Performance Evaluation of Video Communications Over 4G Network

Abstract

With exponential increase in the volumes of video traffic in cellular networks, there is an increasing need for optimizing the quality of video delivery. Fourth-generation networks (Long-Term Evolution-Advanced or LTE-A) are being introduced in many countries worldwide, which allow a downlink speed of up to 1 Gbps and uplink of 100 Mbps over a single base station. In this paper, we characterize the performance of LTE-A physical layer in terms of transmitted video quality when the channel conditions and LTE settings are varied. We test the performance achieved as the channel quality is changed and HARQ features are enabled in physical layer. Blocking and blurring metrics were used to model image quality.

Energy-Aware Download Method in LTE Based Smartphone

“…Jie Ren et al [17] proposed a power aware download algorithm for energy-delay tradeoff using the Lyapunov optimization framework. Gaurav Pande [18] and Riikka Susitaival et al [19] evaluated the performance of LTE network from the Internet access and Communication aspects. No work so far in the area has used MDP to optimize the energy consumption of data download on the real LTE mobile system.…”