Abstract
improved wireless video communication is challenging since video stream is vulnerable to channel distortions. Hence, the need to investigate efficient scheme for improved video communications. This research work investigated broadcast schemes, and proposes smart broadcast technique as a solution for improved video quality over constrained network such as wireless network under tight constraints. The scheme exploits the concept of video analysis and adaptation principles in the optimization process. The experimental results obtained under different channel conditions demonstrate the capability of the proposed scheme in terms of improving the average received video quality performance over a constrained network.
Highlights
Video communication over a wireless channel is more error-prone compared to that of a wired channel due to varying channel conditions and resource constraints
Mobile WiMAX uses Orthogonal Frequency Division Multiple Access (OFDMA) [4], which divides the available resources into a number of subchannels [5]
Intelligent Broadcast System for Enhanced Personalizedservices based on contents semantic is discussed in [13] where viewers satisfaction is increased by serving user preferences
Summary
Video communication over a wireless channel is more error-prone compared to that of a wired channel due to varying channel conditions and resource constraints. Mobile WiMAX uses Orthogonal Frequency Division Multiple Access (OFDMA) [4], which divides the available resources into a number of subchannels [5] Modulation schemes such as Quadrature Phase Shift Keying (QPSK) and Quadrature Amplitude Modulation (QAM) are supported in OFDMA with variable channel coding rates [6] [7] which offer channel protection for improved video communications. Factors such as Signal-to-Noise Ratio (SNR) determine the performance of a wireless transmission [8]. This research report focuses on efficient scheme, utilizing content characterization to maximize the received video quality performance under constrained networks
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