SPIHT Algorithm with Huffman Encoding for Image Compression and Quality Improvement over MIMO OFDM Channel
Dnyaneshwar.K, CH.Suneetha
Abstract
In this paper, Compression and improving the Quality of images during the transmission using SPIHT algorithm combined with Huffman encoding over OFDM channel has been proposed. Initially decompose the image in to different level, the compressed coefficients are arranged in descending order of priority and mapped over the channels. The coefficients with lower importance level, which are likely to mapped over the bad sub channels, are discarded at the transmitter to save power without significant loss of reception quality. Next SPIHT embedded encoder algorithm combined with Huffman encoder is applied for further compression. Finally the Huffman and SPIHT decoding of the embedded encoder is done. In this technique reduce the number of encoding bits and improving the Quality of image.
Keyword
DWT, Huffman, SPIHT, OFDM channel.