Title :
Quasi-Optimal Real-time Video Transmission in OFDM Systems
Author :
Xu, Jun ; Shen, Xuemin ; Mark, Jon W. ; Cai, Jun
Author_Institution :
Hughes Network Syst., Germantown, MD
Abstract :
In this paper, transmitting the real-time video with QoS provisioning over orthogonal frequency division multiplexing (OFDM) wireless channels is studied. Efficient subcarrier allocation schemes, namely regular, delay tolerant and adaptive, are proposed for real-time video streaming with QoS satisfaction to achieve near-maximal frequency efficiency. The Munkres algorithm is properly applied to the schemes to assure the optimality of subcarrier assignment. Multiuser multichannel diversity is investigated to exploit the innate multiplexing gain from fading variation and delay tolerance.
Keywords :
OFDM modulation; channel allocation; diversity reception; quality of service; video streaming; wireless channels; Munkres algorithm; OFDM systems; QoS provisioning; delay tolerance; fading variation; multiuser multichannel diversity; orthogonal frequency division multiplexing; quality of service; quasioptimal real-time video transmission; real-time video streaming; subcarrier allocation schemes; subcarrier assignment; wireless channels; Bit error rate; Buffer storage; Delay; Fading; Forward error correction; OFDM; Quality of service; Real time systems; Throughput; Wireless networks;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.282
