Two-Level Scheduling for Video Transmission over Downlink OFDMA Networks.

ABSTRACT: This paper presents a two-level scheduling scheme for video transmission over downlink orthogonal frequency-division multiple access (OFDMA) networks. It aims to maximize the aggregate quality of the video users subject to the playback delay and resource constraints, by exploiting the multiuser diversity and the video characteristics. The upper level schedules the transmission of video packets among multiple users based on an overall target bit-error-rate (BER), the importance level of packet and resource consumption efficiency factor. Instead, the lower level renders unequal error protection (UEP) in terms of target BER among the scheduled packets by solving a weighted sum distortion minimization problem, where each user weight reflects the total importance level of the packets that has b

SUBMITTER: Tham ML 

PROVIDER: S-EPMC4764368 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature