Real-time Watermarking Algorithm Applied in Wireless Network for User Identification
Zhou Hao · Video Engineering · 2008
Digital watermarking technology is introduced to wireless broadband network. Wavelet transform, diversity technology and spread spectrum are adopted to realize watermark embedding and extraction. Thus it can identify entitled users in wireless network. Channel simulation shows that the algorithm has perfect imperceptibility and robustness. In condition of different signalto-noise ratios, watermark extraction probability is considerable high. The estimation of calculation indicates that the method is effective and feasible.