在K用户高斯干扰通道的叠加格子代码上.
María Constanza Estela1, Claudio Valencia-Cordero1
1Department of Electrical Engineering, Universidad de Santiago de Chile (USACH), Santiago 9170022, Chile.
Entropy (Basel, Switzerland)
|July 26, 2024
概括
格子高斯编码在K用户干扰通道上实现了接近容量的性能. 这种方法模仿随机代码,为干扰对齐和改进的数据速率提供了结构化的方法.
科学领域:
- 信息理论 信息理论
- 无线通信无线通信
- 编码理论编码理论
背景情况:
- K-user高斯干扰通道是无线通信的一个基本模型.
- 由于干扰,在这些通道上达到容量限制是具有挑战性的.
- 埃特金等人以前的工作. 使用随机代码确定的容量缺口.
研究的目的:
- 调查使用格子高斯编码对K用户高斯干扰通道的使用.
- 探索格子结构对于干扰对齐的潜力.
- 确定格子编码是否可以达到与随机编码相似的性能限制.
主要方法:
- 应用格子高斯编码,模仿具有格子高斯分布的随机代码.
- 对格子平面度因子,消息权力和通道系数施加约束.
- 使用格子对齐来扩展结果到K用户通道.
主要成果:
- 条件被发现可以实现与两个用户弱高斯干扰通道的随机代码与最佳速率相同的恒定差距.
- 获得了与随机代码可比的一般化自由度.
- 格子编码方法已成功扩展到K-user弱高斯干扰通道.
结论:
- 格子高斯编码为K用户高斯干扰通道中的干扰对齐提供了一个结构化和有效的方法.
- 这种方法为最佳速率提供了持续的差距,与随机代码实现的性能相匹配.
- 格子对齐是一种可行的技术,可以在复杂的干扰场景中提高性能.
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