Successive interference cancellation (SIC) is used to approach the achievable information rates (AIRs) of joint detection and decoding for long-haul optical fiber links. The AIRs of memoryless ring constellations are compared to those of circularly symmetric complex Gaussian modulation for surrogate channel models with correlated phase noise. Simulations are performed for 1000 km of standard single-mode fiber with ideal Raman amplification. In this setup, 32 rings and 16 SIC-stages with Gaussian message-passing receivers achieve the AIR peaks of previous work. The computational complexity scales in proportion to the number of SIC-stages, where one stage has the complexity of separate detection and decoding.

翻译：连续干扰消除用于逼近长距离光纤链路中联合检测与解码的可达信息速率。针对具有相关相位噪声的替代信道模型，比较了无记忆环型星座与循环对称复高斯调制的可达信息速率。对采用理想拉曼放大的1000公里标准单模光纤进行了仿真。在此设置下，32环和16级连续干扰消除结合高斯消息传递接收机实现了先前工作中的可达信息速率峰值。计算复杂度与连续干扰消除级数成比例增加，其中单级具有分离检测与解码的复杂度。