混合窗口解码 共同源码通道 任何时间编码系统
Li Deng1,2, Zhiping Shi1,2, Yixin Wang3
1National Key Laboratory on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China.
Entropy (Basel, Switzerland)
|November 27, 2024
概括
本研究介绍了用于联合源通道随时编码 (JSCAC) 系统的联合混合窗口解码 (JHWD) 算法. 在保持错误校正性能的同时,JHWD减少了解码复杂性,为JSCAC和其他空间合编码系统提供了实用的解决方案.
科学领域:
- 信息理论 信息理论
- 编码理论编码理论
- 数字通信数字通信
背景情况:
- 联合源码通道随时编码 (JSCAC) 结合了源码和通道编码,以提高性能.
- 现有的JSCAC系统经常使用联合扩展窗口解码 (JEWD),它提供了高错误纠正,但也具有高复杂性.
- 需要解码算法来平衡JSCAC中的性能和复杂性.
研究的目的:
- 为JSCAC系统提出一个新的联合混合窗口解码 (JHWD) 算法.
- 为了减少JSCAC的解码复杂性,同时保持错误纠正能力.
- 为JSCAC和相关编码结构提供一个低复杂度的实现选项.
主要方法:
- 开发一个联合混合窗口解码 (JHWD) 算法.
- 通过基于综合征检查检测指导的自适应本地扩展窗口解码的实施.
- 使用混合窗口结构来管理窗口扩张和滑动.
- 提出了一个改进的密度演变算法,用于对比性能分析.
主要成果:
- JHWD算法有效地减少了与窗口扩展相关的解码复杂性.
- 窗口滑动引起的错误传播被混合窗口方法所缓解.
- 拟议的JHWD方案显示了与最先进的方法可比的错误纠正性能.
- 非对称性性能分析证实了JHWD算法的有效性.
结论:
- 对于JSCAC系统来说,JHWD算法提供了一个可行的低复杂性解决方案.
- 这种解码方案适用于使用空间合代码的各种联合源通道编码 (JSCC) 系统.
- 在解码复杂性和错误纠正性能之间,JHWD提供了一个实用的权衡.
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