误码率
量化(信号处理)
电子工程
计算机科学
解码方法
传输(电信)
自编码
正交调幅
有效位数
三角积分调变
编码器
调制(音乐)
带宽(计算)
电信
物理
算法
人工智能
工程类
深度学习
CMOS芯片
声学
操作系统
作者
Jifan Cai,Zehuang Lu,Zhiteng Luo,Junwen Zhang,Nan Chi
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-10-02
卷期号:48 (20): 5217-5217
摘要
This Letter proposes a novel, to the best of our knowledge, approach utilizing a delta-sigma modulation (DSM)-based 1-bit autoencoder (AE) for efficient encoding and decoding in various channel conditions. Simulation analysis demonstrates the AE’s ability to mitigate noise by reducing a peak-to-average power ratio (PAPR) and enhancing an in-band power of the signals, particularly under low signal-to-noise ratios (SNRs). The AE-DSM achieves theoretical transmission performance even at SNRs below 6 dB. In a 40-m free-space link experiment, the AE-DSM exhibits an 8.4-dB lower bit error rate (BER) compared to 64QAM-DSM, enabling a transmission rate of 1.31 Gbps. Furthermore, the 1-bit AE-DSM significantly reduces power consumption in the receiving analog-to-digital converter (ADC), facilitates transmission at low SNRs, and effectively mitigates nonlinear effects. Consequently, the DSM-based AE holds immense potential for future mobile fronthaul links.
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