Distortion optimal transmission of multi-layered FGS video over wireless channels

Abstract-- We identify an analytical expression for the distortion of a scalable video bitstream containing a Base Layer (BL) and one or more Enhancement Layer (EL) bitstreams. Considering the different priority of BL and EL, we adopt our distortion expression for each of these bitstreams separately. Utilizing these distortion models, we propose a pair of low complexity Unequal Error Protection (UEP) methods for transmitting these bitstreams over a tandem channel. These onedimensional Forward Error Correction (FEC) coding schemes, protect each bitstream against both bit errors caused by fading and packet erasures caused by network buffering. They also combat temporally correlated loss effects observed over tandem channels by using optimal symbol interleaving. We evaluate the performance of our proposed schemes by comparing their results against those of Equal Error Protection (EEP) and those of a number of UEP methods as well. We illustrate the performance advantage of our schemes over...

• Type: Journal
• Year: 2010
• Where: JSAC
• Authors: Negar Nejati, Homayoun Yousefi'zadeh, Hamid Jafarkhani
• Keywords: Distortion, Error Protection, JSAC 2010, Tandem Channels