Title :
A survey on hierarchical modulation for high-definition video transmission based on IEEE 802.11n
Author :
Wang, Yan ; Liu, Danpu ; Li, Mingliang
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Post & Telecommun., Beijing, China
Abstract :
In this paper, a hierarchical modulation scheme is applied to IEEE 802.11n to reach the purpose of unequal error protection (UEP). A simplified method of data partition is proposed for intra- and inter-predicted videos which are encoded by H.264/AVC. Simulation results show that the PSNR of compressed video can be improved through this hierarchical modulation scheme by about 4 ~ 8 dB on both AWGN and wireless fading channel. However, this improvement can only be achieved in a quite small range of low SNR, which greatly restricts its application in a practical system.
Keywords :
AWGN channels; data compression; fading channels; high definition video; modulation; video coding; wireless LAN; AWGN channel; H.264-AVC encoding; IEEE 802.11n; PSNR; UEP; WLAN technology; data partition; hierarchical modulation scheme; high-definition video transmission; interpredicted videos; intrapredicted videos; unequal error protection; video compression; wireless fading channel; AWGN channels; Bit error rate; Fading; Phase shift keying; Predictive models; Signal to noise ratio; Wireless communication;
Conference_Titel :
Communication Technology (ICCT), 2010 12th IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6868-3
DOI :
10.1109/ICCT.2010.5689129
