Title :
A MCS Selection Strategy Based on Ordered Modulation for IEEE 802.11n System
Author :
Wang, Yan ; Liu, Danpu
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
The main application of IEEE 802.11n MIMO-OFDM system focuses on transmitting HD video in WLAN. In this paper, we propose an ordered modulation scheme based on IEEE 802.11n with multiple optional modulation and coding schemes (MCS) to achieve unequal error protection (UEP) for the HD video transmission. In the scheme, the most significant bits (MSB) are mapped into the spatial streams utilizing low-level modulation, while the least significant bits (LSB) are mapped into the streams utilizing high-level modulation. Based on this UEP scheme, we propose a selection strategy to choose the optimal MCS among candidates for a specific data rate, where the MCS with best peak-signal-noise-ratio (PSNR) is selected for HD video transmission. Simulation results show that this UEP scheme and selection strategy can obviously improve the PSNR performance of the received videos.
Keywords :
MIMO communication; OFDM modulation; high definition video; modulation coding; multimedia communication; wireless LAN; HD video transmission; IEEE 802.11n MIMO-OFDM system; MCS; MCS selection strategy; PSNR; PSNR performance; UEP scheme; WLAN; optional modulation and coding schemes; ordered modulation scheme; peak-signal-noise-ratio; unequal error protection; Bit error rate; Error correction codes; IEEE 802.11n Standard; PSNR; Phase shift keying; Videos;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6040543
