论文标题
一个简单的容量方案方案，用于依赖极化损失的通道
A Simple Capacity-Achieving Scheme for Channels with Polarization-Dependent Loss
论文作者
论文摘要
我们证明，对于广泛使用具有极化依赖性损失（PDL）的通道模型，通道容量是通过与通用预言器结合的简单干扰取消方案来实现的。至关重要的是，所提出的方案在理论上不仅是信息的最佳信息，而且也非常简单且具体。它将PDL通道转换为单独的标量添加剂白色高斯噪声通道，从而允许为此类通道设计的现成编码和调制方案接近容量。在6 dB的PDL下产生的信噪比（SNR）罚款降低至仅1 dB的信息理论最小值，而不是在天真过度提供的情况下引起的4 dB SNR惩罚。
We demonstrate, for a widely used model of channels with polarization dependent loss (PDL), that channel capacity is achieved by a simple interference cancellation scheme in conjunction with a universal precoder. Crucially, the proposed scheme is not only information-theoretically optimal, but it is also exceptionally simple and concrete. It transforms the PDL channel into separate scalar additive white Gaussian noise channels, allowing off-the-shelf coding and modulation schemes designed for such channels to approach capacity. The signal-to-noise ratio (SNR) penalty incurred under 6 dB of PDL is reduced to the information-theoretic minimum of a mere 1 dB as opposed to the 4 dB SNR penalty incurred under naive over-provisioning.
