International Conference on Computer and Electrical Engineering 4th (ICCEE 2011)
49 Efficient Transmission Images with QAM Modulation over an AWGN Channel
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In this paper, we effort show the better of various modes of QAM modulation that receiving image on the optimal receiver have best quality and resolution. For this work, first we send 8-bit pixels in a gray image by form 8-bit symbols. Continue for improve the quality of receive image on the optimal receiver and reduce the effect of Gaussian noise, dividing scheme of gray images to smaller portions is presented. According to the results of the simulation, shows that if the separation to be smaller pixel bites, then image have robust against white Gaussian noise and strongly reduce error rate.