Optimal Re - quantization Vector Quantization with Wavelet Transformation

To enhance the signal quality based on optimization techniques, a scheme based on 9/7 wavelet transform and an optimal re-quantization codebook proposed. The optimal requantization codebook is constructed by an iterative manner for a given quantization codebook that was originally constructed based on the quantization codebook of the specified transmitter. The construction process is iteratively repeated until a local optimum solution is reached. This algorithm is implemented in fingerprint compression using VQ codebook that have been computed from several training fingerprint. For this, Wavelet 9/7 filter with the re-quantization techniques have been deployed for better bit transmition compared with Wavelet 9/7 using traditional VQ.