电力线通信系统中的预编码Turbo码
Precoded Turbo Equalizer for Power Line Communication Systems
摘要：
电力线通信因其广泛的应用前景而受到越来越多的关注，其中包括免费的最后一英里通信解决方案。然而，由于存在严重的符号间干扰（ISI）和恶劣的随机脉冲噪声，通过电力线传输的信号会严重恶化。这项工作提出了一种新的预编码Turbo均衡方案，专门为PLC信道设计。通过引入有用的预编码来重塑ISI，优化最大{ \it后验}（MAP）检测来解决非高斯脉冲噪声，并执行软迭代判决细化，新的均衡器表现出比现有的Turbo均衡器明显更好的增益。
英文摘要：
Power line communication continues to draw increasing interest by promising a wide range of applications including cost-free last-mile communication solution. However, signal transmitted through the power lines deteriorates badly due to the presence of severe inter-symbol interference (ISI) and harsh random pulse noise. This work proposes a new precoded turbo equalization scheme specifically designed for the PLC channels. By introducing useful precoding to reshape ISI, optimizing maximum {\it a posteriori} (MAP) detection to address the non-Gaussian pulse noise, and performing soft iterative decision refinement, the new equalizer demonstrates a gain significantly better than the existing turbo equalizers.
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