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Rate Adaptation and Admission Control for Video Transmission with Subjective Quality Constraints
Chao Chen, Xiaoqing Zhu, Gustavo de Veciana +2
Adapting video data rate during streaming can effectively reduce the risk of playback interruptions caused by channel throughput fluctuations. The variations in rate, however, also…
Modeling the Time-varying Subjective Quality of HTTP Video Streams with Rate Adaptations
Chao Chen, Lark Kwon Choi, Gustavo de Veciana +3
Newly developed HTTP-based video streaming technologies enable flexible rate-adaptation under varying channel conditions. Accurately predicting the users' Quality of Experience (Qo…
Delay-Constrained Video Transmission: Quality-driven Resource Allocation and Scheduling
Amin Abdel Khalek, Constantine Caramanis, Robert W. Heath
Real-time video demands quality-of-service (QoS) guarantees such as delay bounds for end-user satisfaction. Furthermore, the tolerable delay varies depending on the use case such a…
Analysis of Blockage Effects on Urban Cellular Networks
Tianyang Bai, Rahul Vaze, Robert W. Heath
Large-scale blockages like buildings affect the performance of urban cellular networks, especially at higher frequencies. Unfortunately, such blockage effects are either neglected…
Space-Time Interference Alignment and Degrees of Freedom Regions for the MISO Broadcast Channel with Periodic CSI Feedback
Namyoon Lee, Robert Heath
This paper characterizes the degrees of freedom (DoF) regions for the multi-user vector broadcast channel with periodic channel state information (CSI) feedback. As a part of the c…
Learning-Based Adaptive Transmission for Limited Feedback Multiuser MIMO-OFDM
Alberto Rico-Alvarino, Robert W. Heath
Performing link adaptation in a multiantenna and multiuser system is challenging because of the coupling between precoding, user selection, spatial mode selection and use of limite…