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

fYear

2007

fDate

11-15 March 2007

Firstpage

1496

Lastpage

1501

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE

Conference_Location

Kowloon

ISSN

1525-3511

Print_ISBN

1-4244-0658-7

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2007.282

Filename

4224527