Title :
Power optimized space-time code for layer coded multimedia over wireless channels
Author :
Zheng, H. ; Liu, K.J.R.
Author_Institution :
Dept. of Electr. Eng. & Syst. Res. Center, Maryland Univ., College Park, MD, USA
Abstract :
A power optimized space-time code is presented for reliable delivery of layer coded multimedia, data through wireless channels. Appropriate power control further improves the performance of space time coding. By allocating transmitted power according to the layer perceptual importance, unequal error protection is achieved. Numerical example shows that the proposed algorithm achieves 6 dB PSNR improvement compared to that with equal power distribution in low SNR range
Keywords :
encoding; multimedia systems; video coding; layer coded multimedia; power optimized space-time code; unequal error protection; wireless channels; Diversity reception; Error correction codes; Gaussian noise; Multimedia systems; Power control; Receiving antennas; Space time codes; Streaming media; Transmitters; Transmitting antennas;
Conference_Titel :
Image Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-7803-5467-2
DOI :
10.1109/ICIP.1999.817076
