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首页> 外文期刊>IEE proceedings. Radar, sonar and navigation >Error resilient transmission of SPIHT coded images over fading channels
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Error resilient transmission of SPIHT coded images over fading channels

机译:SPIHT编码图像在衰落信道上的抗错传输

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摘要

The paper introduces a method of transmitting error resilient SPIHT coded images over highly error prone Rayleigh fading channels. First, the source significance of the SPIHT coded output is obtained. Based on the significance of the bits, the channel coding is varied accordingly. Channel coding consists of a mixture of rate compatible punctured convolutional (RCPC) codes and interleaving to combat the burst errors produced by the fading channel. An additional error concealment technique is also introduced into the SPIHT decoder to improve its results in cases where errors cause the corruption of the average luminance level during decoding. Comparison with using RS block codes at a total transmission rate of 1.0 bits/pixel is carried out over fading channels with very high error rates to show the superiority of this method over methods using burst error codes.
机译:本文介绍了一种在易出错的瑞利衰落信道上传输防错SPIHT编码图像的方法。首先,获得SPIHT编码输出的源有效位。基于比特的重要性,信道编码相应地变化。信道编码由速率兼容的收缩卷积(RCPC)码和交织混合而成,以抵抗衰落信道产生的突发错误。 SPIHT解码器中还引入了一种附加的错误隐藏技术,以在错误导致解码期间平均亮度水平下降的情况下改善其结果。在具有极高误码率的衰落信道上与以1.0比特/像素的总传输速率使用RS分组码进行比较,以显示该方法优于使用突发错误码的方法。

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