Title :
Embedded image transmission based on adaptive modulation and constrained retransmission over block fading channels
Author :
Peng, Kewu ; Kieffer, J. ; Liu, Qingwen ; Zhou, Shengli
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., USA
Abstract :
We consider the problem of embedded image transmission with feedback of channel state information (CSI) and retransmission request. Adaptive modulation is employed to improve the spectral efficiency. Constrained retransmission is employed to provide reliable packet transmission with limited delay. Performance analysis and numerical results over Nakagami block fading channels are provided for the transmission system with statistical or instantaneous CSI at the transmitter. The results show that CSI at the transmitter is very important for adaptive modulation/coding over fading channels.
Keywords :
adaptive modulation; delays; fading channels; feedback; packet radio networks; quadrature amplitude modulation; time-varying channels; visual communication; Nakagami fading channels; QAM; adaptive coding; adaptive modulation; block fading channels; channel state information; constrained retransmission; embedded image transmission; packet transmission; time-varying channels; Adaptive systems; Channel state information; Delay; Fading; Feedback; Image coding; Image communication; Propagation losses; Time varying systems; Transmitters;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on
Print_ISBN :
0-7803-7663-3
DOI :
10.1109/ICASSP.2003.1200066
