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In this paper, we study the stochastic optimization of cloud radio access networks (C-RANs) by joint remote radio head (RRH) activation and beamforming in the downlink. Unlike most previous works that only consider a static optimization framework with full traffic buffers, we formulate a dynamic optimization problem by explicitly considering the effects of random traffic arrivals and time-varying...
This paper addresses the energy-efficient resource allocation problem in downlink Orthogonal Frequency Division Multiple Access (OFDMA) networks with multiple users. The joint optimization of power and subcarrier allocation to maximize bits-per-Joule is formulated constrained by the maximum transmit power and the minimum required system data rate. Due to the prohibitive computational complexity, this...
When developing gigabit speed communication systems, a lot of design and implementation challenges emerge. And prototype is important to assess the overall system performance and complexity trade-offs under real-world conditions. In this contribution, prototype design and implementation of a time division-fourth generation (TD-4G) system-time division duplex-gigabit speed (TDD-GBPS) demonstration...
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