论文标题
在带宽限制和ASE噪声下的数字子载波多路复用
On Digital Subcarrier Multiplexing under A Bandwidth Limitation and ASE Noise
论文作者
论文摘要
我们表明，与单载波（SC）系统相比，数字子载波多路复用（DSM）系统需要更高的复杂性才能使Nyquist脉冲成型更大，并且在使用相同的脉冲塑造时，两个系统都使用相同的带宽是一种误解。通过逼真的发射器（TX）模块和放大的自发发射（ASE）噪声加载的背对背（B2B）实验，我们表明，即使使用优化的水填充和熵负载，DSM也不会达到较大的净数据速率（NDR），而仅在SC中与SC相比，与在Long Haul传输场景中存在相比仅是SC。
We show that digital subcarrier multiplexing (DSM) systems require much greater complexity for Nyquist pulse shaping than single-carrier (SC) systems, and it is a misconception that both systems use the same bandwidth when using the same pulse shaping. Through back-to-back (B2B) experiments with realistic transmitter (TX) modules and amplified spontaneous emission (ASE) noise loading, we show that even with optimized waterfilling and entropy loading, DSM does not achieve a larger net data rate (NDR) compared to SC when only ASE noise exists in the channel in long-haul transmission scenarios.
