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• W1978465500 abstract "We investigate the problem of downlink power control for streaming multiple variable bit rate (VBR) videos in a multicell wireless network, where downlink capacities are limited by inter-cell interference. We adopt a deterministic model for VBR video traffic that considers video frame sizes and playout buffers at the mobile users. The problem is to find the optimal transmit powers for the base stations, such that VBR video data can be delivered to mobile users without causing playout buffer underflow or overflow. We formulate a nonlinear nonconvex optimization problem and prove the condition for the existence of feasible solutions. A centralized branch-and-bound algorithm is then developed, which incorporates the Reformulation-Linearization Technique and can produce (1-ε)-optimal solutions. We also propose a low-complexity distributed algorithm with fast convergence as an alternative to the centralized algorithm. Through simulations with VBR video traces under fading channels, we find the distributed algorithm can achieve a performance very close to that of the centralized algorithm." @default.
• W1978465500 created "2016-06-24" @default.
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• W1978465500 date "2013-12-01" @default.
• W1978465500 modified "2023-10-09" @default.
• W1978465500 title "Downlink Power Control for Multi-User VBR Video Streaming in Cellular Networks" @default.
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• W1978465500 doi "https://doi.org/10.1109/tmm.2013.2270457" @default.
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