Bristol University (UK) Discovers A Faster High-Quality Video Wireless Transmission Technology
TheInquirer.net reports that The University at Bristol (UK) has researched ways to transmit high quality video over wireless signals to handle the growing amount of mobile video traffic attributable to the rise of smartphone apps.
Published in the journal IEEE Transactions for Mobile Computing, the research was led by professor Andrew Nix and Dr Victoria Sgardoni from the University of Bristol’s Communication Systems and Networks group.
“Video dominates internet traffic and by 2018 it is expected wired devices will account for 39 per cent of internet protocol (IP) traffic, while WiFi and mobile devices will account for 61 per cent of IP traffic,” said the university.
The research looks to accommodate this and shows how videos can be better transmitted over wireless links such as WiFi and 4G.
Below is the University’s cross-layer system simulator figure, which shows how cross-packet forward error correction (FEC) codes, such as Raptor codes, are applied at the application layer (AL) to allow the AL decoder to regenerate packets that were lost over the radio and network layers.
The proposed methodology takes into consideration the channel resources required to accommodate the Raptor encoding overheads.