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Error Resilient Image Transmission over Wireless Fading Channels

机译:无线衰落通道上的错误弹性图像传输

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Nowadays transferring images and video over wireless channels is becoming more use of the medium. However, a wireless medium is not very reliable in the way that it adds unwanted components and noise to the wireless transmission. So there may be a loss of data. Due to this possible loss of data without the capability of resending a correct version we need a system to protect and correct such losses. The transmission of images over wireless channels is examined using reorganization of the compressed images into error-resilient, product-coded streams. The product-code consists of Turbo-codes or Reed-Solomon codes which are optimized using an iterative process. The wireless channel used for the testing phase is a Rayleigh Fading channel with Additive White Gaussian Noise (AWGN) added as a noise component. In this paper we propose protection techniques for image transmission and compare the performance of various protection methods for all JPEG standards. The proposed image standard model was found to perform very well in protecting the images against quality degradation during transmission over wireless channels. The strength of the protection plays a large part in the protection of the image and should be chosen to suit the particular channel in use. The default protection also provides very strong protection for the user who does not wish to choose their own setting.
机译:如今,通过无线通道传输图像和视频正在越来越多地使用该介质。但是,无线介质不是很可靠,因为它会向无线传输中添加不必要的组件和噪声。因此可能会丢失数据。由于这种可能的数据丢失而没有重新发送正确版本的能力,因此我们需要一个系统来保护和纠正这种丢失。通过将压缩图像重新组织为具有防错能力的产品编码流,可以检查图像在无线通道上的传输。产品代码由Turbo代码或Reed-Solomon代码组成,这些代码使用迭代过程进行了优化。用于测试阶段的无线信道是瑞利衰落信道,其中添加了加性高斯白噪声(AWGN)作为噪声分量。在本文中,我们提出了用于图像传输的保护技术,并比较了所有JPEG标准的各种保护方法的性能。发现所提出的图像标准模型在保护图像以防在无线信道上传输期间质量下降方面表现非常好。保护的强度在图像的保护中起着很大的作用,应选择适合所使用的特定通道的强度。默认保护还为不想选择自己设置的用户提供了非常强大的保护。

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