Title :
H.264/AVC Error Resilience Scheme Based on OFDM System Using Space-Time Block Coding
Author :
Liu, Yong ; Men, Ai-Dong ; Tong, Qing-song
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
In this paper, an error resilience scheme based on H.264/AVC progressive image transmission over wireless fading channels is proposed. The source coding approach is based on data partitioning (DP) defined in H.264 standard. DP units with unequal important data are applied optimal channel code allocation in terms of their importance, thus yielding a certain degree of error resilience. To overcome frequency selective fading of wireless channels and improve capacity of the system, OFDM system using space-time block coding (STBC) is considered. Simulation results show that the scheme can obviously improve the error resilience compared to the scheme without DP, especially when the channel is in bad condition; the performance of the scheme with higher spatial diversity gains is better than the scheme with lower spatial diversity gains.
Keywords :
OFDM modulation; block codes; channel coding; diversity reception; fading channels; source coding; space-time codes; video coding; H.264-AVC error resilience scheme; OFDM system; STBC; data partitioning; frequency selective wireless fading channels; optimal channel code allocation; progressive image transmission; source coding; space-time block coding; spatial diversity gains; Automatic voltage control; Block codes; Computer errors; Diversity methods; Fading; Image reconstruction; OFDM; Protection; Resilience; Wireless communication; DP; Error resilience; H.264/AVC; MIMO; STBC;
Conference_Titel :
Advanced Computer Theory and Engineering, 2008. ICACTE '08. International Conference on
Conference_Location :
Phuket
Print_ISBN :
978-0-7695-3489-3
DOI :
10.1109/ICACTE.2008.65