为了提高传输质量，结合JPEG2000信源和FEC信道编码的统计特性，提出了一种基于非均匀错误保护的最优码率分配技术。

Based on unequal error protection with jointing JPEG2000 source and FEC channel coding, a novel optimal rate allocation technology is proposed.

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在详细分析了多级编码调制的不等错误保护原理的基础上，设计了一种针对8ask调制的非均匀信号星座。

After the unequal error protection of multilevel coded modulation is discussed in detail, a non-uniform signal constellation applied to 8ask modulation is designed.

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