Performance Evaluation of Rake Receiver for Wavelet Video with UEP Codes in W-CDMA System and Fading Channels

The Rake receiver for wavelet video compression with four levels of unequal error protection (UEP) codes in wide-band code division multiple access (W-CDMA) system over additive white Gaussian noise (AWGN) and Rayleigh fading channels are performed and evaluated. The deployment of Wavelets has approached a powerful technique for compressing video sequence. The wavelet transform compression technique has shown to be more appropriate to high quality video applications, producing better quality output for the compressed frames of video. A spatially scalable video coding framework of MPEG2 in which motion correspondences between successive video frames are exploited in the wavelet transform domain. The basic motivation for our coder is that motion fields are typically smooth and, therefore, can be efficiently captured through a multiresolutional framework. Wavelet decomposition is applied to video frames and the coefficients at each level are predicted from the coarser level through backward motion compensation. 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 Rake receiver is used for multipath problems and each Rake receiver is provided for each level of UEP codes. The implementation of a W-CDMA and Rake receiver, one of the most challenging tasks in third generation receivers, demonstrates that the architecture can support very high data rates while retaining flexibility for multi-user radio communication. Key-Words: Rake Receiver, Unequal Error Protection Codes, Embedded Zero-Tree Wavelet Transform, Two Dimensional Wavelet Packet Transform, Wide-Band Code Division Multiple Access, Additive White Gaussian Noise, Rayleigh Fading Channel.