Wideband MC-CDMA and Rake Receivers for UEP with Wavelet Video Transmission over AWGN and Rayleigh Fading Channels

摘要

Wideband Multicarrier code division multiple access (MC-CDMA) and Rake receivers for wavelet video transmission with four levels of unequal error protection (UEP) codes over additive white Gaussian noise (AWGN) and Rayleigh fading channels are performed and evaluated. The deployment of Wavelets has approached a powerful technique and high quality for compressing video sequence. A spatially scalable video coding framework of MPEG2 in which motion correspondences between successive video frames are exploited in the wavelet transform domain. The proposed algorithms of the embedded zero-tree wavelet (EZW) coder and the two-dimensional wavelet packet transform (2-D WPT) are analysed. The presented scheme of the asynchronous wideband MC-CDMA and Rake receivers is used for multipath problems. Each carrier of asynchronous wideband MC-CDMA is provided for each Rake receiver and each level of UEP codes.