Error Resilient SPIHT Coded Grayscale Image transmission over MIMO System

Abstract

In this paper, we propose Error Resilient SPIHT coded MIMO system to address the issue of image transmission and reception over noisy Rayleigh Fading channel. Set Partitioning in Hierarchical Trees (SPIHT) is chosen as the compression algorithm since it offers the lossless compression and excellent rate distortion in noiseless environment.SPIHT encoded data is modulated in the manner that it will provide Unequal Error Protection (UEP) to achieve error resilience.In proposed method, SPIHT encoded data is divided into the low priority stream (LP) and the high priority stream (HP) to achieve UEP and as a result it yields high PSNR value.These streams are modulated using M-QAM modulation scheme and transmitted over Multiple Input Multiple Output (MIMO) system to achieve better diversity.The adaptive value of M is determined by the proposed algorithm.Simulation results depicts that PSNR of received images are better as compared to that reported by Fowdur et al. [12].