@article {18254,
	title = {Multiuser distortion management of layered video over resource limited downlink multicode-CDMA},
	journal = {Wireless Communications, IEEE Transactions on},
	volume = {5},
	year = {2006},
	month = {2006/11//},
	pages = {3056 - 3067},
	abstract = {Transmitting multiple real-time encoded videos to multiple users over wireless cellular networks is a key driving force for developing broadband technology. We propose a new framework to transmit multiple users{\textquoteright} video programs encoded by MPEG-4 FGS codec over downlink multicode CDMA networks in real time. The proposed framework jointly manages the rate adaptation of source and channel coding, CDMA code allocation, and power control. Subject to the limited system resources, such as the number of pseudo-random codes and the maximal power for CDMA transmission, we develop an adaptive scheme of distortion management to ensure baseline video quality for each user and further reduce the overall distortion received by all users. To efficiently utilize system resources, the proposed scheme maintains a balanced ratio between the power and code usages. We also investigate three special scenarios where demand, power, or code is limited, respectively. Compared with existing methods in the literature, the proposed algorithm can reduce the overall system{\textquoteright}s distortion by 14\% to 26\%. In the demand-limited case and the code-limited but power-unlimited case, the proposed scheme achieves the optimal solutions. In the power-limited but code-unlimited case, the proposed scheme has a performance very close to a performance upper bound},
	keywords = {(mobile, access;combined, allocation;broadband, case;layered, CDMA, cellular, code, codes;radio, codes;real-time, codes;telecommunication, coding;mobility, coding;video, coding;wireless, communication;, control;pseudo-random, control;pseudonoise, control;video, distortion, division, downlink, encoded, limited, links;random, management, management;power, multicode-CDMA;source-channel, multiple, networks;broadband, networks;cellular, radio);power, radio;code, source-channel, technology;code-unlimited, video;multiuser, videos;resource},
	isbn = {1536-1276},
	doi = {10.1109/TWC.2006.258231},
	author = {Han,Z. and Su,Guan-Ming and Kwasinski,A. and M. Wu and Liu,K. J.R}
}
@conference {18200,
	title = {Distortion management of real-time MPEG-4 video over downlink multicode CDMA networks},
	booktitle = {Communications, 2004 IEEE International Conference on},
	volume = {5},
	year = {2004},
	month = {2004/06//},
	pages = {3071 - 3075 Vol.5 - 3071 - 3075 Vol.5},
	abstract = {In this paper, a protocol is designed to manage source rate/channel coding rate adaptation, code allocation, and power control to transmit real-time MPEG-4 FGS video over downlink multicode CDMA networks. We develop a fast adaptive scheme of distortion management to reduce the overall distortion received by all users subject, to the limited number of codes and maximal transmitted power. Compared with a modified greedy method in literature, our proposed algorithm can reduce the overall system{\textquoteright}s distortion by at least 45\%.},
	keywords = {access;, adaptation;, allocation;, CDMA, channel, code, coding, coding;, combined, communication;, compression;, control;, data, distortion, division, downlink, links;, management;, MPEG-4, multicode, multiple, networks;, power, radio, rate, real-time, resource, source, source-channel, video, video;, visual},
	doi = {10.1109/ICC.2004.1313096},
	author = {Su,Guan-Ming and Han,Zhu and Kwasinski,A. and M. Wu and Liu,K. J.R and Farvardin,N.}
}
@conference {18201,
	title = {Dynamic distortion control for 3-D embedded wavelet video over multiuser OFDM networks},
	booktitle = {Global Telecommunications Conference, 2004. GLOBECOM {\textquoteright}04. IEEE},
	volume = {2},
	year = {2004},
	month = {2004/12/03/nov},
	pages = {650 - 654 Vol.2 - 650 - 654 Vol.2},
	abstract = {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{\textquoteright} 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.},
	keywords = {3D, 802.11a;, channels;, codec;, codecs;, communication;, control;, deviation;, distortion, diversity, diversity;, downlink, dynamic, embedded, fairness;, Frequency, IEEE, LAN;, maximal, minimax, minimization;, modulation;, multimedia, multiuser, OFDM, OFDM;, PSNR, rate, reception;, streaming;, systems;, techniques;, theory;, TIME, transforms;, video, video;, wavelet, wireless},
	doi = {10.1109/GLOCOM.2004.1378042},
	author = {Su,Guan-Ming and Han,Zhu and M. Wu and Liu,K. J.R}
}
