Hybrid analog and digital beamforming has emerged as a key enabling technology for millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) communication systems since it can balance the trade-off between system performance hardware efficiency. Owing to strong ability of central control, cooperative networks show great potential enhance spectral efficiency mmWave communications. I...

We propose an efficient mobility management solution to the problem of assigning small base stations (SBSs) multiple mobile data users in a heterogeneous setting. formalize using novel sequential decision-making model named contextual combinatorial volatile multi-armed bandits (MABs), which each association is considered as arm, volatility arm imposed by dynamic arrivals users, and context addi...

In Bulgaria’s irrigation sector, collective action solutions have been propagated by the Bulgarian Government and the World Bank in recent years. However, the introduction of a World Bank Project, the enforcement of the Bulgarian Water Law in 2000 and the Water User Association Act in 2001 find no common ground where collective action can grow. Given that villagers often hardly know anything ab...