Efficient Compressed Video Communication

This paper presents a chaotic interleaving approach for efficient video transmission with orthogonal frequency division multiplexing (OFDM) with equalization over fading channels. The SPIHT compressed video is converted to luminance and chrominance approach and converted to binary data. The binary data is interleaved with the proposed approach prior to the modulation step. The chaotic Baker map is used in the proposed interleaving approach. In addition to reducing the channel effects on the transmitted data, the proposed chaotic interleaving approach adds a degree of encryption to the transmitted data. The performance of the proposed approach is tested by the transmission of SPIHT compressed video frames over Rayleigh fading channels with chaotic interleaving. Experimental results show that video frames are received with higher peak signal-to-noise ratios (PSNRs) if chaotic interleaving is applied. We also propose an efficient technique to reduce the effects of both multiple access interference (MAI) and intersymbol interference (ISI) in wireless OFDM systems. A hybrid scheme comprising randomization of SPIHT video frames at the transmitter and a regularized equalizer at the receiver unit is suggested and studied. Then, the regularized equalizer is used to reduce the effect of ISI and provide a better estimate of the data. The performance of the proposed scheme is studied and compared with traditional schemes. Our simulation results show a noticeable performance improvement by using the proposed scheme.