Title :
Performance evaluation of MPEG-4 image transmission systems over short-term block-fading channels
Author :
Mahapakulchai, Srijidtra ; Tumchat, Waraporn ; Intasuk, Patcharaporn
Author_Institution :
Dept. of Electr. Eng., Kasetsart Univ., Bangkok, Thailand
Abstract :
In this work, the performance evaluation of low-frequency and high-frequency MPEG-4 images is exclusively summarized. Our designed transmitting system including the convolutional interleaver is examined over the short-term block fading channels. The signal envelope for the short-term fading can be obtained from the general Chi-Square distribution. When degree of freedom increase, the PSNRs in all cases increase. In the simulation result, the usage of the interleavers becomes noticeable at the degree of freedom higher than ten. The system performance in PSNR is significantly improved up to 6 dB.
Keywords :
convolutional codes; fading channels; interleaved codes; video coding; visual communication; MPEG-4 image transmission systems; chi-square distribution; convolutional interleaver; degree of freedom; short-term block fading channels; short-term block-fading channels; transmitting system; Boats; Buildings; Demodulation; Block-fading channels; Convolutional interleavers; MPEG-4 images; Ring convolutional codes; Shortterm fading channels;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2011 8th International Conference on
Conference_Location :
Khon Kaen
Print_ISBN :
978-1-4577-0425-3
DOI :
10.1109/ECTICON.2011.5947826
