Analisa Pengiriman Citra Terkompresi SPIHT dengan Teknik Spread Spectrum Direct Sequence (DS-SS)

In this information technology era, the demand for multimedia communications needs continue to increase. Website on the internet made it interesting by including a visualization of image or video that can be played. Image (image) as one of the multimedia component hold a very important role as a form of visual information. This image file has a capacity large enough, and to access it takes a long time, so it takes a data compression technique, with the aim to reduce the redundancy of the data contained in the image file, so that the image files can be stored or transmitted efficiently. In this case the image files will be compressed using the algorithm SPIHT (Set Partitioning In Hierarchical Trees), SPIHT image compression algorithm that is capable of achieving high compression ratios. By way of coding wavelet transforms coefficients gradually. Due to the compressed data stream is very vulnerable to channel interference. In the process of transmission technique was used Direct Sequence Spread Spectrum (DS-SS). Results obtained after simulation, reconstruction of the images measured by an objective assessment parameters based on the value Peak Signal to Noise Ratio. Objective assessment of efficient reconstruction image quality with the rate 2bpp (bit/pixel) 46,834 dB PSNR are values obtained Keywords: SPIHT, wavelet, DSSS, rate, PSN