line-of-Sight (LoS) or Non-Line-of-Sight (NLoS) connection between a user equipment (UE) and a NodeB (NB) in an operating ...
    • Optimal power allocation and relay selection in green cooperative communication 

      Ling, Cen; Ruiz Boqué, Sílvia; Yin, Xuefeng; García Lozano, Mario (2014)
      Conference report
      Restricted access - publisher's policy
      —Cooperative communication with spectrum sharing has been proved as an efficient way to reduce energy consumption. In this work, we address the problem of the best relay selection and optimal power allocation. In ...
    • Optimal power allocation and relay selection in spectrum sharing cooperative networks 

      Ling, Cen; Yin, Xuefeng; Ruiz Boqué, Sílvia; García Lozano, Mario (2014)
      Conference report
      Restricted access - publisher's policy
      Cooperative communication with spectrum sharing has been proved as an efficient way to reduce energy consumption. In this work, we address the problem of the best relay selection and optimal power allocation. In this ...
    • Performance comparison of up-link and down-link techniques under DUDe strategy for heterogeneous networks 

      Wang, Hui; García Lozano, Mario; Mutafungwa, Edward; Yin, Xuefeng; Ruiz Boqué, Sílvia (2017)
      Conference report
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      This paper provides new insights about the performance of Down-link and Up-link Decoupling (DUDe) when compared with Cell Range Expansion (CRE) combined with enhanced Inter-Cell Interference Coordination (eICIC). Instead ...
    • Performance study of uplink and downlink splitting in ultradense highly loaded networks 

      Wang, Hui; García Lozano, Mario; Mutafungwa, Edward; Yin, Xuefeng; Ruiz Boqué, Sílvia (2018-07-15)
      Article
      Open Access
      This paper provides new insights into the performance of Uplink and Downlink Splitting (UDS) in highly loaded wireless communication systems, in terms of both serving nodes and the number of users with high traffic activity. ...
    • Power minimization of cooperative beamforming networks with spectrum sharing 

      Ling, Cen; Yin, Xuefeng; Ruiz Boqué, Sílvia; García Lozano, Mario (2015-03-13)
      Article
      Open Access
      Cooperative communication with spectrum sharing has been proved to be an efficient way to reduce energy consumption. In this work, an optimal power allocation algorithm is proposed for mobile cooperative beamforming networks, ...