Dynamic distortion control for 3-D embedded wavelet video over multiuser OFDM networks

• Published in: 2004 IEEE Global Telecommunications Conference - Globecom Vol. 2; pp. 650 - 654 Vol.2
• Main Authors: Su, Guan-Ming, Han, Zhu, Wu, Min, Liu, K.J. Ray
• Format: Conference Proceeding
• Language: English
• Published: Piscataway, New Jersey IEEE 2004
• Subjects: Applied sciences; Bit rate; Coding, codes; Detection, estimation, filtering, equalization, prediction; Exact sciences and technology; Frequency diversity; Information, signal and communications theory; Layout; MPEG 4 Standard; Multiplexing; OFDM; PSNR; Scalability; Signal and communications theory; Signal, noise; Telecommunications and information theory; Video codecs; Video coding; Video compression; Performance evaluation; Image quality; Multiple access; Codec; Equity; Orthogonal frequency division multiplexing; Downlink; IEEE standards; Subcarrier; Algorithm; Flexibility; Signal to noise ratio
• ISBN: 9780780387942; 0780387945
• DOI: 10.1109/GLOCOM.2004.1378042

In this paper, we propose a system to transmit multiple 3D embedded wavelet video programs over downlink multiuser OFDM. We consider the fairness among users and formulate the problem as minimizing the users' maximal distortion subject to power, rate, and subcarrier constraints. By exploring frequency, time, and multiuser diversity in OFDM and flexibility of the 3D embedded wavelet video codec, the proposed algorithm can achieve fair video qualities among all users. Compared to a scheme similar to the current multiuser OFDM standard (IEEE 802.11a), the proposed scheme outperforms it by 1-5 dB on the worst received PSNR among all users and has much smaller PSNR deviation.