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Network function virtualization (NFV) allows software-oriented network functions executed on general-purpose servers or virtual machines (VMs) instead of dedicated hardware, greatly improving the flexibility and scalability of network services. Consequently, NFV would facilitate versatile and dynamic network measurement services to meet the increasingly diversified measurement demands. However, it...
In this paper, we study the radio resource allocation for femtocell networks in orthogonal frequency division multiple access (OFDMA) systems from the aspect of users' quality of experience (QoE). Three types of services are considered including audio stream, data stream and video stream. With the metric being mean opinion score (MOS), a two-tier network is modeled and optimization problem is formulated...
This paper investigates coordinated resource allocation for 3-dimension (3D) antenna array systems in mul-ticell multiple-input multiple-output (MIMO) and orthogonal frequency division multiple-access (OFDMA) wireless networks. Cell-center user and cell-edge user specific downtilts are accordingly partitioned through dynamic vertical beamforming in the 3D MIMO-OFDM communication systems. Taking these...
This paper investigates coordinated resource allocation for cell-center and cell-edge users in multicell orthogonal frequency division multiple-access (OFDMA) wireless networks. Here, we assume the data symbols of each user is only known by one base station (BS). Referring to the fractional frequency reuse (FFR) scheme, the resources for cell-center and cell-edge users are partitioned. Based on such...
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