Research on source/channel coding for resource constrained network systems

在本研究中，我们提出了一种适用于无线移动终端等资源受限设备的分布式视频编码方法。利用每一帧的边缘信息提高了边信息的准确性，使峰值信噪比提高了1~2分贝。此外，还提出了一种新的信源-密码-信道联合编码方案，其压缩比略有提高，译码误码率降低了1/2。作为一种用于存储系统的差错控制编码，已经提出了用于闪存的多级编码方法。

In this research, we have proposed a distributed video coding method suitable for resource-constrained devices, such as wireless mobile terminals. The accuracy of the side information is improved by edge information of each frames, which improves the PSNR by 1 to 2dB. Also, a novel joint-source-cryptographic-channel coding has been proposed, where the compression ratio is slightly improved and the decoded error rate is decreased by a factor of two. As an error control coding for storage systems, multilevel coding methods have been proposed for flash memories.