论文标题
带有直接检测的频道频道的连续干扰取消
Successive Interference Cancellation for Bandlimited Channels with Direct Detection
论文作者
论文摘要
通过联合检测和解码（JDD），可以实现具有直接检测的带限制渠道的最大信息率，但是JDD通常太复杂而无法实施。研究了两个接收器结构以降低复杂性：单独的检测和解码（SDD）和连续的干扰取消（SIC）。对于躁郁症调制，频域凸起的肌动脉脉冲成型以及具有色散的光纤通道，SIC的速率接近JDD的速率，从而获得了超出SDD和强度调制的显着能量增长。 Gibbs采样进一步降低了检测器的复杂性，并达到了低于中间信噪比（SNR）的前向后背算法的速率，但在高SNR处停滞不前。具有极地代码，高阶调制和多级编码的模拟证实了预测的收益。
The maximum information rates for bandlimited channels with direct detection are achieved with joint detection and decoding (JDD), but JDD is often too complex to implement. Two receiver structures are studied to reduce complexity: separate detection and decoding (SDD) and successive interference cancellation (SIC). For bipolar modulation, frequency-domain raised-cosine pulse shaping, and fiber-optic channels with chromatic dispersion, SIC achieves rates close to those of JDD, thereby attaining significant energy gains over SDD and intensity modulation. Gibbs sampling further reduces the detector complexity and achieves rates close to those of the forward-backward algorithm at low to intermediate signal-to-noise ratio (SNR) but stalls at high SNR. Simulations with polar codes, higher-order modulation, and multi-level coding confirm the predicted gains.
