A new inter-frame polar coded modulation scheme is proposed and experimentally demonstrated in an infrared light communication (ILC) system. The scheme utilizes the Monte Carlo (MC) method to jointly design an inter-frame polar code with 16-ary quadrature-amplitude modulation (16QAM) and orthogonal frequency-division multiplexing (OFDM). The indoor transmission of 9.6 Gbit/s 16QAM OFDM signal is experimentally achieved over a 3.2 km single-mode fiber and 0.8 m free space. The experiment results show that the proposed scheme employing a polar code of length 1024 and cyclic redundancy check aided successive cancellation list (CA-SCL) decoding with a list size of 2 resulted in no errors over 107 bits. Moreover, the proposed scheme requires negligible extra decoding complexity with respect to its classical counterpart, MC-constructed polar coded modulation. To the best of our knowledge, this is the first experimental demonstration of a polar coded modulation based infrared light communication system.

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9.6 Gbit/s极坐标编码红外光通信系统实验演示

提出了一种新的帧间极性编码调制方案，并在红外光通信 (ILC) 系统中进行了实验演示。该方案利用蒙特卡罗(MC)方法联合设计具有16进制正交幅度调制(16QAM)和正交频分复用(OFDM)的帧间极性码。9.6 Gbit/s 16QAM OFDM 信号的室内传输是在 3.2 km 单模光纤和 0.8 m 自由空间上实验实现的。实验结果表明，所提出的方案采用长度为 1024 的极性码和循环冗余校验辅助连续消除列表 (CA-SCL) 解码，列表大小为 2，没有超过 107 位的错误。此外，与经典方案相比，所提出的方案需要的额外解码复杂度可以忽略不计，MC 构造的极坐标编码调制。据我们所知，这是基于极性编码调制的红外光通信系统的首次实验演示。