Adaptive Modulation for OFDM-Based Multiple Description Progressive Image Transmission

This paper addresses the use of adaptive modulation in progressive image transmission with multiple description coding in conjunction with an Orthogonal Frequency Division Multiplexing (OFDM) system. Specifically, two adaptive systems are considered: variable rate with fixed power, and variable rate with variable power. An algorithm is proposed to allocate power and constellation size at each subchannel by maximizing the throughput. Simulation results confirm that cross-layer optimization with adaptive modulation enhances system performance.

[1]  Richard E. Ladner,et al.  Approximately optimal assignment for unequal loss protection , 2000, Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101).

[2]  Marco Chiani,et al.  Bit-loading for unequal error protection of video streams in OFDM wireless systems , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

[3]  Abbas Jamalipour,et al.  Wireless communications , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[4]  Richard E. Ladner,et al.  Unequal loss protection: graceful degradation of image quality over packet erasure channels through forward error correction , 2000, IEEE Journal on Selected Areas in Communications.

[5]  Zixiang Xiong,et al.  Progressive video delivery over wideband wireless channels using space-time differentially coded OFDM systems , 2006, IEEE Transactions on Mobile Computing.

[6]  Zixiang Xiong,et al.  Real-time error protection of embedded codes for packet erasure and fading channels , 2004, IEEE Transactions on Circuits and Systems for Video Technology.

[7]  Zixiang Xiong,et al.  Progressive image transmission over space-time coded OFDM-based MIMO systems with adaptive modulation , 2006, IEEE Transactions on Mobile Computing.

[8]  Laurence B. Milstein,et al.  A cross-Layer diversity technique for multicarrier OFDM multimedia networks , 2006, IEEE Transactions on Image Processing.

[9]  William A. Pearlman,et al.  A new, fast, and efficient image codec based on set partitioning in hierarchical trees , 1996, IEEE Trans. Circuits Syst. Video Technol..